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Update on CentOS Linux strategy

25.10.2021

CERN and Fermilab have been closely evaluating the Linux distribution landscape. We observe that national cyber infrastructure organizations are increasingly supporting more science domains, so in addition to LHC- or HEP-specific considerations, it will be useful to have a choice that is widely recognized and meets the needs of broader science research.

Red Hat has made a proposal to CERN regarding an academic licensing scheme. Ultimately this would require significant overhead at external sites, and therefore we have worries on this proposal’s attractiveness for other sites.

Going forward, we propose to target CentOS Stream as the standard distribution for experiments. We feel that deploying CentOS Stream 8 is low risk, and we now have months of experience running IT services and experiment offline workloads on CentOS Stream 8 without any significant issues.
We feel that should issues arise with the adoption of CentOS Stream 8, it would be straightforward to reevaluate other options before CentOS Stream 8 support ends. CentOS Stream 8 is a supported distribution until May 2024. Trivial migration paths are provided by the various ELC (Enterprise Linux
Clone) communities.

Continued support for existing workloads on Scientific Linux 7 and CERN CentOS 7 will be maintained as previously planned.

Update on CentOS Linux strategy

05.05.2021

CERN and Fermilab have been evaluating a number of options in view of the sudden change of end of life of CentOS Linux 8 in December 2020 and the move to Stream. A migration path for servers already running CentOS Linux 8 is being provided to CentOS Stream 8 for those needing this release and latest features. Continued support for existing workloads on Scientific Linux 7 and CERN CentOS 7 will be maintained as previously planned. We are evaluating a number of scenarios for future Linux distributions such as community editions or academic licence options over the next 12 months as the shorter Stream lifecycle is not compatible with a number of use cases for the scientific program of the worldwide particle physics community.

Information on change of end of life for CentOS 8

17.12.2020

Dear Linux users,

CERN and Fermilab acknowledge the recent decision to shift focus from CentOS Linux to CentOS Stream, and the sudden change of the end of life of the CentOS 8 release. This may entail significant consequences for the worldwide particle physics community. We are currently investigating together the best path forward. We will keep you informed about any developments in this area during Q1 2021.

For more details on CentOS 8 and CentOS 8 stream, please see https://linux.cern.ch/centos8

Best regards,
Ben Morrice for Linux.Support@cern.ch

CentOS 8.3 testing available

09.12.2020

Dear Linux users,

We are pleased to announce that the updated CentOS 8 version:

          ******************************
          C 8.3 is available for testing
          ******************************
            as of Wednesday 2020-12-09

and will become the default C8 production version on:

              Wednesday 2021-01-06.

The list of updated packages can be found here:

  https://cern.ch/linux/updates/c8/test/latest_updates/

For information about C8, including installation
instructions please visit:

        https://cern.ch/linux/centos8/

Best regards,
Ben Morrice for Linux.Support@cern.ch

CERN CentOS 7.9 available for installation.

16.11.2020

Dear Linux users.

We are pleased to announce that the updated CERN Centos Linux (CC7) version:

                  *******************
                  CC 7.9 is available
                  *******************
                as of Monday 16.11.2020

and is now default CC7 production version.

For information about CC79, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

* Installation:

  - via PXE network boot menu (http://cern.ch/linux/install/)

  - non-PXE installation:

    http://linuxsoft.cern.ch/cern/centos/7.9/os/x86_64/images/

    and corresponding installation path is:

    http://linuxsoft.cern.ch/cern/centos/7.9/os/x86_64/

  - Automated PXE installations using AIMS2

    Boot targets are:

      CC7_X86_64
      CC79_X86_64

  - A new Openstack image is also available:

      name : CC7 - x86_64 [2020-11-16]
      id   : 8d3802b2-8b9d-40a1-b4fd-7b2b70f8dbd9

* Upgrading from previous CERN CentOS 7.X release:

  CC7 system can be updated by running:

  # yum --enablerepo={updates,extras,cern,cernonly} clean all
  # yum --enablerepo={updates,extras,cern,cernonly} update

--
Daniel Abad on behalf of the Linux Team

CERN CentOS 7.9 testing available for installation.

12.11.2020

Dear Linux users.

We are pleased to announce the newly updated CERN CentOS Linux (CC7) version:

          *****************************************
          CC7.9 TEST is available for installation
          *****************************************
                as of Thursday 12.11.2020

and will become the default CC7 production version on 16.11.2020.

For information about CC7.9, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

* Installation:

  - via PXE network boot menu (http://cern.ch/linux/install/)

  - non-PXE installation:
    http://linuxsoft.cern.ch/cern/centos/7.9/os/x86_64/images/
    and corresponding installation path is:
    http://linuxsoft.cern.ch/cern/centos/7.9/os/x86_64/

  - Automated PXE installations using AIMS2
    Boot target is:
      CC79_X86_64_TEST

  - Openstack TEST image is also available:
    name : CC7 TEST - x86_64 [2020-11-12]
    id   : 5ce3a956-976b-4425-a480-4f24021fe53e

  - Puppet managed VMs can be created with the following options:
    ai-bs --cc7 --nova-image-edition Test [...]

* Upgrading from a previous CERN CentOS 7.X release:

  All updates will be released to production repositories only on 16.11.2020.
  Until then CC7 systems can be updated by running:

  # yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing clean all
  # yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing update

* Problem reporting:
  Please report problems to Linux.Support@cern.ch

--
Daniel Abad on behalf of the Linux Team

CERN CentOS 7.9 testing available.

21.10.2020

Dear Linux users.

We are pleased to announce the updated CERN CentOS Linux (CC7) TEST version:

             *******************************
             CC 7.9 is available for testing
             *******************************
               as of Wednesday 21.10.2020.

For information about CC7, including installation instructions please visit:

        http://cern.ch/linux/centos7/

Please note that install media is not yet available.
We will send an additional email when ready.

* Updating CERN CentOS 7.8 to 7.9

CC7 system can be updated by running:

# yum --enablerepo=cr --enablerepo={updates,extras,cern}-testing --enablerepo=epel-testing clean all
# yum --enablerepo=cr --enablerepo={updates,extras,cern}-testing --enablerepo=epel-testing update

* Agile infrastructure

As a reminder, all puppet configured machines within the
QA environment will receive automatically those updates.

--
Daniel Abad for Linux.Support@cern.ch

CentOS 8.2 testing available and change of production schedule

17.06.2020

Dear Linux users,

We are pleased to announce that the updated CentOS 8 version:

        ******************************
        C 8.2 is available for testing
        ******************************
           as of Tuesday 2020-06-17

and will become the default C8 production version on:

            Wednesday 2020-06-24.

The list of updated packages can be found here:

    https://cern.ch/linux/updates/c8/test/latest_updates/

For information about C8, including installation
instructions please visit:

        https://cern.ch/linux/centos8/



In addition, we'd like to announce a change in the schedule for CentOS 8 production repositories.

The previous schedule for moving CentOS 8 repositories to production was that every Wednesday, the previous Tuesday's snapshot becomes the new production version. This means new packages make it to production quickly, but the downside is that any package released on a Tuesday only spends one day in testing and the next day goes into production. As we move towards more services running on CentOS 8, we felt this schedule was no longer appropriate.

Starting today, the new schedule will be that every Wednesday, we move the previous Wednesday's snapshot into production. This guarantees that all upgrades will spend at least a week in testing, and at most 13 days. We will still be able to speed this up in case of emergency updates.

Please contact Linux Support should you have any concerns about this new schedule.

Best regards,
Alex Iribarren for Linux.Support@cern.ch

CERN CentOS 7.8 available for installation.

04.05.2020

Dear Linux users.

We are pleased to announce that the updated CERN Centos Linux (CC7) version:

                *******************
                CC 7.8 is available
                *******************
              as of Monday 04.05.2020

and is now default CC7 production version.

For information about CC78, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

* Installation:

    - via PXE network boot menu (http://cern.ch/linux/install/)

    - non-PXE installation:

    http://linuxsoft.cern.ch/cern/centos/7.8/os/x86_64/images/

    and corresponding installation path is:

    http://linuxsoft.cern.ch/cern/centos/7.8/os/x86_64/

    - Automated PXE installations using AIMS2

    Boot targets are:

        CC7_X86_64
        CC78_X86_64

    - A new Openstack image is also available:

        name : CC7 - x86_64 [2020-05-04]

* Upgrading from previous CERN CentOS 7.X release:

        CC7 system can be updated by running:

        # yum --enablerepo={updates,extras,cern,cernonly} clean all
        # yum --enablerepo={updates,extras,cern,cernonly} update

--
Ben Morrice on behalf of the Linux Team

CentOS 8.1 available for installation.

