报错现象：
curl -X GET 10.254.16.193:9200/_cat/indices
{"error":{"root_cause":[{"type":"master_not_discovered_exception","reason":null}],"type":"master_not_discovered_exception","reason":null},"status":503}r日志现象：
{"type": "server", "timestamp": "2022-02-20T14:24:45,555Z", "level": "WARN", "component": "o.e.c.c.ClusterFormationFailureHelper", "cluster.name": "docker-clustde.name": "es-0", "message": "master not discovered yet, this node has not previously joined a bootstrapped (v7+) cluster, and this node must discover master-elodes [es-0.es-svc, es-1.es-svc, es-2.es-svc] to bootstrap a cluster: have discovered [{es-0}{hdINfvU5Sw2ILBX7y40ITw}{n75Kx9lARoa_j7HsIcnUmg}{10.254.16.226}{10.26:9300}{dilm}{ml.machine_memory=2147483648, xpack.installed=true, ml.max_open_jobs=20}, {es-1}{zZ1MoUB8QDKGtw-o9liqxw}{InbT9AiiTUuhahQwrgDCCw}{10.254.63.104}{10104:9300}{dilm}{ml.machine_memory=2147483648, ml.max_open_jobs=20, xpack.installed=true}, {es-2}{oqiTb3GyTpSruJRzffGsng}{KzDbF_i3T_iR2XpmFIilyA}{10.254.34.153}{4.153:9300}{dilm}{ml.machine_memory=2147483648, ml.max_open_jobs=20, xpack.installed=true}]; discovery will continue using [10.254.63.104:9300, 10.254.34.153:93 hosts providers and [{es-0}{hdINfvU5Sw2ILBX7y40ITw}{n75Kx9lARoa_j7HsIcnUmg}{10.254.16.226}{10.254.16.226:9300}{dilm}{ml.machine_memory=2147483648, xpack.instal, ml.max_open_jobs=20}] from last-known cluster state; node term 0, last-accepted version 0 in term 0" }es配置文件：
报错原因：
ELK集群配置中，node.master: true表示该节点有作为master节点的资格。一个ELK集群，可以有多个节点拥有该资格，然后通过自举的方式确定哪个节点是master节点。
上述报错是因为在ELK集群中，无法通过自举的方式在有资格成为master节点的节点中，自举出master节点，导致集群无法发现master节点
解决方案：
添加下述配置：
特别注意： value是节点name 而不是节点的IP或值SVC name