CentOS7安装ElasticSearch集群和Kibana6

╰半橙微兮° 2022-01-14 07:21 297阅读 0赞

## 1、安装es集群 ##

用两台虚机测试：

192.168.73.141

192.168.73.142

（1）安装JDK1.8（略）

（2）关闭firewalld防火墙（略）

（3）下载并解压

wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.7.0.tar.gz
    tar -zxvf elasticsearch-6.7.0.tar.gz
    mv elasticsearch-6.7.0 /usr/local/elasticsearch-6.7.0
    cd /usr/local/elasticsearch-6.7.0

（3）配置（我这里配置两台虚机：192.168.73.141，192.168.73.142）

[root@localhost elasticsearch-6.7.0]# vi ./config/elasticsearch.yml
    #################################################
    #集群名字
    cluster.name: my-es
    #节点名字
    node.name:  node-1
    #配置为各自ip
    network.host: 192.168.73.141
    #集群节点ip都写上
    discovery.zen.ping.unicast.hosts: ["192.168.73.141", "192.168.73.142"]

（4）jvm设置

\-Xmx Java Heap最大值，默认值为物理内存的1/4，最佳设值应该视物理内存大小及计算机内其他内存开销而定；

\-Xms Java Heap初始值，Server端JVM最好将-Xms和-Xmx设为相同值，开发测试机JVM可以保留默认值；

——正式环境要设置大一些

[root@localhost elasticsearch-6.7.0]# vi ./config/jvm.options
    #############################
    -Xms1g
    -Xmx1g

（5）添加es启动用户，不能使用root用户

[root@localhost elasticsearch-6.7.0]# useradd esadmin
    [root@localhost elasticsearch-6.7.0]# chown esadmin:esadmin -R /usr/local/elasticsearch-6.7.0/

（6）修改es内核参数

#修改esadmin用户文件打开数
    [root@localhost elasticsearch-6.7.0]# vi /etc/security/limits.conf
    ##################################
    esadmin              hard    nofile          65536
    esadmin              soft    nofile          65536
    ##################################
    vi /etc/sysctl.conf 
    #增加一行
    vm.max_map_count = 262144 ##如果是linux7(centos7)以上版本这样设置不生效
    ##################################

（7）启动

##切换用户到esadmin
    su esadmin
    $ cd /usr/local/elasticsearch-6.7.0/bin
    ./elasticsearch   #前台运行，查看是否正常启动

常见错误1：

Exception in thread “main” java.nio.file.AccessDeniedException:  
错误原因：使用非 root用户启动ES，而该用户的文件权限不足而被拒绝执行。  
解决方法： chown -R 用户名:用户组 文件（目录）名

chown esadmin:esadmin -R /usr/local/elasticsearch-6.7.0/
    #看下这个目录的权限是否正确
    [root@localhost elasticsearch-6.7.0]# ls -ld /usr/local/elasticsearch-6.7.0
    drwxr-xr-x. 9 esadmin esadmin 155 6月  12 13:37 /usr/local/elasticsearch-6.7.0

常见错误2：

ERROR: \[1\] bootstrap checks failed  
\[1\]: max virtual memory areas vm.max\_map\_count \[65530\] is too low, increase to at least \[262144\]

就是第6步中设置的sysctl.conf没有生效

[root@localhost bin]# cd /etc/sysctl.d
    [root@localhost sysctl.d]# ls
    99-sysctl.conf
    [root@localhost sysctl.d]# cat 99-sysctl.conf
    # sysctl settings are defined through files in
    # /usr/lib/sysctl.d/, /run/sysctl.d/, and /etc/sysctl.d/.
    #
    # Vendors settings live in /usr/lib/sysctl.d/.
    # To override a whole file, create a new file with the same in
    # /etc/sysctl.d/ and put new settings there. To override
    # only specific settings, add a file with a lexically later
    # name in /etc/sysctl.d/ and put new settings there.
    #
    # For more information, see sysctl.conf(5) and sysctl.d(5).
    vm.max_map_count = 262144

不能直接新建sysctl.conf，这么做会全部覆盖配置。按照提示，只要再新建一个名字类似的sysctl.conf即可

[root@localhost sysctl.d]# mv 99-sysctl.conf sysctl-99.conf
    [root@localhost sysctl.d]# ls
    sysctl-99.conf
    [root@localhost sysctl.d]# sysctl -p
    vm.max_map_count = 262144
    