20.04.2020

Dear Linux users,

We are pleased to announce the immediate availability of the next CERN Linux release:

        *****************
        C 8.1: CentOS 8.1
        *****************

For information about CentOS 8, including installation
instructions please visit:

http://cern.ch/linux/centos8/


* Installation:

    - via PXE network boot menu (http://cern.ch/linux/install/)

    - non-PXE installation:

http://linuxsoft.cern.ch/cern/centos/8.1/kickstart/x86_64/images/

    and corresponding installation path is:

http://linuxsoft.cern.ch/cern/centos/8.1/kickstart/x86_64/

    - Automated PXE installations using AIMS2

        Boot targets are:

            C8_X86_64
            C81_X86_64

    - Openstack image is also available:
            name : C8 - x86_64 [2020-04-16]
            id   : 1ac86763-9942-424d-89c1-6e7138f5d135

    - Puppet-managed VMs can be created with the following option:
            ai-bs --c8 [...]


* Problem reporting:

Please report problems to Linux.Support@cern.ch

--
Alex Iribarren on behalf of the Linux Team

CERN CentOS 7.8 testing installation available.

16.04.2020

Dear Linux users,

We are pleased to announce the newly updated CERN Centos Linux (CC7) version:

            *****************************************
            CC 7.8 TEST is available for installation
            *****************************************
                   as of Thursday 16.04.2020

and will become the default CC7 production version on 30.04.2020.

For information about CC7.8, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

* Installation:

    - via PXE network boot menu (http://cern.ch/linux/install/)

    - non-PXE installation:

    http://linuxsoft.cern.ch/cern/centos/7.8/os/x86_64/images/

    and corresponding installation path is:

    http://linuxsoft.cern.ch/cern/centos/7.8/os/x86_64/

    - Automated PXE installations using AIMS2

    Boot target is:

        CC78_X86_64_TEST

    - Openstack TEST image is also available:
        name : CC7 TEST - x86_64 [2020-04-15]
        id   : 5ce3a956-976b-4425-a480-4f24021fe53e

    - Puppet managed VMs can be created with the following options:
        ai-bs --cc7 --nova-image-edition Test [...]

* Upgrading from previous CERN CentOS 7.X release:

    All updates will be released to production repositories only on 30.04.2020.

    Until then CC7 system can be updated by running:

    # yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing clean all
    # yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing update

* Problem reporting:

    Please report problems to Linux.Support@cern.ch

--
Ben Morrice on behalf of the Linux Team

CERN CentOS 7.8 testing available.

14.04.2020

Dear Linux users.

We are pleased to announce the updated CERN CentOS Linux (CC7) TEST version:

            *******************************
            CC 7.8 is available for testing
            *******************************
                as of Tuesday 14.04.2020.

For information about CC7, including installation instructions please visit:

        http://cern.ch/linux/centos7/

Please note that install media is not yet available.
We will send an additional email when ready.

* Updating CERN CentOS 7.7 to 7.8

CC7 system can be updated by running:

# yum --enablerepo=cr \
    --enablerepo={updates,extras,cern}-testing \
    --enablerepo=epel-testing \
    clean all

# yum --enablerepo=cr \
    --enablerepo={updates,extras,cern}-testing \
    --enablerepo=epel-testing \
    update

* Agile infrastructure

As a reminder, all puppet configured machines within the
QA environment will receive automatically those updates.

--
Ben Morrice for Linux.Support@cern.ch

Announcement of the End of support for SLC6 (Scientific Linux CERN 6)

20.01.2020

Dear Linux users,

From the 30th November 2020, SLC6 will enter End of Life and support will cease. Also from this date, software updates will no longer be made available.

Current users of SLC6 are strongly encouraged to migrate to CC7 (CERN CentOS 7) before 30.11.2020.

Please refer to the "Linux @ CERN" website for more details on CC7 (http://linux.web.cern.ch/linux/centos7)

You may also refer to the following ITSSB entry for additional details / future updates: OTG0054345

Ben Morrice for Linux.Support@cern.ch

CERN CentOS 7.7 available.

30.09.2019

Dear Linux users,

We are pleased to announce that the updated CERN Centos Linux (CC7) version:

                *******************
                CC 7.7 is available
                *******************
              as of Monday 30.09.2019

and is now default CC7 production version.

For information about CC77, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

* Installation:

    - via PXE network boot menu (http://cern.ch/linux/install/)

    - non-PXE installation:

    http://linuxsoft.cern.ch/cern/centos/7.7/os/x86_64/images/

    and corresponding installation path is:

    http://linuxsoft.cern.ch/cern/centos/7.7/os/x86_64/images/

    - Automated PXE installations using AIMS2

    Boot targets are:

        CC7_X86_64
        CC77_X86_64

    - A new Openstack image is also available:

        name : CC7 - x86_64 [2019-09-30]
        id   : 7ebe5c0e-fbbe-4d90-90b1-a48f032bcdc8

* Upgrading from previous CERN CentOS 7.X release:

    CC7 system can be updated by running:

    # yum --enablerepo={updates,extras,cern,cernonly} clean all
    # yum --enablerepo={updates,extras,cern,cernonly} update

--
Ben Morrice on behalf of the Linux Team

CERN CentOS 7.7 testing installation available.

19.09.2019

Dear Linux users.

We are pleased to announce the newly updated CERN Centos Linux (CC7) version:

            *****************************************
            CC 7.7 TEST is available for installation
            *****************************************
                as of Wednesday 18.09.2019

and will become the default CC7 production version on 30.09.2019.

For information about CC7.7, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

* Installation:

    - via PXE network boot menu (http://cern.ch/linux/install/)

    - non-PXE installation:

    http://linuxsoft.cern.ch/cern/centos/7.7/os/x86_64/images/

    and corresponding installation path is:

    http://linuxsoft.cern.ch/cern/centos/7.7/os/x86_64/

    - Automated PXE installations using AIMS2

    Boot target is:

        CC77_X86_64_TEST

    - Openstack TEST image is also available:
        name : CC7 TEST - x86_64 [2019-09-17]
        id   : 6787adb6-982f-4310-a6a8-53d6cee15d0c

    - Puppet managed VMs can be created with the following options:
        ai-bs --cc7 --nova-image-edition Test [...]

* Upgrading from previous CERN CentOS 7.X release:

    All updates will be released to production repositories only on 30.09.2019.

    Until then CC7 system can be updated by running:

    # yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing clean all
    # yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing update

* Problem reporting:

    Please report problems to Linux.Support@cern.ch

--
Ben Morrice on behalf of the Linux Team

CERN CentOS 7.7 testing available.

03.09.2019

Dear Linux users.

We are pleased to announce the updated CERN CentOS Linux (CC7) TEST version:

            *******************************
            CC 7.7 is available for testing
            *******************************
               as of Tuesday 03.09.2019.

For information about CC7, including installation instructions please visit:

        http://cern.ch/linux/centos7/

Please note that install media is not yet available.
We will send an additional email when ready.

* Updating CERN CentOS 7.6 to 7.7

CC7 system can be updated by running:

# yum --enablerepo=cr \
    --enablerepo={updates,extras,cern}-testing \
    --enablerepo=epel-testing \
    clean all

# yum --enablerepo=cr \
    --enablerepo={updates,extras,cern}-testing \
    --enablerepo=epel-testing \
    update

* Agile infrastructure

As a reminder, all puppet configured machines within the
QA environment will receive automatically those updates.

--
Ben Morrice for Linux.Support@cern.ch

RHEL8 - Red Hat Enterprise Linux 8 Server available.

13.05.2019

Dear Linux users.

Red Hat Enterprise Linux 8 Server for x86_64
platform is available for installation at CERN,
starting today.

AIMS2 PXE boot target:

    RHEL_8_0_X86_64

installation path:

http://linuxsoft.cern.ch/enterprise/rhel/server/8/8.0/x86_64

Interactive network installations are possible from
the 'Red Hat Enterprise Linux' PXE boot menu.

Please note that Red Hat Enterprise Linux Server is a
licensed product installable only on authorized
systems. Therefore before you install your
system please request a license assignment from
linux support.

