Release Notes for NorduGrid ARC 6.21.1

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December 10, 2024

This patch release solves the problems introduced in 6.21.0 related to the changes to the infosys for Bugzilla ticket #4196. The only file changed in this patch release is ARC1ClusterInfo.pm. No configuration changes are needed.

Details

Several problems were discovered, and the relevant block in info.xml now has a different format compared to the first attempt.

There is now one OtherInfo entry per internal AREX job state - and as before, per share.

In addition we have added the same metrics for any vomsvo defined.

The possible states are:

INLRMS:Q
INLRMS:R
INLRMS:O
INLRMS:E
INLRMS:S
PREPARING
FINISHING

Here is a snippet of how the information could look like in info.xml:

<ComputingShare BaseType="Share" CreationTime="2024-12-10T09:46:11Z" Validity="10800">
        <ID>urn:ogf:ComputingShare:arctest-el7:main</ID>
        <Name>main</Name>
        <OtherInfo>CoreCount=INLRMS:R=1</OtherInfo>
        <OtherInfo>CoreCount=INLRMS:Q=3</OtherInfo>
        <OtherInfo>CoreCount=PREPARING=2</OtherInfo>
        <OtherInfo>CoreCount=FINISHING=5</OtherInfo>
        <..truncated..>
</ComputingShare>

The following Bugzilla tickets have been addressed or solved

4221 InfoSys lacks information compared to previous version
4196 ARC should publish job and core summary information

Documentation

The ARC 6 documentation can be found at this location.

If you miss something or have questions, please contact us!

Installing ARC 6

We recommend to install ARC release using the Nordugrid repository.

Start with the basics
Get production ready

Note that if you instead install from EPEL for RHEL7 compatible systems, the ARC 6 packages can be found as nordugrid-arc6-* and not nordugrid-arc-*. This was needed in order to supply both ARC 5 already available for RHEL7 and the new ARC 6.

We provide binary builds for all supported versions of:

Debian (i386 and amd64)
Fedora (x86_64)
CentOS/RHEL (x86_64)
Ubuntu (i386 and amd64, both LTS and interim releases) - from Ubuntu 20.04 no i386 support

In addition we build nightly packages for some older platforms.

Contributing

You can submit pull requests to our public repo which mirrors our GitLab repo.

The pull requests will be automatically copied over to our Gitlab repo where they will be merged into the source-code if accepted.

Getting in touch

If you need help with the configuration file or have any other questions related to ARC 6, please contact us via

Email: (Subscribe)
Skype channel dedicated to ARC 6 support

Coming ARC 7 release

Start getting ready for ARC 7. We expect a release after summer. You can already now install the testing version of ARC from the testing repository. For upgrade instructions, please see migration guide.

The support policy of ARC 6 will follow the same policy we had for ARC 5: 1 year security updates, no more development of ARC 6 once ARC 7 is out.

Installing from EPEL

Once the release is out, it can be installed from EPEL using package-name types: nordugrid-arc7-*

Previous releases

Details of previous releases can be found at the ARC Releases page