- 前提说明:
本人公司并没有使用elasticsearch,只是在网上看了许多帖子,和很多用人单位大数据方面的都有这些需求,个人所以选了elasticsearch开始学习!注意:该安装教程仅仅用于个人基础安装!
重要:es版本和jdk版本不同,安装有小的差异,各位小伙伴注意啦!
- 基础环境:
1. centos7 云服务器一台(我用的阿里云)
2. jdk环境变量已经配置完成(必须为jdk8,应为对应的es版本为5.1.1)
3. jdk安装参考资料1 http://www.centoscn.com/image-text/install/2014/0827/3585.html
4. jdk安装参考资料2 http://blog.csdn.net/u010800804/article/details/53037762
- 基础环境:
1. 在指定的目录下载elasticsearch
我的目录是 /alidata/server/dev/es5.1.1
执行下载命令 wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.1.1.tar.gz 下载完成后执行解压命令 tar -zxf elasticsearch-5.1.1.tar.gz
2.在指定目录进行启动
我的目录 /alidata/server/dev/es5.1.1/elasticsearch-5.1.1/bin 执行命令 ./elasticsearch
2 + 可能会报错
Memory: 4k page, physical 1882680k(761304k free), swap 0k(0k free) vm_info: Java HotSpot(TM) 64-Bit Server VM (25.111-b14) for linux-amd64 JRE (1.8.0_111-b14), built on Sep 22 2016 16:14:03 by "java_re" with gcc 4.3.0 20080428 (Red Hat 4.3.0-8) time: Wed Jan 11 17:13:51 2017 elapsed time: 0 seconds (0d 0h 0m 0s) 这是因为es默认配置了jdk的内存大小,因为我的是自己的服务器所以内存特别小 需要修改配置 我的目录是 /alidata/server/dev/es5.1.1/elasticsearch-5.1.1/config (修改jvm.options) 默认的内存是 -Xms2g -Xmx4g 修改为合适的内存 我修改为 -Xms1g -Xmx1g
2 ++ 然后再继续执行第二步 ,可能会报错
[2017-01-12T10:50:36,371][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-5.1.1.jar:5.1.1] at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:112) ~[elasticsearch-5.1.1.jar:5.1.1] at org.elasticsearch.cli.SettingCommand.execute(SettingCommand.java:54) ~[elasticsearch-5.1.1.jar:5.1.1] at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:96) ~[elasticsearch-5.1.1.jar:5.1.1] at org.elasticsearch.cli.Command.main(Command.java:62) ~[elasticsearch-5.1.1.jar:5.1.1] at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:89) ~[elasticsearch-5.1.1.jar:5.1.1] at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:82) ~[elasticsearch-5.1.1.jar:5.1.1] Caused by: java.lang.RuntimeException: can not run elasticsearch as root at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:100) ~[elasticsearch-5.1.1.jar:5.1.1] at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:176) ~[elasticsearch-5.1.1.jar:5.1.1] at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:306) ~[elasticsearch-5.1.1.jar:5.1.1] at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:121) ~[elasticsearch-5.1.1.jar:5.1.1] ... 6 more 大概的意思就是 不能用root账户执行 ,需切换一个非root账户进行启动执行 如何开通非root权限用户执行,请亲百度吧!这里给个参考资料 http://blog.csdn.net/sunxx1986/article/details/6854307
用非root账户进行启动,可能会报错
ERROR: bootstrap checks failed max file descriptors [4096] for elasticsearch process likely too low, increase to at least [65536] max number of threads [1024] for user [lishang] likely too low, increase to at least [2048] 解决：切换到root用户，编辑limits.conf 添加类似如下内容 vim /etc/security/limits.conf 添加如下内容: * soft nofile 65536 * hard nofile 131072 * soft nproc 2048 * hard nproc 4096
用非root账户进行启动,可能会报错
max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144] 解决：切换到root用户修改配置sysctl.conf vi /etc/sysctl.conf 添加下面配置： vm.max_map_count=655360 并执行命令： sysctl -p
5.最后启动,发现启动成功
