Docker by Zabbix agent 2 - Get data_usage problem

[element]

Hi,

I am monitoring few servers with docker agen2 template and Pi servers I monitor gives me this error. Cannot fetch data: Get "http://1.28/system/df": context deadline exceeded (Client.Timeout exceeded while awaiting headers).

This only happens on Get data_usage other components are working and monitoring... I really struggle with this for a few days, I have set up all permission as documented, added zabbix to docker group, changed permission to /var/run/docker.sock ...

I also have one VPS and Get data_usage and other components works fine with same configuration...

Any ideas?

[element]

I would really appreciate the help, because I struggle with this for a few days now :/

[bfsaikali]

Exactly the same error here. Just Get data_usage with this message.

[gugreeman]

As the error indicates there is a timeout. The default timeout is 3 seconds so you may need to extend that in zabbix-agent2.conf. You can run 'time docker system df' to get an idea how long the timeout should be. It can also help to reduce docker's disk usage with 'docker system prune' so the 'df' can complete faster.