After installation, please do not forget to setup your
system for updates: http://cern.ch/linux/rhel/#rhel8


Thomas Oulevey for Linux.Support@cern.ch

CERN CentOS 7.6 installation available.

10.12.2018

Dear Linux users.

We have a pleasure to announce that updated CERN Centos Linux (CC7) version:

                  *******************
                  CC 7.6 is available
                  *******************
                as of Monday 10.12.2018

and is now default CC7 production version.

For information about CC76, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

* Installation:

    - via PXE network boot menu (http://cern.ch/linux/install/)

    - non-PXE installation:

    http://linuxsoft.cern.ch/cern/centos/7.6/os/x86_64/images/

    and corresponding installation path is:

    http://linuxsoft.cern.ch/cern/centos/7.6/os/x86_64/images/

    - Automated PXE installations using AIMS2

    Boot targets are:

        CC7_X86_64
        CC76_X86_64

    - A new Openstack image is also available:

        name : CC7 - x86_64 [2018-12-03]
        id   : 65bc0185-7fba-4b08-b256-cfc7576d9dda

* Upgrading from previous CERN CentOS 7.X release:

    CC7 system can be updated by running:

    # yum --enablerepo={updates,extras,cern,cernonly} clean all
    # yum --enablerepo={updates,extras,cern,cernonly} update

--
Thomas Oulevey on behalf of the Linux Team

CERN CentOS 7.6 testing installation available.

03.12.2018

Dear Linux users.

We have a pleasure to announce that updated CERN Centos Linux (CC7) version:

            *****************************************
            CC 7.6 TEST is available for installation
            *****************************************
                as of Monday 03.12.2018

and will become default CC7 production version on 10.12.2018.

For information about CC76, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

* Installation:

    - via PXE network boot menu (http://cern.ch/linux/install/)

    - non-PXE installation:

    http://linuxsoft.cern.ch/cern/centos/7.6/os/x86_64/images/

    and corresponding installation path is:

    http://linuxsoft.cern.ch/cern/centos/7.6/os/x86_64/images/

    - Automated PXE installations using AIMS2

    Boot target is:

        CC76_X86_64_TEST

    - Openstack TEST image is also available:
        name : CC7 TEST - x86_64 [2018-12-03]
        id   : 188fc80d-8ed6-4f06-98fd-6617eb2db013

    - Puppet managed VMs can be created with the following options:
        ai-bs --cc7 --nova-image-edition Test [...]

* Upgrading from previous CERN CentOS 7.X release:

    All updates will be released to production repositories only on 10.12.2018.

    Until then CC7 system can be updated by running:

    # yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing clean all
    # yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing update

* Problem reporting:

    - A list of known issues will be updated at:

    http://linux.web.cern.ch/linux/centos7/knownissues

    - Please report problems to Linux.Support@cern.ch
--
Thomas Oulevey for Linux.Support@cern.ch

CERN CentOS 7.6 testing available.

19.11.2018

Dear Linux users.

We have a pleasure to announce that updated CERN Centos Linux (CC7) version:

            *****************************************
            CC 7.6 TEST is available for installation
            *****************************************
                    as of Monday 19.11.2018

and will become default CC7 production version on 10.12.2018.

For information about CC76, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

Updating CERN CentOS 7.5 to 7.6:

All updates will be released to production repositories on Monday 10.12.2017.

Until then CC7 system can be updated by running:

# yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing clean all
# yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing update


Thomas Oulevey for Linux.Support@cern.ch

Scientific Linux CERN 6.10 TEST available.

21.06.2018

Dear CERN Linux users.

We have a pleasure to announce that:

    TEST version of SLC 6.10 for i386/x86_64
    ********************************************

is available as of today.

* What is Scientific Linux CERN 6 ?

    It is a CERN customized Linux distribution built on
top of common base platform - Scientific Linux -
which was in turn built from freely available Red Hat
Enterprise Linux 6 Server sources by a joint Fermi and CERN
effort.

* What is Scientific Linux CERN 6.10 (SLC610) TEST ?

- TEST minor release of SLC6X series with all the
    updates (up to 21.06.2018) integrated in the base
    installation tree.

* Installation

- via PXE network boot menu (http://cern.ch/linux/install/)

- non-PXE installation:

Boot media can be found at:

http://linuxsoft.cern.ch/cern/slc610/i386/images/
http://linuxsoft.cern.ch/cern/slc610/x86_64/images/

and corresponding installation paths are:

http://linuxsoft.cern.ch/cern/slc610/i386/
http://linuxsoft.cern.ch/cern/slc610/x86_64/

- Automated PXE installations using AIMS2

Boot targets are:

SLC610_I386
SLC610_X86_64

* Upgrading from previous SLC6X releases:

    - fully updated SLC 6X systems do not need any upgrade to
    6.10 version, otherwise standard system upgrade procedure
    will bring systems up to date:
        http://cern.ch/linux/scientific6/docs/quickupdate

Please note:

* SLC610 will become the default SLC6 production version as of:

                    Monday 02.07.2018
                    *********************

    providing that no show-stopper problems are found.

* SLC610 (yum) updates will be released to production on:

                    Monday 02.07.2018
                    **********************

    and can be tested before that date by running as root:

    # yum --enablerepo=slc6-testing update


* Certification of the SLC610:

- as there are no other changes than these listed above
    a formal certification process does not need to be handled
    for this minor release.

* Problem reporting:

Please report problems to Linux.Support@cern.ch

Jarosław Polok for Linux.Support@cern.ch

RHEL 6.10 - Red Hat Enterprise Linux 6 Server Update 10 available

20.06.2018

Dear Linux users.

Red Hat Enterprise Linux 6 Server Update 10 for i386/x86_64
platforms is available for installation at CERN,
starting today.

AIMS2 PXE boot targets are as follows:

    RHEL_6_10_I386
    RHEL_6_10_X86_64

installation paths are:

http://linuxsoft.cern.ch/enterprise/rhel/server/6/6.10/i386/
http://linuxsoft.cern.ch/enterprise/rhel/server/6/6.10/x86_64/

Interactive network installations are possible from
the 'Red Hat Enterprise Linux' PXE boot menu.

Please note that Red Hat Enterprise Linux Server is a
licensed product installable only on authorized
systems. Therefore before you install your
system please request a license assignment from
linux support.

After installation, please do not forget to setup your
system for updates: http://cern.ch/linux/rhel/#rhel6


Jarosław Polok for Linux.Support@cern.ch

CERN CentOS 7.5 available.

24.05.2018

Dear Linux users.

We have a pleasure to announce that updated CERN Centos Linux (CC7) version:

                    *******************
                    CC 7.5 is available
                    *******************
                as of Thursday 24.05.2018

and is now default CC7 production version.

For information about CC75, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

* Installation:

    - via PXE network boot menu (http://cern.ch/linux/install/)

    - non-PXE installation:

    http://linuxsoft.cern.ch/cern/centos/7.5/os/x86_64/images/

    and corresponding installation path is:

    http://linuxsoft.cern.ch/cern/centos/7.5/os/x86_64/images/

    - Automated PXE installations using AIMS2

    Boot targets are:

        CC7_X86_64
        CC75_X86_64

* Upgrading from previous CERN CentOS 7.X release:

    CC7 system can be updated by running:

    # yum --enablerepo={updates,extras,cern,cernonly} clean all
    # yum --enablerepo={updates,extras,cern,cernonly} update

--
Thomas Oulevey on behalf of the Linux Team

CERN CentOS 7.5 testing available.

11.05.2018

Dear Linux users.

We have a pleasure to announce that updated CERN Centos Linux (CC7) version:

            *****************************************
            CC 7.5 TEST is available for installation
            *****************************************
                    as of Friday 11.05.2018

and will become default CC7 production version on 24.05.2018.

For information about CC75, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

* Installation:

    - via PXE network boot menu (http://cern.ch/linux/install/)

    - non-PXE installation:

    http://linuxsoft.cern.ch/cern/centos/7.5/os/x86_64/images/

    and corresponding installation path is:

    http://linuxsoft.cern.ch/cern/centos/7.5/os/x86_64/

    - Automated PXE installations using AIMS2

    Boot target is:

        CC75_X86_64_TEST

* Upgrading from previous CERN CentOS 7.X release:

    All updates will be released to production repositories only on
24.05.2018.

