Imds properties for login nodes - AWS ParallelCluster

Access to the login node's IMDS (and the instance profile credentials) is restricted to root user, cluster administrative user (pc-cluster-admin by default) and operating system specific default user (ec2-user on Amazon Linux 2, Amazon Linux 2023 and Red Hat, and ubuntu on Ubuntu 22.04 and Ubuntu 24.04)

To restrict IMDS access, AWS ParallelCluster manages a chain of iptables.

Note

Any customization of iptables or ip6tables rules can interfere with the mechanism used to restrict IMDS access on the login node.See also Imds property setting.

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Document Conventions

Storage for login nodes