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57Adding and removing a node
Removing a node from a cluster
# haconf —dump -makero
9 Put the CVM resources back online, in the following order:
# hagrp -online cvm -sys system01
# hagrp -online cvm -sys system02
# hagrp -online cvm -sys system03
10 Check the system status to see whether the new node is online:
# hastatus —sum
-- SYSTEM STATE
-- System State Frozen
A system01 RUNNING 0
A system02 RUNNING 0
A system03 RUNNING 0
-- GROUP STATE
-- Group System Probed AutoDisabled State
B cvm system01 Y N ONLINE
B cvm system02 Y N ONLINE
B cvm system03 Y N ONLINE
11 Add shared disk groups to the cluster configuration:
# cfsdgadm add cfsdg system03=sw
12 Create a /mnt on system03 and run the following commands:
# cfsmntadm modify /mnt add system03=rw
Refer to cfsmntadm man page for more details.
13 Use
cfsmount command to cluster mount /mnt back on all the nodes:
# cfsmount /mnt
Removing a node from a cluster
This section describes how to remove a node from a cluster. As in previous
examples, the following removes the system system03 from a three-node
cluster. The procedure can be done from any node remaining in the cluster or
from a remote host.
To remove a node from a cluster
1 Log in as superuser on a node other than system03.
2 Stop all the cluster components:
# cfscluster stop -f system03
3 Open the VCS configuration for writing:
# haconf -makerw