cmhaltnode(1m)cmhaltnode(1m)NAMEcmhaltnode - halt a node in a high availability cluster
SYNOPSIScmhaltnode [-f] [-v] [-t] [node_name...]
DESCRIPTIONcmhaltnode causes a node to halt its cluster daemon and remove itself
from the existing cluster.
To halt cluster on the node, a user must either be superuser(UID=0), or
have an access policy of FULL_ADMIN allowed in the cluster configura‐
tion file. See access policy in cmquerycl.
When cmhaltnode is run on a node, the cluster daemon is halted and,
optionally, all packages that were running on that node are moved to
other nodes if possible.
If node_name is not specified, the cluster daemon running on the local
node will be halted and removed from the existing cluster.
If you issue this command while a cluster is still in the process of
forming, the command will fail with the message "Unable to connect to
daemon." If this happens, wait for the cluster to form successfully,
then issue the command again.
cmhaltnode supports the following options:
-f Force the node to halt even if there are packages or
group members running on it. The group members on the
node will be terminated. The halt scripts for all
packages running on the node will be run; based on
priority or dependency relationships, this may affect
packages on other nodes. In other words, packages on
other nodes may either start or halt based on this
package halting. If the package configuration and
current cluster membership permit, and if the package
halt script succeeds, the packages will be started on
other nodes. Without this option, if packages are
running on the given node, the command will fail. If
a package fails to halt, the node halt will also fail.
-v Verbose output will be displayed.
-t Test only. Provide an assessment of the package place‐
ment without affecting the current state of the nodes
or packages. This option validates the node's eligi‐
bility with respect to the package dependencies as
well as the external dependencies such as EMS
resources, package subnets, and storage before pre‐
dicting any package placement decisions. If there is a
package in maintenance mode running on the nodes being
halted, the package will always be halted and not
failover to another node; the report will not display
an assessment for that package.
The name of the node(s) to halt.
RETURN VALUEcmhaltnode returns the following value:
0 Successful completion.
1 Command failed.
Halt the cluster daemon on two other nodes:
cmhaltnode node2 node3
AUTHORcmhaltnode was developed by HP.
SEE ALSOcmquerycl(1m), cmhaltcl(1m), cmruncl(1m), cmrunnode(1m), cmviewcl(1m),
Requires Optional Serviceguard Software cmhaltnode(1m)