Hello, regarding the suggested check of the linstor cluster's health: I am pretty sure the cluster is healthy, the "missing" ip is most likely just greyed out from the screenshots manually (otherwise why should there be spaces before the ":port" and also "root@ :path"?)
Which also leads us to the core issue: In order to DRBD being supported by linstor, the linstor node-names must match the actual host names (uname -n). As I assume that your machines are not named "first", "second" and "third" (otherwise you would not had to grey out the "--controllers ______ " in your "n l" command), linstor reports that this UNAME-check failed which is required for DRBD-support. I will put this to my todo-list to report a reason why a layer is not supported (i.e. in your case you would see something like "Satellite '....' does not support the following layers: [DRBD]. Failed checks: [UNAME]" or something like that), although with quite low priority, so don't expect this to be ready by tomorrow :) Best regards, Gabor
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