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(3.7.0‐3.12.0) Cluster creation failure on custom Ubuntu AMIs shipping OpenSSH 9.7 , caused by unsupported DSA keys

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Himani Anil Deshpande edited this page Feb 10, 2025 · 2 revisions

The issue

We have discovered an issue that causes cluster creation failure when an Ubuntu AMI with OpenSSH 9.7+ is used on the head node and login nodes are configured with the cluster. If your cluster is affected, cluster creation would fail with the following error message in the head node’s chef-client.log:

---- Begin output of bash /opt/parallelcluster/shared_login_nodes/scripts/keys-manager.sh --create --folder-path /opt/parallelcluster/shared_login_nodes ----  
STDOUT: [INFO] Creating host keys  
STDERR: unknown key type dsa  
---- End output of bash /opt/parallelcluster/shared_login_nodes/scripts/keys-manager.sh --create --folder-path /opt/parallelcluster/shared_login_nodes ----  
Ran bash /opt/parallelcluster/shared_login_nodes/scripts/keys-manager.sh --create --folder-path /opt/parallelcluster/shared_login_nodes returned 255"
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