Important: MSR 2.9.x reaches End of Life (EOL) on 2026-DEC-01. Mirantis strongly recommends upgrading to the latest supported version to continue receiving updates, fixes, and support.

Networks

MSR creates the dtr-ol network at the time of installation. This network allows for communication between MSR components running on different nodes, for the purpose of MSR data replication.

When installing MSR on a node, make sure the following ports are open on that node:

Port	Direction	Purpose
80/tcp	in	Web app and API client access to MSR.
443/tcp	in	Web app and API client access to MSR.

You can configure these ports during MSR installation.