Configuring cluster processes on the new node


Configuring cluster processes on the new node
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Perform the steps in the following procedure to configure cluster processes on the new node.

For Red Hat Linux, modify the file /etc/sysctl.conf on the new system to set the shared memory and other parameter required by your application; refer to the your application documentation for details. The value of the shared memory parameter is put to effect when the system restarts.
Do not apply for SUSE Linux.
Edit the /etc/llthosts file on the existing nodes. Using vi or another text editor, add the line for the new node to the file. The file resembles:
```
0 sys1
1 sys2
2 sys5
```
Copy the /etc/llthosts file from one of the existing systems over to the new system. The /etc/llthosts file must be identical on all nodes in the cluster.
Create an /etc/llttab file on the new system. For example:
```
set-node sys5
set-cluster 101
```
```
link eth1 eth-[MACID for eth1] - ether - -
link eth2 eth-[MACID for eth2] - ether - -
```
Except for the first line that refers to the node, the file resembles the /etc/llttab files on the existing nodes. The second line, the cluster ID, must be the same as in the existing nodes.
Use vi or another text editor to create the file /etc/gabtab on the new node. This file must contain a line that resembles the following example:
```
/sbin/gabconfig -c -nN
```
Where N represents the number of systems in the cluster including the new node. For a three-system cluster, N would equal 3.
Edit the /etc/gabtab file on each of the existing systems, changing the content to match the file on the new system.
Use vi or another text editor to create the file /etc/VRTSvcs/conf/sysname on the new node. This file must contain the name of the new node added to the cluster.
For example:
```
sys5
```
Create the Unique Universal Identifier file /etc/vx/.uuids/clusuuid on the new node:
```
# /opt/VRTSvcs/bin/uuidconfig.pl -rsh -clus -copy \
-from_sys sys1 -to_sys sys5
```
Start the LLT, GAB, and ODM drivers on the new node:
For RHEL 7, SLES 12, and supported RHEL distributions:
```
# systemctl start llt
# systemctl start gab
# systemctl restart vxodm
```
For earlier versions of RHEL, SLES and supported RHEL distributions:
```
# /etc/init.d/llt start
```
```
# /etc/init.d/gab start
```
```
# /etc/init.d/vxodm restart
```

On the new node, verify that the GAB port memberships:

# gabconfig -a
GAB Port Memberships
===============================================================
Port a gen df204 membership 012

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