Simple monit script for mongodb

mongodb

check host mongodb with address localhost
    start program = "/usr/bin/sudo /opt/database/mongo/bin/mongod"
    stop program = "/usr/bin/sudo /usr/bin/pkill -f mongod"
    if failed port 28017 protocol HTTP
        request /
        with timeout 10 seconds
        then start

Very tricky way :) Thanks a lot for the inspiration! I'm going to use it for my Monit.

And this is my Monit config for MongoDB on Ubuntu box (it should work for Debian too):

check process mongodb with pidfile /db/path/mongod.lock
   group database
   start program = "/etc/init.d/mongodb start"
   stop  program = "/etc/init.d/mongodb stop"
   if failed host 127.0.0.1 port 28017 protocol http
     and request "/" with timeout 10 seconds then restart
   if 5 restarts within 5 cycles then timeout

The biggest difference is that I used also MongoDB PID file. I'm sharing it, because I hope it can be useful for other people as well.

I cant get this above script working on Ubuntu VPS. My mongodb has been changed to start/stop as service and not as /etc/init.d - is there a way to fix this ?

Sorry, but I'm not too experienced with Ubuntu Upstart, so probably I can't help you a lot...

I guess you can use something like below for starting/stopping your MongoDB:

start program = "/sbin/start mongodb"
stop  program = "/sbin/stop mongodb"

But I don't have an idea about MongoDB PID file in your scenario...

I tried ptecza's way on my CentOS system but Monit claims Mongo is not running (even though it does). I'm shooting in the dark that Monit cannot check contents of /var/lib/mongo/mongo.lock because the file is executable by Mongo. Any ideas?

So after poking about I just added 3 lines to the start part of the MongoDB's init script:

sleep 5
cp $DBPATH/mongo.lock /var/run/mongo.pid
chmod -x /var/run/mongod.pid

Then pointed Monit at the new PID file. Also added line to remove the PID file when Mongo is stopped.

Does this work even if the MongoDB requires authentication ?

I have problem. I try to use this config for monitoring my mongo service. But my mongo server has authentication and monit is failed. I've tried to use next variant:
if failed url http://admin:password123@mongo.server.com:28017/ for 1 cycles then alert
But it didn't work.
Do You have any ideas for fix it?

Check port 27017 ; ) Ex.: if failed host x.x.x.x port 27017

Centos 7 - mongod monit check snippit.

check process mongodb with pidfile /var/lib/mongo/mongod.lock
group database
start program = "/bin/systemctl start mongod"
stop program = "/bin/systemctl stop mongod"
if failed host 127.0.0.1 port 28017 protocol http
and request "/" with timeout 10 seconds then restart
if 5 restarts within 5 cycles then timeout

My mongodb has been authenticated and monit is giving "failed to connect" error.
I am using following config,

check process mongodb matching "mongodb"
start program = "/usr/bin/sudo /bin/systemctl start mongodb"
stop program = "/usr/bin/sudo /bin/systemctl stop mongodb"
if failed url http://username:password@127.0.0.1:27017/authDb with timeout 10 seconds then restart
if 5 restarts within 5 cycles then timeout

@dzamosenchuk @virajp , Did any of you find any solution, Please let me know I am having same kind of issue.

I succesfully configured my monit and it works fine.I think it will help someone.

check process mongodb with pidfile /var/lib/mongodb/mongod.lock

group database

start program = "/bin/systemctl start mongodb"
stop program = "/bin/systemctl stop mongodb"

if failed host localhost port 27017 then restart

I cannot get the most basic script working on this on ubuntu 16.04 monit 5.16

check process mongod with pidfile /var/run/mongod.pid
  group database
  start program = "/usr/sbin/service mongod start"
  stop program = "/usr/sbin/service mongod stop"
  if failed host 127.0.0.1 port 27017 protocol http
    and request "/" with timeout 15 seconds then restart

I get the error: Error reading pid from file '/var/run/mongod.pid'

but when I run cat /var/run/mongod.pid I do get the value 51455

I've changed permissions making it both less and more restrictive to no avail. Thoughts?