架構：說明我這里是偽集群的，redis 在同一臺機器，Sentinel 只有一個，也存在單點故障問題
只能當作開發環境使用，要滿足生產至少是下面這種架構?
+-------------------+ +-------------------+ +-------------------+
| 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) |
+-------------------+ +-------------------+ +-------------------+安裝Shell 腳本：
記得賦予可執行權限：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
# =============================================================================# 全局變量
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" # 建議設置強密碼# 檢查權限
if [ "$(id -u)" -ne 0 ]; thenecho "請使用root權限運行此腳本"exit 1
fi# 顯示使用說明
usage() {echo "使用方法："echo "$0 <install|uninstall|start|stop>"echo ""echo "功能說明："echo " install - 安裝Redis哨兵模式"echo " uninstall - 卸載Redis及相關文件"echo " start - 啟動Redis服務"echo " stop - 停止Redis服務"
}# 檢查Redis實例和Sentinel是否正在運行
check_running() {if pgrep -f "redis-server" > /dev/null; thenecho "[$(date +'%Y-%m-%d %H:%M:%S')] 發現Redis實例正在運行，請先停止所有Redis實例和服務后再進行安裝。"exit 1fiif pgrep -f "redis-sentinel" > /dev/null; thenecho "[$(date +'%Y-%m-%d %H:%M:%S')] 發現Sentinel正在運行，請先停止Sentinel服務后再進行安裝。"exit 1fi
}# 安裝函數
install() {echo "[$(date +'%Y-%m-%d %H:%M:%S')] 開始安裝Redis哨兵模式..."# 檢查是否有正在運行的Redis實例或Sentinelcheck_running# 創建目錄mkdir -p $REDIS_DIR $DATA_DIR $LOG_DIRmkdir -p $DATA_DIR/$REDIS_PORT1mkdir -p $DATA_DIR/$REDIS_PORT2mkdir -p $DATA_DIR/$REDIS_PORT3mkdir -p $DATA_DIR/sentinel# 安裝依賴echo "[$(date +'%Y-%m-%d %H:%M:%S')] 安裝編譯依賴..."yum install -y wget gcc make tcl || { echo "安裝依賴失敗"; exit 1; }# 下載編譯Rediscd $REDIS_DIR || { echo "無法進入目錄 $REDIS_DIR"; exit 1; }echo "[$(date +'%Y-%m-%d %H:%M:%S')] 下載Redis $REDIS_VERSION..."wget https://download.redis.io/releases/redis-$REDIS_VERSION.tar.gz || { echo "下載Redis失敗"; exit 1; }tar xzf redis-$REDIS_VERSION.tar.gz || { echo "解壓Redis失敗"; exit 1; }cd redis-$REDIS_VERSION || { echo "無法進入Redis源碼目錄"; exit 1; }# 編譯 (在源碼根目錄)echo "[$(date +'%Y-%m-%d %H:%M:%S')] 編譯Redis..."make || { echo "編譯Redis失敗"; exit 1; }# ========== 關鍵修復：正確安裝所有二進制文件 ==========# 直接在 src 目錄執行 make install，這是標準做法echo "[$(date +'%Y-%m-%d %H:%M:%S')] 安裝Redis二進制文件 (server, cli, sentinel)..."cd src || { echo "無法進入 src 目錄"; exit 1; }make install || { echo "安裝二進制文件失敗"; exit 1; }# 驗證 redis-sentinel 是否安裝成功if ! command -v redis-sentinel &> /dev/null; thenecho "致命錯誤: redis-sentinel 安裝失敗，未找到可執行文件。"exit 1fiecho "[$(date +'%Y-%m-%d %H:%M:%S')] redis-sentinel 安裝驗證通過。"# ============================================================# 可選：運行測試 (在源碼根目錄)echo "[$(date +'%Y-%m-%d %H:%M:%S')] 運行測試驗證安裝..."cd .. # 回到源碼根目錄make test || echo "[$(date +'%Y-%m-%d %H:%M:%S')] 測試運行完成 (可能存在非致命錯誤，但核心功能應正常)。"# ==================== 關鍵修改：配置并啟動 Redis 實例 (注意順序!) ====================echo "[$(date +'%Y-%m-%d %H:%M:%S')] 配置并啟動 Redis 實例..."# --- 步驟 1: 配置并啟動 主節點 (REDIS_PORT1) ---echo "[$(date +'%Y-%m-%d %H:%M:%S')] 配置主節點 (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# 啟動主節點redis-server $REDIS_DIR/redis-$REDIS_PORT1.conf || { echo "啟動主節點 $REDIS_PORT1 失敗"; exit 1; }echo "[$(date +'%Y-%m-%d %H:%M:%S')] 主節點 (端口: $REDIS_PORT1) 已啟動。"# --- 步驟 2: 配置并啟動 從節點 (REDIS_PORT2 和 REDIS_PORT3) ---for PORT in $REDIS_PORT2 $REDIS_PORT3; doecho "[$(date +'%Y-%m-%d %H:%M:%S')] 配置從節點 (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# 啟動從節點sleep 2 # 給主節點一點時間完全啟動for PORT in $REDIS_PORT2 $REDIS_PORT3; doredis-server $REDIS_DIR/redis-$PORT.conf || { echo "啟動從節點 $PORT 失敗"; exit 1; }echo "[$(date +'%Y-%m-%d %H:%M:%S')] 從節點 (端口: $PORT) 已啟動。"done# --- 步驟 3: 配置并啟動 Sentinel ---echo "[$(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 $REDIS_PASSWORD
