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o2cb_ctl - Control program for the O2CB cluster service.

o2cb_ctl(8) OCFS2 Manual Pages 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 Configuration.
 
-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) o2cb(7)
 

AUTHORS

Oracle Corporation
 
Copyright © 2004, 2010 Oracle. All rights reserved.
September 2010 Version 1.8.5