架构：说明我这里是伪集群的，redis 在同一台机器，Sentinel 只有一个，也存在单点故障问题
只能当作开发环境使用，要满足生产至少是下面这种架构
+-------------------+ +-------------------+ +-------------------+
| Sentinel 1 | | Sentinel 2 | | Sentinel 3 |
| (Monitoring) |<---->| (Monitoring) |<---->| (Monitoring) |
+-------------------+ +-------------------+ +-------------------+| | |v v v
+-------------------+ +-------------------+ +-------------------+
| Redis Master |<---->| Redis Slave 1 |<---->| Redis Slave 2 |
| (Port: 6379) | | (Port: 6380) | | (Port: 6381) |
+-------------------+ +-------------------+ +-------------------+安装Shell 脚本：
记得赋予可执行权限：chmod +x redis_sentinel_manager.sh
#!/bin/bash# =============================================================================
# Script Name: redis_sentinel_manager.sh
# Version: v1.4 (Enhanced stop function using ps/kill)
# Description: A script to install and manage Redis Sentinel mode on CentOS 7/8
# Author: ldj
# Creation Date: 2025-07-31
# =============================================================================# 全局变量
REDIS_VERSION="7.0.14"
REDIS_PORT1=6379
REDIS_PORT2=6380
REDIS_PORT3=6381
SENTINEL_PORT=26379
REDIS_DIR="/usr/local/redis"
DATA_DIR="/var/lib/redis"
LOG_DIR="/var/log/redis"
REDIS_PASSWORD="redis123456" # 建议设置强密码# 检查权限
if [ "$(id -u)" -ne 0 ]; thenecho "请使用root权限运行此脚本"exit 1
fi# 显示使用说明
usage() {echo "使用方法："echo "$0 <install|uninstall|start|stop>"echo ""echo "功能说明："echo " install - 安装Redis哨兵模式"echo " uninstall - 卸载Redis及相关文件"echo " start - 启动Redis服务"echo " stop - 停止Redis服务"
}# 检查Redis实例和Sentinel是否正在运行
check_running() {if pgrep -f "redis-server" > /dev/null; thenecho "[$(date +'%Y-%m-%d %H:%M:%S')] 发现Redis实例正在运行，请先停止所有Redis实例和服务后再进行安装。"exit 1fiif pgrep -f "redis-sentinel" > /dev/null; thenecho "[$(date +'%Y-%m-%d %H:%M:%S')] 发现Sentinel正在运行，请先停止Sentinel服务后再进行安装。"exit 1fi
}# 安装函数
install() {echo "[$(date +'%Y-%m-%d %H:%M:%S')] 开始安装Redis哨兵模式..."# 检查是否有正在运行的Redis实例或Sentinelcheck_running# 创建目录mkdir -p $REDIS_DIR $DATA_DIR $LOG_DIRmkdir -p $DATA_DIR/$REDIS_PORT1mkdir -p $DATA_DIR/$REDIS_PORT2mkdir -p $DATA_DIR/$REDIS_PORT3mkdir -p $DATA_DIR/sentinel# 安装依赖echo "[$(date +'%Y-%m-%d %H:%M:%S')] 安装编译依赖..."yum install -y wget gcc make tcl || { echo "安装依赖失败"; exit 1; }# 下载编译Rediscd $REDIS_DIR || { echo "无法进入目录 $REDIS_DIR"; exit 1; }echo "[$(date +'%Y-%m-%d %H:%M:%S')] 下载Redis $REDIS_VERSION..."wget https://download.redis.io/releases/redis-$REDIS_VERSION.tar.gz || { echo "下载Redis失败"; exit 1; }tar xzf redis-$REDIS_VERSION.tar.gz || { echo "解压Redis失败"; exit 1; }cd redis-$REDIS_VERSION || { echo "无法进入Redis源码目录"; exit 1; }# 编译 (在源码根目录)echo "[$(date +'%Y-%m-%d %H:%M:%S')] 编译Redis..."make || { echo "编译Redis失败"; exit 1; }# ========== 关键修复：正确安装所有二进制文件 ==========# 直接在 src 目录执行 make install，这是标准做法echo "[$(date +'%Y-%m-%d %H:%M:%S')] 安装Redis二进制文件 (server, cli, sentinel)..."cd src || { echo "无法进入 src 目录"; exit 1; }make install || { echo "安装二进制文件失败"; exit 1; }# 验证 redis-sentinel 是否安装成功if ! command -v redis-sentinel &> /dev/null; thenecho "致命错误: redis-sentinel 安装失败，未找到可执行文件。"exit 1fiecho "[$(date +'%Y-%m-%d %H:%M:%S')] redis-sentinel 安装验证通过。"# ============================================================# 可选：运行测试 (在源码根目录)echo "[$(date +'%Y-%m-%d %H:%M:%S')] 运行测试验证安装..."cd .. # 回到源码根目录make test || echo "[$(date +'%Y-%m-%d %H:%M:%S')] 测试运行完成 (可能存在非致命错误，但核心功能应正常)。"# ==================== 关键修改：配置并启动 Redis 实例 (注意顺序!) ====================echo "[$(date +'%Y-%m-%d %H:%M:%S')] 配置并启动 Redis 实例..."# --- 步骤 1: 配置并启动 主节点 (REDIS_PORT1) ---echo "[$(date +'%Y-%m-%d %H:%M:%S')] 配置主节点 (端口: $REDIS_PORT1)..."cat <<EOF > $REDIS_DIR/redis-$REDIS_PORT1.conf
port $REDIS_PORT1
bind 0.0.0.0
dir $DATA_DIR/$REDIS_PORT1
pidfile /var/run/redis-$REDIS_PORT1.pid
logfile "$LOG_DIR/redis-$REDIS_PORT1.log"
daemonize yes
appendonly yes
requirepass $REDIS_PASSWORD
masterauth $REDIS_PASSWORD
EOF# 启动主节点redis-server $REDIS_DIR/redis-$REDIS_PORT1.conf || { echo "启动主节点 $REDIS_PORT1 失败"; exit 1; }echo "[$(date +'%Y-%m-%d %H:%M:%S')] 主节点 (端口: $REDIS_PORT1) 已启动。"# --- 步骤 2: 配置并启动 从节点 (REDIS_PORT2 和 REDIS_PORT3) ---for PORT in $REDIS_PORT2 $REDIS_PORT3; doecho "[$(date +'%Y-%m-%d %H:%M:%S')] 配置从节点 (端口: $PORT)..."cat <<EOF > $REDIS_DIR/redis-$PORT.conf
port $PORT
bind 127.0.0.1
dir $DATA_DIR/$PORT
pidfile /var/run/redis-$PORT.pid
logfile "$LOG_DIR/redis-$PORT.log"
daemonize yes
appendonly yes
requirepass $REDIS_PASSWORD
masterauth $REDIS_PASSWORD
replicaof 127.0.0.1 $REDIS_PORT1
EOFdone# 启动从节点sleep 2 # 给主节点一点时间完全启动for PORT in $REDIS_PORT2 $REDIS_PORT3; doredis-server $REDIS_DIR/redis-$PORT.conf || { echo "启动从节点 $PORT 失败"; exit 1; }echo "[$(date +'%Y-%m-%d %H:%M:%S')] 从节点 (端口: $PORT) 已启动。"done# --- 步骤 3: 配置并启动 Sentinel ---echo "[$(date +'%Y-%m-%d %H:%M:%S')] 配置Sentinel..."cat <<EOF > $REDIS_DIR/sentinel.conf
port $SENTINEL_PORT
daemonize yes
pidfile /var/run/redis-sentinel.pid
logfile "$LOG_DIR/sentinel.log"
dir $DATA_DIR/sentinelsentinel monitor mymaster 127.0.0.1 $REDIS_PORT1 2
sentinel down-after-milliseconds mymaster 5000
sentinel failover-timeout mymaster 15000
sentinel parallel-syncs mymaster 1
