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[Qlustar-General] Happy new year with Qlustar 12
by Roland Fehrenbacher 09 Jan '21

09 Jan '21

The Qlustar team wishes you all the best for the new year and is pleased to announce the immediate availability of Qlustar 12.0.0 for download [1]. It updates Qlustar's core platform to current Ubuntu 20.04 LTS. The CentOS [2] edge platforms remain based on 7.9 (with integrated OpenHPC [3] 1.3.9) and 8.3 (OpenHPC 2). The highlight of this release is the move to LDAP as the user and group name service, replacing the NIS setup used earlier. A fully configured LDAP instance is created at installation time. Net-boot nodes may directly authenticate users against this instance or use conveniently synced flat passwd/group files when scalability is critical. QluMan has a new optional component [4] to manage the Qlustar LDAP instance. It consists of a User and Group Management interface, as well as a powerful tool to import users/groups from passwd-like flat files. The second major new QluMan feature is the ability for easy and clean integration of external LDAP or Active Directory services with the new Nameservice Providers [5] and Nameservice Configs [6] dialogs. Finally, the QluMan GUI has been ported to the current QT 5 toolkit. This was a huge 'under the hood' effort that ensures the long-term maintainability of QluMan and also improves its stability. Highlights among the various major component updates include Kernel 5.4.x, Slurm 20.02.x, CUDA 11.0, ZFS 0.8.5 and BeeGFS 7.2. Please read the release notes [7] for more details. [1] https://www.qlustar.com/download [2] https://www.centos.org/ [3] https://openhpc.community/ [4] https://docs.qlustar.com/Qlustar/12.0/ClusterOS/qluman-guide/components/lda… [5] https://docs.qlustar.com/Qlustar/12.0/ClusterOS/qluman-guide/Cluster-Networ… [6] https://docs.qlustar.com/Qlustar/12.0/ClusterOS/qluman-guide/Config-Classes… [7] https://docs.qlustar.com/Qlustar/12.0/ClusterOS/release-notes.html

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[Qlustar-General] Qlustar 12 (Ubuntu 20.04)
by randomtasks＠gmail.com 04 Jan '21

04 Jan '21

Hello. Back in June 2020, one of the news posts seemed to indicate that Qlustar 12 (with Ubuntu 20.04 support) was expected sometime in 2020. I've been eagerly awaiting this for months. Any word on when Ubuntu 20.04 will be supported? > This is the last feature addition to Qlustar 11. We now work at full steam on the > Qlustar 12 release based on Ubuntu 20.04 and scheduled for some time later this year. Thanks for any update! ~Rodney

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[Qlustar-General] OpenHPC 2.0/CentOS 8.3 on Qlustar 11
by Roland Fehrenbacher 04 Jan '21

04 Jan '21

The Qlustar team is pleased to announce the immediate availability of OpenHPC 2.0 [1] on top of CentOS 8.3 as an update to Qlustar 11. You can migrate your existing images and chroots to this new release in the usual way [1]. New ones can be generated via QluMan. Note that the disappearance of CentOS [3] as we knew it in the past, will not have a negative impact on Qlustar users running CentOS based nodes. There will be a simple migration path to whatever new RHEL compatible distribution will turn out to be the best choice at the end of 2021. Migration will involve nothing more than a usual Qlustar security update. [1] https://openhpc.community/openhpc-2-0-released/ [2] https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/Administ… [3] https://blog.centos.org/2020/12/future-is-centos-stream/

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[Qlustar-General] update the invidia driver in chroot
by a.gabbana＠tue.nl 19 Dec '20

19 Dec '20

Hi, I would like to install cuda11 in a cluster. In order to do so, I would need to first install the latest nvidia driver 450. In bionic the default is the 440 version; is there any way to update to the latest nvidia driver? with best regards A.

