Rodney

Raised ticket 5085 for this issue.

Futher info - I've tried webmin running on both OpenSuSE Tumbleweed (upgraded from 1.850) and Debian Jessie (both upgraded from 1.850 and a fresh install of 1.870) with the same result. Removing existing servers from the cluster also fails. It seems that no changes to cluster membership are possible, and nothing is logged in the debug logs for the Cluster Webmin Servers module to suggest why.

Cannot add cluster servers under 1.870

I've just upgraded from 1.850 to 1.870 and have hit the same problem. Existing clustered servers show up, and new servers are found when scanned for (and appear in the drop-down list), but the Add Server button does nothing.