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pcluster dcv fails when username contains dot #7345
Description
https://github.com/aws/aws-parallelcluster-cookbook/blob/develop/cookbooks/aws-parallelcluster-platform/files/dcv/pcluster_dcv_authenticator.py#L136
above line is not allowing usernames with . (dot) in their username to create a dcv session.
dots are usually permitted in AD/LDAP environments- and pcluster claims compatability with AD/LDAP via https://docs.aws.amazon.com/parallelcluster/latest/ug/tutorials_05_multi-user-ad.html
Activity
ezrizhu commentedon Apr 18, 2026
we resolved this in our deployment with
sed -i 's/a-z0-9_-/a-z0-9_.-/g' /home/dcvextauth/pcluster_dcv_authenticator.pythen a/opt/parallelcluster/pyenv/versions/3.14.2/envs/cookbook_virtualenv/bin/supervisorctl restart pcluster_dcv_authenticatoras a bootstrap script hookAllow "." and long usernames in the DCV authenticator
Allow "." and long usernames in the DCV authenticator
Allow "." and long usernames in the DCV authenticator