aws/aws-parallelcluster v3.16.2

AWS ParallelCluster v3.16.2

on GitHub

We're excited to announce the release of AWS ParallelCluster 3.16.2

Upgrade

How to upgrade?

sudo pip install --upgrade aws-parallelcluster

ENHANCEMENTS

• Improve export-logs: speed up by downloading logs in parallel, add progress reporting, support running on deleted clusters.
• Add a pcluster-diag check that verifies the sudoers definitions ParallelCluster relies on.

CHANGES

• Add support for Python 3.14 in the pcluster CLI.
• Upgrade the Python runtime of ParallelCluster Lambda functions to Python 3.14 (from 3.12).
• Increase the default root volume size to 50 GB (from 45 GB).
• Log the systemctl status output and the last journal entries of any system service that fails to start during
  node bootstrap or cluster update to /var/log/chef-client.log, so that the cause of the failure is available in CloudWatch Logs.
• Upgrade the Python version used by the virtual environments baked into the AMIs to 3.14.8 (from 3.14.6).
• Ship only AWS CLI v2 in ParallelCluster AMIs. AWS CLI v1 is no longer installed in the cookbook Python virtual environment.
• Remove execution permissions from the configuration files /opt/parallelcluster/shared/computefleet-status.json,
  /opt/parallelcluster/scripts/clusterstatusmgtd_logging.conf and /etc/dcv/dcv.conf.
• Log the content of the Slurm configuration files generated on the head node, to simplify troubleshooting.

BUG FIXES

• Fix build-image failing in proxied environments when UpdateOs is enabled.
• Fix ExistingFsxNetworkingValidator failing with a generic NoneType error when a file system does not return
  network interfaces. The validator now fails with a clear error message.
• Fix IAM role and policy naming collisions by using a longer suffix derived from the stack ID (24 characters, from 8).
• Fix describe-cluster reporting incomplete events when the stack has a large event history.
• Fix cluster update failing with mount target already exists in this AZ when multiple subnets are in the same AZ.
• Fix cluster update replacing the managed FSx for Lustre file system, when all the queues are replaced with new ones on a different subnet.
• Fix login nodes failing to mount the EFS file system managed by ParallelCluster when they are in an AZ not used by
  the head node or compute nodes. ParallelCluster now creates an EFS mount target in that AZ.
• Fix cluster update hanging when a shared storage is unresponsive, caused by the fuser probe run before each unmount.
• Fix the permissions of ParallelCluster-managed files under /etc/sudoers.d/ by setting mode 0440 on all of them.
• Fix EC2 throttling during compute node launch not being retried and being reported as insufficient capacity
  when using multiple instance types or multiple subnets.
• Fix ParallelCluster treating key=value text in the Comment and Extra fields of Slurm nodes and reservations
  as actual properties.

DEPRECATIONS

• This is the last ParallelCluster release that supports Ubuntu 22.04.