- Qlustar General - Qlustar Mailing Lists

[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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[Qlustar-General] Security/Bug fix releases 11.0.1.2-b522f1305 / 10.1.1.15-b521f1304
by Roland Fehrenbacher 22 Aug '20

22 Aug '20

The Qlustar releases 11.0.1.2-b522f1305 and 10.1.1.15-b521f1304 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-0821201-linux-kernel-vulnerabilities https://qlustar.com/news/qsa-0821202-security-update-bundle The following non-security related enhancements/bug fixes are included: + Fixes - The package openmpi-bin was not installable. This is fixed in an updated version.

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[Qlustar-General] Compute nodes do not boot
by Alexey Yaremchuk 12 Aug '20

12 Aug '20

Dear experts, I am trying to install a Qlustar OS on several Ethernet-linked machines and still compute nodes do not boot. The installer reports that there have been no errors, head and FE VM nodes do start, Qluman sees them and I could not find any error messages from dmesg except insignificant note that firmware load for regulatory.db failed. I installed a Debian system on one of compute nodes and upon configuring the network interface with a static address, established an ssh connection both with the head and VM-FE nodes. At least this ensures that cables are OK. If I configure it as dhcp, it does not discover dhcp server. If I force BIOS boot from the network, I receive either PXE-E51: No DHCP or proxyDHCP offers were received from Intel Boot Agent, if I make BIOS use only Legacy OpROM, or Media Present ... Start PXE Boot over IPv4 ... with a silent subsequent fall back into BIOS Setup, if I choose to use UEFI driver. I tried different combinations of Boot Device Control {UEFI_and_Legacy_OpROM|UEFI_only|Legacy_OpROM_only}, Boot from Network Devices {Legacy_OpROM_first|UEFI_driver_first}, OS TYPE {Other_OS|Windows_UEFI_mode} in BIOS Setup, and none of them worked. Qluman confirms that Boot network is configured as dhcp, and systemctl says that there are no failed services. Since I am the only one on the forum with such a problem, probably it can be fixed easily. However, I have no idea what to check and look forward for help. Thanks, Alexei

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[Qlustar-General] openmpi-bin
by marra＠irc.cnr.it 12 Aug '20

12 Aug '20

Dear Qlustar experts, I am facing a problem with the installation of software on the bionic chroot. I need to install a software called OpenFOAM (CFD simulations). It requires as a dependency the package openmpi-bin, but when I try to install it with the following commands: # chroot-bionic # apt install openmpi-bin I get the following diagnostic messages: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: openmpi-bin : Depends: openmpi-common (= 2.1.1-ql.1) but it is not going to be installed E: Unable to correct problems, you have held broken packages. I have so tried to uninstall the already installed mpi packages (openmpi-common-4.0, openmpi-gcc, openmpi-gcc-4.0) hoping to fix the broken packages, but the result is exactly the same, I continue to get this error. The strange for me is that in the output of command: # apt list the openmpi-bin package is listed as: openmpi-bin/11.0-bionic 2.1.1-ql.1+11-bionic amd64 Then, after having removed all openmpi* packages already installed, I was sure that by using the command: # apt install openmpi-bin would have rebuild the correct dependencies and installed aligned openmpi packages. Instead I got always the same error. I think this could be a common issue so I decided to share my experience with the other Qlustar users. I would be very grateful to receive your hints. Best regards, Franco

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[Qlustar-General] nfs fails on compute nodes
by marra＠irc.cnr.it 12 Aug '20

12 Aug '20

Dear Qlustar experts, after a successful installation of the latest version of Qlustar (ver 11.0.1), I am facing a problem with the setup of computing nodes: they do not mount the nfs directories for apps and home. To me, everything looks correctly set up (checking with the qluman-qt application), Filesystem Exports and Network FS Mounts look correctly defined and assigned to the configs of the nodes. The only signal that something in the configuration of nodes is maybe not correct is an empty /etc/fstab, but probably the mount mechanism is different from standard mounts. What happens is that doing ssh to a compute node nor the apps nor the home directories are found. With the previous version 10.0 I did not have (on a different older cluster without IB) this issue. Please, can you give me some hints about what I have to check to fix this issue? Thank you in advance. Best regards, Franco

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