Redis 哨兵模式

服务器IP	主机角色
192.168.10.13	Redis Master
192.168.10.14	Redis Slave1
192.168.10.15	Redis Slave2

Redis Master

1. 下载 redis 安装包

   服务器支持访问互联网

   wget https://pdpublic.mingdao.com/private-deployment/offline/common/redis-6.2.16-glibc2.17-amd64.tar.gz

   服务器不支持访问互联网

   # redis 安装包文件下载链接，下载完成后上传到部署服务器
   https://pdpublic.mingdao.com/private-deployment/offline/common/redis-6.2.16-glibc2.17-amd64.tar.gz

2. 解压到安装目录

   tar -zxvf redis-6.2.16-glibc2.17-amd64.tar.gz
   mv redis-6.2.16-glibc2.17-amd64 /usr/local/redis

3. 调整内核参数

   echo 'net.core.somaxconn = 32768' >> /etc/sysctl.conf
   echo 'vm.overcommit_memory = 1' >> /etc/sysctl.conf
   sysctl -p

4. 创建 redis 数据目录

   mkdir /data/redis

5. 修改配置文件

   cat > /usr/local/redis/redis.conf <<EOF
   bind 0.0.0.0
   protected-mode yes
   port 6379
   tcp-backlog 511
   timeout 0
   tcp-keepalive 300
   daemonize no
   supervised no
   pidfile /usr/local/redis/redis.pid
   loglevel notice
   logfile /usr/local/redis/redis.log
   databases 16
   save 900 1
   save 300 10
   save 60 100000
   stop-writes-on-bgsave-error yes
   rdbcompression yes
   rdbchecksum yes
   dbfilename dump.rdb
   dir /data/redis
   slave-serve-stale-data yes
   slave-read-only yes
   repl-diskless-sync no
   repl-diskless-sync-delay 5
   repl-disable-tcp-nodelay no
   slave-priority 100
   lua-time-limit 5000
   slowlog-log-slower-than 10000
   slowlog-max-len 128
   latency-monitor-threshold 0
   notify-keyspace-events ""
   hash-max-ziplist-entries 512
   hash-max-ziplist-value 64
   list-max-ziplist-size -2
   list-compress-depth 0
   set-max-intset-entries 512
   zset-max-ziplist-entries 128
   zset-max-ziplist-value 64
   hll-sparse-max-bytes 3000
   activerehashing yes
   client-output-buffer-limit normal 0 0 0
   client-output-buffer-limit slave 256mb 64mb 60
   client-output-buffer-limit pubsub 0 0 0
   hz 10
   requirepass 123456
   masterauth 123456
   maxmemory 16gb
   maxmemory-policy allkeys-lru
   maxclients 100000
   rename-command KEYS ""
   EOF
   • redis 认证与主从认证的密码为 123456，实际部署时注意替换

6. 创建 redis 用户授权

   useradd -U -M -s /sbin/nologin redis
   chown -R redis:redis /usr/local/redis/ /data/redis

7. 配置 systemd 管理

   cat > /etc/systemd/system/redis.service <<EOF
   [Unit]
   Description=Redis
   [Service]
   User=redis
   Group=redis
   TasksMax=infinity
   LimitNOFILE=102400
   LimitNPROC=infinity
   LimitCORE=0
   ExecStart=/usr/local/redis/bin/redis-server /usr/local/redis/redis.conf
   ExecStop=/usr/bin/kill \$MAINPID
   Restart=on-failure
   [Install]
   WantedBy=multi-user.target
   EOF

8. 启动 redis 服务并加入开机自启动

   systemctl start redis
   systemctl enable redis

Redis Slave1

1. 下载 redis 安装包

   服务器支持访问互联网

   wget https://pdpublic.mingdao.com/private-deployment/offline/common/redis-6.2.16-glibc2.17-amd64.tar.gz

   服务器不支持访问互联网

   # redis 安装包文件下载链接，下载完成后上传到部署服务器
   https://pdpublic.mingdao.com/private-deployment/offline/common/redis-6.2.16-glibc2.17-amd64.tar.gz