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[Qlustar-General] Mounting an existing LV
by Ansgar Esztermann-Kirchner 07 Dec '20

07 Dec '20

Hello List, I'm wondering if anyone is mounting pre-existing (local) storage on a Qlustar node, and if so, how you go about it? My initial guess was to re-define the setup (xfs on LVM on mdraid) in the Disk Config assigned to the node, and mark it with preserve_always, but then the node refuses to boot correctly because setup-storage complains it cannot preserve my LV as it doesn't exist. I guess I could create per-node fstab stubs containing just the necessary lines, push them to the nodes using common/image-files with softgroups, and then add a common/rc.boot script to look for such stubs and mount them, but maybe there's a more integrated way? Thanks, A. -- Ansgar Esztermann Sysadmin Dep. Theoretical and Computational Biophysics http://www.mpibpc.mpg.de/grubmueller/esztermann

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[Qlustar-General] Security/Bug fix releases 11.0.1.4-b522f1319/21 / 10.1.1.17-b521f1318
by Roland Fehrenbacher 30 Nov '20

30 Nov '20

The Qlustar releases 11.0.1.4-b522f1319/21 and 10.1.1.17-b521f1318 are ready including a number of security and bug fixes. Please check the following web pages for details about security fixes and special update instructions: https://qlustar.com/news/qsa-1126201-linux-kernel-vulnerabilities https://qlustar.com/news/qsa-1126202-security-update-bundle This release also includes the following version updates: - Centos 7 version is now 7.9 - ZFS version is now 0.8.5

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[Qlustar-General] Security/Bug fix releases 11.0.1.3-b522f1314 / 10.1.1.16-b521f1313
by Roland Fehrenbacher 10 Oct '20

10 Oct '20

The Qlustar releases 11.0.1.3-b522f1314 and 10.1.1.16-b521f1313 are ready including a number of security and bug fixes. Please check the following web pages for details about security fixes and special update instructions: https://qlustar.com/news/qsa-1009201-linux-kernel-vulnerabilities https://qlustar.com/news/qsa-1009202-security-update-bundle

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[Qlustar-General] I subscribed to the mailing list, and posting, but not getting posted
by linux2cloud.consultant 11 Sep '20

11 Sep '20

Hi Admin, I have subscribed to the mailing list, I posted one introduction mail about me and what I am planning to with HPC but my mails are not seeing in the mailing list Can you please check Linux-AWS Consultant Sent with [ProtonMail](https://protonmail.com) Secure Email.

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[Qlustar-General] Hi, introduction new comer
by linux2cloud.consultant 10 Sep '20

10 Sep '20

Hi All, I am Saji. Just joined the mailing group. thought about say a HI, and a introduction about me. I have good Linux exposure and now working on AWS cloud based solutions. Very less experience in python programming, but picking it up. Very less knowledge or experience in HPC, have installed and configured OpenHPC, rockcluster, and now going to do Qlustar Recently me had idea to work on write up on comparing opensource HPC [OpenHPC, RockCluster, Qlustar] . I am waiting for my monster PC to be ready, so that I try out all three and do a comparison study . By this month end I will be assempling the required PC and working on it. Will be updating to the mailing lis tthe progress Thanks Saji Linux-AWS Consultant Sent with [ProtonMail](https://protonmail.com) Secure Email.

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[Qlustar-General] NFS boot scripts do not run
by stephanie.kerckhof＠ec.europa.eu 25 Aug '20

25 Aug '20

Hello, We are encountering problems with the NFS boot scripts. We already used this on another installation of Qlustar. It was working fine, but on our new install, it seems that the scripts are not executing at boot anymore. Here is the procedure we followed: 1. We created a script in /etc/qlustar/common/rc.boot 2. We made the script executable using chmod +x If I look on the node, the script is visible in the NFS folder /etc/qlustar/common/rc.boot. If I execute it manually, it has the behaviour I'm expecting from it. Do you have any idea of why the NFS scripts could have some problems in executing at boot time? I was also wondering if there would be a way to start a service automatically at boot on a node? Thanks already for your help.

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