Node Validation Exception Bootstrap Checks Failed

[Bidhan_Bastola]

 [2019-08-20T17:28:28,212][INFO ][o.e.p.PluginsService     ] [k8s-master.citytech.global] loaded    module [x-pack-security]
 [2019-08-20T17:28:28,212][INFO ][o.e.p.PluginsService     ] [k8s-master.citytech.global] loaded module [x-pack-sql]
[2019-08-20T17:28:28,213][INFO ][o.e.p.PluginsService     ] [k8s-master.citytech.global] loaded module [x-pack-voting-only-node]
[2019-08-20T17:28:28,213][INFO ][o.e.p.PluginsService     ] [k8s-master.citytech.global] loaded module [x-pack-watcher]
[2019-08-20T17:28:28,214][INFO ][o.e.p.PluginsService     ] [k8s-master.citytech.global] no plugins loaded
[2019-08-20T17:28:34,896][INFO ][o.e.x.s.a.s.FileRolesStore] [k8s-master.citytech.global] parsed [0] roles from file [/etc/elasticsearch/roles.yml]
[2019-08-20T17:28:35,787][INFO ][o.e.x.m.p.l.CppLogMessageHandler] [k8s-master.citytech.global] [controller/19053] [Main.cc@110] controller (64 bit): Version 7.3.0 (Build     ff2f774f78ce63) Copyright (c) 2019 Elasticsearch BV
[2019-08-20T17:28:36,426][DEBUG][o.e.a.ActionModule       ] [k8s-master.citytech.global] Using REST wrapper from plugin org.elasticsearch.xpack.security.Security
[2019-08-20T17:28:37,041][INFO ][o.e.d.DiscoveryModule    ] [k8s-master.citytech.global] using discovery type [zen] and seed hosts providers [settings]
[2019-08-20T17:28:38,210][INFO ][o.e.n.Node               ] [k8s-master.citytech.global] initialized
[2019-08-20T17:28:38,211][INFO ][o.e.n.Node               ] [k8s-master.citytech.global] starting ...
[2019-08-20T17:28:38,424][INFO ][o.e.t.TransportService   ] [k8s-master.citytech.global] publish_address {10.20.30.179:9300}, bound_addresses {[::]:9300}
[2019-08-20T17:28:38,437][INFO ][o.e.b.BootstrapChecks    ] [k8s-master.citytech.global] bound or publishing to a non-loopback address, enforcing bootstrap checks
[2019-08-20T17:28:38,521][ERROR][o.e.b.Bootstrap          ] [k8s-master.citytech.global] 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
[2019-08-20T17:28:38,525][INFO ][o.e.n.Node               ] [k8s-master.citytech.global] stopping ...
[2019-08-20T17:28:38,613][INFO ][o.e.n.Node               ] [k8s-master.citytech.global] stopped
[2019-08-20T17:28:38,614][INFO ][o.e.n.Node               ] [k8s-master.citytech.global] closing ...
[2019-08-20T17:28:38,633][INFO ][o.e.n.Node               ] [k8s-master.citytech.global] closed
[2019-08-20T17:28:38,636][INFO ][o.e.x.m.p.NativeController] [k8s-master.citytech.global] Native controller process has stopped - no new native processes can be started

[dadoonet (David Pilato)]

Welcome!

The logs says it all.

Please read https://www.elastic.co/guide/en/elasticsearch/reference/current/bootstrap-checks.html