I upgrade my cluster Graylog 2.4.6 to 2.5.1 and since I have one error on the first server upgrade :
WARN [ProxiedResource] Unable to call http://192.168.253.42:12900/system/metrics/multiple on node <583172bd-ac88-4d18-8e7d-3374caaf4812>, result: Bad Request
I have this error on SRV-GRAYLOG01.
For the moment I just upgrade SRV-GRAYLOG02 to 2.5.1. Is it normal ? Can I upgrade all server to 2.5.1 for to resolv my proble ?