EOF# 啟動Sentinelecho "[$(date +'%Y-%m-%d %H:%M:%S')] 啟動Sentinel..."redis-sentinel $REDIS_DIR/sentinel.conf || { echo "啟動Sentinel失敗"; exit 1; }echo "[$(date +'%Y-%m-%d %H:%M:%S')] Sentinel 已啟動。"# 防火墻配置 (略，保持不變)echo "[$(date +'%Y-%m-%d %H:%M:%S')] 配置防火墻規則..."if systemctl is-active --quiet firewalld; thenfirewall-cmd --permanent --add-port=$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')] 防火墻規則已配置。"elseecho "[$(date +'%Y-%m-%d %H:%M:%S')] 防火墻服務(firewalld)未運行，跳過防火墻配置。"fiecho "[$(date +'%Y-%m-%d %H:%M:%S')] 安裝完成！"echo "請使用 'redis-cli -p $SENTINEL_PORT' 連接 Sentinel 并檢查狀態。"echo "例如: redis-cli -p $SENTINEL_PORT -a $REDIS_PASSWORD"echo "在 Sentinel CLI 中執行: SENTINEL masters"
}# 卸載函數
uninstall() {echo "[$(date +'%Y-%m-%d %H:%M:%S')] 卸載Redis及相關文件..."# 停止服務stop# 刪除文件rm -rf $REDIS_DIR $DATA_DIR $LOG_DIRecho "[$(date +'%Y-%m-%d %H:%M:%S')] 卸載完成！"
}# 啟動函數
start() {echo "[$(date +'%Y-%m-%d %H:%M:%S')] 啟動Redis服務..."for PORT in $REDIS_PORT1 $REDIS_PORT2 $REDIS_PORT3; doredis-server $REDIS_DIR/redis-$PORT.conf || { echo "啟動Redis實例 $PORT 失敗"; exit 1; }doneredis-sentinel $REDIS_DIR/sentinel.conf || { echo "啟動Sentinel失敗"; exit 1; }echo "[$(date +'%Y-%m-%d %H:%M:%S')] Redis服務已啟動。"
}# 停止函數
stop() {echo "[$(date +'%Y-%m-%d %H:%M:%S')] 停止Redis服務..."# 逐個殺死 Redis 實例for PORT in $REDIS_PORT1 $REDIS_PORT2 $REDIS_PORT3; do# 查找進程pids=$(ps aux | grep -E "redis-server.*127.0.0.1:$PORT|redis-server.*:$PORT" | grep -v grep | awk '{print $2}')if [ ! -z "$pids" ]; thenecho "正在強制停止端口 $PORT 的 Redis 實例 (PID: $pids)..."# 直接發送 SIGKILL (-9)，強制終止kill -9 $pidselseecho "端口 $PORT 的 Redis 實例未找到。"fidone# 停止 Sentinelsentinel_pids=$(ps aux | grep "redis-sentinel" | grep -v grep | awk '{print $2}')if [ ! -z "$sentinel_pids" ]; thenecho "正在強制停止 Sentinel (PID: $sentinel_pids)..."# 直接發送 SIGKILL (-9)，強制終止kill -9 $sentinel_pidselseecho "Sentinel 實例未找到。"fiecho "[$(date +'%Y-%m-%d %H:%M:%S')] Redis服務已停止。"
}# 根據參數執行操作
case $1 ininstall)install;;uninstall)uninstall;;start)start;;stop)stop;;*)usageexit 1;;
esac?
?重新運行：?./redis_sentinel_manager.sh install
驗證：
?第一步：確認進程都在跑
ps -ef | grep redis- 3 個 Redis 實例（1 主 2 從）起來了。
- 1 個 Sentinel 也起來了。 ??服務啟動成功！
第二步：連上 Sentinel，問它“主節點是誰？”
redis-cli -p 26379
SENTINEL get-master-addr-by-name mymaster
這說明：
- Sentinel 正在監控一個叫?
mymaster?的主節點。 - 當前主節點是?
127.0.0.1:6379。 ??哨兵在正常工作！
?
第三步：寫個數據，看能不能讀到（功能測試）
1.連主節點寫數據：
redis-cli -p 6379> AUTH redis123456
> SET name ldj
> exit
2.連從節點讀數據：?
redis-cli -p 6380
> AUTH redis123456
> GET name如果返回 "ldj"，說明主從數據同步正常
?
補充：
部署方式（生產推薦）
| 方法 | 工具 | 說明 |
|---|---|---|
| 1. 容器化部署（推薦） | Docker + Docker Compose / Kubernetes | 用容器封裝 Redis 和 Sentinel，配置集中管理，啟動快，環境一致 |
| 2. 配置管理工具 | Ansible / SaltStack / Puppet | 編寫 Playbook，一鍵在多臺機器部署，保證配置一致性 |
| 3. 云服務商托管 | 阿里云 Redis / AWS ElastiCache / Azure Cache | 完全托管，自動故障轉移、備份、監控，最省心 |
?
補充：使用docker-compose 安裝
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運行：
docker-compose -f redis-docker-compose.yml up -d?
