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Install Gaussian 16
by yohann.clement＠univ-lyon1.fr 19 Oct '22

19 Oct '22

Hello, I'm trying to install Gaussain 16 on Qlustar. I have some troubles to install it due to some right management. Indeed, Gaussian does not allow the directory on which it is installed to be accessible to others. The director should only be accessible to the owner and a group. I have created a group called gauss with Qluman in which I have added a user for a test. But the created group is not recognized in Chroot-focal. Could you tell me if you alreeady have installed G16 in Qlustar. If so could you kindly send me the procedure. Best,

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Qlustar 12 and openmpi 4.0
by rolandas.naujikas＠mif.vu.lt 03 Oct '22

03 Oct '22

Hi, In my cluster I found problems running some MPI applications (for e.g. via mpi4py) and it is related to defaults in /etc/openmpi/4.0/openmpi-mca-params.conf. When I changed btl to ^openib or to vader,selft,tcp (in case tcp nodes) - it started to work, but in this case it doesn't use UCX anymore. Regards Rolandas

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centos8/AlmaLinux chroot has no repos
by deroshia＠uga.edu 19 Aug '22

19 Aug '22

Hi All, Either with a fresh install of the latest Qlustar or when creating a centos8 chroot in Qluman (or with manage-qlustar-chroot), I see the following errors and no /etc/yum.repos.d directory is created: [Harmless] Failed to find download link for qlustar-12.0-base [Harmless] Failed to find download link for qlustar-12.0-repos Running post-install script /usr/lib/rinse/qlustar-12.0-centos8/post-install.sh: error: /etc/pki/rpm-gpg/RPM-GPG-KEY-AlmaLinux: import read failed(2). error: /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-8: import read failed(2). error: /etc/pki/rpm-gpg/RPM-GPG-KEY-QLUSTAR: import read failed(2). error: /etc/pki/rpm-gpg/RPM-GPG-KEY-OpenHPC-2: import read failed(2). Running dnf makecache Unable to detect release version (use '--releasever' to specify release version) post-install.sh : done. Installation complete. == Done with basic chroot. Starting to add extra packages ... == Unable to detect release version (use '--releasever' to specify release version) Error: There are no enabled repositories in "/etc/yum.repos.d", "/etc/yum/repos.d", "/etc/distro.repos.d". ========= ------- Error ------- ========= manage-qlustar-chroot: Execution in chroot "/srv/apps/chroots/centos8" failed: /usr/bin/yum -y install bash-completion git man ql-hpl-tools redhat-lsb-core singularity telnet unzip zip lmod-defaults-gnu9-openmpi4-ohpc ssmtp ==> Exiting ... Poking around in the repos site, I can see qlustar-12.0-base and qlustar-12.0-repos in an older directory, but not in the AlmaLinux repo directory. If I download and copy those older rpms into the chroot and install them, then re-run the install chroot command with the overwrite option, I can get the chroot to complete without errors: rpm -ivh qlustar-12.0-repos-12.0.0.7-1.ql.el8.noarch.rpm qlustar-12.0-base-12.0.0.7-1.ql.el8.noarch.rpm manage-qlustar-chroot -v -a create -A 'amd64' -b '/srv/apps/chroots' -d 'centos' -n centos8 -r '12.0' -s 'centos8' --openhpc --overwrite Have any of you been able to set up a centos8 chroot successfully with a new install using the qlustar-installer-12.0.1-0.iso? Thanks in advance, Jeff

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Security/Bug fix releases 12.0.1.0-b548f1441 / 11.0.1.17-b549f1440
by Qlustar List 09 Aug '22

09 Aug '22

The Qlustar releases 12.0.1.0-b548f1441 and 11.0.1.17-b549f1440 are ready including a number of security/bug fixes and improvements. Please check the following web pages for details about security fixes and special update instructions: https://qlustar.com/qsa/2022/0808221 https://qlustar.com/qsa/2022/0808222 The following non-security related enhancements/bug fixes are included: For 12.0 only: - Update to QluMan 12.0.7.5 - Update Nvidia drivers to 515.65.01 (fixes CVE-2022-31607, CVE-2022-31608, CVE-2022-31615) - Update to ZFS 2.1.5 - Added Lustre 2.15

