Qlustar Feature Update 07/21

A number of new Qlustar features were completed recently and published together with the latest security updates.

QluMan 12.0.3.1 has the following new capabilities:

Pre-systemd node customization has been introduced via a new config class. Files and scripts placed in a particular path may be transferred to the booting node, and scripts being subsequently executed. This is a powerful and flexible new dynamic node customization feature.
Active Directory user import into the Qlustar LDAP server is now possible via the GUI. This allows for an AD integration without compromising HPC features also on large clusters.
QluMan monitoring 1.0: This is the first milestone of the upcoming new Qlustar monitoring architecture eventually replacing Nagios. It implements a filesystem-based check/trigger mechanism controlled by QluMan execd. First usage example: Start slurmd only once checks are successful and drain/undrain if they fail/recover later.
Support for DHCP-less boot (see below).
Support for routed networks as primary boot networks and in NetworkFSMounts was added.

Other new features:

Update from CentOS 8.3 to 8.4 with integration of OpenHPC 2.3.
DHCP-less boot: DHCP is now only used during the initial BIOS/UEFI/PXE stage. All necessary node configuration data previously provided by DHCP is now provided via QluMan in the pre-systemd boot phase.
To control user access by ssh on slurm nodes, a new UNIX group node-ssh was introduced. Members of this group are always allowed to ssh into a node, even without slurm job.
A new image module virtualGL was added for experimental usage. Using it in a node image, Qlustar can provide 3D remote visualization on nodes with the required hardware.