Re: [HTCondor-users] Update to RHEL9 workers nodes and Condor 9.XX

[Jean-Claude CHEVALEYRE <jean-claude.chevaleyre@xxxxxxxxxxxxxxxxx>]

Hello Tom,

It's really clear explaination. Perhaps what you suggest is the best way to obtain an update of compute chain without long interruption service. I will have a look on that.

Thanks

Jean-Claude

---

De: "Thomas Birkett - STFC UKRI via HTCondor-users" <htcondor-users@xxxxxxxxxxx>
Ã: "HTCondor-Users Mail List" <htcondor-users@xxxxxxxxxxx>
Cc: "Thomas Birkett - STFC UKRI" <thomas.birkett@xxxxxxxxxx>
EnvoyÃ: Jeudi 23 Mai 2024 13:56:38
Objet: Re: [HTCondor-users] Update to RHEL9 workers nodes and Condor 9.XX

Hi Jean-Claude,

 

I hope you are keeping well. Nordugrid-ARC do have an EL9 repo that one could use for EL9 distroâs. Itâs specified as Rocky 9 however this will work perfectly fine for Alma as well: http://download.nordugrid.org/repos/6/rocky/9/x86_64/updates/RPMS/

 

As for HTCondor, I would be tempted to upgrade your Condor version on EL7 to the latest (or at least the latest LTS 23.0.x release) as this is the earliest version that supports EL9 (that I can find):

• EL7: https://research.cs.wisc.edu/htcondor/repo/23.0/el7/x86_64/update/
  
• EL9: https://research.cs.wisc.edu/htcondor/repo/23.0/el9/x86_64/update/

Then once youâve upgraded your conder version to Condor23.0.x you can then migrate to EL9. This should hopefully reduce the complexities with managing both an OS and application upgrade in the same process. As Condor 9.x is no longer actively supported (https://htcondor.readthedocs.io/en/latest/version-history/introduction-version-history.html)  Iâm unsure how much luck you would have finding Condor 9.0 for EL9.

 

Many thanks,

 

Tom

 

From: HTCondor-users <htcondor-users-bounces@xxxxxxxxxxx> on behalf of Jean-Claude CHEVALEYRE <jean-claude.chevaleyre@xxxxxxxxxxxxxxxxx>
Date: Thursday, 23 May 2024 at 12:44
To: HTCondor-Users Mail List <htcondor-users@xxxxxxxxxxx>
Subject: [HTCondor-users] Update to RHEL9 workers nodes and Condor 9.XX

Hello,

In order to prepare for the end of CentOS7 support, I am currently considering the replacement of our computing infrastructure.

The actual configuration is currently composed of an ARC CE (nordugrid-arc-condor-6.19.0-1.el7.x86_64), an HTcondor service (condor-9.0.16-1.el7.x86_64). 
These services are installed on CentOS7 servers. In order to make a gradual transition and not mix the change of OS versions and the versions of the applications named above. I would have liked in a first phase to evolve towards an OS in Almalinux.9 without however initially modifying the versions of the ARC CE (6.XX.YY.ZZ9.x86_64) and the HTcondor service (9.0.XX-YY. ZZ9.x86_64).

Can we find somewhere the equivalent versions of ARC CE  ( 6.XX.YY ) and HTCondor ( 6.XX.YY)  for a RHEL9 like version which would facilitate this transition.

All advice and ideas are welcome.


Best Regards
Jean-Claude

_______________________________________________
HTCondor-users mailing list
To unsubscribe, send a message to htcondor-users-request@xxxxxxxxxxx with a
subject: Unsubscribe
You can also unsubscribe by visiting
https://lists.cs.wisc.edu/mailman/listinfo/htcondor-users

The archives can be found at:
https://lists.cs.wisc.edu/archive/htcondor-users/