08-27-周三_17-09-29
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数据库/Redis_2025/cluster_delete.sh
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262
数据库/Redis_2025/cluster_delete.sh
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#!/bin/bash
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# Redis集群删除脚本
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# 功能：删除指定Redis集群，包括停止服务、销毁集群、清理配置文件
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# 作者：EaglesLab
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# 日期：2025
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set -e
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# 颜色定义
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m' # No Color
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# 打印带颜色的消息
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print_info() {
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echo -e "${BLUE}[INFO]${NC} $1"
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}
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print_success() {
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echo -e "${GREEN}[SUCCESS]${NC} $1"
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}
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print_warning() {
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echo -e "${YELLOW}[WARNING]${NC} $1"
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}
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print_error() {
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echo -e "${RED}[ERROR]${NC} $1"
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}
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# 显示使用说明
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show_usage() {
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echo "使用方法: $0 <集群配置目录>"
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echo "示例: $0 /path/to/redis-cluster"
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echo ""
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echo "说明:"
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echo " 集群配置目录应包含Redis节点的配置文件和数据文件"
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echo " 脚本会自动检测目录中的Redis实例并进行删除操作"
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}
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# 检查参数
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if [ $# -ne 1 ]; then
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print_error "参数错误！"
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show_usage
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exit 1
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fi
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CLUSTER_DIR="$1"
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# 检查目录是否存在
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if [ ! -d "$CLUSTER_DIR" ]; then
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print_error "目录不存在: $CLUSTER_DIR"
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exit 1
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fi
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# 转换为绝对路径
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CLUSTER_DIR=$(cd "$CLUSTER_DIR" && pwd)
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print_info "准备删除Redis集群: $CLUSTER_DIR"
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# 检查目录中是否有Redis配置文件
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redis_configs=$(find "$CLUSTER_DIR" -name "redis.conf" -o -name "redis_*.conf" 2>/dev/null || true)
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if [ -z "$redis_configs" ]; then
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print_warning "在目录 $CLUSTER_DIR 中未找到Redis配置文件"
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print_info "继续执行将删除整个目录及其内容"
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else
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print_info "发现以下Redis配置文件:"
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echo "$redis_configs" | while read -r config; do
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echo " - $config"
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done
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fi
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# 获取运行中的Redis进程信息
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get_redis_processes() {
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local cluster_dir="$1"
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# 查找与集群目录相关的Redis进程
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ps aux | grep redis-server | grep -v grep | grep "$cluster_dir" || true
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}
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# 显示将要删除的内容
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print_warning "=== 删除操作概览 ==="
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print_warning "将要删除的目录: $CLUSTER_DIR"
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print_warning "目录大小: $(du -sh "$CLUSTER_DIR" 2>/dev/null | cut -f1 || echo '未知')"
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# 检查运行中的Redis进程
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running_processes=$(get_redis_processes "$CLUSTER_DIR")
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if [ -n "$running_processes" ]; then
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print_warning "发现运行中的Redis进程:"
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echo "$running_processes" | while read -r process; do
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echo " $process"
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done
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else
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print_info "未发现运行中的Redis进程"
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fi
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echo ""
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print_warning "警告: 此操作将永久删除集群数据，无法恢复！"
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echo ""
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# 第一次确认
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read -p "$(echo -e "${YELLOW}确认要删除Redis集群吗？请输入 'yes' 继续: ${NC}")" first_confirm
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if [ "$first_confirm" != "yes" ]; then
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print_info "操作已取消"
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exit 0
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fi
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echo ""
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print_error "最后确认: 即将删除 $CLUSTER_DIR 及其所有内容！"
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read -p "$(echo -e "${RED}请再次输入 'DELETE' 确认删除操作: ${NC}")" second_confirm
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if [ "$second_confirm" != "DELETE" ]; then
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print_info "操作已取消"
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exit 0
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fi
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echo ""
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print_info "开始删除Redis集群..."
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# 停止Redis服务
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stop_redis_services() {
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local cluster_dir="$1"
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print_info "正在停止Redis服务..."
