Man page - o2cb_ctl(8)

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Manual

o2cb_ctl

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
OTHER OPTIONS
EXAMPLES
SEE ALSO
AUTHORS
COPYRIGHT

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

AUTHORS

Oracle Corporation