- Qlustar General - Qlustar Mailing Lists

[Qlustar-General] Physical front-end
by shoup.31＠osu.edu 08 Feb '21

08 Feb '21

Hi, I am new to this list. I have a small cluster (3 physical compute nodes, (8 cores/16 threads/64GB ram each) head node & VM-FE) with qlustar 12.0 installed. I am using it to run the Einstein Toolkit (numerical general relativity package). I would like to setup a physical front-end node for my system. My questions are: 1. Does the physical front-end node have to be net-bootable (via the head node)? 2. What qlustar software do I need on it? Is there an automated method for installing it? 3. Do I have to manually install slurm on it to submit jobs to the cluster from the physical front end node? 4. Do I need to register the physical front end node in qluman-qt? Thanks for any help you can provide. Tony...

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[Qlustar-General] Attribute 'filter_group' is not allowed in section 'nss'
by rolnas＠gmail.com 04 Feb '21

04 Feb '21

Hi, In Qlustar 12 sssd.conf file contains filter_group attribute, when by manual it should be filter_groups. Nothing very bad happens, only warning in log file and this setting is ignored. Regards Rolandas

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[Qlustar-General] Critical sudo vulnerability
by Roland Fehrenbacher 29 Jan '21

29 Jan '21

A critical sudo vulnerability has been discovered. You are advised to update as soon as possible. See https://qlustar.com/news/qsa-0128211-sudo-vulnerabilities for details

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[Qlustar-General] After fresh qlustar 12 install no way to generate access token
by rolnas＠gmail.com 26 Jan '21

26 Jan '21

Hi, root@lxibm000 ~ # qluman-cli --gencert Traceback (most recent call last): File "/usr/lib/python3/dist-packages/qluman-12/qluman-cli.py", line 1549, in <module> main() File "/usr/lib/python3/dist-packages/qluman-12/qluman-cli.py", line 1542, in main cluster = Cluster(config=config) File "/usr/lib/python3/dist-packages/qluman-12/client/cli/network.py", line 76, in __init__ self._node = Node(config=config, on_db_update=self._on_db_update) File "/usr/lib/python3/dist-packages/qluman-12/client/cli/network.py", line 53, in __init__ super().__init__(*args, socket_path=socket_path, TypeError: __init__() missing 1 required keyword-only argument: 'name' The same with qluman-cli --gencert -u admin -o token or qluman-cli --gencert -u admin qlustar-initial-config was done already and server rebooted. Regards Rolandas Naujikas P.S. Can newer version of qluman be used for older version of headnode ? Or it is better to use the same major version ?

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[Qlustar-General] Security/Bug fix releases 12.0.0.1-b528f1339 / 11.0.1.5-b527f1338/40
by Roland Fehrenbacher 20 Jan '21

20 Jan '21

The Qlustar releases 12.0.0.1-b528f1339 and 11.0.1.5-b527f1338/40 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-0118211-linux-kernel-vulnerabilities https://qlustar.com/news/qsa-0118212-security-update-bundle https://qlustar.com/news/qsa-0118213-security-update-bundle The following non-security related enhancements/bug fixes are included: Both 11.0 and 12.0 update to - The latest Nvidia graphics drivers 460.32.03 supporting recently introduced Nvidia hardware. - The latest ZFS 0.8.6 fixing a memory management bug. Fixes for 12.0 only: - QluMan 12.0.0.39 * Detect IB nics with names other than ib[0-9] * Fix preserving minimized/maximized state for windows * Fix cloning of "Network FS Mounts" configs * Fix kernel options editor for "Network FS Mounts" configs

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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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