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# 方法1: 通过配置文件查找并停止Redis进程
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find "$cluster_dir" -name "*.conf" | while read -r config_file; do
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if grep -q "^port" "$config_file" 2>/dev/null; then
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port=$(grep "^port" "$config_file" | awk '{print $2}')
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if [ -n "$port" ]; then
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print_info "尝试停止端口 $port 上的Redis服务..."
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redis-cli -p "$port" shutdown nosave 2>/dev/null || true
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sleep 1
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fi
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fi
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done
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# 方法2: 强制终止与集群目录相关的Redis进程
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local pids=$(ps aux | grep redis-server | grep "$cluster_dir" | grep -v grep | awk '{print $2}' || true)
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if [ -n "$pids" ]; then
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print_info "强制终止剩余的Redis进程..."
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echo "$pids" | while read -r pid; do
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if [ -n "$pid" ]; then
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print_info "终止进程 PID: $pid"
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kill -TERM "$pid" 2>/dev/null || true
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sleep 2
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# 如果进程仍然存在，使用KILL信号
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if kill -0 "$pid" 2>/dev/null; then
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print_warning "强制杀死进程 PID: $pid"
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kill -KILL "$pid" 2>/dev/null || true
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fi
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fi
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done
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fi
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# 等待进程完全停止
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sleep 3
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# 验证是否还有运行中的进程
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remaining_processes=$(get_redis_processes "$cluster_dir")
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if [ -n "$remaining_processes" ]; then
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print_warning "仍有Redis进程在运行:"
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echo "$remaining_processes"
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print_warning "请手动停止这些进程后重新运行脚本"
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return 1
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else
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print_success "所有Redis服务已停止"
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return 0
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fi
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}
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# 销毁集群配置
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destroy_cluster() {
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local cluster_dir="$1"
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print_info "正在销毁集群配置..."
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# 尝试通过任意一个节点重置集群
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find "$cluster_dir" -name "*.conf" | head -1 | while read -r config_file; do
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if [ -n "$config_file" ] && grep -q "^port" "$config_file" 2>/dev/null; then
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port=$(grep "^port" "$config_file" | awk '{print $2}')
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if [ -n "$port" ]; then
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print_info "尝试通过端口 $port 重置集群..."
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timeout 10 redis-cli -p "$port" cluster reset hard 2>/dev/null || true
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fi
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fi
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done
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print_success "集群配置销毁完成"
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}
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# 清理配置文件和数据
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cleanup_files() {
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local cluster_dir="$1"
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print_info "正在清理配置文件和数据..."
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# 删除集群相关文件
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find "$cluster_dir" -name "nodes-*.conf" -delete 2>/dev/null || true
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find "$cluster_dir" -name "dump.rdb" -delete 2>/dev/null || true
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find "$cluster_dir" -name "appendonly.aof" -delete 2>/dev/null || true
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find "$cluster_dir" -name "*.log" -delete 2>/dev/null || true
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find "$cluster_dir" -name "*.pid" -delete 2>/dev/null || true
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print_success "临时文件清理完成"
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}
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# 删除整个目录
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delete_directory() {
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local cluster_dir="$1"
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print_info "正在删除集群目录: $cluster_dir"
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if rm -rf "$cluster_dir"; then
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print_success "集群目录删除成功"
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else
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print_error "删除集群目录失败"
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return 1
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fi
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}
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# 执行删除操作
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main() {
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local cluster_dir="$1"
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local success=true
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# 停止Redis服务
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if ! stop_redis_services "$cluster_dir"; then
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print_error "停止Redis服务失败"
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success=false
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fi
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# 销毁集群（即使停止服务失败也尝试销毁）
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destroy_cluster "$cluster_dir"
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# 清理文件
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cleanup_files "$cluster_dir"
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# 删除目录
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if ! delete_directory "$cluster_dir"; then
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success=false
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fi
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if [ "$success" = true ]; then
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echo ""
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print_success "=== Redis集群删除完成 ==="
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print_success "集群目录 $cluster_dir 已被完全删除"
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print_info "所有Redis进程已停止，配置文件和数据已清理"
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else
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echo ""
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print_error "=== 删除过程中出现错误 ==="
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print_warning "请检查上述错误信息并手动处理剩余问题"
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exit 1
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fi
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}
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# 执行主函数
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main "$CLUSTER_DIR"
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echo ""
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print_info "脚本执行完成"
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