[2018-10-18T05:28:57,713][ERROR][o.e.b.Bootstrap ] [node-45] node validation exception
[1] bootstrap checks failed
[1]: memory locking requested for elasticsearch process but memory is not locked

vim /etc/elasticsearch/elasticsearch.yml

bootstrap.memory_lock: true

加这么一条跟其他的关系不大

cat /usr/lib/systemd/system/elasticsearch.service

LimitMEMLOCK=infinity

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