Avaya S8700 Maintenance Manual page 64

Initialization and Recovery
5. Watchdog — The Watchdog process (started by the "rc" script) reads its
configuration file to determine operating parameters and applications to
start up. Some of these applications include (in start-up order):
a. Log Manager
b. License Server
c. Global Maintenance Manager (GMM)
d. Arbiter
e. DupMgr
f. MultiVantage
These applications come up and start heartbeats to the Watchdog.
The Watchdog also starts up a script to monitor Linux services. It also
starts up threads to communicate with a Hardware-Sanity device.
6. Hardware-Sanity — The Watchdog periodically tells the Hardware-Sanity
device how long to wait before rebooting the system. If the
Hardware-Sanity driver doesn't receive an update within that interval, then
the HW Watchdog's timer resets the processor.
7. Arbiter — The Arbiter decides whether the server goes active or standby.
Active Server's Initialization
These steps are executed on the active server.
1. Avaya MultiVantage — The Watchdog process creates the MultiVantage
application, by starting up the Process Manager (prc_mgr). In turn, this
process starts up the MultiVantage processes by:
Certain other MultiVantage processes (i.e., "initmap" and "hmm") create
many other "permanent" MultiVantage processes.
The Process Manager also:
3-2 Issue 1 May 2002
NOTE:
The Bash command, statapp, can be used to view the status of
these applications.
Reading the Process Table file ( /opt/defty/bin/Proc_tab.z )
Creating every process with the PM_INIT attribute
Verifies that MultiVantage is authorized to run on this server.
Maintains a heartbeat to the Watchdog.
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