I'm new to Munin, I followed the tutorial on digital ocean to install munin master on a debian, and then a munin-node on another server also under debian 8.9. Munin master is working perfectly, from master I nmaped the munin node server on the 4949 port, there is a response, so I think it's not a network or firewall problem. With the command
systemctl status munin-node
The output says it is up. But still I have no link on the web interface of munin master to munin node. This is the output of the munin master (munin-update.log)
2018/01/13 10:05:11 [INFO] Reaping Munin::Master::UpdateWorker<MuninNode;MuninNode>. Exit value/signal: 18/0 2018/01/13 10:05:13 [ERROR] In RRD: Error updating /var/lib/munin/MuninMaster/MuninMaster-http_loadtime-loadtime-g.rrd: /var/lib/munin/MuninMaster/MuninMaster-http_loadtime-loadtime-g.rrd: found extra data on update argument: 2018/01/13 10:05:13 [INFO]: Munin-update finished for node MuninMaster;MuninMaster (11.67 sec) 2018/01/13 10:05:23 [INFO] Remaining workers: MuninNode;MuninNode 2018/01/13 10:05:23 [INFO] Reaping Munin::Master::UpdateWorker<MuninMaster;MuninMaster>. Exit value/signal: 0/0 2018/01/13 10:05:23 [INFO] No old data available for failed worker MuninNode;MuninNode. This node will disappear from the html web page hierarchy 2018/01/13 10:05:23 [INFO]: Munin-update finished (21.85 sec)
How can I check if munin node is sending data to munin master?
Also I noticed there is a MuninMaster (it's the name I gave to the master) folder under /var/lib/munin, but no such thing as MuninNode (the name I gave to munin node in the munin.conf file) Thank you for your help