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Check a Process with a script


From: Holder, Shane
Subject: Check a Process with a script
Date: Thu, 24 Mar 2016 13:55:06 +0000

Hello,

 

I am trying to check a process that sends arbitrary data on the socket.  The existing send/expect does not appear to be meeting my needs as the output from the program I am attempting to check is not consistent.

 

I am using the following monit script:

                check process progname with pidfile /var/run/progname.pid

                                start program = “/etc/init.d/prog start” with timeout 60 seconds

                                stop program = “/etc/init.d/prog stop”

                                if failed port <n> send “command\r\n” expect “command ACK” with timeout 60 seconds retry 5 then restart

 

the program is a service which listens on a port and accepts commands.  It is possible that when connecting to the port that there is some arbitrary data in the buffer which is sent on connection to the socket.  It is also possible that while connected data will be sent that is not related.  The following shell command succeeds where monit is not.

 

(echo “command”; sleep 5) | nc localhost <port> | grep “command ACK”

 

This allows me to ignore any arbitrary data coming from the port and look only for my expected output.

 

I want to add something like.

                                If failed <run some program here> status  != 0 then restart

 

Is something like this possible in monit 5.16 gramar?

                               

 

Shane Holder 

AmerisourceBergen

Solutions Architect

Enterprise Architecture

 

3101 Gaylord Parkway 2W-C120 

Frisco, TX 75034

 

Work: 469.365.7727

 

http://absg.com

 

 


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