2. 解压到安装目录

   tar -zxvf redis-6.2.16-glibc2.17-amd64.tar.gz
   mv redis-6.2.16-glibc2.17-amd64 /usr/local/redis

3. 调整内核参数

   echo 'net.core.somaxconn = 32768' >> /etc/sysctl.conf
   echo 'vm.overcommit_memory = 1' >> /etc/sysctl.conf
   sysctl -p

4. 创建 redis 数据目录

   mkdir /data/redis

5. 修改配置文件

   cat > /usr/local/redis/redis.conf <<EOF
   bind 0.0.0.0
   protected-mode yes
   port 6379
   tcp-backlog 511
   timeout 0
   tcp-keepalive 300
   daemonize no
   supervised no
   pidfile /usr/local/redis/redis.pid
   loglevel notice
   logfile /usr/local/redis/redis.log
   databases 16
   save 900 1
   save 300 10
   save 60 100000
   stop-writes-on-bgsave-error yes
   rdbcompression yes
   rdbchecksum yes
   dbfilename dump.rdb
   dir /data/redis
   slave-serve-stale-data yes
   slave-read-only yes
   repl-diskless-sync no
   repl-diskless-sync-delay 5
   repl-disable-tcp-nodelay no
   slave-priority 100
   lua-time-limit 5000
   slowlog-log-slower-than 10000
   slowlog-max-len 128
   latency-monitor-threshold 0
   notify-keyspace-events ""
   hash-max-ziplist-entries 512
   hash-max-ziplist-value 64
   list-max-ziplist-size -2
   list-compress-depth 0
   set-max-intset-entries 512
   zset-max-ziplist-entries 128
   zset-max-ziplist-value 64
   hll-sparse-max-bytes 3000
   activerehashing yes
   client-output-buffer-limit normal 0 0 0
   client-output-buffer-limit slave 256mb 64mb 60
   client-output-buffer-limit pubsub 0 0 0
   hz 10
   requirepass 123456
   masterauth 123456
   maxmemory 16gb
   maxmemory-policy allkeys-lru
   maxclients 100000
   rename-command KEYS ""
   slaveof 192.168.1.13 6379
   EOF
   • redis 认证与主从认证的密码为 123456，实际部署时注意替换
   • slaveof 参数注意在实际部署过程中进行替换 master ip地址

6. 创建 redis 用户授权

   useradd -U -M -s /sbin/nologin redis
   chown -R redis:redis /usr/local/redis/ /data/redis

7. 配置 systemd 管理

   cat > /etc/systemd/system/redis.service <<EOF
   [Unit]
   Description=Redis
   [Service]
   User=redis
   Group=redis
   TasksMax=infinity
   LimitNOFILE=102400
   LimitNPROC=infinity
   LimitCORE=0
   ExecStart=/usr/local/redis/bin/redis-server /usr/local/redis/redis.conf
   ExecStop=/usr/bin/kill \$MAINPID
   Restart=on-failure
   [Install]
   WantedBy=multi-user.target
   EOF

8. 启动 redis 服务并加入开机自启动

   systemctl start redis
   systemctl enable redis

Redis Slave2

1. 下载 redis 安装包

   服务器支持访问互联网

   wget https://pdpublic.mingdao.com/private-deployment/offline/common/redis-6.2.16-glibc2.17-amd64.tar.gz

   服务器不支持访问互联网

   # redis 安装包文件下载链接，下载完成后上传到部署服务器
   https://pdpublic.mingdao.com/private-deployment/offline/common/redis-6.2.16-glibc2.17-amd64.tar.gz

2. 解压到安装目录

   tar -zxvf redis-6.2.16-glibc2.17-amd64.tar.gz
   mv redis-6.2.16-glibc2.17-amd64 /usr/local/redis

3. 调整内核参数

   echo 'net.core.somaxconn = 32768' >> /etc/sysctl.conf
   echo 'vm.overcommit_memory = 1' >> /etc/sysctl.conf
   sysctl -p

