CentOS 8 support is now available as a third Qlustar edge-platform and
was published together with the latest security updates. It comes with
the same functionality as our CentOS 7 port which includes out of the
box OpenHPC 1.3.9 integration, Slurm 18.10.x, up-to-date Nvidia 340.x
drivers, Lustre client and BeeGFS client.
Making your compute nodes switch to CentOS 8 on an existing Qlustar
cluster installation is extremely simple: First create a CentOS 8 chroot
[1] optionally adding OpenHPC base support, then generate a CentOS 8 OS
image [2] selecting the modules you require and finally a boot config
[3] using the just generated image. After assigning [4] this boot config
to the nodes you want to run it on, you just need to reboot them and
voilà your CentOS 8 nodes are ready to be used.
Note that OpenHPC 1.3.9 was originally built for CentOS 7.7. We had to
make a few adjustments to make the OpenHPC parts relevant to Qlustar
(compilers, MPIs, library packages and applications) work for
CentOS 8. The OpenHPC test-suite was run successfully against these
components. Once OpenHPC 2.0 will be out, we'll publish instructions to
update to it. This will be straightforward.
Additional improvements with this release: Updates to the latest Lustre
2.12.4 LTS release and the newest Nvidia graphics drivers 340.64 adding
support for the latest Nvidia GPUs. These two updates apply to all
Qlustar 11.0 platforms (Ubuntu 18.04 and CentOS 7/8).
[1] https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/QluMan_G…
[2] https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/QluMan_G…
[3] https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/QluMan_G…
[4] https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/QluMan_G…
The Qlustar releases 11.0.0.8-b518f1287 and 10.1.1.12-b521f1292 are ready
including a number of security and bug fixes. Please check the following
web pages for details about security fixes:
https://qlustar.com/news/qsa-0406201-linux-kernel-vulnerabilitieshttps://qlustar.com/news/qsa-0406202-security-update-bundle
The following non-security related enhancements/bug fixes are included:
* Qlustar 11.0.0.8-b518f1287 updates to
+ the latest Lustre LTS release 2.12.4
+ the latest Nvidia graphics drivers 440.64 supporting recently introduced
Nvidia hardware
A number of new Qlustar features were completed recently and published
together with the latest security updates ([1], [2]). QluMan 11.0.3.1 has the
following new capabilities:
* The 'Write Files' dialog [3] got a complete revamp:
+ The configuration files/links belonging to different QluMan 'Config
Classes' are now neatly arranged in a single collapsible tree-view.
+ Colored LEDs have been introduced to indicate whether pending
changes of the config files are waiting to be written and which
files are affected.
+ It is now straightforward to cycle through the list of changed files
exclusively, allowing for a fast overview of pending changes in diff format.
+ Selecting individual Config Classes to be written has become a lot
simpler by providing checkboxes in the tree-view.
+ Overall, the new dialog greatly enhances the clarity of the cluster
configuration space. It provides way better control and confidence
when performing configuration changes.
* Messages for config file writing have been added to the QluMan Log Viewer [4].
* The so-called QluMan 'save-button interface' was improved and implemented
for the editing of command names in the Command Editor. Now name
labels turn green when changed and black after being saved, improving
transparency.
If you use QluMan singularity images, make sure you download [5] the
latest version.
[1] https://www.qlustar.com/news/qsa-0210201-linux-kernel-vulnerabilities
[2] https://www.qlustar.com/news/qsa-0210202-security-update-bundle
[3] https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/QluMan_G…
[4] https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/QluMan_G…
[5] https://qlustar.com/download
A bug was discovered in the recently uploaded QluMan GUI version 11.0.2.8
that prevents the addition of new hosts. The bug is fixed in the most
recent version 11.0.2.10. Please download the updated QluMan GUI singularity
image 11.0.2 at https://qlustar.com/download that includes the fixed version.
A number of new Qlustar features were completed recently and published
together with the latest security updates. QluMan has the following new
capabilities:
* RXEngine command output is searchable now [1], making the analysis of command
results a lot easier.
* RXEngine Command History management [2] has been improved to allow for
fine-grained control during removal of unwanted entries.
* Cluster logging as displayed in the QluMan Log Viewer [3] has been vastly
enhanced:
+ New message categories have been added for managing chroots,
start/stopping of slurmd and RXEngine executions in general.
+ Messages originating from node reboots have been merged into single
summary entries to hugely reduce the number of messages and better
track cluster state changes.
* The QluMan GUI now checks for version updates when starting up [4].
If you use QluMan singularity images, make sure you download [5] the
latest version.
In addition, we have integrated the latest OpenHPC 1.3.9 release, so a
big pile of updated packages are available for those of you running
CentOS/OpenHPC.
[1] https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/QluMan_G…
[2] https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/QluMan_G…
[3] https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/QluMan_G…
[4] https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/QluMan_G…
[5] https://qlustar.com/download
A large number of new exciting Qlustar features were completed recently
and published as ** Feature Update 10/19 **. Most prominent is RXengine 2.0,
a complete redesign of the QluMan Remote Execution engine. Non-QluMan
related major new stuff includes the move to CentOS 7.7.
Check out all the details at
https://www.qlustar.com/news/qluman-rxengine-20-feature-update-1019