geerlingguy/ansible-role-elasticsearch

Add initial_master_nodes

in0rdr opened this issue · 4 comments

in0rdr commented

Elasticsearch 7.x comes with new parameters for discovery of cluster nodes:
https://www.elastic.co/guide/en/elasticsearch/reference/current/discovery-settings.html

If network.host: 0.0.0.0 is set, Elasticsearch will not start without setting initial_master_nodes as well:

#/etc/elasticsearch/elasticsearch.yml
cluster.initial_master_nodes:
  - "elastic0"

If this is not the case, Elasticsearch will fail to start with the following message:

[2019-07-03T14:23:13,130][ERROR][o.e.b.Bootstrap          ] [elastic0] node validation exception
[1] bootstrap checks failed
[1]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured

I did not check on the other parameters, seed_hosts or seed_providers. Probably they could be implemented in the same "task". However, a single-node Elasticsearch bootstraps fine by defining initial_master_nodes only.

in0rdr commented

This could be resolved with #38 as well, because it concerns "append only" arguments for newer versions of Elasticsearch

dale-c-anderson commented

@in0rdr , agreed - #38 was a great suggestion. Simple and effective.

Pull request has been submitted #54

stale commented

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stale commented

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