Re: monit not catching failed ping test

[address@hidden]

Hello,

monit checks the service in intervals given by the "set daemon <x>" settings. If the interval between checks is long or the check is blocked by some service timeout/action, then the interval can be longer.

Please can you check the "set daemon" settings and run monit in debug mode?:

1.) stop monit

2.) monit -vI

Best regards,

Martin

On 8 Mar 2019, at 16:49, Fant, Andrew (NIH/NIDA) [E] <address@hidden> wrote:

Good morning.

     I have a small monitoring setup with m/monit 3.7.2, using monit 5.25.2 as the agent.   There are a couple of systems that I cannot install monit on that I still need to be aware of any downtime, so I have added them as ping checks in the monitrc on the host where I installed m/monit.  Yesterday, one of those remote systems went down, but monit and m/monit didn’t report an alert for it and still have its status as OK.  Using anonymized information,  the entry in the monitrc on host1 is:

 

CHECK HOST host2_ping with ADDRESS 192.168.1.2

        IF FAILED ping THEN ALERT

 

And from the command line on host1:

 

host1% monit status host2_ping

Monit 5.25.2 uptime: 48d 19h 8m

 

Remote Host 'host2_ping'

  status                       OK

  monitoring status            Monitored

  monitoring mode              active

  on reboot                    start

  ping response time           -

  data collected               Fri, 08 Mar 2019 10:41:33

 

But:

 

host1% ping host2

PING host2.example.org (192.168.1.2) 56(84) bytes of data.

From host1.example.org (192.168.1.1) icmp_seq=1 Destination Host Unreachable

From host1.example.org (192.168.1.1) icmp_seq=2 Destination Host Unreachable

From host1.example.org (192.168.1.1) icmp_seq=3 Destination Host Unreachable

 

Clearly there is a disconnect between the OS-provided ping utility and what monit is seeing.   I’m sure that it’s probably a simple error in configuration, but I am not seeing what I did wrong.   Can someone please set me on the correct path?

 

Thank you

 

--                                        

Andrew Fant                      |            Systems Administrator

address@hidden       |      Lei Shi Lab , NIH/NIDA/IRP

(443)740-2849                   |

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