4.4.1 To Start and Stop Services in an HA Environment
While Messaging Server is running under HA control, you cannot use the normal Messaging Server start, restart, and stop commands to control individual Messaging Server services. If you attempt a stop-msg in an HA deployment, the system warns that it has detected an HA setup and will tell you how to properly stop the system.
The appropriate start, stop and restart commands are shown in the tables below. Note that there are no specific HA commands to individually start, restart, or stop other Messaging Server services (for example, SMTP). However, you can run a stop-msg service command to stop/restart individual servers such as imap, pop or sched.
Sun Cluster’s finest granularity is that of an individual resource. Since Messaging Server is known to Sun Cluster as a resource, scswitch commands affect all Messaging Server services as a whole.
Table 4–2 Start, Stop, Restart in a Sun Cluster 3.0/3.1 Environment|
Action |
Individual Resource |
Entire Resource Group |
|
|---|---|---|---|
|
Start |
scswitch -e -j resource |
sscswitch -Z -g resource_group |
|
|
Restart |
|
scswitch -R -g resource_group |
|
|
Stop |
scswitch -n -j resource |
scswitch -F -g resource_group |
Table 4–3 Start, Stop, Restart in Veritas 3.5, 4.0, 4.1 and 5.0 Environments
|
Action |
Individual Resource |
Entire Resource Group |
||
|---|---|---|---|---|
|
Start |
hares -online resource -sys system |
hagrp -online group -sys system |
||
|
Restart |
|
|
||
|
Stop |
hares -offline resource -sys system |
hagrp -offline group -sys system |
- © 2010, Oracle Corporation and/or its affiliates