    Until then CC7 system can be updated by running:

    # yum --enablerepo=cr
--enablerepo={updates,extras,cern,cernonly}-testing clean all
    # yum --enablerepo=cr
--enablerepo={updates,extras,cern,cernonly}-testing update

* Problem reporting:

    Please report problems to Linux.Support@cern.ch

--
Thomas Oulevey on behalf of the Linux Team

CERN CentOS 7.5 testing available.

03.05.2018

Dear Linux users.

We have a pleasure to announce that updated CERN Centos Linux (CC7) version:

            *******************************
            CC 7.5 is available for testing
            *******************************
               as of Thursday 03.05.2018

and will become default CC7 production version in coming weeks,
pending upstream CentOS release.

Updating CERN CentOS 7.4 to 7.5: Before 7.5 is released as production version
a CC7 system can be updated by running:

# yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing clean all
# yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing update

Agile Infrastructure:

As a reminder, all puppet configured machines within the
QA environment will receive automatically those updates.

Jaroslaw Polok for Linux.Support@cern.ch

Updated cloud / docker images available for SLC5/6 and CC7

20.11.2017

Updated SLC5/6 and CC7 cloud and docker images have been made available.

Cloud images:

    CC7 - x86_64 [2017-11-14]
    SLC6 - x86_64 [2017-11-14]
    SLC6 - i686 [2017-11-14]
    SLC5 - x86_64 [2017-11-14]
    SLC5 - i686 [2017-11-14]

available at https://openstack.cern.ch or from command line:

# openstack image list | grep 2017-11-14

For more information about cloud images please visit:

http://cern.ch/linux/docs/cloudimages

Docker images:

    cc7-base:20171114 (:latest)
    slc6-base:20171114 (:latest)
    slc5-base:20171114 (:latest)

available at:

https://gitlab.cern.ch/linuxsupport/cc7-base/container_registry
https://gitlab.cern.ch/linuxsupport/slc6-base/container_registry
https://gitlab.cern.ch/linuxsupport/slc5-base/container_registry

or from command line:

# docker pull gitlab-registry.cern.ch/linuxsupport/cc7-base:latest
# docker pull gitlab-registry.cern.ch/linuxsupport/slc6-base:latest
# docker pull gitlab-registry.cern.ch/linuxsupport/slc5-base:latest

(above docker images are also available from https://hub.docker.com/u/cern/)

For more information about docker images please visit:

http://cern.ch/linux/docs/dockerimages

Jaroslaw Polok for Linux.Support@cern.ch

Updated cloud / docker images available for SLC5/6 and CC7

20.09.2017

Updated SLC5/6 and CC7 cloud and docker images have been made available.

Cloud images:

    CC7 - x86_64 [2017-09-20]
    SLC6 - x86_64 [2017-09-20]
    SLC6 - i686 [2017-09-20]
    SLC5 - x86_64 [2017-09-20]
    SLC5 - i686 [2017-09-20]

available at https://openstack.cern.ch or from command line:

# openstack image list | grep 2017-09-20

For more information about cloud images please visit:

http://cern.ch/linux/docs/cloudimages

Docker images:

    cc7-base:20170920 (:latest)
    slc6-base:20170920 (:latest)
    slc5-base:20170920 (:latest)

available at:

https://gitlab.cern.ch/linuxsupport/cc7-base/container_registry
https://gitlab.cern.ch/linuxsupport/slc6-base/container_registry
https://gitlab.cern.ch/linuxsupport/slc5-base/container_registry

or from command line:

# docker pull gitlab-registry.cern.ch/linuxsupport/cc7-base:latest
# docker pull gitlab-registry.cern.ch/linuxsupport/slc6-base:latest
# docker pull gitlab-registry.cern.ch/linuxsupport/slc5-base:latest

(above docker images are also available from https://hub.docker.com/u/cern/)

For more information about docker images please visit:

http://cern.ch/linux/docs/dockerimages

Jaroslaw Polok for Linux.Support@cern.ch

CentOS Dojo @ CERN

20.10.2017

The CentOS Dojo's are a one day event, organized
around the world, that bring together people from
the CentOS communities to talk about systems
administration, best practices in Linux centric
activities and emerging technologies of note.

The (almost) final schedule for our CERN event
is now published at:

https://indico.cern.ch/e/centosdojo2017

Please register for the event: limited number of
places available !

CERN CentOS 7.4 available.

18.09.2017

Dear Linux users.

We have a pleasure to announce that updated CERN CentOS Linux (CC7) version:

            *********************************************
            CC 7.4 becomes default CC7 production version
            *********************************************

                      as of Monday 18.09.2017

For information about CC74, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

* Updating CERN CentOS 7.3 to 7.4:

All updates are released to production repositories as of 18.09.2017,
in order to update your system please run as root:

# yum clean all
# yum update

Jaroslaw Polok for Linux.Support@cern.ch

CERN CentOS 7.4 testing available.

12.09.2017

Dear Linux users.

We have a pleasure to announce that updated CERN Centos Linux (CC7) version:

            *****************************************
            CC 7.4 TEST is available for installation
            *****************************************
                    as of Tuesday 12.09.2017

and will become default CC7 production version on 18.09.2017.

For information about CC74, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

Updating CERN CentOS 7.3 to 7.4:

All updates will be released to production repositories on Monday 18.09.2017.

Until then CC7 system can be updated by running:

# yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing clean all
# yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing update


Thomas Oulevey for Linux.Support@cern.ch

CERN CentOS 7.4 testing available.

28.08.2017

Dear Linux users.

We have a pleasure to announce that updated CERN CentOS Linux
(CC7) version:

            *******************************
            CC 7.4 is available for testing
            *******************************
                as of Monday 28.08.2017

and will become default CC7 production version

                    on Monday 11.09.2017.

For information about CC74, including installation
instructions please visit:

        http://cern.ch/linux/centos7/


* Updating CERN CentOS 7.3 to 7.4:

Due to summer holidays, all updates will be
released to production repositories only on 11.09.2017.

Until then CC7 system can be updated by running:

# yum --enablerepo=cr \
    --enablerepo={updates,extras,cern}-testing \
    --enablerepo=epel-testing \
    clean all

# yum --enablerepo=cr \
    --enablerepo={updates,extras,cern}-testing \
    --enablerepo=epel-testing \
    update

* Agile infrastructure

As a reminder, all puppet configured machines within the
QA environment will receive automatically those updates.

Thomas Oulevey for Linux.Support@cern.ch

Phaseout of SMB v1 protocol at CERN

15-18.05.2017

Dear Linux users.

Server Message Block (SMB) version 1 protocol used by Linux Samba suite to access
Microsoft Windows shares and Microsoft DFS filesystem is being disabled on
CERN systems, between 15 and 18 of May 2017, please see:

Disabling SMB v1 protocol CERN-wide (SSB article)

and

Phaseout of SMB v1 protocol at CERN (Linux systems)

Jaroslaw Polok for Linux.Support@cern.ch

Scientific Linux CERN 6.9 available.

10.04.2017

Dear Linux users.

We have a pleasure to announce that updated Scientific
Linux CERN 6 (SLC6) version:

            ******************************************************
               SLC 6.9 becomes default SLC6 production version
            ******************************************************

                         as of Monday 10.04.2017

* What is Scientific Linux CERN 6.9 (SLC69)  ?

    - A minor release of SLC6X series with all the
    updates since release of 6.8 (and up to 30.03.2017)
    integrated in the base installation tree.

* Upgrading from previous SLC6X releases:

    - fully updated SLC 6X systems do not need any upgrade to
    6.8 version, otherwise standard system upgrade procedure
    will bring systems up to date:
        http://cern.ch/linux/scientific6/docs/quickupdate

* Installation media images for SLC69 can be found at:

    For 32 bit systems:

        http://linuxsoft.cern.ch/cern/slc69/i386/images/
        (install path: linuxsoft:/cern/slc69/i386/)

    For 64 bit systems:

        http://linuxsoft.cern.ch/cern/slc69/x86_64/images/
        (install path: linuxsoft:/cern/slc69/x86_64/)


    After downloading media images from above location
    standard installation procedure can be followed:

        http://cern.ch/linux/scientific6/docs/install


* ISO DVD images can be found at:

        http://linuxsoft.cern.ch/cern/slc69/iso/


* Certification of the SLC 6.9:

- as there are no other changes than these listed above
    a formal certification process does not need to be handled
    for this minor release.

