Managing Serviceguard Extension for SAP on Linux (IA64 Integrity and x86_64), February 2008

Step-by-Step Cluster Conversion
Linux Configuration
Chapter 3 117
Cluster Node Synchronization
NOTE Repeat the steps in this section for each node of the cluster that is
different than the primary host.
Logon as root to the system where the SAP Central Instance is installed
(primary host) and prepare a logon for each of its backup hosts – if not
already available.
IS070 Installation Step:
Open the groupfile file, /etc/group, on the primary side.
If any of the SAP and Database groups listed here (sapsys, dba, oper ,
sdba) exist on the primary node and they do not exist on the backup
node, copy them from the primary node to the backup node. If any group
exists, verify that it has the same GID on both the primary and backup
nodes. Merge the group members lists.
IS080 Installation Step:
Open the password file, /etc/passwd, on the primary side.
If any of the SAP and database users listed here (<sid>adm, ora<sid>,
sqd<sid>, sdb...) exist on the primary node, recreate them on the backup
node. Assign the users on the backup nodes the same user and group ID
as the primary nodes.