o2cb_ctl(8)
NAME
o2cb_ctl - Control program for the O2CB cluster service.
SYNOPSIS
o2cb_ctl -C -n object -t type [-i] [-a attribute ] o2cb_ctl -D -n object [-u] o2cb_ctl -I [-o-z] -l manager> [-n object>] [-t type] [-a attribute] o2cb_ctl -H [-n object] [-t type>] [-a attribute>] o2cb_ctl -h o2cb_ctl -V
DESCRIPTION
o2cb_ctl is the control program for the O2CB cluster service. Users
are not advised to use this program directly but instead use the O2CB
init service and/or ocfs2console.
OPTIONS
-C Create an object in the OCFS2 Cluster Configuration.
-D Delete an object from the existing OCFS2 Cluster Configuration.
-I Print information about the OCFS2 Cluster Configuration.
- -H Change an object or objects in the existing OCFS2 Cluster Con
- figuration.
- -h Displays help and exit.
- -V Print version and exit.
OTHER OPTIONS
- -a <attribute>
- With -C, <attribute> is in format "parameter=value", where the parameter is a valid parameter that can be set in the file /etc/ocfs2/cluster.conf. With -I, <attribute> may be "parameter", indicating an attribute to be listed in the output, or it may be "parameter==value", indicating that only objects matching "parameter=value" are to be displayed.
- -i Valid only with -C. When creating something (node or cluster),
- it will also install it in the live cluster. If the parameter is not specified, then only update the /etc/ocfs2/cluster.conf.
- -n object
- object is usually the node name or cluster name. In the /etc/ocfs2/cluster.conf file, it would be the value of the name parameter for any of the sections (cluster or node).
- -o Valid only with -I. Using this parameter, if one asks o2cb_ctl
- to list all nodes, it will output it in a format suitable for shell parsing.
- -t type
- type can be cluster, node or heartbeat.
- -u Valid only with -D. When deleting something (node or cluster),
- it will also remove it from the live cluster. If the parameter is not specified, then only update the /etc/ocfs2/cluster.conf.
- -z Valid only with -I. This is the default. If one asks o2cb_ctl to
- list all nodes, it will give a verbose listing.
EXAMPLES
- Add node5 to an offline cluster:
- $ o2cb_ctl -C -n node5 -t node -a number=5
-a ip_address=192.168.0.5 -a ip_port=7777
-a cluster=mycluster - Add node10 to an online cluster:
$ o2cb_ctl -C -i -n node10 -t node -a number=10-a ip_address=192.168.1.10 -a ip_port=7777
-a cluster=mycluster- Note the -i argument.
- Query the IP address of node5:
$ o2cb_ctl -I -n node5 -a ip_address- Change the IP address of node5:
$ o2cb_ctl -H -n node5 -a ip_address=192.168.1.5
SEE ALSO
mkfs.ocfs2(8) fsck.ocfs2(8) tunefs.ocfs2(8) mounted.ocfs2(8) ocfs2console(8) o2cb(7)
AUTHORS
Oracle Corporation
COPYRIGHT
- Copyright (C) 2004, 2009 Oracle. All rights reserved.