Jaroslaw Polok for Linux.Support@cern.ch

Updated cloud / docker images available for SLC5/6 and CC7

10.04.2017

Updated SLC5/6 and CC7 cloud and docker TEST images have been made available.

Cloud images:

    CC7 - x86_64 [2017-04-06]
    SLC6 - x86_64 [2017-04-06]
    SLC6 - i686 [2017-04-06]
    SLC5 - x86_64 [2017-04-06]
    SLC5 - i686 [2017-04-06]

available at https://openstack.cern.ch or from command line:

# openstack image list | grep 2017-04-06

Docker images:

    cc7-base:20170406 (:latest)
    slc6-base:20170406 (:latest)
    slc5-base:20170406 (:latest)

available at:

https://gitlab.cern.ch/linuxsupport/cc7-base/container_registry
https://gitlab.cern.ch/linuxsupport/slc6-base/container_registry
https://gitlab.cern.ch/linuxsupport/slc5-base/container_registry

or from command line:

# docker pull gitlab-registry.cern.ch/linuxsupport/cc7-base:latest
# docker pull gitlab-registry.cern.ch/linuxsupport/slc6-base:latest
# docker pull gitlab-registry.cern.ch/linuxsupport/slc5-base:latest

(above docker images are also available from https://hub.docker.com/u/cern/)

Jaroslaw Polok for Linux.Support@cern.ch

Scientific Linux CERN 6.9 TEST available.

29.03.2017

Dear CERN Linux users.

We have a pleasure to announce that:

    TEST version of SLC 6.9 for i386/x86_64
    ***************************************

is available as of today.

* What is Scientific Linux CERN 6 ?

    It is a CERN customized Linux distribution built on
top of common base platform - Scientific Linux -
which was in turn built from freely available Red Hat
Enterprise Linux 6 Server sources by a joint Fermi and CERN
effort.

* What is Scientific Linux CERN 6.9 (SLC69) TEST ?

- TEST minor release of SLC6X series with all the
    updates (up to 28.03.2017) integrated in the base
    installation tree.

* Installation

- via PXE network boot menu (http://cern.ch/linux/install/)

- non-PXE installation:

Boot media can be found at:

http://linuxsoft.cern.ch/cern/slc69/i386/images/
http://linuxsoft.cern.ch/cern/slc69/x86_64/images/

and corresponding installation paths are:

http://linuxsoft.cern.ch/cern/slc69/i386/
http://linuxsoft.cern.ch/cern/slc69/x86_64/

- Automated PXE installations using AIMS2

Boot targets are:

    SLC69_I386
    SLC69_X86_64

* Upgrading from previous SLC6X releases:

    - fully updated SLC 6X systems do not need any upgrade to
    6.8 version, otherwise standard system upgrade procedure
    will bring systems up to date:
        http://cern.ch/linux/scientific6/docs/quickupdate

Please note:

* SLC69 will become the default SLC6 production version as of:

                    Monday 10.04.2017
                    *****************

    providing that no show-stopper problems are found.

* SLC69 (yum) updates will be released to production on:

                    Monday 10.04.2017
                    *****************

    and can be tested before that date by running as root:

    # yum --enablerepo=slc6-testing update


* Certification of the SLC69:

- as there are no other changes than these listed above
    a formal certification process does not need to be handled
    for this minor release.

* Problem reporting:

Please report problems to Linux.Support@cern.ch

Jarosław Polok for Linux.Support@cern.ch

RHEL 6.8 - Red Hat Enterprise Linux 6 Server Update 9 available

29.03.2017

Dear Linux users.

Red Hat Enterprise Linux 6 Server Update 9 for i386/x86_64
platforms is available for installation at CERN,
starting today.

AIMS2 PXE boot targets are as follows:

    RHEL_6_9_I386
    RHEL_6_9_X86_64

installation paths are:

http://linuxsoft.cern.ch/enterprise/rhel/server/6/6.9/i386/
http://linuxsoft.cern.ch/enterprise/rhel/server/6/6.9/x86_64/

Interactive network installations are possible from
the 'Red Hat Enterprise Linux' PXE boot menu.

Please note that Red Hat Enterprise Linux Server is a
licensed product installable only on authorized
systems. Therefore before you install your
system please request a license assignment from
linux support.

After installation, please do not forget to setup your
system for updates: http://cern.ch/linux/rhel/#rhel6


Jarosław Polok for Linux.Support@cern.ch

Updated TEST cloud / docker images available for SLC5/6 and CC7

01.03.2017

Updated SLC5/6 and CC7 cloud and docker TEST images have been made available.

Cloud images:

    CC7 TEST - x86_64 [2017-03-01]
    SLC6 TEST - x86_64 [2017-03-01]
    SLC6 TEST - i686 [2017-03-01]
    SLC5 TEST - x86_64 [2017-03-01]
    SLC5 TEST - i686 [2017-03-01]

available at https://openstack.cern.ch or from command line:

# openstack image list | grep 2017-03-01

Docker images:

    cc7-base:20170301
    slc6-base:20170301
    slc5-base:20170301

available at:

https://gitlab.cern.ch/linuxsupport/cc7-base/container_registry
https://gitlab.cern.ch/linuxsupport/slc6-base/container_registry
https://gitlab.cern.ch/linuxsupport/slc5-base/container_registry

or from command line:

# docker pull gitlab-registry.cern.ch/linuxsupport/cc7-base:20170301
# docker pull gitlab-registry.cern.ch/linuxsupport/slc6-base:20170301
# docker pull gitlab-registry.cern.ch/linuxsupport/slc5-base:20170301

(above docker images are also available from https://hub.docker.com/u/cern/)


On Monday 06 March 2017 above images will replace current production releases
( Cloud: SLC5/6 - [2017-01-24], CC7 - [2017-02-08], Docker: - :latest).

Jaroslaw Polok for Linux.Support@cern.ch

PXE booting service change

06.02.2017

Dear users,

Following the Windows PXE service change, we would like to announce
that all Windows PXE booting entries (both interactive and AIMS2 targets)
will be removed from current AIMS2/PXE boot server on 06 February 2017
as these will become non-functional.

All systems defined as having operating system WINDOWS (WIN) in
Network Database booting PXE will be redirected to Windows PXE server,
all systens having operating system defined as LINUX will be redirected to
Linux PXE server automatically.

Please note that the change in booting service has been implemented
for campus network on 1st of February, and will be implemented on
Computer Center and Technical Networks on 6th of February.

Jaroslaw Polok for Linux.Support@cern.ch

CERN CentOS 7.3 available.

09.01.2017

Dear Linux users.

We have a pleasure to announce that updated CERN CentOS Linux (CC7) version:

            *********************************************
            CC 7.3 becomes default CC7 production version
            *********************************************

                      as of Monday 09.01.2017

For information about CC73, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

* As announced at ITUM [1] `lcm` configuration tool was
replaced by `locmap`, for more information please visit:

        https://cern.ch/linux/centos7/docs/locmap

* Updating CERN CentOS 7.2 to 7.3:

All updates are released to production repositories as of 09.01.2017,
in order to update your system please run as root:

# yum clean all
# yum update

Thomas Oulevey for Linux.Support@cern.ch

CERN CentOS 7.3 testing available.

06.12.2016

Dear Linux users.

We have a pleasure to announce that updated CERN CentOS Linux
(CC7) version:

            *******************************
            CC 7.3 is available for testing
            *******************************
                as of Tuesday 06.12.2016

and will become default CC7 production version

                    on Monday 09.01.2017.

For information about CC73, including installation
instructions please visit:

        http://cern.ch/linux/centos7/


* As announced at ITUM [1] `lcm` configuration tool will be
replaced by `locmap`, for more information please visit:

        https://linux.web.cern.ch/linux/centos7/docs/locmap

* Updating CERN CentOS 7.2 to 7.3:

Due to CERN annual closure, all updates will be
released to production repositories only on 09.01.2017.

Until then CC7 system can be updated by running:

# yum --enablerepo=cr \
    --enablerepo={updates,extras,cern}-testing \
    clean all

# yum --enablerepo=cr \
    --enablerepo={updates,extras,cern}-testing \
    update



Thomas Oulevey for Linux.Support@cern.ch

End of General User Support for SLC5 - March 2017

13.10.2016

Dear Linux users.

