REDIS 集群搭建

redis编译安装

1.下载redis源码包

• 下载源码包

  http://download.redis.io/releases/redis-5.0.12.tar.gz

• 解决依赖

  yum install epel-release gcc make wget -y

• 关闭防火墙及selinux

2.编译安装

• 解压源码包

  mkdir -pv /opt/software && tar xf redis-5.0.12.tar.gz -C /opt/software

• 编译

  cd /opt/software/redis-5.0.12
  make PREFIX=/opt/software/redis install

• 创建配置文件及日志目录

  mkdir /opt/software/redis/{etc,log} -pv

• 复制配置文件

  cd /opt/software/redis-5.0.12
  cp redis.conf ../redis/etc/

• 修改日志路径

  sed -i 's@logfile ""@logfile "/opt/software/redis/log/redis.log"@' /opt/software/redis/etc/redis.conf

• 修改配置文件

  vim /opt/software/redis/etc/redis.conf
  69 bind 0.0.0.0
  136 daemonize yes
  158 pidfile /var/run/redis_6379.pid
  171 logfile "/opt/software/redis/log/redis.log"
  263 dir /opt/software/redis/data
  294 masterauth 1qaz@WSX
  295 requirepass 1qaz@WSX
  834 cluster-enabled yes
  842 cluster-config-file nodes-6379.conf

• 修改系统配置

  vim /etc/sysctl.conf
  net.core.somaxconn = 512
  vm.overcommit_memory = 1
  # 生效
  sysctl -p

• 其他系统参数

  echo never > /sys/kernel/mm/transparent_hugepage/enabled
  echo 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' >> /etc/rc.local
  chmod a+x /etc/rc.local

• 创建redis账户

  useradd -r redis -s /sbin/nologin
  chown -R redis.redis /opt/software/redis

• 编写service文件

  [Unit]
  Description=Redis persistent key-value database
  After=network.target
  After=network-online.target
  Wants=network-online.target
  
  [Service]
  ExecStart=/opt/software/redis/bin/redis-server /opt/software/redis/etc/redis.conf --supervised systemd
  ExecReload=/bin/kill -s HUP $MAINPID 
  ExecStop=/bin/kill -s QUIT $MAINPID
  Type=notify
  User=redis
  Group=redis
  RuntimeDirectory=redis
  RuntimeDirectoryMode=0755
  
  [Install]
  WantedBy=multi-user.target

• 讲redis.service放到指定路径

  /etc/systemd/system/

3.同样操作放到另外5台服务器

4.启动6台redis

5.创建redis集群

cd /opt/software/redis/bin
./redis-cli -a 1qaz@WSX --cluster create 192.168.103.245:6379 192.168.103.248:6379 192.168.103.214:6379 192.168.103.193:6379 192.168.103.119:6379 192.168.103.134:6379 --cluster-replicas 1

• 登陆redis

  ./redis-cli
  
  # 检查集群
  127.0.0.1:6379> CLUSTER nodes
  b6409f0efb890e66b48d7b6dbb03787397d1f836 192.168.103.134:6379@16379 master - 0 1617762487000 9 connected 5461-10922
  10ab3da13ec588eb96101d4c5ebec8be8f9f05bc 192.168.103.248:6379@16379 myself,slave b6409f0efb890e66b48d7b6dbb03787397d1f836 0 1617762488000 8 connected
  f9151756c823c1eb49962086f1bd512f68884593 192.168.103.245:6379@16379 master - 0 1617762487000 11 connected 0-5460
  69a1f57e56641c7c612da8c8f6137936aea3c97f 192.168.103.193:6379@16379 master - 0 1617762489154 15 connected 10923-16383
  dd35afb1d70a70559107ea2eafee181b50641988 192.168.103.214:6379@16379 slave 69a1f57e56641c7c612da8c8f6137936aea3c97f 0 1617762487667 15 connected
  15090a833ae74e85ab6997b5b74c2eb3dbafaa89 192.168.103.119:6379@16379 slave f9151756c823c1eb49962086f1bd512f68884593 0 1617762486000 11 connected