Starting, shutting down, or restarting EGO faster
To increase cluster performance, you can start, shutdown, or restart your cluster faster by specifying commands to run in parallel. On Linux® , use forked processes to implement parallel execution. On Windows, use threads. This parallel execution allows the system to complete start, shutdown, and restart commands faster.
Before you begin
In a Windows cluster, you must be logged on to the host in the cluster as the local system user and have EGO administrative privileges.
- You must log on with
rootpermissions. By default, onlyrootcan start, stop, or restart the cluster. Optionally, grant root privileges toegoadmin, the cluster administrator account. - You must use rsh to remotely start each host in the cluster. Ensure that rsh is available on each host in the cluster.
In a mixed cluster, you must be logged on to the primary host as
root (for Linux
primary hosts) or as the
cluster administrator with root privileges.
About this task
There is no hard limit to the number of commands to run in parallel; however, on Linux, the maximum number of commands is limited by the operating system user limits, and can cause the forking to fail.
If the value for the -n commands option is greater than one, the command automatically applies the -f option to run the action on hosts without validating the configuration file. Parallel execution also suppresses error messages and only reports failed hosts. For details about a failed host, rerun the start, shutdown, or restart command on the host that has failed.