ElasticSearch Linux 환경 시작 FAQ

시작 실패 오류는 다음과 같습니다.

[2019-06-28T09:59:09,262][ERROR][o.e.b.Bootstrap          ] [node1] node validation exception
[3] bootstrap checks failed
[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535]
[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
[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
[2019-06-28T09:59:09,318][INFO ][o.e.n.Node               ] [node1] stopping ...
[2019-06-28T09:59:09,372][INFO ][o.e.n.Node               ] [node1] stopped
[2019-06-28T09:59:09,373][INFO ][o.e.n.Node               ] [node1] closing ...
[2019-06-28T09:59:09,384][INFO ][o.e.n.Node               ] [node1] closed
[2019-06-28T09:59:09,387][INFO ][o.e.x.m.p.NativeController] [node1] Native controller process has stopped - no new native processes can be started

문제1: max file descriptors [4096] for elasticsearch process is too low...원인:

[baozhe@localhost ~]$ ulimit -Hn
4096
[baozhe@localhost ~]$ ulimit -Sn
1024
[baozhe@localhost ~]$ 

해결 방법:/etc/security/limits.conf 다음을 추가합니다.

* soft nofile 65535
* hard nofile 65535

시스템 재로그인 후 적용

[baozhe@localhost ~]$ ulimit -Hn
65535
[baozhe@localhost ~]$ ulimit -Sn
65535

문제 2: max 가상 메모리 영역 vm.max_map_count [65530] is too low, increase to at least [262144]
/etc/sysctl.conf 다음 설정 추가: vm.max_map_count=262144 및 명령 실행:sysctl -p
문제3:[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 해결 방법: 프로필에 cluster를 지정합니다.initial_master_nodes 또는 시작 매개변수에 다음과 같이 지정합니다.

bin/elasticsearch -E network.host=192.168.3.22 -E node.name=node1 -E cluster.name=geektime -E path.data=node1_data -E cluster.initial_master_nodes=node1 -d

발견에 관하여.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes 더 자세한 정보는 공식 문서를 조회할 수 있습니다