A stable Proxmox® cluster requires precise Corosync configuration for reliable cluster communication. This guide shows you how to optimally set up your Proxmox® cluster network and correctly configure Corosync. The usual process for system administrators with basic Proxmox® VE knowledge is correctly set up by the automatic installer or in the Proxmox VE frontend, requiring no manual work.

We explicitly advise against working on the configuration without deep knowledge of Corosync’s intricacies and the consequences of custom settings. This should be left to specialists with expertise. However, this overview may be helpful for experimentation and further education. (more…)