You must meet the following conditions to use the uninstallvcs program to uninstall VCS on all nodes in the cluster at one time:
Make sure that the communication exists between systems. By default, the uninstaller uses ssh.
Make sure you can execute ssh or remsh commands as superuser on all nodes in the cluster.
Make sure that the ssh or remsh is configured to operate without requests for passwords or passphrases.
If you cannot meet the prerequisites, then you must run the uninstallvcs program on each node in the cluster.
The example demonstrates how to uninstall VCS using the uninstallvcs program. The uninstallvcs program uninstalls VCS on two nodes: galaxy nebula. The example procedure uninstalls VCS from all nodes in the cluster.