Centos7 搭建elasticsearch6.3.0集群

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#前提：配置java环境变量

#下载
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.3.0.tar.gz

#解压
tar -zxvf elasticsearch-6.3.0.tar.gz

#修改名称
mv elasticsearch-6.3.0 es630

#添加组
groupadd es_admin

#添加用户
useradd es_admin -g es_admin

#修改用户密码
echo 'es_admin' | passwd --stdin es_admin

#给用户提权限
chown -Rf es_admin:es_admin /usr/local/elk/es630

创建数据和日志目录
mkdir -pv /usr/local/elk/es630/data/{data1,data2,data3,logs}


#修改max_map_count
[root@localhost es630]# echo 'vm.max_map_count=655360' >> /etc/sysctl.conf
[root@localhost es630]# sysctl -p
vm.max_map_count = 655360

#内存问题
[root@localhost es630]#  echo '* soft memlock unlimited' >> /etc/security/limits.conf
[root@localhost es630]#  echo '* hard memlock unlimited' >> /etc/security/limits.conf
[root@localhost es630]# tail -2 /etc/security/limits.conf
* soft memlock unlimited
* hard memlock unlimited

修改文件描述符
echo '* soft nofile 65536' >> /etc/security/limits.conf
echo '* hard nofile 65536' >> /etc/security/limits.conf
然后重新登录终端
ulimit -n
65536

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cluster.name: elasticsearch
node.name: es_node1
node.master: true
node.data: true

path.data: /usr/local/elk/es630/data/data1,/usr/local/elk/es630/data/data2,/usr/local/elk/es630/data/data3
path.logs: /usr/local/elk/es630/data/logs

bootstrap.memory_lock: false
bootstrap.system_call_filter: false

network.host: 10.211.55.7 
network.tcp.no_delay: true
network.tcp.keep_alive: true
network.tcp.reuse_address: true
network.tcp.send_buffer_size: 64mb
network.tcp.receive_buffer_size: 64mb

transport.tcp.port: 9301
transport.tcp.compress: true
http.max_content_length: 100mb
http.enabled: true

#解决跨域问题
http.cors.enabled: true
http.cors.allow-origin: "*"
http.cors.allow-methods: OPTIONS, HEAD, GET, POST, PUT, DELETE
http.cors.allow-headers: "X-Requested-With, Content-Type, Content-Length, X-User"

http.port: 9201

discovery.zen.minimum_master_nodes: 2
discovery.zen.fd.ping_timeout: 150s
discovery.zen.fd.ping_retries: 6
discovery.zen.fd.ping_interval: 15s

cluster.routing.allocation.cluster_concurrent_rebalance: 16
cluster.routing.allocation.node_concurrent_recoveries: 16
cluster.routing.allocation.node_initial_primaries_recoveries: 16

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scp -r /usr/local/elk/es630/config/elasticsearch.yml root@192.168.22.167:/usr/local/elk/es630/config/   

scp -r /usr/local/elk/es630/config/elasticsearch.yml root@192.168.22.166:/usr/local/elk/es630/config/

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node.name: es_node2
node.name: es_node3

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#!/bin/sh
#chkconfig: 2345 80 05
#description: elasticsearch
#author: jason
 
export JAVA_HOME=/usr/java/jdk1.8.0_191-amd64/
export JAVA_BIN=/usr/java/jdk1.8.0_191-amd64/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 es_admin<<!
    cd /usr/local/elk/es630
    ./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 es_admin<<!
    cd /usr/local/elk/es630
    ./bin/elasticsearch -d
!
    echo "elasticsearch startup"
    ;;  
*)
    echo "start|stop|restart"
    ;;  
esac

exit $?

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#修改文件权限
sudo chmod +x /etc/init.d/elasticsearch

#添加开机自启
sudo chkconfig --add /etc/init.d/elasticsearch

#切换到es_admin用户，定位es安装路径的bin目录，后台启动
./elasticsearch -d

#查看是否启动成功
ps aux|grep elasticsearch

#查看节点
curl -XGET 'http://192.168.22.165:9201/_cat/nodes?v'

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[root@localhost ~]# java -version
java version "1.7.0_51"
OpenJDK Runtime Environment (rhel-2.4.5.5.el7-x86_64 u51-b31)
OpenJDK 64-Bit Server VM (build 24.51-b03, mixed mode)
[root@localhost ~]# which java
/usr/bin/java
[root@localhost ~]# ls -lrt /usr/bin/java
lrwxrwxrwx. 1 root root 22 9月   6 22:51 /usr/bin/java -> /etc/alternatives/java
[root@localhost ~]# ls -lrt /etc/alternatives/java
lrwxrwxrwx. 1 root root 72 9月   6 22:51 /etc/alternatives/java -> /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.51-2.4.5.5.el7.x86_64/jre/bin/java

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查看防火墙状态： systemctl status firewalld.service
执行关闭命令： systemctl stop firewalld.service
启动防火墙：systemctl start firewalld.service
执行开机禁用防火墙自启命令  ： systemctl disable firewalld.service

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sudo passwd user_name

然后连续两次输入新的用户密码即可；