GROUPD(8)
NAME
groupd - compatibility daemon for fenced, dlm_controld and gfs_controld
SYNOPSIS
groupd [OPTIONS]
DESCRIPTION
The groupd daemon and libgroup library are used by the fenced, dlm_controld and gfs_controld daemons when they are operating in cluster2-compatible mode to perform a rolling cluster upgrade from cluster2 to
cluster3.
See cman(5) for more information on the upgrading configuration option
needed to perform a rolling upgrade.
- When the upgrading option is enabled, cman adds the following to the
online configuration:
- <group groupd_compat="1"/>
- This setting causes the cman init script to start the groupd daemon, and causes the groupd, fenced, dlm_controld and gfs_controld daemons to operate in the old cluster2 mode so they will be compatible with cluster2 nodes in the cluster that have not yet been upgraded.
- The upgrading setting, including the groupd_compat setting, cannot be changed in a running cluster. The entire cluster must be taken offline to change these because the new cluster3 default modes are not compatible with the old cluster2 modes. The upgrading/compat settings cause the new cluster3 daemons to run the old cluster2 code and protocols.
OPTIONS
Command line options override a corresponding setting in cluster.conf.
-D Enable debugging to stderr and don't fork.
-L Enable debugging to log file.
-g num groupd compatibility mode, 0 off, 1 on. Default 0.
-h Print a help message describing available options, then exit.
-V Print program version information, then exit.