File: http://svn.grimore.org/configuration-templates/monit/debian/templates/squid -

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##  Copyright (C) Wizardry and Steamworks 2017 - License: GNU GPLv3      ##
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# The following configuration is assumed:
#  * proxy is the effective username running squid.
#  * 192.168.1.1 is the IP that squid is listening to.
#  * 3128 is the port that squid is listening on.
 
check process squid with pidfile /var/run/squid.pid
    group proxy
    depends on squid_bin
    depends on squid_rc
    start program = "/etc/init.d/squid start"
    stop  program = "/etc/init.d/squid stop"
    if failed host proxy.internal port 8123  then restart
    # if 5 restarts within 5 cycles then timeout
 
 
check file squid_bin with path /usr/sbin/squid
    group proxy
    if failed checksum then alert
    if failed permission 755 then alert
    if failed uid root then alert
    if failed gid root then alert
 
check file squid_rc with path /etc/init.d/squid
    group proxy
    if failed checksum then alert
    if failed permission 755 then alert
    if failed uid root then alert
    if failed gid root then alert