在centos7中安装elasticsearch6.3

第一：必须要有jre

elasticsearch是用Java实现的，跑elasticsearch必须要有jre支持，所以必须先安装jre

自己百度安装（1.8）

第二：下载elasticsearch

进入官方下载 https://www.elastic.co/downloads/elasticsearch

因为是centos中运行 所以我们选 tar.gz压缩包；

下载后 用ftp上传到centos里 我们把这个文件上传到 /home/data/下

第三：解压

直接启动

sh /opt/module/elasticsearch-6.3.0/bin/elasticsearch

有报错：

java.lang.UnsupportedOperationException: seccomp unavailable: CONFIG_SECCOMP not compiled into kernel, CONFIG_SECCOMP and CONFIG_SECCOMP_FILTER are needed
at org.elasticsearch.bootstrap.SystemCallFilter.linuxImpl(SystemCallFilter.java:341) ~[elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.bootstrap.SystemCallFilter.init(SystemCallFilter.java:616) ~[elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.bootstrap.JNANatives.tryInstallSystemCallFilter(JNANatives.java:258) [elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.bootstrap.Natives.tryInstallSystemCallFilter(Natives.java:113) [elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:109) [elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:171) [elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:326) [elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:136) [elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:127) [elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) [elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) [elasticsearch-cli-6.3.0.jar:6.3.0]
at org.elasticsearch.cli.Command.main(Command.java:90) [elasticsearch-cli-6.3.0.jar:6.3.0]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:93) [elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:86) [elasticsearch-6.3.0.jar:6.3.0]
[2019-07-17T04:33:03,760][INFO ][o.e.n.Node ] [] initializing ...

解决：

在

这个文件最后面加上bootstrap.system_call_filter: false

报错：

ERROR: [3] bootstrap checks failed
[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
[2]: max number of threads [1024] for user [hadoop] is too low, increase to at least [4096]
[3]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
[2019-07-17T05:11:41,757][INFO ][o.e.n.Node ] [0SoRpF8] stopping ...
[2019-07-17T05:11:41,848][INFO ][o.e.n.Node ] [0SoRpF8] stopped
[2019-07-17T05:11:41,848][INFO ][o.e.n.Node ] [0SoRpF8] closing ...
[2019-07-17T05:11:41,947][INFO ][o.e.n.Node ] [0SoRpF8] closed

解决：

新建： /etc/security/limits.d/test-limits.conf

cat>>test-limits.conf

 

然后加下内容：

* soft nofile 65536

* hard nofile 131072

* soft nproc 4096

* hard nproc 4096

 

然后重启服务器即可；