Symantec 5 manual Configuring LLT, Freeze the service groups, Stop VCS on Node a

146Installing VCS on a single node

Adding a node to a single-node cluster

5Freeze the service groups.

# hagrp -freeze group -persistent

Repeat this command for each service group in step 4.

6Make the configuration read-only.

# haconf -dump -makero

7Stop VCS on Node A.

# hastop -local -force

8Edit the VCS system configuration file /etc/sysconfig/vcs, and remove the "-onenode" option.

Change the line:

ONENODE=yes

To:

ONENODE=no

9Rename the GAB and LLT startup files so they can be used.

#mv /etc/init.d/gab.old /etc/init.d/gab

#mv /etc/init.d/llt.old /etc/init.d/llt

Installing the VCS software manually when adding a node to a single node cluster

Install the VCS 5.0 RU3 RPMs manually and install the license key.

Refer to the following sections:

■See “Preparing for a manual installation when adding a node” on page 123.

■See “Installing VCS RPMs for a manual installation” on page 124.

■See “Adding a license key” on page 125.

Configuring LLT

VCS uses the Low Latency Transport (LLT) protocol for all cluster communications as a high-performance, low-latency replacement for the IP stack. LLT has two major functions.