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5
Freeze the service groups.
# hagrp -freeze group -persistent
Repeat this command for each service group in step 4.
6
Make the configuration read-only.
# haconf -dump -makero
7
Stop VCS on Node A.
# hastop -local -force
8
Edit the VCS system configuration file /etc/sysconfig/vcs, and remove the
"-onenode" option.
Change the line:
ONENODE=yes
To:
ONENODE=no
9
Rename 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
VCSuses theLow LatencyTransport(LLT) protocolfor allcluster communications
as a high-performance, low-latency replacement for the IP stack. LLT has two
major functions.
Installing VCS on a single node
Adding a node to a single-node cluster
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