As approved on September 2016 Linux Certification Committee meeting
and presented on October 2016 IT Technical Users Meeting
general user support for Scientific Linux CERN 5 (SLC5) will end on:

                    31st of March 2017

After that date user requests for SLC5 support will be rejected by
CERN service desk.

Dedicated support for experiments and accelerator controls will be
maintained for four months after LHC Long Shutdown beginning until

                    31st of March 2019.

At the end of the dedicated support phase SLC5 will reach
the End of Life phase when support will not be provided anymore
and no more software updates will be made available.


Jaroslaw Polok for Linux.Support@cern.ch

Additional Software Collections available for SLC6 and CC7.

16.06.2016

Dear Linux Users,

As of 16.06.2016 additional software collections are available for Scientific Linux CERN 6 and CERN CentOS 7:

CERN CentOS 7:

    httpd24 - Apache HTTP Server - version 2.4.18
    python27 - An interpreted, interactive, object-oriented programming language - version 2.7.8 (updated)
    rh-java-common - Common Java libraries and tools used by other collections - version 1.1 (updated)
    rh-mariadb101 - A release of MariaDB, an alternative to MySQL - version 10.1.14
    rh-maven33 - Java project management and project comprehension tool - version 3.3.9
    rh-mongodb30upg - A limited version 3.0.11 providing upgrade path from version 2.6 to 3.2
    rh-mongodb32 - High-performance, schema-free document-oriented database - version 3.2.6
    rh-nodejs4 - A release of Node.js with npm 2.15.1 and support for the SPDY protocol version 3.1. - version 4.4.2
    rh-postgresql95 - A release of PostgreSQL, which provides a number of enhancements - version 9.5.2
    rh-python35 - An interpreted, interactive, object-oriented programming language - version 3.5.1
    rh-ror42 - Ruby on Rails -  version 4.2.6
    rh-ruby23 - An interpreter of object-oriented scripting language  - version 2.3.0
    thermostat1 - A monitoring and serviceability tool for OpenJDK - version 1.4.4

Scientific Linux CERN 6:

    httpd24 - Apache HTTP Server - version 2.4.18
    python27 - An interpreted, interactive, object-oriented programming language - version 2.7.8 (updated)
    rh-java-common - Common Java libraries and tools used by other collections - version 1.1 (updated)
    rh-mariadb101 - A release of MariaDB, an alternative to MySQL - version 10.1.14
    rh-postgresql95 - A release of PostgreSQL, which provides a number of enhancements - version 9.5.2
    thermostat1 - A monitoring and serviceability tool for OpenJDK - version 1.4.4

For more information and installation instructions please visit:

- CC7: http://cern.ch/linux/centos7/docs/softwarecollections
- SLC6X: http://cern.ch/linux/scientific6/docs/softwarecollections

Scientific Linux CERN 6.8 available.

30.05.2016

Dear Linux users.

We have a pleasure to announce that updated Scientific
Linux CERN 6 (SLC6) version:

            ******************************************************
            SLC 6.8 becomes default SLC6 production version
            ******************************************************

                as of Thursday 30.05.2016

* What is Scientific Linux CERN 6.8 (SLC68)  ?

    - A minor release of SLC6X series with all the
    updates since release of 6.8 (and up to 30.05.2016)
    integrated in the base installation tree.

* Upgrading from previous SLC6X releases:

    - fully updated SLC 6X systems do not need any upgrade to
    6.8 version, otherwise standard system upgrade procedure
    will bring systems up to date:
        http://cern.ch/linux/scientific6/docs/quickupdate

* Installation media images for SLC68 can be found at:

    For 32 bit systems:

        http://linuxsoft.cern.ch/cern/slc68/i386/images/
        (install path: linuxsoft:/cern/slc68/i386/)

    For 64 bit systems:

        http://linuxsoft.cern.ch/cern/slc68/x86_64/images/
        (install path: linuxsoft:/cern/slc68/x86_64/)


    After downloading media images from above location
    standard installation procedure can be followed:

        http://cern.ch/linux/scientific6/docs/install


* ISO DVD images can be found at:

        http://linuxsoft.cern.ch/cern/slc68/iso/


* Certification of the SLC 6.8:

- as there are no other changes than these listed above
    a formal certification process does not need to be handled
    for this minor release.

Thomas Oulevey for Linux.Support@cern.ch

Additional Software Collections available for SLC6 and CC7.

26.05.2016

Dear Linux Users,

As of 26.05.2016 additional software collections are available for Scientific Linux CERN 6 and CERN CentOS 7:

    sclo-subversion19 - provides SVN version control system v. 1.9.3
    sclo-git25        - provides GIT version control system v. 2.5.5
    sclo-httpd24more  - provides additional httpd24 modules (mod_ruid2,mod_auth_mellon)

For more information and installation instructions please visit:

- CC7: http://cern.ch/linux/centos7/docs/softwarecollections
- SLC6X: http://cern.ch/linux/scientific6/docs/softwarecollections

Scientific Linux CERN 6.8 TEST available.

17.05.2016

Dear CERN Linux users.

We have a pleasure to announce that:

    TEST version of SLC 6.8 for i386/x86_64
    ***************************************

is available as of today.

* What is Scientific Linux CERN 6 ?

    It is a CERN customized Linux distribution built on
top of common base platform - Scientific Linux -
which was in turn built from freely available Red Hat
Enterprise Linux 6 Server sources by a joint Fermi and CERN
effort.

* What is Scientific Linux CERN 6.8 (SLC68) TEST ?

- TEST minor release of SLC6X series with all the
    updates (up to 17.05.2016) integrated in the base
    installation tree.

* Installation

- via PXE network boot menu (http://cern.ch/linux/install/)

- non-PXE installation:

Boot media can be found at:

ttp://linuxsoft.cern.ch/cern/slc68/i386/images/
http://linuxsoft.cern.ch/cern/slc68/x86_64/images/

and corresponding installation paths are:

http://linuxsoft.cern.ch/cern/slc68/i386/
http://linuxsoft.cern.ch/cern/slc68/x86_64/

- Automated PXE installations using AIMS2

Boot targets are:

    SLC68_I386
    SLC68_X86_64

* Upgrading from previous SLC6X releases:

    - fully updated SLC 6X systems do not need any upgrade to
    6.8 version, otherwise standard system upgrade procedure
    will bring systems up to date:
        http://cern.ch/linux/scientific6/docs/quickupdate

Please note:

* SLC68 will become the default SLC6 production version as of:

                    Monday 30.05.2016
                    *********************

    providing that no show-stopper problems are found.

* SLC68 (yum) updates will be released to production on:

                    Monday 30.05.2016
                    **********************

* Certification of the SLC68:

- as there are no other changes than these listed above
    a formal certification process does not need to be handled
    for this minor release.

* Problem reporting:

Please report problems to Linux.Support@cern.ch

Thomas Oulevey for Linux.Support@cern.ch

RHEL 6.8 - Red Hat Enterprise Linux 6 Server Update 8 available

10.05.2016

Dear Linux users.

Red Hat Enterprise Linux 6 Server Update 8 for i386/x86_64
platforms is available for installation at CERN,
starting today.

AIMS2 PXE boot targets are as follows:

    RHEL_6_8_I386
    RHEL_6_8_X86_64

installation paths are:

http://linuxsoft.cern.ch/enterprise/rhel/server/6/6.8/i386/
http://linuxsoft.cern.ch/enterprise/rhel/server/6/6.8/x86_64/

Interactive network installations are possible from
the 'Red Hat Enterprise Linux' PXE boot menu.

Please note that Red Hat Enterprise Linux Server is a
licensed product installable only on authorized
systems. Therefore before you install your
system please request a license assignment from
linux support.

After installation, please do not forget to setup your
system for updates: http://cern.ch/linux/rhel/#rhel6


Jaroslaw Polok for Linux.Support@cern.ch

Additional Software Collections available for SLC6 and CC7.

23.03.2016

Dear Linux Users,

As of 23.03.2016 additional software collections are available for Scientific Linux CERN 6 and CERN CentOS 7:

    sclo-php54 - provides additional php packages for php54 collection.
    sclo-php55 - provides additional php packages for php55 collection.
    sclo-php56 - provides additional php packages for rh-php56 collection.
    sclo-ror42 - Ruby on Rails - version 4.2

For more information and installation instructions please visit:

- CC7: http://cern.ch/linux/centos7/docs/softwarecollections
- SLC6X: http://cern.ch/linux/scientific6/docs/softwarecollections

Software Collections 1.2/2.0, Developer Toolset 3.1 available for SLC6 and CC7.

