[Elasticsearch][8.0.0] don't find cluster nodes

[kuisathaverat]

Seems like it is not possible to find any node in the cluster, even do all are up and running checking for the other nodes.

{"type": "server", "timestamp": "2019-04-17T14:12:01,189+0000", "level": "WARN", "component": "o.e.c.c.ClusterFormationFailureHelper", "cluster.name": "elasticsearch", "node.name": "elasticsearch-master-0",  "message": "master not discovered yet, this node has not previously joined a bootstrapped (v7+) cluster, and this node must discover master-eligible nodes [elasticsearch-master-0, elasticsearch-master-1, elasticsearch-master-2] to bootstrap a cluster: have discovered []; discovery will continue using [127.0.0.1:9300, 127.0.0.1:9301, 127.0.0.1:9302, 127.0.0.1:9303, 127.0.0.1:9304, [::1]:9300, [::1]:9301, [::1]:9302, [::1]:9303, [::1]:9304] from hosts providers and [{elasticsearch-master-0}{-6TRq956TxeZVWcFddKTKQ}{kLzc0NhoQj6v2LvAiCBd7A}{10.8.0.12}{10.8.0.12:9300}{ml.machine_memory=2147483648, xpack.installed=true, ml.max_open_jobs=20}] from last-known cluster state; node term 0, last-accepted version 0 in term 0"  }

Changing the name to the whole headless name does not work eather elasticsearch-master-{0..3}.elasticsearch-master-headless.default.svc.cluster.local

{"type": "server", "timestamp": "2019-04-17T14:20:53,452+0000", "level": "WARN", "component": "o.e.c.c.ClusterFormationFailureHelper", "cluster.name": "elasticsearch", "node.name": "elasticsearch-master-0",  "message": "master not discovered yet, this node has not previously joined a bootstrapped (v7+) cluster, and this node must discover master-eligible nodes [elasticsearch-master-0.elasticsearch-master-headless.default.svc.cluster.local, elasticsearch-master-1.elasticsearch-master-headless.default.svc.cluster.local, elasticsearch-master-2.elasticsearch-master-headless.default.svc.cluster.local] to bootstrap a cluster: have discovered []; discovery will continue using [127.0.0.1:9300, 127.0.0.1:9301, 127.0.0.1:9302, 127.0.0.1:9303, 127.0.0.1:9304, [::1]:9300, [::1]:9301, [::1]:9302, [::1]:9303, [::1]:9304] from hosts providers and [{elasticsearch-master-0}{-6TRq956TxeZVWcFddKTKQ}{y5MQasEnQ2W-geYeRuaHyA}{10.8.0.13}{10.8.0.13:9300}{ml.machine_memory=2147483648, xpack.installed=true, ml.max_open_jobs=20}] from last-known cluster state; node term 0, last-accepted version 0 in term 0"  }

similar to #72