4. 创建 redis 数据目录

   mkdir /data/redis

5. 修改配置文件

   cat > /usr/local/redis/redis.conf <<EOF
   bind 0.0.0.0
   protected-mode yes
   port 6379
   tcp-backlog 511
   timeout 0
   tcp-keepalive 300
   daemonize no
   supervised no
   pidfile /usr/local/redis/redis.pid
   loglevel notice
   logfile /usr/local/redis/redis.log
   databases 16
   save 900 1
   save 300 10
   save 60 100000
   stop-writes-on-bgsave-error yes
   rdbcompression yes
   rdbchecksum yes
   dbfilename dump.rdb
   dir /data/redis
   slave-serve-stale-data yes
   slave-read-only yes
   repl-diskless-sync no
   repl-diskless-sync-delay 5
   repl-disable-tcp-nodelay no
   slave-priority 100
   lua-time-limit 5000
   slowlog-log-slower-than 10000
   slowlog-max-len 128
   latency-monitor-threshold 0
   notify-keyspace-events ""
   hash-max-ziplist-entries 512
   hash-max-ziplist-value 64
   list-max-ziplist-size -2
   list-compress-depth 0
   set-max-intset-entries 512
   zset-max-ziplist-entries 128
   zset-max-ziplist-value 64
   hll-sparse-max-bytes 3000
   activerehashing yes
   client-output-buffer-limit normal 0 0 0
   client-output-buffer-limit slave 256mb 64mb 60
   client-output-buffer-limit pubsub 0 0 0
   hz 10
   requirepass 123456
   masterauth 123456
   maxmemory 16gb
   maxmemory-policy allkeys-lru
   maxclients 100000
   rename-command KEYS ""
   slaveof 192.168.1.13 6379
   EOF
   • redis 认证与主从认证的密码为 123456，实际部署时注意替换
   • slaveof 参数注意在实际部署过程中进行替换 master ip地址

6. 创建 redis 用户授权

   useradd -U -M -s /sbin/nologin redis
   chown -R redis:redis /usr/local/redis/ /data/redis

7. 配置 systemd 管理

   cat > /etc/systemd/system/redis.service <<EOF
   [Unit]
   Description=Redis
   [Service]
   User=redis
   Group=redis
   TasksMax=infinity
   LimitNOFILE=102400
   LimitNPROC=infinity
   LimitCORE=0
   ExecStart=/usr/local/redis/bin/redis-server /usr/local/redis/redis.conf
   ExecStop=/usr/bin/kill \$MAINPID
   Restart=on-failure
   [Install]
   WantedBy=multi-user.target
   EOF

8. 启动 redis 服务并加入开机自启动

   systemctl start redis
   systemctl enable redis

检查各节点主从同步状态

/usr/local/redis/bin/redis-cli -a 123456 info replication

哨兵配置

三台 Redis 服务器都操作

1. 配置 sentinel 配置文件

   cat > /usr/local/redis/sentinel.conf <<EOF
   sentinel deny-scripts-reconfig yes
   sentinel monitor mymaster $REDIS_MASTER_IP 6379 2
   sentinel auth-pass mymaster 123456
   sentinel down-after-milliseconds mymaster 10000
   sentinel failover-timeout mymaster 60000
   port 26379
   daemonize yes
   pidfile "/usr/local/redis/redis-sentinel.pid"
   logfile "/usr/local/redis/redis-sentinel.log"
   dir "/data/redis/sentinel"
   EOF
   • $REDIS_MASTER_IP 注意在实际部署过程中进行替换 master ip 地址
   • 哨兵密码参数 123456，实际部署时注意替换

2. 创建目录并授权 redis 相关目录权限

   mkdir -p /data/redis/sentinel
   chown -R redis:redis /data/redis /usr/local/redis

3. 配置 systemd 管理

   cat > /etc/systemd/system/sentinel.service <<EOF
   [Unit]
   Description=Redis-sentinel
   [Service]
   User=redis
   Group=redis
   Type=forking
   TasksMax=infinity
   LimitNOFILE=102400
   LimitNPROC=infinity
   LimitCORE=0
   ExecStart=/usr/local/redis/bin/redis-sentinel /usr/local/redis/sentinel.conf
   ExecStop=/usr/bin/kill \$MAINPID
   Restart=on-failure
   [Install]
   WantedBy=multi-user.target
   EOF

4. 启动哨兵

   systemctl start sentinel
   systemctl enable sentinel