Release Notes for NorduGrid ARC 7.1.0
September 11, 2025
We are happy to release ARC 7.1.0 which comes with a couple of important bugfixes and a few other minor improvements.
Highlights in this release
As of Slurm 25, there is no longer support for the timeout option to the --get-user-env parameter that the ARC Slurm submission scripts have been using. In ARC 7.1.0 this option has been removed, and the Slurm script now just uses #SBATCH --get-user-env with no custom timeout included. (Bugzilla ticket 4254).
During summer ARGO changed their REST API related to authentication, causing ARC jobs to fail accounting publishing. A patch was submitted to ARC which has been included in ARC 7.1.0 (but will not be included in ARC 6, see policy for support below). ARGO currently supports both old and new authentication API, so currently both ARC 7 and ARC 6 are functioning. However, we encourage upgrade to ARC 7 the sooner the better, to stay on the safe side. (Bugzilla ticket 4269).
The JSON structure of the published public ARC information has gradually been cleaned to follow the agreed schemas more strictly. One such change caused job submission failures from aCT. This has now been fixed (Bugzilla ticket 4256).
The following Bugzilla tickets have been addressed or solved
- 4269 ARGO REST header changes causing accounting problems
- 4258 Missing user.proxy filename
- 4256 Job submission from aCT to ARC fails with nightlies from 24.06.25
- 4254 Job submission to slurm 25 is failing
- 4253 Parsing authtokensgen expression
- 4251 Python3 bug in JURA parsing `endfrom`
- 4248 ARC 7 - Failed to start transfer request: SOAP: Failed processing request
- 4247 CEInfo REST Endpoint produces malformed JSON output if ARC CE doesn't have any RTEs enabled
- 4246 The command "arcctl datastaging dtr state" does not show all states
- 4243 Spelling of some messages from arcctl
- 4242 arcctl datastaging summary files crashes
- 4240 arc/utils/config.py is not using raw string literals for regular expressions
- 4239 arcls asks for password unnecessarily
- 4237 arc-datadelivery-service crashes
- 4222 Tripple warning when running arcctl as client
Documentation
The ARC 7 documentation can be found at this location.
If you miss something or have questions, please contact us!
Installing ARC 7
We recommend to install ARC release using the Nordugrid repository.
There is also a nice ARC tutorial which you can follow if you are new to ARC.
We provide binary builds for all supported versions of Debian, Ubuntu, Fedora, Rocky (compatible with AlmaLinux), and CentOS Stream.
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)
- You can still reach us on our channel dedicated to ARC support
- We will eventually be migrating to another service since Skype is shutting down in May, the new contact info will be announced later.
Future support of ARC 6-series
Now that ARC 7.1.0 is released, we expect one final ARC 6 release, but after that we will only provide security updates of ARC 6. In particular:
- No new feature development is planned or going on for ARC6 and no bug-fixing development will happen on ARC6 code base in the future except for security issues.
- Security fixes for ARC6 will be provided till end of March 2026.
- Production Sites already running ARC 6 will be able to get deployment and configuration troubleshooting help via GGUS Helpdesk till end March 2027. This we call "operational site support".
- In EPEL ARC packages have their major release number as part of the package name, arc6 and arc7 packages can not be confused.
- In the Nordugrid repository, you have to specifically enable the ARC 7 repo to get the ARC 7 update. See repository info.
Previous releases
Details of previous releases can be found at the ARC Releases page