o2cb_ctl − Control program for the O2CB cluster service.
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
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.
−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. |
−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. |
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
mkfs.ocfs2(8) fsck.ocfs2(8) tunefs.ocfs2(8) mounted.ocfs2(8) ocfs2console(8) o2cb(7)
Oracle Corporation
Copyright © 2004, 2008 Oracle. All rights reserved.