Elasticsearch 5.6.5 安装教程
下载地址 https://www.elastic.co/downloads/past-releases/elasticsearch-5-6-5
安装环境 centos6.5 , jdk1.8
一：解压
[root@localhost programs]# tar zxvf elasticsearch-5.6.5.tar.gz
二：创建ES用户和组(创建elsearch用户组及elsearch用户)
因为使用root用户执行ES程序，将会出现错误；所以这里需要创建单独的用户去执行ES 文件。
[root@localhost programs]# groupadd elsearch ##添加用户组 [root@localhost programs]# useradd elsearch -g elsearch ##添加用户到用户组 [root@localhost programs]# chown -R elsearch:elsearch elasticsearch-5.6.5 ##更改该文件夹下所属的用户组的权限
三：创建ES数据文件和日志文件
直接在root用户根目录一下创建
[root@localhost data]# mkdir /data
更改权限
[root@localhost data]# chown -R elsearch:elsearch /data/
切换用户
[root@localhost data]# su - elsearch
创建 es的data和logs目录
[elsearch@localhost ~]$ cd /data [elsearch@localhost ~]$ mkdir -p es/data [elsearch@localhost ~]$ mkdir -p es/logs
四：修改ES配置文件
进入到config文件夹，编辑 elasticsearch.yml
/usr/local/programs/elasticsearch-5.6.5/config [root@localhost config]# vi elasticsearch.yml
修改如下(没有配置集群，只是简单的配置了一下)：
#集群名称 cluster.name: my-application #节点名称 node.name: node-1 #数据存储目录（多个路径用逗号分隔） path.data: /data/es/data #日志目录 path.logs: /data/es/logs # 修改一下ES的监听地址，这样别的机器才可以访问 network.host: 10.10.10.5 # 监听端口（默认的就好） http.port: 9200
注意，设置参数的时候“：冒号”后面要有空格
五：启动
切换到elsearch用户，进入到bin 目录下执行 ./elasticsearch 命令就可以了，执行 ./elasticsearch -d 是后台运行
[elsearch@localhost bin]$ ./elasticsearch [2018-01-05T10:17:09,102][INFO ][o.e.n.Node ] [node-1] initializing ... [2018-01-05T10:17:09,271][INFO ][o.e.e.NodeEnvironment ] [node-1] using [1] data paths, mounts [[/data (/dev/mapper/ol-data)]], net usable_space [737.3gb], net total_space [737.3gb], spins? [possibly], types [xfs] [2018-01-05T10:17:09,272][INFO ][o.e.e.NodeEnvironment ] [node-1] heap size [1.9gb], compressed ordinary object pointers [true] [2018-01-05T10:17:09,273][INFO ][o.e.n.Node ] [node-1] node name [node-1], node ID [O9EeZpd5Q0yYJjRUV7bfLg] [2018-01-05T10:17:09,273][INFO ][o.e.n.Node ] [node-1] version[5.6.5], pid[4810], build[6a37571/2017-12-04T07:50:10.466Z], OS[Linux/3.8.13-35.3.1.el7uek.x86_64/amd64], JVM[Oracle Corporation/Java HotSpot(TM) 64-Bit Server VM/1.8.0_65/25.65-b01] [2018-01-05T10:17:09,274][INFO ][o.e.n.Node ] [node-1] JVM arguments [-Xms2g, -Xmx2g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -Djdk.io.permissionsUseCanonicalPath=true, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Dlog4j.skipJansi=true, -XX:+HeapDumpOnOutOfMemoryError, -Des.path.home=/usr/local/programs/elasticsearch-5.6.5] [2018-01-05T10:17:11,467][INFO ][o.e.p.PluginsService ] [node-1] loaded module [aggs-matrix-stats] [2018-01-05T10:17:11,467][INFO ][o.e.p.PluginsService ] [node-1] loaded module [ingest-common] [2018-01-05T10:17:11,467][INFO ][o.e.p.PluginsService ] [node-1] loaded module [lang-expression] [2018-01-05T10:17:11,467][INFO ][o.e.p.PluginsService ] [node-1] loaded module [lang-groovy] [2018-01-05T10:17:11,468][INFO ][o.e.p.PluginsService ] [node-1] loaded module [lang-mustache] [2018-01-05T10:17:11,468][INFO ][o.e.p.PluginsService ] [node-1] loaded module [lang-painless] [2018-01-05T10:17:11,468][INFO ][o.e.p.PluginsService ] [node-1] loaded module [parent-join] [2018-01-05T10:17:11,468][INFO ][o.e.p.PluginsService ] [node-1] loaded module [percolator] [2018-01-05T10:17:11,468][INFO ][o.e.p.PluginsService ] [node-1] loaded module [reindex] [2018-01-05T10:17:11,468][INFO ][o.e.p.PluginsService ] [node-1] loaded module [transport-netty3] [2018-01-05T10:17:11,468][INFO ][o.e.p.PluginsService ] [node-1] loaded module [transport-netty4] [2018-01-05T10:17:11,469][INFO ][o.e.p.PluginsService ] [node-1] no plugins loaded [2018-01-05T10:17:14,679][INFO ][o.e.d.DiscoveryModule ] [node-1] using discovery type [zen] [2018-01-05T10:17:15,887][INFO ][o.e.n.Node ] [node-1] initialized [2018-01-05T10:17:15,888][INFO ][o.e.n.Node ] [node-1] starting ... [2018-01-05T10:17:16,187][INFO ][o.e.t.TransportService ] [node-1] publish_address {10.10.10.5:9300}, bound_addresses {10.10.10.5:9300} [2018-01-05T10:17:16,209][INFO ][o.e.b.BootstrapChecks ] [node-1] bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks ERROR: [2] bootstrap checks failed [1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536] [2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144] [2018-01-05T10:17:16,238][INFO ][o.e.n.Node ] [node-1] stopping ... [2018-01-05T10:17:16,351][INFO ][o.e.n.Node ] [node-1] stopped [2018-01-05T10:17:16,351][INFO ][o.e.n.Node ] [node-1] closing ... [2018-01-05T10:17:16,367][INFO ][o.e.n.Node ] [node-1] closed
发现错误1:
[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
意思是说你的进程不够用了。
解决方案： 切到root 用户：进入到security目录下的limits.conf；执行命令 vi /etc/security/limits.conf ：
[root@localhost bin]# vi /etc/security/limits.conf
在文件的末尾添加下面的参数值：
* soft nofile 65536 * hard nofile 131072 * soft nproc 2048 * hard nproc 4096
发现错误2：
[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
操作系统的vm.max_map_count参数设置太小导致的，请使用root用户登录系统，执行以下命令：
[root@localhost bin]# sysctl -w vm.max_map_count=655360 vm.max_map_count = 655360 [root@localhost bin]# sysctl -a | grep "vm.max_map_count" #查看是否修改成功 vm.max_map_count = 655360
再次切换到elsearch用户，进入到bin 目录下执行 ./elasticsearch 命令，启动正常。
六：测试
外部访问需要方法9200端口，打开防火墙端口。
在浏览器中访问http://自己配置的IP地址:9200/，出现下面信息：
{ "name" : "node-1", "cluster_name" : "my-application", "cluster_uuid" : "xS4wySq2SMKdeBvSO2nxqg", "version" : { "number" : "5.6.5", "build_hash" : "6a37571", "build_date" : "2017-12-04T07:50:10.466Z", "build_snapshot" : false, "lucene_version" : "6.6.1" }, "tagline" : "You Know, for Search" }
说明可以正常访问。