11.01.2016

Dear Linux Users,

Software Collections and Developer Toolset are offerings
for developers on the Scientific Linux CERN 6 and CERN
CentOS 7 platforms.

Using a framework called Software Collections, an additional
set of tools is installed into the /opt directory,
as recommended by the UNIX Filesystem Hierarchy Standard.

These tools are enabled by the user on demand using the
supplied scl utility.

Software Collections 2.0 provide following tools:

devtoolset-3 - Developer Toolset 3.1:
gcc/g++/gfortran - GNU Compiler Collection - version 4.9.2
gdb - GNU Debugger - version 7.8.2
binutils - A GNU collection of binary utilities - version 2.24
elfutils A collection of utilities and DSOs to handle compiled objects - version 0.161
dwz - DWARF optimization and duplicate removal tool - version 0.11
systemtap - Programmable system-wide instrumentation system - version 2.6
valgrind - Tool for finding memory management bugs in programs - version 3.10
oprofile - System wide profiler - version 0.9.9
eclipse - Integrated Desktop Environment platform - version 4.4.2
rh-perl520 - A high-level programming language that is commonly used for system administration utilities - version 5.20.1
php54, php55, rh-php56 - Scripting language for creating dynamic web sites - versions 5.4.40, 5.5.21 and 5.6.5
python27, rh-python34 - An interpreted, interactive, object-oriented programming language - versions 2.7.8, 3.4.2
rh-ruby22 - An interpreter of object-oriented scripting language - version 2.2.2
rh-ror41 - Ruby on Rails - version 4.1.5
rh-mariadb100 - A release of MariaDB, an alternative to MySQL - version 10.0.20
rh-mongodb26 - High-performance, schema-free document-oriented database - version 2.6.9
rh-mysql56 - A release of MySQL, which provides a number of new features and enhancements - version 5.6.26
rh-postgresql94 - A release of PostgreSQL, which provides a number of enhancements - version 9.4.4
nodejs010 - A release of Node.js with npm 1.4.28 and support for the SPDY protocol version 3.1.
nginx16 - A web and proxy server with a focus on high concurrency - version 1.6.2
httpd24 - Apache HTTP Server - version 2.4.12
thermostat1 - A monitoring and serviceability tool for OpenJDK - version 1.2.0
devassist09 - DevAssistant - a tool designed to assist developers with creating and setting up projects - version 0.9.3
maven30 - Java project management and project comprehension tool - version 3.0.5
rh-passenger40 - Phusion Passenger a fast, robust lightweight web and application server - version 4.0.50
rh-java-commons - Common Java libraries and tools used by other collections - version 1.1
v8 - Google JavaScript Engine - version 3.14.5.10

Software Collections 1.2 provides following tools:

devtoolset-3 - Developer Toolset 3.0:
superceeded by Developer Toolset 3.1 from Software Collections 2.0
perl-516 - A high-level programming language that is commonly used for system administration utilities - version 5.16.3
php54 - superceeded by Software Collections 2.0
php55 - superceeded by Software Collections 2.0
python27 - superceeded by Software Collections 2.0
python33 - An interpreted, interactive, object-oriented programming language - version 3.3.2
ruby193, ruby200 - An interpreter of object-oriented scripting language - version 1.9.3 and 2.0.0
ror40 - Ruby on Rails - version 4.0.2
mariadb55 - A release of MariaDB, an alternative to MySQL - version 5.5.44
mongodb24 - A cross-platform document-oriented database system - version 2.4.9
mysql55 - version 5.5.45
postgresql92 - version 9.2.13
nodejs010 - superceeded by Software Collections 2.0
nginx16 - superceeded by Software Collections 2.0
httpd24 - superceeded by Software Collections 2.0
thermostat1 - superceeded by Software Collections 2.0
git19 - version 1.9.4
devassist09 - superceeded by Software Collections 2.0
maven30 - superceeded by Software Collections 2.0


For more information and installation instructions please visit:

- CC7: http://cern.ch/linux/centos7/docs/softwarecollections
- SLC6X: http://cern.ch/linux/scientific6/docs/softwarecollections

Please note - SLC6X users:

- this release of Software Collections obsoletes previous releases
(from 2014, http://cern.ch/linux/scientific6/docs/softwarecollections -obsolete)

- this release is available only for x86_64 64bit systems.

Jaroslaw Polok for Linux.Support@cern.ch

CERN Centos 7.2 becomes default production CC7 release.

11.01.2016

Dear Linux users.

We have a pleasure to announce that updated CERN Centos Linux (CC7) version:

            ******************************************************
            CC 7.2 becomes default CC7 production version
            ******************************************************

                as of Monday 11.01.2016

For information about CC72, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

What happened to Scientific Linux CERN (SLC) ?

- SLC 6 and SLC5 remain supported Linux versions at CERN
- Next major release: 7 is based on CentOS

please see: http://cern.ch/linux/nextversion
for more information.

Updating CERN CentOS 7.1 to 7.2:

All updates are released to production repositories as of 11.01.2016,
in order to update your system please run as root:

# yum clean all
# yum update

Jaroslaw Polok for Linux.Support@cern.ch

CERN CentOS 7.2 available.

15.12.2015

Dear Linux users.

We have a pleasure to announce that updated CERN Centos Linux (CC7) version:

            *************************************
            CC 7.2 is available for installation
            *************************************
                as of Tuesday 15.12.2015

and will become default CC7 production version on 11.01.2016.

For information about CC72, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

What happened to Scientific Linux CERN (SLC) ?

- SLC 6 and SLC5 remain supported Linux versions at CERN
- Next major release: 7 is based on CentOS

please see: http://cern.ch/linux/nextversion
for more information.

Updating CERN CentOS 7.1 to 7.2:

Due to CERN annual closure, all updates will be released to production
repositories only on 11.01.2016.

Until then CC7 system can be updated by running:

# yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing clean all
# yum --enablerepo=cr --enablerepo={updates,extras,cern,cernonly}-testing update


Jaroslaw Polok for Linux.Support@cern.ch

RHEL7.2 - Red Hat Enterprise Linux 7 Server Update 2 available.

25.11.2015

Dear Linux users.

Red Hat Enterprise Linux 7 Server Update 1 for x86_64
platform is available for installation at CERN,
starting today.

AIMS2 PXE boot target:

    RHEL_7_2_X86_64

installation path:

http://linuxsoft.cern.ch/enterprise/rhel/server/7/7.2/x86_64/

Interactive network installations are possible from
the 'Red Hat Enterprise Linux' PXE boot menu.

Please note that Red Hat Enterprise Linux Server is a
licensed product installable only on authorized
systems. Therefore before you install your
system please request a license assignment from
linux support.

After installation, please do not forget to setup your
system for updates: http://cern.ch/linux/rhel/#rhel7


Jaroslaw Polok for Linux.Support@cern.ch

Scientific Linux CERN 6.7 becomes default production SLC6 release.

06.08.2015

Dear Linux users.

We have a pleasure to announce that updated Scientific
Linux CERN 6 (SLC6) version:

            ******************************************************
                SLC 6.7 becomes default SLC6 production version
            ******************************************************

                       as of Thursday 06.08.2015

* What is Scientific Linux CERN 6.7 (SLC67)  ?

    - A minor release of SLC6X series with all the
    updates since release of 6.6 (and up to 22.07.2015)
    integrated in the base installation tree.

* Upgrading from previous SLC6X releases:

    - fully updated SLC 6X systems do not need any upgrade to
    6.7 version, otherwise standard system upgrade procedure
    will bring systems up to date:
        http://cern.ch/linux/scientific6/docs/quickupdate

* Installation media images for SLC67 can be found at:

    For 32 bit systems:

        http://linuxsoft.cern.ch/cern/slc67/i386/images/
        (install path: linuxsoft:/cern/slc67/i386/)

    For 64 bit systems:

        http://linuxsoft.cern.ch/cern/slc67/x86_64/images/
        (install path: linuxsoft:/cern/slc67/x86_64/)


    After downloading media images from above location
    standard installation procedure can be followed:

        http://cern.ch/linux/scientific6/docs/install


* ISO DVD images can be found at:

        http://linuxsoft.cern.ch/cern/slc67/iso/


* Certification of the SLC 6.7:

- as there are no other changes than these listed above
    a formal certification process does not need to be handled
    for this minor release.

