Redis 主从模式

服务器IP	主机角色
192.168.10.13	Redis Master
192.168.10.14	Redis Slave

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-8.0.4-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-8.0.4-glibc2.17-amd64.tar.gz

2. 解压到安装目录

   tar -zxvf redis-8.0.4-glibc2.17-amd64.tar.gz
   mv redis-8.0.4-glibc2.17-amd64 /usr/local/redis

3. 调整内核参数

   echo 'net.core.somaxconn = 32768' >> /etc/sysctl.d/99-sysctl.conf
   echo 'vm.overcommit_memory = 1' >> /etc/sysctl.d/99-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 10gb
   maxmemory-policy allkeys-lru
   maxclients 100000
   rename-command KEYS ""
   EOF

   • redis 认证与主从认证的密码为 123456，实际部署必须修改为强口令
   • 若密码中包含特殊字符，仅允许 - 或 _，禁止使用 @ ! # & 等字符，以避免兼容性问题

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

9. 测试 Redis 连接登录

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

Redis Slave

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-8.0.4-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-8.0.4-glibc2.17-amd64.tar.gz

2. 解压到安装目录

   tar -zxvf redis-8.0.4-glibc2.17-amd64.tar.gz
   mv redis-8.0.4-glibc2.17-amd64 /usr/local/redis

3. 调整内核参数

   echo 'net.core.somaxconn = 32768' >> /etc/sysctl.d/99-sysctl.conf
   echo 'vm.overcommit_memory = 1' >> /etc/sysctl.d/99-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 10gb
   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，实际部署必须修改为强口令
   • 若密码中包含特殊字符，仅允许 - 或 _，禁止使用 @ ! # & 等字符，以避免兼容性问题
   • redis master ip地址注意在实际部署过程中进行替换

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

9. 测试 Redis 连接登录

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

查看主从同步状态

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