Release AWS ParallelCluster v2.6.1 · aws/aws-parallelcluster-cookbook

We're excited to announce the release of AWS ParallelCluster 2.6.1.

How to upgrade?

sudo pip install --upgrade aws-parallelcluster

Change ProctrackType from proctrack/gpid to proctrack/cgroup in slurm.conf in order to better handle termination of
stray processes when running MPI applications. This also includes the creation of a cgroup Slurm configuration in
in order to enable the cgroup plugin.
Skip execution, at node bootstrap time, of all those install recipes that are already applied at AMI creation time.
The old behaviour can be restored setting the property "skip_install_recipes" to "no" through extra_json. The old
behaviour is required in case a custom_node_package is specified and could be needed in case custom_cookbook is used
(depending or not if the custom cookbook contains changes into any *_install recipes)
Start CloudWatch agent earlier in the node bootstrapping phase so that cookbook execution failures are correctly
uploaded and are available for troubleshooting.

FSx Lustre: remove x-systemd.requires=lnet.service from mount options in order to rely on default lnet setup
provided by Lustre.
Enforce Packer version to be >= 1.4.0 when building an AMI. This is also required for customers using pcluster createami command.
Remove /tmp/proxy.sh file. Proxy configuration is now written into /etc/profile.d/proxy.sh
Omit cfn-init-cmd and cfn-wire from the files stored in CloudWatch logs.

Fix installation of Intel Parallel Studio XE Runtime that requires yum4 since version 2019.5.
Fix compilation of Torque scheduler on Ubuntu 18.04.

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