elk报错记录
报错信息一:can not run elasticsearch as root
[root@localhost bin]# ./elasticsearch [2018-06-22T18:06:16,313][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [] uncaught exception in thread [main] org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:125) ~[elasticsearch-6.2.4.jar:6.2.4] at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:112) ~[elasticsearch-6.2.4.jar:6.2.4] at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-6.2.4.jar:6.2.4] at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-6.2.4.jar:6.2.4] at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-6.2.4.jar:6.2.4] at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) ~[elasticsearch-6.2.4.jar:6.2.4] at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:85) ~[elasticsearch-6.2.4.jar:6.2.4] Caused by: java.lang.RuntimeException: can not run elasticsearch as root at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:105) ~[elasticsearch-6.2.4.jar:6.2.4] at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:172) ~[elasticsearch-6.2.4.jar:6.2.4] at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:323) ~[elasticsearch-6.2.4.jar:6.2.4] at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:121) ~[elasticsearch-6.2.4.jar:6.2.4] ... 6 more
解决办法:
主要看报错第二行:can not run elasticsearch as root :意思是不能用root用户运行elasticesearch 新建用户elasearch 专用于操作elk groupadd elasearch useradd elasearch -g elasearch chown -R elasearch:elasearch /usr/local/elasticsearch-6.2.4/ 切换到elasticsearch用户启动es。
报错问题二: increase to at least [65536]
ERROR: [3] bootstrap checks failed [1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
上边的描述: [2018-07-05T19:24:50,764][WARN ][o.e.b.JNANatives ] Unable to lock JVM Memory: error=12, reason=Cannot allocate memory [2018-07-05T19:24:50,766][WARN ][o.e.b.JNANatives ] This can result in part of the JVM being swapped out. [2018-07-05T19:24:50,766][WARN ][o.e.b.JNANatives ] Increase RLIMIT_MEMLOCK, soft limit: 65536, hard limit: 65536 [2018-07-05T19:24:50,766][WARN ][o.e.b.JNANatives ] These can be adjusted by modifying /etc/security/limits.conf, for example: allow user 'elasticsearch' mlockall elasticsearch soft memlock unlimited elasticsearch hard memlock unlimited
解决办法:
echo '* soft nofile 65536' >> /etc/security/limits.conf echo '* hard nofile 65536' >> /etc/security/limits.conf
报错信息三:memory is not locked
[2]: memory locking requested for elasticsearch process but memory is not locked
解决办法:报错的信息也有显示这个解决办法
elasticsearch soft memlock unlimited elasticsearch hard memlock unlimited
报错信息四:AccessDeniedException
Likely root cause: java.nio.file.AccessDeniedException: /usr/local/elasticsearch-6.2.4/config/elasticsearch.keystore
原因:当前用户没有接入权限
解决办法:
chown -R elasearch:elasearch /usr/local/elasticsearch-6.2.4/
报错信息五: vm.max_map_count [65530] is too low
[3]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
解决办法:
echo 'vm.max_map_count=262144' >> /etc/sysctl.conf sysctl -p
报错信息六:
[ERROR][i.n.u.ResourceLeakDetector] LEAK: ByteBuf.release() was not called before it's garbage-collected. Enable advanced leak reporting to find out where the leak occurred. To enable advanced leak reporting, specify the JVM option '-Dio.netty.leakDetection.level=advanced' or call ResourceLeakDetector.setLevel() See http://netty.io/wiki/reference-counted-objects.html for more information.
解决办法:
修改jvm配置,添加以下配置: -Dio.netty.leakDetection.level=advanced
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