[Elastic Search] org.elasticsearch.bootstrap.StartupException: java.lang.IllegalStateException: failed to obtain node locks,

ElasticSearch를 실행시 다음과 같은 에러가 발생할 경우가 있다.

 

[2019-12-31T09:28:45,708][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [localhost.localdomain] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: java.lang.IllegalStateException: failed to obtain node locks, tried [[/opt/es/elasticsearch-7.5.0/data]] with lock id [0]; maybe these locations are not writable or multiple nodes were started without increasing [node.max_local_storage_nodes] (was [1])?
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:163) ~[elasticsearch-7.5.0.jar:7.5.0]
        at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150) ~[elasticsearch-7.5.0.jar:7.5.0]
        at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-7.5.0.jar:7.5.0]
        at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:125) ~[elasticsearch-cli-7.5.0.jar:7.5.0]
        at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-7.5.0.jar:7.5.0]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:115) ~[elasticsearch-7.5.0.jar:7.5.0]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) ~[elasticsearch-7.5.0.jar:7.5.0]
Caused by: java.lang.IllegalStateException: failed to obtain node locks, tried [[/opt/es/elasticsearch-7.5.0/data]] with lock id [0]; maybe these locations are not writable or multiple nodes were started without increasing [node.max_local_storage_nodes] (was [1])?
        at org.elasticsearch.env.NodeEnvironment.(NodeEnvironment.java:299) ~[elasticsearch-7.5.0.jar:7.5.0]
        at org.elasticsearch.node.Node.(Node.java:273) ~[elasticsearch-7.5.0.jar:7.5.0]
        at org.elasticsearch.node.Node.(Node.java:253) ~[elasticsearch-7.5.0.jar:7.5.0]
        at org.elasticsearch.bootstrap.Bootstrap$5.(Bootstrap.java:221) ~[elasticsearch-7.5.0.jar:7.5.0]
        at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:221) ~[elasticsearch-7.5.0.jar:7.5.0]
        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:349) ~[elasticsearch-7.5.0.jar:7.5.0]
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159) ~[elasticsearch-7.5.0.jar:7.5.0]
        ... 6 more

 

 

원인은 ElasticSearch가 이미 실행중이기에 lock이 걸려있기에 문제가 발생하는 것이다

ElasticSearch 프로세스가 살아있는지 확인하고 종료후에 다시 실행하면 된다.

 

$ps -ef|grep elasticsearch