Issue with: monit restart [service-name]

[Harlan Barnes]

Hello,

I am trying to setup monit (5.4) to watch my Wowza Media Server.

I can execute the following commands with no problem:

monit start wowza
monit stop wowza

But when I try this:

monit restart wowza

it appears that wowza executes the stop script ... and then without
waiting for it to return from the stop command, it executes the start
command. This produces a race condition where the stop action removes
the pid file that the start action just put down. As such, monit
thinks the start action failed and does the start again. (Which causes
other problems.)

Is that the way it is supposed to work? Is there anything I can do to
force monit to wait for the stop action to return before executing the
start action when I tell it to restart the service?

Thanks,

Harlan

---
My main config looks like this:

# set daemon mode timeout to 1 minute
set daemon 60

# set the state file to
set statefile /var/lib/monit/monit.state

# http support
set httpd port 2812 and use the address localhost
    allow localhost

# Include all files from /etc/monit.d/
include /etc/monit.d/*

My wowza config looks like this:

check process wowza with pidfile /var/run/WowzaMediaServer.pid
    start program = "/etc/init.d/WowzaMediaServer start"
    stop program = "/etc/init.d/WowzaMediaServer stop"
    if failed port 443 then restart
    if failed host localhost port 443 type TCPSSL
        protocol HTTP request "/crossdomain.xml" then restart

Wowza says this on a verbose startup:

Runtime constants:
 Control file       = /etc/monitrc
 Log file           = /var/log/monit
 Pid file           = /var/run/monit.pid
 Id file            = /root/.monit.id
 Debug              = True
 Log                = True
 Use syslog         = False
 Is Daemon          = True
 Use process engine = True
 Poll time          = 60 seconds with start delay 0 seconds
 Expect buffer      = 256 bytes
 Mail from          = (not defined)
 Mail subject       = (not defined)
 Mail message       = (not defined)
 Start monit httpd  = True
 httpd bind address = localhost
 httpd portnumber   = 2812
 httpd signature    = True
 Use ssl encryption = False
 httpd auth. style  = Host/Net allow list

The service list contains the following entries:

Process Name          = wowza
 Pid file             = /var/run/WowzaMediaServer.pid
 Monitoring mode      = active
 Start program        = '/etc/init.d/WowzaMediaServer start' timeout
30 second(s)
 Stop program         = '/etc/init.d/WowzaMediaServer stop' timeout 30 second(s)
 Existence            = if does not exist 1 times within 1 cycle(s)
then restart else if succeeded 1 times within 1 cycle(s) then alert
 Pid                  = if changed 1 times within 1 cycle(s) then alert
 Ppid                 = if changed 1 times within 1 cycle(s) then alert
 Port                 = if failed [localhost:443/crossdomain.xml [HTTP
via TCPSSL] with timeout 5 seconds and retry 0 time(s)] 1 times within
1 cycle(s) then restart else if succeeded 1 times within 1 cycle(s)
then alert
 Port                 = if failed [localhost:443 [DEFAULT via TCP]
with timeout 5 seconds and retry 0 time(s)] 1 times within 1 cycle(s)
then restart else if succeeded 1 times within 1 cycle(s) then alert

System Name           = system_webcam_v5a
 Monitoring mode      = active