How to add a new node in a running Veritas Cluster instance

Steps for adding a new node in a running Veritas Cluster

1) Install the VCS depots on the new node with ‘-installonly’ option

# ./installvcs –installonly

2) Rename the startup scripts on all nodes as a precaution:

# mv /etc/rc2.d/S70llt /etc/rc2.d/s70llt
# mv /etc/rc2.d/S92gab /etc/rc2.d/s92gab
# mv /etc/rc3.d/S99vcs /etc/rc3.d/s99vcs

3) Modify /etc/llthosts, /etc/gabtab, /etc/llttab and /etc/VRTSvcs/conf/config/main.cf as required to show the new node. These modifications should be done on all nodes.

#vi /etc/llthosts

0 ggnqinta1

1 ggnqinta2

2 ggnqinta3

#vi /etc/llttab

Node1
set-node ggnqinta1

set-cluster 13

link lan1 /dev/lan:1 - ether - -

link lan2 /dev/lan:2 - ether - -

Node2

set-node ggnqinta2

set-cluster 13

link lan1 /dev/lan:1 - ether - -

link lan2 /dev/lan:2 - ether - -

Node3

set-node ggnqinta3

set-cluster 13

link lan1 /dev/lan:1 - ether - -

link lan2 /dev/lan:2 - ether - - 

# vi /etc/gabtab

/sbin/gabconfig -c -n 3

Caution : make sure the number of nodes is correctly reflected in the gabtab and 'set-node' is correct in /etc/llttab of each host or you will have problems.

4) Start GAB and LLT on the new node

# /sbin/rc2.d/S70llt start

# /sbin/rc2.d/S92gab start

5) Start the cluster on new node

# hastart

6) Add the new added system into configuration

 # hasys –add ggnqinta3

7) Save the configurtion

# haconf –dump makero

8) Move back the start scripts

# mv /etc/rc2.d/s70llt /etc/rc2.d/S70llt
# mv /etc/rc2.d/s92gab /etc/rc2.d/S92gab
# mv /etc/rc3.d/s99vcs /etc/rc3.d/S99vcs

9) The newly added node needs to be added in servicegroup configuration

# hagrp -modify SG SystemList -add ggnqinta3

# hagrp -modify SG SystemList -add ggnqinta3

# hagrp -modify SG SystemList -add ggnqinta3

# hagrp -modify SG AutoStartList -add ggnqinta3

# hagrp -modify SG AutoStartList -add ggnqinta3

# hagrp -modify SG AutoStartList -add ggnqinta3