Centos7.2 安装Elasticsearch 6
迁移文件到usr/local中
mv elasticsearch-6.0.0.tar.gz /usr/local/ cd /usr/local tar zxvf elasticsearch-6.0.0.tar.gz
修改elasticsearch6.0.0文件夹的权限，es 规定 root 用户不能启动 es，所以需要使用一个其他用户来启动 es
[hongdada@localhost elasticsearch]$ ll 总用量 27368 drwxr-xr-x. 10 hongdada hongdada 4096 11月 23 22:31 elasticsearch-6.0.0 -rwxrw-rw-. 1 root root 28017602 11月 21 22:49 elasticsearch-6.0.0.tar.gz [hongdada@localhost elasticsearch]$ chown -R root: elasticsearch-6.0.0 chown: 正在更改"elasticsearch-6.0.0/lib/elasticsearch-6.0.0.jar" 的所有者: 不允许的操作 ........ chown: 正在更改"elasticsearch-6.0.0" 的所有者: 不允许的操作 [hongdada@localhost elasticsearch]$ ll 总用量 27368 drwxr-xr-x. 10 hongdada hongdada 4096 11月 23 22:31 elasticsearch-6.0.0 -rwxrw-rw-. 1 root root 28017602 11月 21 22:49 elasticsearch-6.0.0.tar.gz [hongdada@localhost elasticsearch]$ su 密码： [root@localhost elasticsearch]# chown -R root: elasticsearch-6.0.0 [root@localhost elasticsearch]# ll 总用量 27368 drwxr-xr-x. 10 root root 4096 11月 23 22:31 elasticsearch-6.0.0 -rwxrw-rw-. 1 root root 28017602 11月 21 22:49 elasticsearch-6.0.0.tar.gz [root@localhost elasticsearch]# chown -R hongdada:hongdada elasticsearch-6.0.0 [root@localhost elasticsearch]# ll 总用量 27368 drwxr-xr-x. 10 hongdada hongdada 4096 11月 23 22:31 elasticsearch-6.0.0 -rwxrw-rw-. 1 root root 28017602 11月 21 22:49 elasticsearch-6.0.0.tar.gz
因为本来已经设置好了，为了copy命令重新改了权限
现在就可以访问本地的，但是该主机的ip192.168.1.108此时并不能访问。
要访问主机的ip,需要修改config/elasticsearch.yml文件
network.host: 0.0.0.0
取消network.host前面的注释#，并修改ip为0.0.0.0，或者本机的外网ip192.168.1.108都可以，但是0.0.0.0适用范围广。
修改配置以后要重启es,但是es的重启还有点烦，要先杀死es进程关闭，然后再次启动
重启：
[hongdada@localhost elasticsearch-6.0.0]$ cd bin [hongdada@localhost bin]$ ps -ef |grep elastic hongdada 6457 6411 0 22:41 pts/0 00:00:00 grep --color=auto elastic [hongdada@localhost bin]$ ps -ef |grep elasticsearch hongdada 6473 6411 0 22:41 pts/0 00:00:00 grep --color=auto elasticsearch [hongdada@localhost bin]$ sh elasticsearch -d [hongdada@localhost bin]$ ps -ef |grep elastic hongdada 6514 1 99 22:41 pts/0 00:00:13 /usr/local/jdk/jdk1.8.0_121/bin/java -Xms1g -Xmx1g -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+AlwaysPreTouch -server -Xss1m -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Djna.nosys=true -XX:-OmitStackTraceInFastThrow -Dio.netty.noUnsafe=true -Dio.netty.noKeySetOptimization=true -Dio.netty.recycler.maxCapacityPerThread=0 -Dlog4j.shutdownHookEnabled=false -Dlog4j2.disable.jmx=true -XX:+HeapDumpOnOutOfMemoryError -Des.path.home=/usr/local/elasticsearch/elasticsearch-6.0.0 -Des.path.conf=/usr/local/elasticsearch/elasticsearch-6.0.0/config -cp /usr/local/elasticsearch/elasticsearch-6.0.0/lib/* org.elasticsearch.bootstrap.Elasticsearch -d hongdada 6586 6411 0 22:41 pts/0 00:00:00 grep --color=auto elastic [hongdada@localhost bin]$
kill:
kill -9 6514
再次启动：
sh elasticsearch -d
安装过程中的异常：