sentinel auth-pass mymaster $REDIS_PASSWORD
EOF# 启动Sentinelecho "[$(date +'%Y-%m-%d %H:%M:%S')] 启动Sentinel..."redis-sentinel $REDIS_DIR/sentinel.conf || { echo "启动Sentinel失败"; exit 1; }echo "[$(date +'%Y-%m-%d %H:%M:%S')] Sentinel 已启动。"# 防火墙配置 (略，保持不变)echo "[$(date +'%Y-%m-%d %H:%M:%S')] 配置防火墙规则..."if systemctl is-active --quiet firewalld; thenfirewall-cmd --permanent --add-port=$REDIS_PORT1/tcpfirewall-cmd --permanent --add-port=$REDIS_PORT2/tcpfirewall-cmd --permanent --add-port=$REDIS_PORT3/tcpfirewall-cmd --permanent --add-port=$SENTINEL_PORT/tcpfirewall-cmd --reload && echo "[$(date +'%Y-%m-%d %H:%M:%S')] 防火墙规则已配置。"elseecho "[$(date +'%Y-%m-%d %H:%M:%S')] 防火墙服务(firewalld)未运行，跳过防火墙配置。"fiecho "[$(date +'%Y-%m-%d %H:%M:%S')] 安装完成！"echo "请使用 'redis-cli -p $SENTINEL_PORT' 连接 Sentinel 并检查状态。"echo "例如: redis-cli -p $SENTINEL_PORT -a $REDIS_PASSWORD"echo "在 Sentinel CLI 中执行: SENTINEL masters"
}# 卸载函数
uninstall() {echo "[$(date +'%Y-%m-%d %H:%M:%S')] 卸载Redis及相关文件..."# 停止服务stop# 删除文件rm -rf $REDIS_DIR $DATA_DIR $LOG_DIRecho "[$(date +'%Y-%m-%d %H:%M:%S')] 卸载完成！"
}# 启动函数
start() {echo "[$(date +'%Y-%m-%d %H:%M:%S')] 启动Redis服务..."for PORT in $REDIS_PORT1 $REDIS_PORT2 $REDIS_PORT3; doredis-server $REDIS_DIR/redis-$PORT.conf || { echo "启动Redis实例 $PORT 失败"; exit 1; }doneredis-sentinel $REDIS_DIR/sentinel.conf || { echo "启动Sentinel失败"; exit 1; }echo "[$(date +'%Y-%m-%d %H:%M:%S')] Redis服务已启动。"
}# 停止函数
stop() {echo "[$(date +'%Y-%m-%d %H:%M:%S')] 停止Redis服务..."# 逐个杀死 Redis 实例for PORT in $REDIS_PORT1 $REDIS_PORT2 $REDIS_PORT3; do# 查找进程pids=$(ps aux | grep -E "redis-server.*127.0.0.1:$PORT|redis-server.*:$PORT" | grep -v grep | awk '{print $2}')if [ ! -z "$pids" ]; thenecho "正在强制停止端口 $PORT 的 Redis 实例 (PID: $pids)..."# 直接发送 SIGKILL (-9)，强制终止kill -9 $pidselseecho "端口 $PORT 的 Redis 实例未找到。"fidone# 停止 Sentinelsentinel_pids=$(ps aux | grep "redis-sentinel" | grep -v grep | awk '{print $2}')if [ ! -z "$sentinel_pids" ]; thenecho "正在强制停止 Sentinel (PID: $sentinel_pids)..."# 直接发送 SIGKILL (-9)，强制终止kill -9 $sentinel_pidselseecho "Sentinel 实例未找到。"fiecho "[$(date +'%Y-%m-%d %H:%M:%S')] Redis服务已停止。"
}# 根据参数执行操作
case $1 ininstall)install;;uninstall)uninstall;;start)start;;stop)stop;;*)usageexit 1;;
esac
重新运行： ./redis_sentinel_manager.sh install
验证：
第一步：确认进程都在跑
ps -ef | grep redis- 3 个 Redis 实例（1 主 2 从）起来了。
- 1 个 Sentinel 也起来了。 ✅ 服务启动成功！
第二步：连上 Sentinel，问它“主节点是谁？”
redis-cli -p 26379
SENTINEL get-master-addr-by-name mymaster
这说明：
- Sentinel 正在监控一个叫
mymaster的主节点。 - 当前主节点是
127.0.0.1:6379。 ✅ 哨兵在正常工作！
第三步：写个数据，看能不能读到（功能测试）
1.连主节点写数据：
