Can't start single 7.x node bound to (RC1) [solved]

I’m trying do do some testing using 7.0.0-35.0.0-rc1 on a single node, but it’s not bound to localhost so the ES bootstrap config doesn’t apply and I’m running into problems with zen2 discovery.

[2019-05-06T17:31:53,837][WARN ][o.e.c.c.ClusterFormationFailureHelper] [test-node] master not discovered yet, this node has not previously joined a bootstrapped (v7+) cluster, and this node must discover master-eligible nodes [test-node] to bootstrap a cluster: have discovered []; discovery will continue using [,,,, [::1]:9300, [::1]:9301, [::1]:9302, [::1]:9303, [::1]:9304] from hosts providers and [{test-node}{XSPOtnhMSaG633-Z61zfqw}{8nQYTLo3QuWL_tvkpXU4vA}{}{}{ml.machine_memory=8371200000, xpack.installed=true, ml.max_open_jobs=20}] from last-known cluster state; node term 0, last-accepted version 0 in term 0

Normally I’d think this is just me not understanding zen2 properly, but if I remove Searchguard I can get the node to start. Replacing Searchguard and restarting the node causes the same issue again.

Am I still missing something with zen2, or is there some kind of startup race condition here with Searchguard?

Can you share your elasticsearch.yml?

The following configs works for me smoketestnode
cluster.initial_master_nodes: smoketestnode

I’m still not entirely sure what I did wrong, as I went through a lot of zen2 config variations before posting here, but adapting your example above gets the node started up just fine.

I tried with cluster.initial_master_nodes, but obviously something else in the config was upsetting it as it didn’t recognise itself as a master. I unfortunately can’t point out what the issue was after that amount of config thrash.

Thanks for the help, even though it was unrelated to Searchguard!

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