o2cb_ctl
Section: OCFS2 Manual Pages (8)
Updated: September 2010
Page Index
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
Copyright © 2004, 2010 Oracle. All rights reserved.