redis-cli -p 6379> AUTH redis123456
> SET name ldj
> exit
2.连从节点读数据：
redis-cli -p 6380
> AUTH redis123456
> GET name如果返回 "ldj"，说明主从数据同步正常
补充：
部署方式（生产推荐）
| 方法 | 工具 | 说明 |
|---|---|---|
| 1. 容器化部署（推荐） | Docker + Docker Compose / Kubernetes | 用容器封装 Redis 和 Sentinel，配置集中管理，启动快，环境一致 |
| 2. 配置管理工具 | Ansible / SaltStack / Puppet | 编写 Playbook，一键在多台机器部署，保证配置一致性 |
| 3. 云服务商托管 | 阿里云 Redis / AWS ElastiCache / Azure Cache | 完全托管，自动故障转移、备份、监控，最省心 |
补充：使用docker-compose 安装
redis-docker-compose.yml
version: '3.8'services:redis-master:image: redis:6.0container_name: redis-mastercommand: ["redis-server", "/usr/local/etc/redis/redis.conf"]volumes:- ./redis-master.conf:/usr/local/etc/redis/redis.conf- redis-data-master:/datanetworks:- redis-netports:- "6379:6379"redis-slave-1:image: redis:6.0container_name: redis-slave-1command: ["redis-server", "/usr/local/etc/redis/redis.conf"]volumes:- ./redis-slave-1.conf:/usr/local/etc/redis/redis.conf- redis-data-slave-1:/datanetworks:- redis-netports:- "6380:6379"depends_on:- redis-masterredis-slave-2:image: redis:6.0container_name: redis-slave-2command: ["redis-server", "/usr/local/etc/redis/redis.conf"]volumes:- ./redis-slave-2.conf:/usr/local/etc/redis/redis.conf- redis-data-slave-2:/datanetworks:- redis-netports:- "6381:6379"depends_on:- redis-mastersentinel-1:image: redis:6.0container_name: sentinel-1command: ["redis-sentinel", "/usr/local/etc/redis/sentinel.conf"]volumes:- ./sentinel-1.conf:/usr/local/etc/redis/sentinel.confnetworks:- redis-netports:- "26379:26379"depends_on:- redis-mastersentinel-2:image: redis:6.0container_name: sentinel-2command: ["redis-sentinel", "/usr/local/etc/redis/sentinel.conf"]volumes:- ./sentinel-2.conf:/usr/local/etc/redis/sentinel.confnetworks:- redis-netports:- "26380:26379"depends_on:- redis-mastersentinel-3:image: redis:6.0container_name: sentinel-3command: ["redis-sentinel", "/usr/local/etc/redis/sentinel.conf"]volumes:- ./sentinel-3.conf:/usr/local/etc/redis/sentinel.confnetworks:- redis-netports:- "26381:26379"depends_on:- redis-mastervolumes:redis-data-master:redis-data-slave-1:redis-data-slave-2:networks:redis-net:driver: bridge
配置文件示例
redis-master.conf
port 6379
bind 0.0.0.0
protected-mode yes
appendonly yes
requirepass yourStrongPassword!
masterauth yourStrongPassword!redis-slave-1.conf 和 redis-slave-2.confyunx
port 6379
bind 0.0.0.0
protected-mode yes
appendonly yes
requirepass yourStrongPassword!
masterauth yourStrongPassword!
slaveof redis-master 6379运行：
docker-compose -f redis-docker-compose.yml up -d
