What is Proxmox Cluster?

The Proxmox VE cluster manager (pvecm) is a tool to create a group of physical servers. Such a group is called a cluster. Proxmox allows creating a cluster with n-number of nodes. Grouping nodes into a cluster offers the following advantages:

  • Centralized, web-based management

  • Multi-master clusters: each node can do all management tasks

  • Use of pmxcfs, a database-driven file system, for storing configuration files, replicated in real-time on all nodes using corosync

  • Easy migration of virtual machines and containers between physical hosts

  • Fast deployment

  • Cluster-wide services like firewall and HA

Why Monitor Proxmox Cluster?

If the cluster is suddenly rendered inaccessible, then dependent applications will be denied access to the clustered resources, which in turn will result in serious degradations in application performance. Likewise, if the storage managed by the cluster are available/shared and are not sized right, then VMs mapped to these storage resources will experience severe performance deficiencies. To avoid this, the availability of the cluster and the resource usage of the nodes should be continuously tracked and administrators proactively alerted to abnormalities. For this purpose, eG Enterprise provides a specialized monitoring model for the Proxmox Cluster.