Patroni plugin not working helllp

[gregorym35]

CMK version:
Checkmk Raw Edition 2.2.0p6
OS version:
Error message:

Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins)

I created an adaptation of a plugin for several probes for the patroni postgresql solution, here is an example of the script on my agent:

#!/usr/bin/env python3

import urllib.request
import json

PATRONI_NODE_URL = 'http://X.X.X.X:8008/patroni'

def get_node_patroni_version(url):
    with urllib.request.urlopen(url) as response:
        data = response.read()
    patroni = json.loads(data)
    return patroni.get("patroni", {}).get("version", "unknown")

def main():
    patroni_version = get_node_patroni_version(PATRONI_NODE_URL)
    print("<<<patroni_node_patroni_version>>>")
    print(f"patroni_version={patroni_version}")

if __name__ == '__main__':
    main()

Exit :

<<<patroni_node_patroni_version>>>
patroni_version=3.2.2

So far everything is OK but by doing a rescan on the server, I have nothing displayed in the HMI :-5
Do you have an idea please??

[Dirk]

I don’t know anything about patroni but I know that for the agent output

<<<patroni_node_patroni_version>>>
patroni_version=3.2.2

you would need a check plugin on the server side that recognises the section <<<patroni_node_patroni_version>>> and handles its data.

Do you have such a check plugin installed on your checkmk server?

[dabrain (Andreas Breuer)]

In case you only would like to know the version and display it on checkmk server you might better make use of a local check output. For local checks you don’t have to program the backend stuff at the checkmk server side.

Just place your script at ~/<agent_home>/local ( by default /usr/lib/check_mk_agent/local/ )

    # NOT NEEDED for Local Check - print("<<<patroni_node_patroni_version>>>")
    # Add 0 for OK for local check output
    print(f"0 \"My Patroni Version\" patroni_version {patroni_version}")

Now rediscover the system and you should find the version at checkmk.

More details here:

Local checks

[gregorym35]

THHHHHAAAAAAAAANNNNNNKKKKK you

#!/usr/bin/env python3

import urllib.request
import json

PATRONI_NODE_URL = 'http://X.X.X.X:8008/patroni'

def get_node_patroni_version(url):
    try:
        with urllib.request.urlopen(url) as response:
            data = response.read()
        patroni = json.loads(data)
        version = patroni.get("patroni", {}).get("version", "unknown")
        return version
    except Exception as e:
        print(f"Error: {e}")
        return "unknown"

def main():
    patroni_version = get_node_patroni_version(PATRONI_NODE_URL)
    # Formater la sortie pour Checkmk en précisant que ce n'est pas une métrique mais une information
    print(f'0 "Version Patroni" - Version is {patroni_version}')

if __name__ == '__main__':
    main()

[r.sander (Robert Sander)]

Please, a version number is not a metric. Change the output to

print(f"0 \"My Patroni Version\" - Version is {patroni_version}")

[gregorym35]

Thank you very much to all