245 lines
7.5 KiB
Bash
245 lines
7.5 KiB
Bash
#!/bin/bash
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# 数据库连接诊断脚本
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# 用于诊断和修复数据库连接池问题
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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'
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log_info() {
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echo -e "${BLUE}[INFO]${NC} $1"
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}
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log_success() {
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echo -e "${GREEN}[SUCCESS]${NC} $1"
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}
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log_warn() {
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echo -e "${YELLOW}[WARN]${NC} $1"
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}
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log_error() {
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echo -e "${RED}[ERROR]${NC} $1"
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}
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# 检查数据库服务状态
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check_database_service() {
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log_info "检查数据库服务状态..."
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if docker ps --filter "name=anxin-mysql-prod" --format "table {{.Names}}\t{{.Status}}\t{{.Ports}}" | grep anxin-mysql-prod; then
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log_success "✓ MySQL容器正在运行"
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# 检查健康状态
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local health=$(docker inspect anxin-mysql-prod --format='{{.State.Health.Status}}' 2>/dev/null || echo "unknown")
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log_info "MySQL健康状态: $health"
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if [[ "$health" == "healthy" ]]; then
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log_success "✓ MySQL容器健康检查通过"
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else
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log_warn "MySQL容器健康检查未通过"
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fi
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else
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log_error "✗ MySQL容器未运行"
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return 1
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fi
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}
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# 测试数据库连接
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test_database_connection() {
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log_info "测试数据库连接..."
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if [[ -f "environments/.env.production" ]]; then
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source environments/.env.production
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# 测试root连接
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log_info "测试root用户连接..."
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if docker exec anxin-mysql-prod mysql -uroot -p"$MYSQL_ROOT_PASSWORD" -e "SELECT 1;" 2>/dev/null; then
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log_success "✓ root用户连接成功"
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else
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log_error "✗ root用户连接失败"
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fi
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# 测试应用用户连接
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log_info "测试应用用户连接..."
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if docker exec anxin-mysql-prod mysql -u"$DB_USER" -p"$DB_PASSWORD" -e "SELECT 1;" "$DB_NAME" 2>/dev/null; then
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log_success "✓ 应用用户连接成功"
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else
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log_error "✗ 应用用户连接失败"
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fi
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# 检查数据库是否存在
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log_info "检查数据库是否存在..."
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if docker exec anxin-mysql-prod mysql -uroot -p"$MYSQL_ROOT_PASSWORD" -e "SHOW DATABASES;" | grep -q "$DB_NAME"; then
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log_success "✓ 数据库 $DB_NAME 存在"
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else
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log_error "✗ 数据库 $DB_NAME 不存在"
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fi
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fi
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}
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# 检查后端服务连接配置
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check_backend_connection_config() {
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log_info "检查后端服务连接配置..."
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if docker ps --filter "name=anxin-backend-prod" --format "{{.Names}}" | grep -q "anxin-backend-prod"; then
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log_success "✓ 后端容器正在运行"
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# 检查环境变量
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echo "数据库连接环境变量:"
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docker exec anxin-backend-prod env | grep -E "^DB_" | while read line; do
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if [[ $line == *"PASSWORD"* ]]; then
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echo " ${line%%=*}=[HIDDEN]"
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else
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echo " $line"
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fi
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done
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# 检查网络连通性
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log_info "测试容器间网络连通性..."
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if docker exec anxin-backend-prod nc -z anxin-mysql 3306 2>/dev/null; then
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log_success "✓ 后端容器可以连接到MySQL容器"
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else
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log_error "✗ 后端容器无法连接到MySQL容器"
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fi
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else
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log_error "✗ 后端容器未运行"
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fi
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}
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# 检查应用日志中的连接错误
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check_connection_errors() {
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log_info "检查应用日志中的连接错误..."
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echo "最近的数据库连接错误:"
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echo "----------------------------------------"
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./deploy.sh logs backend -e production --tail 100 | grep -i -E "(connection|datasource|mysql|jdbc)" | tail -10 || echo "未找到相关日志"
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echo "----------------------------------------"
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# 检查是否有连接池相关错误
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if ./deploy.sh logs backend -e production --tail 200 | grep -i "DataSourceClosedException"; then
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log_error "发现数据源关闭异常"
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fi
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if ./deploy.sh logs backend -e production --tail 200 | grep -i "CannotGetJdbcConnectionException"; then
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log_error "发现JDBC连接获取异常"
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fi
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}
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# 修复数据库连接问题
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fix_database_connection() {
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log_info "尝试修复数据库连接问题..."
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# 1. 重启MySQL服务
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log_info "重启MySQL服务..."
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./deploy.sh restart mysql -e production
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sleep 10
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# 2. 等待MySQL完全启动
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log_info "等待MySQL服务完全启动..."
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local max_attempts=30
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local attempt=1
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while [ $attempt -le $max_attempts ]; do
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if docker exec anxin-mysql-prod mysqladmin ping -h localhost -u root -p"$MYSQL_ROOT_PASSWORD" 2>/dev/null; then
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log_success "MySQL服务已就绪"
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break
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fi
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echo "等待MySQL服务... (尝试 $attempt/$max_attempts)"
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sleep 2
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attempt=$((attempt + 1))
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done
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if [ $attempt -gt $max_attempts ]; then
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log_error "MySQL服务启动超时"
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return 1
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fi
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# 3. 重启后端服务
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log_info "重启后端服务..."
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./deploy.sh restart backend -e production
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sleep 15
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# 4. 检查修复结果
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log_info "检查修复结果..."
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if ./deploy.sh logs backend -e production --tail 20 | grep -i "started.*in"; then
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log_success "✓ 后端服务启动成功"
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else
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log_warn "后端服务启动状态未知，请检查日志"
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fi
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}
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# 显示修复建议
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show_fix_suggestions() {
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log_info "修复建议:"
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echo "========================================"
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echo "如果问题仍然存在，请尝试以下步骤:"
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echo ""
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echo "1. 完全重启所有服务:"
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echo " ./deploy.sh down -e production"
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echo " ./deploy.sh up -e production"
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echo ""
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echo "2. 检查数据库用户权限:"
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echo " docker exec anxin-mysql-prod mysql -uroot -p"
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echo " SHOW GRANTS FOR 'anxin_prod'@'%';"
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echo ""
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echo "3. 检查数据库配置:"
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echo " docker exec anxin-mysql-prod mysql -uroot -p -e \"SHOW VARIABLES LIKE 'max_connections';\""
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echo ""
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echo "4. 如果是连接池配置问题，检查application-docker.yml中的Druid配置"
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echo ""
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echo "5. 监控资源使用情况:"
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echo " docker stats anxin-mysql-prod anxin-backend-prod"
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echo "========================================"
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}
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# 主函数
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main() {
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local action=${1:-"diagnose"}
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log_info "数据库连接诊断工具"
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echo "========================================"
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case $action in
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"diagnose")
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check_database_service
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echo ""
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test_database_connection
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echo ""
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check_backend_connection_config
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echo ""
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check_connection_errors
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echo ""
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show_fix_suggestions
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;;
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"fix")
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if [[ -f "environments/.env.production" ]]; then
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source environments/.env.production
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fix_database_connection
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echo ""
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main "diagnose"
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else
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log_error "未找到环境配置文件"
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fi
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;;
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*)
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echo "用法: $0 [diagnose|fix]"
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echo " diagnose - 诊断数据库连接问题（默认）"
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echo " fix - 尝试修复数据库连接问题"
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exit 1
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;;
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esac
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echo "========================================"
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log_success "操作完成!"
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}
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# 如果脚本被直接执行
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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main "$@"
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fi |