To test whether the HA is really working, we will disconnect the network connectivity for the node
pm4-1 and observe the Status window for HA changes. The Status window displays the states of resources in real time as they occur. The following screenshot shows the HA status after interrupting the network connectivity:
In the preceding screenshot, we can see that our example node
pm4-1 is no longer connected to the cluster, and HA does not get any acknowledgement from the node. After 60 seconds, Proxmox HA promotes the next available node in the HA group as the master, as shown in the following screenshot:
After Proxmox ...