    ##在重启elasticsearch
    [root@localhost sysctl.d]# cd /usr/local/elasticsearch-6.7.0/bin
    ##切换用户
    su esadmin
    ./elasticsearch

在客户端telnet 端口9200，ping通说明服务已经启动

退出前台启动模式，需要杀掉刚才的es进程：kill -9 xxxx

**后台启动ES：**

[root@localhost bin]# su esadmin -c "/usr/local/elasticsearch-6.7.0/bin/elasticsearch -d"

## 2、安装Kibana ##

（1）下载kibana并解压缩

wget https://artifacts.elastic.co/downloads/kibana/kibana-6.7.0-linux-x86_64.tar.gz
    tar -zxvf kibana-6.7.0-linux-x86_64.tar.gz
    mv kibana-6.7.0-linux-x86_64 /user/local/kibana-6

（2）更改配置

vi /usr/local/kibana-6/config/kibana.yml
    #############
    server.host: "192.168.73.141"
    elasticsearch.url: "http://192.168.73.141:9200"

（3）启动Kibana

nohup /usr/local/kibana-6/bin/kibana &

默认端口号：5601

[http://192.168.73.141:5601][http_192.168.73.141_5601]

（4）停止kibana

[root@localhost bin]# ps -ef|grep kibana
    root       1736   1682  0 08:43 pts/0    00:00:00 wget https://artifacts.elastic.co/downloads/kibana/kibana-6.5.4-linux-x86_64.tar.gz
    root       4062      1  1 15:17 pts/0    00:00:17 /usr/local/kibana-6/bin/../node/bin/node --no-warnings /usr/local/kibana-6/bin/../src/cli
    root       4142   4125  0 15:38 pts/0    00:00:00 grep --color=auto kibana
    [root@localhost bin]# kill -9 4062

## 3、自动启动 ##

### （1）ES开机自启 ###

自启脚本

[root@localhost ~]# vi /etc/init.d/elasticsearch

################################
    #!/bin/sh
    #chkconfig: 2345 80 05
    #description: elasticsearch
     
    export JAVA_HOME=/usr/local/jdk1.8.0
    export JAVA_BIN=/usr/local/jdk1.8.0/bin
    export PATH=$PATH:$JAVA_HOME/bin
    export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
    export JAVA_HOME JAVA_BIN PATH CLASSPATH
     
    case "$1" in
    start)
        su esadmin<<!
        cd /usr/local/elasticsearch-6.7.0
        ./bin/elasticsearch -d
    !
        echo "elasticsearch startup"
        ;;  
    stop)
        es_pid=`ps aux|grep elasticsearch | grep -v 'grep elasticsearch' | awk '{print $2}'`
        kill -9 $es_pid
        echo "elasticsearch stopped"
        ;;  
    restart)
        es_pid=`ps aux|grep elasticsearch | grep -v 'grep elasticsearch' | awk '{print $2}'`
        kill -9 $es_pid
        echo "elasticsearch stopped"
        su esadmin<<!
        cd /usr/local/elasticsearch-6.7.0
        ./bin/elasticsearch -d
    !
        echo "elasticsearch startup"v
        ;;  
    *)
        echo "start|stop|restart"
        ;;  
    esac
     
    exit $?

保存退出，添加执行权限

chmod +x /etc/init.d/elasticsearch

加入开机启动服务

chkconfig --add elasticsearch

也可以采用 `service elasticsearch start/stop/restart`来操作

### （2）kibana6开机自启 ###

vi /etc/init.d/kibana

#!/bin/bash
    # chkconfig: 2345 98 02
    # description: kibana
    KIBANA_HOME=/usr/local/kibana-6
    case $1 in
    start) nohup $KIBANA_HOME/bin/kibana >/dev/null 2>&1 &
        echo "kibana start"
        ;;
    stop)
        es_pid=`ps -aux|grep kibana|grep -v grep|awk '{print $2}'`
        kill -9 $es_pid
        echo "kibana stopped"
        ;;  
    restart)
        es_pid=`ps -aux|grep kibana|grep -v grep|awk '{print $2}'`
        kill -9 $es_pid
        echo "kibana stopped"
    	nohup $KIBANA_HOME/bin/kibana >/dev/null 2>&1 &
    !
        echo "kibana startup"v
        ;;  
    *)
        echo "start|stop|restart"
        ;;          
    esac

保存退出，添加执行权限

chmod +x /etc/init.d/kibana

加入开机启动服务

chkconfig --add kibana

[http_192.168.73.141_5601]: http://192.168.73.141:5601/