[hongdada@localhost bin]$ sh elasticsearch [2017-11-23T23:25:41,142][INFO ][o.e.n.Node ] [] initializing ... [2017-11-23T23:25:41,203][INFO ][o.e.e.NodeEnvironment ] [l2KjKQB] using [1] data paths, mounts [[/ (rootfs)]], net usable_space [28.4gb], net total_space [35.5gb], types [rootfs] [2017-11-23T23:25:41,204][INFO ][o.e.e.NodeEnvironment ] [l2KjKQB] heap size [989.8mb], compressed ordinary object pointers [true] [2017-11-23T23:25:41,205][INFO ][o.e.n.Node ] node name [l2KjKQB] derived from node ID [l2KjKQBBSRacQ3kzNB2Qgg]; set [node.name] to override [2017-11-23T23:25:41,205][INFO ][o.e.n.Node ] version[6.0.0], pid[9359], build[8f0685b/2017-11-10T18:41:22.859Z], OS[Linux/3.10.0-514.26.2.el7.x86_64/amd64], JVM[Oracle Corporation/Java HotSpot(TM) 64-Bit Server VM/1.8.0_121/25.121-b13] [2017-11-23T23:25:41,205][INFO ][o.e.n.Node ] JVM arguments [-Xms1g, -Xmx1g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -XX:-OmitStackTraceInFastThrow, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -XX:+HeapDumpOnOutOfMemoryError, -Des.path.home=/usr/local/elasticsearch/elasticsearch-6.0.0, -Des.path.conf=/usr/local/elasticsearch/elasticsearch-6.0.0/config] [2017-11-23T23:25:41,852][INFO ][o.e.p.PluginsService ] [l2KjKQB] loaded module [aggs-matrix-stats] [2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService ] [l2KjKQB] loaded module [analysis-common] [2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService ] [l2KjKQB] loaded module [ingest-common] [2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService ] [l2KjKQB] loaded module [lang-expression] [2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService ] [l2KjKQB] loaded module [lang-mustache] [2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService ] [l2KjKQB] loaded module [lang-painless] [2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService ] [l2KjKQB] loaded module [parent-join] [2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService ] [l2KjKQB] loaded module [percolator] [2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService ] [l2KjKQB] loaded module [reindex] [2017-11-23T23:25:41,854][INFO ][o.e.p.PluginsService ] [l2KjKQB] loaded module [repository-url] [2017-11-23T23:25:41,854][INFO ][o.e.p.PluginsService ] [l2KjKQB] loaded module [transport-netty4] [2017-11-23T23:25:41,854][INFO ][o.e.p.PluginsService ] [l2KjKQB] loaded module [tribe] [2017-11-23T23:25:41,854][INFO ][o.e.p.PluginsService ] [l2KjKQB] no plugins loaded [2017-11-23T23:25:42,794][INFO ][o.e.d.DiscoveryModule ] [l2KjKQB] using discovery type [zen] [2017-11-23T23:25:43,151][INFO ][o.e.n.Node ] initialized [2017-11-23T23:25:43,151][INFO ][o.e.n.Node ] [l2KjKQB] starting ... [2017-11-23T23:25:43,245][INFO ][o.e.t.TransportService ] [l2KjKQB] publish_address {192.168.1.108:9300}, bound_addresses {[::]:9300} [2017-11-23T23:25:43,253][INFO ][o.e.b.BootstrapChecks ] [l2KjKQB] 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] [2017-11-23T23:25:43,258][INFO ][o.e.n.Node ] [l2KjKQB] stopping ... [2017-11-23T23:25:43,308][INFO ][o.e.n.Node ] [l2KjKQB] stopped [2017-11-23T23:25:43,308][INFO ][o.e.n.Node ] [l2KjKQB] closing ... [2017-11-23T23:25:43,314][INFO ][o.e.n.Node ] [l2KjKQB] closed
这里面很明显的有两个参数的值太小
1.max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
修改/etc/security/limits.conf文件，添加或修改如下行：
* hard nofile 65536 * soft nofile 65536
2.max virtual memory areas vm.max......
修改 /etc/sysctl.conf 文件,添加如下行：
vm.max_map_count=262144
修改好了以后，调用sysctl -a查看，发现参数并没有变动，要重启才可以。
重启以后，再启动es即可，就可以通过主机ip访问。
这个时候可以在本机通过本机ip访问，还没有开防火墙，外网是不可以访问的。
https://www.biaodianfu.com/centos-7-install-elasticsearch.html
http://blog.csdn.net/sinat_29581293/article/details/53894033
http://blog.csdn.net/lu_wei_wei/article/details/51263153
