Scientific%20Linux

1
Scientific Linux

• Connie Sieh
• csieh_at_fnal.gov
• CSAM Meeting
• May 2, 2006

2
Scientific Linux

• Presentation Overview
• History
• Value Added
• Organization
• Metrics
• Differences between S.L. sites
• Roadmap

3
Scientific LinuxHistory

• We've been making Fermi Linux since 1998
• Not Supported
• Fermi Linux 5.0.2 - August 1998
• Fermi Linux 5.2.1 - August 1999
• Fermi Linux 6.1.1 - April 2000
• Fermi Linux 7.1.1(2) - August 2001
• Fermi Linux 7.3.1(2) - September 2002
• Fermi Linux 9.0.1 - June 2003

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Scientific LinuxHistory

• Fermi Linux transforms into Scientific Linux
  Fermi
• S.L. Fermi LTS - January 2004
• Fermi Linux 3.0.1 i386
• Scientific Linux 3.0.2, 3.0.3, 3.0.4, 3.0.5
  i386, x86_64
• S.L. Fermi LTS i386, x86_64 - September 2005
• Scientific Linux 4.1 , 4.2 i386, x86_64
• Scientific Linux
• S.L. i386, x86_64, ia64 - May 2004
• 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5
• S.L. 4 i386, x86_64, ia64 - February 2005
• 4.0, 4.1, 4.2

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Scientific LinuxHistory

• Why We Did It
• In 2003 RedHat made support policy changes
• RedHat switched from free distribution to charged
  subscription
• Fall HEPIX 2003 this issue was discussed but
  nothing was decided
• CERN contacted us to do a collaboration of a RHEL
  rebuild
• For the next HEPIX meeting we created a prototype
  of a RHEL 3 rebuild. We called this prototype
  Scientific Linux 3.0.1

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Scientific LinuxHistory

• Why We Do It
• Benefits
• With collaboration you get more than the sum of
  the parts.
• Expertise from different people which makes for a
  better release.
• Experimenters are not tied down to one site such
  as CERN or Fermi
• Free and Redistributable You can give the
  release to anyone.

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Scientific LinuxHistory

• What We Do
• Rebuild Upstream Vendor source code
• Update Upstream Vendor packages
• Ongoing rebuild of new security errata
• Add packages
• Modify Installer for Site Customizations

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Scientific LinuxValue Added

• Rebuild source code
• Quarterly Updates
• Compatible with RedHat Enterprise Linux
• Update RedHat packages, try really hard to not
  do this
• Ongoing Security Errata for a minimum of 3 years,
  possibly longer. ( Upstream Vendor provides 5
  years)

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Scientific LinuxValue Added

• Added packages
• Rebuilt RedHat Cluster Suite
• Rebuilt RedHat Developer Suite
• Openafs
• Yum, apt-rpm
• Bug fix packages (SL-....)

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Scientific LinuxValue Added

• Site Customizations
• Allows for a site to customize their own release
• Scripts are provided to make this easy to do
• Sites can
• Add packages
• Upgrade or Downgrade packages
• Make modifications to the installer
• Change installer and installed kernel
• What about binary compatibility ?

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Scientific LinuxValue Added

• Support Infrastructure
• https//www.scientificlinux.org/
• ftp//ftp.scientificlinux.org/linux/scientific/ ,
  rsync
• Hepix
• Mailing Lists
• scientific-linux-users
• scientific-linux-devel
• scientific-linux-errata
• scientific-linux-announce

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Scientific LinuxOrganization

• Developers
• Connie, Troy (FNAL)
• Main Developers
• Jarek, Jan (CERN)
• In charge of ia64
• Stephan (DESY)
• In charge of AFS
• Others (various labs)
• Testing, answer questions

13
Scientific LinuxMetrics

• The following statistics were gathered from
  ftp.scientificlinux.org log files
• These numbers are the minimum. We know that they
  are higher.
• These numbers are based on the yum and apt access
  to the errata

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Scientific LinuxMetrics
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Scientific LinuxMetrics
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Scientific LinuxRoadmap

• Scientific Linux 3.0.x
• Security support for S.L. 3.x
• Support will continue until Oct. 31, 2007
• Currently working on S.L. 3.0.7
• Will be doing a S.L. 3.0.8
• (As long as Update 8 is the last RHEL 3 update)

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Scientific LinuxRoadmap

• Scientific Linux 4.x
• Security support for S.L. 4.x
• Support will continues until at least February
  2008, possibly longer.
• Currently working on S.L. 4.3

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Scientific LinuxRoadmap

• Scientific Linux 5.x
• Dependant on RedHat's schedule
• Doing preliminary work on Fedora Core 5
• Itanium Support
• Goes away when CERN get's rid of their Itaniums.
  No timeline yet. This was discussed at HEPIX and
  on mailing lists.

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Scientific LinuxRoadmap

• SciDAC
• SL developers are participating in the CANTIS
  SciDac proposal.
• "FNAL will ... address host performance issues
  including Linux operating system under load" and
  support distribution of SL to SciDAC researchers.
• Requested funding at .4 FTE, primarily for for SL
  packaging distribution for SciDAC as well as
  some (small) development.

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Scientific LinuxRoadmap

• Scientific Programs
• There is a growing demand to get HEP specific
  programs into the base S.L.
• We need developers of these programs to provide
  the rpm's.

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Scientific LinuxRoadmap

• Scientific Linux Workshop
• Scientific Linux Specific
• Creating a site
• Creating a live cd
• General Linux Stuff
• Making RPM's
• Securing your system

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Scientific Linux References

• https//www.scientificlinux.org/
• http//www.fnal.gov/cd/unix/linux/
• ftp//linux.fnal.gov/linux/
• ftp//ftp.scientificlinux.org/linux/scientific/
• https//www.scientificlinux.org/about/stats/
• http//distrowatch.com/table.php?distributionscie
  ntific

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Scientific LinuxDifferences

• SLC
• Changes compared to plain S.L. not documented
• CERN's Kerberos
• XFS
• Local Settings
• CERN's Software (cern-lib, CASTOR, LEMON)

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Scientific Linux FermiDifferences

• SLF
• Document our changes compared to plain S.L.
• ftp//linux.fnal.gov/linux/lts4x/i386/sites/Fermi/
  Fermi.releasenote.latest
• Tighten security
• Fermi Kerberos and OpenSSH
• Add Workgroups so users can install what is
  needed
• Local Settings (timezone, ntp, yum, etc...)
• Add useful to FNAL packages

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Scientific Linux FermiMetrics
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Scientific Linux FermiRoadmap

• SLIP - Scientific Linux Inventory Project
• Client to inventory software and hardware
• Server to collect the data from the clients
• Data to be fed into the Hurcules System
• For more info see SLIP Design Note

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Scientific Linux Fermi References

• Fermi
• http//www.fnal.gov/cd/unix/linux/
• ftp//linux.fnal.gov/linux/
• Mailing List
• linux-users_at_fnal.gov
• linux-announce_at_fnal.gov
• Unix Users Meeting
• Outside
• http//distrowatch.com/table.php?distributionferm
  i