[2017-01-12T11:00:48,427][INFO ][o.e.n.Node ] [] initializing ... [2017-01-12T11:00:48,751][INFO ][o.e.e.NodeEnvironment ] [K8LDTYN] using [1] data paths, mounts [[/ (rootfs)]], net usable_space [29.9gb], net total_space [39.2gb], spins? [unknown], types [rootfs] [2017-01-12T11:00:48,753][INFO ][o.e.e.NodeEnvironment ] [K8LDTYN] heap size [1015.6mb], compressed ordinary object pointers [true] [2017-01-12T11:00:48,758][INFO ][o.e.n.Node ] node name [K8LDTYN] derived from node ID [K8LDTYNFSZSaYhYeIdCywQ]; set [node.name] to override [2017-01-12T11:00:48,761][INFO ][o.e.n.Node ] version[5.1.1], pid[2050], build[5395e21/2016-12-06T12:36:15.409Z], OS[Linux/3.10.0-514.2.2.el7.x86_64/amd64], JVM[Oracle Corporation/Java HotSpot(TM) 64-Bit Server VM/1.8.0_111/25.111-b14] [2017-01-12T11:00:52,391][INFO ][o.e.p.PluginsService ] [K8LDTYN] loaded module [aggs-matrix-stats] [2017-01-12T11:00:52,396][INFO ][o.e.p.PluginsService ] [K8LDTYN] loaded module [ingest-common] [2017-01-12T11:00:52,397][INFO ][o.e.p.PluginsService ] [K8LDTYN] loaded module [lang-expression] [2017-01-12T11:00:52,397][INFO ][o.e.p.PluginsService ] [K8LDTYN] loaded module [lang-groovy] [2017-01-12T11:00:52,397][INFO ][o.e.p.PluginsService ] [K8LDTYN] loaded module [lang-mustache] [2017-01-12T11:00:52,398][INFO ][o.e.p.PluginsService ] [K8LDTYN] loaded module [lang-painless] [2017-01-12T11:00:52,398][INFO ][o.e.p.PluginsService ] [K8LDTYN] loaded module [percolator] [2017-01-12T11:00:52,399][INFO ][o.e.p.PluginsService ] [K8LDTYN] loaded module [reindex] [2017-01-12T11:00:52,399][INFO ][o.e.p.PluginsService ] [K8LDTYN] loaded module [transport-netty3] [2017-01-12T11:00:52,400][INFO ][o.e.p.PluginsService ] [K8LDTYN] loaded module [transport-netty4] [2017-01-12T11:00:52,405][INFO ][o.e.p.PluginsService ] [K8LDTYN] no plugins loaded [2017-01-12T11:00:59,810][INFO ][o.e.n.Node ] initialized [2017-01-12T11:00:59,814][INFO ][o.e.n.Node ] [K8LDTYN] starting ... [2017-01-12T11:01:00,495][INFO ][o.e.t.TransportService ] [K8LDTYN] publish_address {115.28.155.28:9300}, bound_addresses {0.0.0.0:9300} [2017-01-12T11:01:00,511][INFO ][o.e.b.BootstrapCheck ] [K8LDTYN] bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks [2017-01-12T11:01:03,768][INFO ][o.e.c.s.ClusterService ] [K8LDTYN] new_master {K8LDTYN}{K8LDTYNFSZSaYhYeIdCywQ}{enLHEaL8QdyisjbNBpkp0A}{115.28.155.28}{115.28.155.28:9300}, reason: zen-disco-elected-as-master ([0] nodes joined) [2017-01-12T11:01:03,846][INFO ][o.e.h.HttpServer ] [K8LDTYN] publish_address {115.28.155.28:9222}, bound_addresses {0.0.0.0:9222} [2017-01-12T11:01:03,847][INFO ][o.e.n.Node ] [K8LDTYN] started [2017-01-12T11:01:03,874][INFO ][o.e.g.GatewayService ] [K8LDTYN] recovered [0] indices into cluster_state
5 + 可能会发现个问题,外网访问不了的情况,内网可以访问
内网查看是否可以访问(我改了启动端口,默认为9200)
[root@iZ28m8q4tgvZ elasticsearch-head]# curl http://127.0.0.1:9222 { "name" : "K8LDTYN", "cluster_name" : "elasticsearch", "cluster_uuid" : "2KDpZHX6RTyNpm08lq3Jqg", "version" : { "number" : "5.1.1", "build_hash" : "5395e21", "build_date" : "2016-12-06T12:36:15.409Z", "build_snapshot" : false, "lucene_version" : "6.3.0" }, "tagline" : "You Know, for Search" } 外网发现ip加端口不能访问 解决办法如下: 我的目录 /alidata/server/dev/es5.1.1/elasticsearch-5.1.1/config 修改 elasticsearch.yml 修改 network.host: 0.0.0.0
最后再次启动,发现成功,外网也能访问了….
- 总结:
上面都是我遇到的问题,和大家分享,当然如果大家遇到其他问题,可以和我讨论,我也在学习研究中!
沟通qq:2502499681(请说明原因)