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Enabling pam_slurm and pam_slurm_adopt
by jan.kreps＠cvut.cz 04 Aug '22

04 Aug '22

Hello everyone, I want to enable pam_slurm and pam_slurm_adopt in my new cluster. In https://qlustar.com/about-qlustar/workload-management is written, that "QluMan provides an option to enable the Slurm PAM module." Unfortunately I can not find such an option in QluMan. In Qlustar documentation I did not find this information either. Can you provide information how to achieve this? Thanks Jan

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Password sync for ldap users.
by saeed.s.jahromi＠gmail.com 02 Jul '22

02 Jul '22

Greetings, I have qluster 12 installed on a small HPC in our university. To create users remotely, I usually use the terminal and .ldif files to create users. I also use the following command to change users passwords from the terminal: ldappasswd -Z -D "cn=admin,dc=gavazang,dc=qlustar" -W -S "cn= saeed,ou=users,dc=gavazang,dc=qlustar" This works and the password is changed. However, the problem is that once in a while the user cant connect to the cluster and I have to reset the password again and again and this happens frequently. Should I do anything to sync the passwords after changing them? Or am I doing something wrong here? thanks in advance for your assistance

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Qlustar Feature Update 06/22
by Qlustar List 28 Jun '22

28 Jun '22

A number of new Qlustar features were completed recently and published together with the latest security updates. QluMan 12.0.7.3 highly improves on its slurm management capabilities basically making the slurm component feature complete. It adds - Real SLURM QOS MANAGEMENT [1] in the GUI. QoS can now easily be added, edited, removed and assigned. The full list of QoS properties may be added/removed and manipulated including sanity checking the values entered. - SLURM ASSOCIATION AND LIMITS MANAGEMENT [2] has been added in the GUI unleashing the power of advanced slurm resource management to QluMan admins. Various visual filters have been created to achieve a comprehensive display of slurm associations. The full list of association settings may be added/removed and manipulated including sanity checking the values entered. * An 'LDAP GROUP <-> SLURM ACCOUNT' SYNC MECHANISM [3] has been designed to automate slurm user setup upon creation of the user in LDAP. Slurm accounts may be associated with LDAP groups such that depending on users primary group the corresponding slurm account will be assigned as their default. * Cron-based LDAP DB BACKUP was introduced to allow a disaster recovery in case the LDAP DB becomes corrupted. Other new features: - Update to AlmaLinux 8.6 [1] https://docs.qlustar.com/Qlustar/12.0/ClusterOS/qluman-guide/components/slu… [2] https://docs.qlustar.com/Qlustar/12.0/ClusterOS/qluman-guide/components/slu… [3] https://docs.qlustar.com/Qlustar/12.0/ClusterOS/qluman-guide/components/slu…

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Security/Bug fix releases 12.0.0.12-b548f1436 / 11.0.1.16-b549f1437
by Qlustar List 24 Jun '22

24 Jun '22

The Qlustar releases 12.0.0.12-b548f1436 and 11.0.1.16-b549f1437 are ready including a number of security/bug fixes and improvements. Please check the following web pages for details about security fixes and special update instructions: https://qlustar.com/qsa/2022/0624221 https://qlustar.com/qsa/2022/0624222 The following non-security related enhancements/bug fixes are included: For 12.0 only: - Update to AlmaLinux 8.6 - Update to QluMan 12.0.7.3 - Update to MLNX OFED 5.4-3.4.0.0 - Update to Lustre 2.12.9

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Using external LDAP server
by jan.kreps＠cvut.cz 13 Jun '22

13 Jun '22

Hello everyone, is there a way how to configure Qlustar to use external LDAP server instead of the one included in the installation? We run our own ldap server with passthrough authentication to Kerberos and want to use existing user accounts for Qlustar cluster as we did on our old cluster. Cheers, Jan

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login-c unknown hardware
by yohann.clement＠univ-lyon1.fr 25 May '22

25 May '22

Hello, When installing qlustar, I choose the option front end via kvm when I follow qluman, a message appears on login-c: unknown hardware. I can't connect to it via ssh what services should be activated/configured to connect to the front end Thank you yohann

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