Jaroslaw Polok for Linux.Support@cern.ch

Scientific Linux CERN 6.7 TEST available.

24.07.2015

Dear CERN Linux users.

We have a pleasure to announce that:

    TEST version of SLC 6.7 for i386/x86_64
    ***************************************

is available as of today.

* What is Scientific Linux CERN 6 ?

    It is a CERN customized Linux distribution built on
top of common base platform - Scientific Linux -
which was in turn built from freely available Red Hat
Enterprise Linux 6 Server sources by a joint Fermi and CERN
effort.

* What is Scientific Linux CERN 6.7 (SLC67) TEST ?

- TEST minor release of SLC6X series with all the
    updates (up to 22.07.2015) integrated in the base
    installation tree.

* Installation

- via PXE network boot menu (http://cern.ch/linux/install/)

- non-PXE installation:

Boot media can be found at:

http://linuxsoft.cern.ch/cern/slc67/i386/images/
http://linuxsoft.cern.ch/cern/slc67/x86_64/images/

and corresponding installation paths are:

http://linuxsoft.cern.ch/cern/slc67/i386/
http://linuxsoft.cern.ch/cern/slc67/x86_64/

- Automated PXE installations using AIMS2

Boot targets are:

    SLC67_I386
    SLC67_X86_64

* Upgrading from previous SLC6X releases:

    - fully updated SLC 6X systems do not need any upgrade to
    6.7 version, otherwise standard system upgrade procedure
    will bring systems up to date:
        http://cern.ch/linux/scientific6/docs/quickupdate

Please note:

* SLC67 will become the default SLC6 production version as of:

                    Thursday 06.08.2015
                    *************************

    providing that no show-stopper problems are found.

* SLC67 (yum) updates will be released to production on:

                    Thursday 06.08.2015
                    ************************

* Certification of the SLC67:

- as there are no other changes than these listed above
    a formal certification process does not need to be handled
    for this minor release.

* Problem reporting:

Please report problems to Linux.Support@cern.ch

Jaroslaw Polok for Linux.Support@cern.ch

RHEL 6.7 - Red Hat Enterprise Linux 6 Server Update 7 available

23.07.2015

Dear Linux users.

Red Hat Enterprise Linux 6 Server Update 7 for i386/x86_64
platforms is available for installation at CERN,
starting today.

AIMS2 PXE boot targets are as follows:

    RHEL_6_7_I386
    RHEL_6_7_X86_64

,installation paths are:

http://linuxsoft.cern.ch/enterprise/rhel/server/6/6.7/i386/
http://linuxsoft.cern.ch/enterprise/rhel/server/6/6.7/x86_64/

Interactive network installations are possible from
the 'Red Hat Enterprise Linux' PXE boot menu.

Please note that Red Hat Enterprise Linux Server is a
licensed product installable only on authorized
systems. Therefore before you install your
system please request a license assignment from
linux support.

After installation, please do not forget to setup your
system for updates: http://cern.ch/linux/rhel/#rhel6


Jaroslaw Polok for Linux.Support@cern.ch

CERN Centos 7.1 becomes default production CC7 release.

09.04.2015

Dear Linux users.

We have a pleasure to announce that updated CERN Centos Linux (CC7) version:

            *********************************************
            CC 7.1 becomes default CC7 production version
            *********************************************

                      as of Thursday 09.04.2015

For information about CC71, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

What happened to Scientific Linux CERN (SLC) ?

- SLC 6 and SLC5 remain supported Linux versions at CERN
- Next major release: 7 is based on CentOS

please see: http://cern.ch/linux/nextversion
for more information.

Updating CERN CentOS 7.0 to 7.1:

All updates are released to production repositories as of 09.04.2015,
in order to update your system please run as root:

# yum clean all
# yum update


Jaroslaw Polok for Linux.Support@cern.ch

CC71 - CERN CentOS 7.1 available.

01.04.2015

Dear Linux users.

We would like to announce immediate availability of
next CERN Linux release:

                CC71: CERN CentOS 7.1

For information about CC71, including installation
instructions please visit:

        http://cern.ch/linux/centos7/

What happened to Scientific Linux CERN (SLC) ?

- SLC 6 and SLC5 remain supported Linux versions at CERN
- Next major release: 7 is based on CentOS

please see: http://cern.ch/linux/nextversion
for more information.

Updating CERN CentOS 7.0 to 7.1:

All updates will be released to production repositories on 09.04.2015,
after that date running as root on your system:

# yum update

will update it to version 7.1.

In order to test the update before 09.04.2015, run as root on your system:

# yum update
# yum --enablerepo=cr update


Jaroslaw Polok for Linux.Support@cern.ch

RHEL7.1 - Red Hat Enterprise Linux 7 Server Update 1 available.

05.03.2015

Dear Linux users.

Red Hat Enterprise Linux 7 Server Update 1 for x86_64
platform is available for installation at CERN,
starting today.

AIMS2 PXE boot target:

    RHEL7_U1_X86_64

installation path:

http://linuxsoft.cern.ch/enterprise/7Server_U1/en/os/x86_64/

Interactive network installations are possible from
the 'Red Hat Enterprise Linux' PXE boot menu.

Please note that Red Hat Enterprise Linux Server is a
licensed product installable only on authorized
systems. Therefore before you install your
system please request a license assignment from
linux support.

After installation, please do not forget to setup your
system for updates: http://cern.ch/linux/rhel/#rhel7


Jaroslaw Polok for Linux.Support@cern.ch

[SLC6] Alternative CERN Single Sign On integration method available.

29.01.2015

Dear Linux Users,

We would like to announce the availability of an alternative method for Apache
web server authentication integration with CERN Single Sign On (SSO) system.

Please see mod_auth_mellon documentation for
more information.

At present this method is avalable only on SLC6X systems, in the (near) future
it will be available on CC7 platform.

Jaroslaw Polok for Linux Support.

CERN host certificate autenroll & autorenew method available.

29.01.2015

Dear Linux Users,

We would like to announce the availability of new mechanism allowing for
automated and unattended CERN host certificate obtention and renewal on
SLC5, SLC6 and CC7 systems.

Please see cern-get-certificate documentation for
more information.

Jaroslaw Polok for Linux Support.

Software Collections 1.2 and Developer Toolset 3.0 for Scientific Linux CERN 6

13.11.2014

Dear Linux Users,

CERN Software Collections and Developer Toolset are offerings
for developers on the Scientific Linux CERN 6 platform.

Using a framework called Software Collections, an additional
set of tools is installed into the /opt directory,
as recommended by the UNIX Filesystem Hierarchy Standard.

These tools are enabled by the user on demand using the
supplied scl utility.

CERN Software Collections 1.2 provides following tools:

    Developer Toolset version 3.0, including:
    gcc/g++/gfortran - GNU Compiler Collection - version 4.9.1
    gdb - GNU Debugger - version 7.8
    [ ... and more tools, please see link at the bottom ]

    DevAssistant version 0.9 - A tool which helps with
    creating and setting up basic projects in various languages.

    Git version 1.94 - Fast Version Control System

    Httpd version 2.4.6 - Apache HTTP Server

    Maven version 3.0.5 - Java project management and
    project comprehension tool

    Mongodb version 2.4.9 - High-performance, schema-free
    document-oriented database

    Nginx version 1.6.1 -  A high performance web server
    and reverse proxy server

    Php version 5.5.6 - Scripting language for creating
    dynamic web sites

    Ruby version 2.0.0 - An interpreter of object-oriented
    scripting language

    Ruby on Rails version 4.0

    Thermostat version 1.0.4 - A monitoring and serviceability
    tool for OpenJDK


Please note that products released in the past as part of:

- Software Collections 1.0
    http://cern.ch/linux/scl/
    (Mysql 5.5, Mariadb 5.5, Postgresql 9.2, Python 2.7 and 3.3,
        php 5.4, nodejs 0.10, perl 5.15)

- Developer Toolset 1.1/2.0/2.1
    http://cern.ch/linux/devtoolset/
    ( gcc/g++/gfortran 4.8.2, eclipse 4.3.1, ...)

remain available for installation.

For more information and installation instructions, please visit:

http://cern.ch/linux/scl/

Linux.Support@cern.ch