How to Custom monitoring

I have some services by icinga2 monitor
But I want to achieve more than the existing
please how to custom monitor 。
I wonder if there is such a blog tutorial
tks.!

Hi,

start your journey here.

Cheers,
Michael

1 Like

thankyou michael ,I read this document ,but I still don’t understand

I think I write my shell scripts for monitor

Hi,

which parts are not that clear? Plugin scripts, adding a check command, integrating them as a service apply rule?

Where are you currently at, e.g. with a simple check you’d want to add to your monitoring?

Cheers,
Michael

If I want to monitor the port without using the official script
i write a scritps in /server/scripts
how to define using this script

Hi,

in case of monitoring a port, I’d suggest using the check_tcp plugin provided as part of the monitoring/nagios plugin package. You’ll install that already with following the installation documentation.

And you don’t need to create a CheckCommand configuration object either since this covered within the Icinga Template Library as well - tcp.

object Host "abc" {
  check_command = "hostalive"
  address = "..."
  vars.ports = [ 22, 80, 443 ]
  vars.os = "Linux"
}
// Simple apply
apply Service "tcp 22" {
  check_command = "tcp"
  vars.tcp_port = 22

  assign where host.vars.os == "Linux"
}
// Advanced apply for

apply Service "tcp " for (p in host.vars.ports) {
  check_command = "tcp"

  vars.tcp_port = p
}

References:

Cheers,
Michael

sorry ,Maybe i’m wrong ,It’s not like this
I said production
Need to monitor collections in mongo
If so how can I customize it in icinga

Hi,

I’d appreciate it if you go into more detail, and allow others helping you for the fun and pride to get a better picture of what you’re trying to do. Provide setup examples, listening APIs, etc. from your environment.

Cheers,
Michael

thank you I found here can also customize the monitoring

I want to add script through here
How to define warnings in the script

Do you mean define warning levels or define the script output for display warning state in Icinga2?
Maybe here’s a possible point of start:
https://icinga.com/docs/icinga2/latest/doc/05-service-monitoring/#plugin-api

1 Like

Define script to display warnings

Comparing the result and setting the correct level:

if ( [ “echo "$tps >= $crit_tps" | bc” == “1” ] || [ “echo "$read >= $crit_read" | bc -q” == “1” ] ||
[ “echo "$written >= $crit_written" | bc” == “1” ] ); then
msg=“CRITICAL”
status=2
else if ( [ “echo "$tps >= $warn_tps" | bc” == “1” ] || [ “echo "$read >= $warn_read" | bc” == “1” ] ||
[ “echo "$written >= $warn_written" | bc” == “1” ] ); then
msg=“WARNING”
status=1
else
msg=“OK”
status=0
fi
fi

Bye!

exit $status

Does icinga2 recognize alarms like this?

Should work, but you have to insert echo $msg before exit $status so yo get a readable status message in Icinga.

1 Like

123123

i am test is ok now !!!

But I have a question, is icinga recognized as a number like 0 1

if [ “${result}” = 0 ]
then
msg=“CRITICAL”
status=2
elif [ “${result}” -ge 20 ]
then
msg=“WARNING”
status=1
else
msg=“OK”
status=0
fi

echo “$host $port is $msg”
exit $status

My script is defined like this
$status=0 1 。。。
exit $status Is it necessary

Icinga2 evaluates the return values of the scripts as follows

OK=0
WARNING=1
CRITICAL=2
UNKNOWN=3

The output which is shown in icingaweb2 depends on the output provided by the script, e.g:

...
echo "oh no! something went wrong ..."
exit 2

… would output something like this:
dummy_output

1 Like

thank you all
I understand