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今天开始着手开始使用elasticsearch,踩坑不断,现一一记录如下:
报错:
在root用户下执行
./elasticsearch
会报如下错误
Exception in thread "main" java.lang.RuntimeException: don't run elasticsearch as root.
at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:94)
at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:160)
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:286)
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)
Refer to the log for complete error details.
原因:
这是出于系统安全考虑设置的条件。由于ElasticSearch可以接收用户输入的脚本并且执行，为了系统安全考虑， 建议创建一个单独的用户用来运行ElasticSearch
解决办法:
创建elsearch用户组及elsearch用户
groupadd elsearch
useradd elsearch -g elsearch -p elasticsearch
更改elasticsearch文件夹及内部文件的所属用户及组为elsearch:elsearch
chown -R elsearch:elsearch elasticsearch //elasticsearch为elasticsearch的目录名称
切换到elsearch用户再启动
su elsearch #切换账户
cd elasticsearch/bin #进入你的elasticsearch目录下的bin目录
./elasticsearch
或者以后台启动
./elasticsearch -d //后台启动
报错:
ERROR: bootstrap checks failed
max file descriptors [10240] for elasticsearch process likely too low, increase to at least [65536]
max number of threads [1024] for user [elsearch] likely too low, increase to at least [2048]
max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]
[2016-11-14T10:22:17,569][INFO ][o.e.n.Node ] [mysteel-node1] stopping ...
[2016-11-14T10:22:17,615][INFO ][o.e.n.Node ] [mysteel-node1] stopped
[2016-11-14T10:22:17,615][INFO ][o.e.n.Node ] [mysteel-node1] closing ...
[2016-11-14T10:22:17,638][INFO ][o.e.n.Node ] [mysteel-node1] closed
解决办法:
切换到root用户
vi /etc/security/limits.conf
添加如下内容
* soft nofile 65536
* hard nofile 131072
* soft nproc 2048
* hard nproc 4096
vi /etc/security/limits.d/90-nproc.conf
修改如下内容：
* soft nproc 1024
#修改为
* soft nproc 2048
vi /etc/sysctl.conf
添加下面配置：
vm.max_map_count=655360
并执行命令：
sysctl -p
报错:
非本地访问不通
解决办法:
vim ./config/elasticsearch.yml
在network 节点 修改 为
network.host: 0.0.0.0
报错:
[2018-02-06T16:45:24,670][WARN ][o.e.b.JNANatives ] unable to install syscall filter:
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-6.1.2.jar:6.1.2]
at org.elasticsearch.bootstrap.SystemCallFilter.init(SystemCallFilter.java:616) ~[elasticsearch-6.1.2.jar:6.1.2]
at org.elasticsearch.bootstrap.JNANatives.tryInstallSystemCallFilter(JNANatives.java:258) [elasticsearch-6.1.2.jar:6.1.2]
at org.elasticsearch.bootstrap.Natives.tryInstallSystemCallFilter(Natives.java:113) [elasticsearch-6.1.2.jar:6.1.2]
at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:109) [elasticsearch-6.1.2.jar:6.1.2]
at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:171) [elasticsearch-6.1.2.jar:6.1.2]
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:322) [elasticsearch-6.1.2.jar:6.1.2]
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:121) [elasticsearch-6.1.2.jar:6.1.2]
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:112) [elasticsearch-6.1.2.jar:6.1.2]
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) [elasticsearch-6.1.2.jar:6.1.2]
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) [elasticsearch-cli-6.1.2.jar:6.1.2]
at org.elasticsearch.cli.Command.main(Command.java:90) [elasticsearch-cli-6.1.2.jar:6.1.2]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) [elasticsearch-6.1.2.jar:6.1.2]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:85) [elasticsearch-6.1.2.jar:6.1.2]
原因:
Centos6不支持SecComp，而ES5.2.0以上默认bootstrap.system_call_filter为true进行检测，所以导致检测失败，失败后直接导致ES不能启动。
解决办法:
vim ./config/elasticsearch.yml
//在Memory 节点 添加
bootstrap.memory_lock: false
bootstrap.system_call_filter: false
终于见到可爱的画面了 : )
image.png
安装head插件方法 https://blog.csdn.net/yelllowcong/article/details/78787012
