搭建es集群之后查看pod状态，发现一直在重启
describe查看日志，没有什么有用的信息
去子节点查看日志：journalctl -xeu kubelet
这个提示也看不出什么来
查看具体pod的日志，kubectl logs +pod名称，发现关键报错，
bootstrap check failure [1] of [3]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
bootstrap check failure [2] of [3]: 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
bootstrap check failure [3] of [3]: Transport SSL must be enabled if security is enabled. Please set [xpack.security.transport.ssl.enabled] to [true] or disable security by setting [xpack.security.enabled] to [false]
ERROR: Elasticsearch did not exit normally - check the logs at /usr/share/elasticsearch/logs/docker-cluster.log
1.首先解决第一个报错
vim /etc/sysctl.conf
添加以下内容
vm.max_map_count=262144
2.第二个报错和第三个报错是同一个问题导致的，因为我只改initial_master_nodes发现没有用，解决了第三个问题然后第二个问题也好了，第三个问题解决方案：
xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.keystore.path: /path/to/your/keystore.jks
xpack.security.transport.ssl.truststore.path: /path/to/your/truststore.jks
再次查看pod状态已经好了，日志也没有报错了
