all-project/docs/部署文档/生产环境双机部署方案/部署脚本/health-check.sh

#!/bin/bash
# 健康检查脚本
# 用途：检查所有服务的健康状态

set -e

REDIS_PASSWORD="Hzdyjs@123456"
MYSQL_PASSWORD="Hzdyjs@Root@123456"

echo "=========================================="
echo "系统健康检查"
echo "时间: $(date '+%Y-%m-%d %H:%M:%S')"
echo "=========================================="

# 1. 检查系统资源
echo "[1/8] 检查系统资源..."
echo "CPU使用率: $(top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | awk '{print 100 - $1}')%"
echo "内存使用: $(free -h | awk '/^Mem:/ {print $3 "/" $2}')"
echo "磁盘使用: $(df -h / | awk 'NR==2 {print $3 "/" $2 " (" $5 ")"}')"

# 2. 检查MySQL主从状态
echo ""
echo "[2/8] 检查MySQL主从状态..."
if systemctl is-active --quiet mysqld; then
    echo "✓ MySQL服务运行中"
    mysql -u root -p"$MYSQL_PASSWORD" -e "SHOW SLAVE STATUS\G" 2>/dev/null | grep -E "Slave_IO_Running|Slave_SQL_Running" || echo "  (主库模式)"
else
    echo "✗ MySQL服务未运行"
fi

# 3. 检查Redis主从状态
echo ""
echo "[3/8] 检查Redis主从状态..."
if systemctl is-active --quiet redis; then
    echo "✓ Redis服务运行中"
    redis-cli -a "$REDIS_PASSWORD" INFO replication 2>/dev/null | grep -E "role|master_host|master_link_status" || echo "  (无法连接)"
else
    echo "✗ Redis服务未运行"
fi

# 4. 检查后端服务
echo ""
echo "[4/8] 检查后端服务..."
BACKEND_PORTS=(8080 8081)
for port in "${BACKEND_PORTS[@]}"; do
    if curl -sf http://127.0.0.1:$port/health > /dev/null 2>&1; then
        echo "✓ 后端服务 $port 健康"
    else
        echo "✗ 后端服务 $port 异常"
    fi
done

# 5. 检查Nginx
echo ""
echo "[5/8] 检查Nginx..."
if systemctl is-active --quiet nginx; then
    echo "✓ Nginx服务运行中"
    if curl -sf http://127.0.0.1/health > /dev/null 2>&1; then
        echo "✓ Nginx健康检查通过"
    else
        echo "✗ Nginx健康检查失败"
    fi
else
    echo "✗ Nginx服务未运行"
fi

# 6. 检查MinIO
echo ""
echo "[6/8] 检查MinIO..."
if docker ps | grep -q minio; then
    echo "✓ MinIO容器运行中"
    if curl -sf http://127.0.0.1:9000/minio/health/live > /dev/null 2>&1; then
        echo "✓ MinIO健康检查通过"
    else
        echo "✗ MinIO健康检查失败"
    fi
else
    echo "✗ MinIO容器未运行"
fi

# 7. 检查网络连通性
echo ""
echo "[7/8] 检查网络连通性..."
PEER_IP="172.16.0.67"
if [ "$(hostname -I | awk '{print $1}')" = "$PEER_IP" ]; then
    PEER_IP="172.16.0.68"
fi

if ping -c 1 -W 2 "$PEER_IP" > /dev/null 2>&1; then
    echo "✓ 对端机器 $PEER_IP 网络连通"
else
    echo "✗ 对端机器 $PEER_IP 网络不通"
fi

# 8. 检查磁盘空间
echo ""
echo "[8/8] 检查磁盘空间..."
DISK_USAGE=$(df -h / | awk 'NR==2 {print $5}' | sed 's/%//')
if [ "$DISK_USAGE" -lt 80 ]; then
    echo "✓ 磁盘使用率: ${DISK_USAGE}% (正常)"
elif [ "$DISK_USAGE" -lt 90 ]; then
    echo "⚠ 磁盘使用率: ${DISK_USAGE}% (警告)"
else
    echo "✗ 磁盘使用率: ${DISK_USAGE}% (危险)"
fi

echo ""
echo "=========================================="
echo "健康检查完成"
echo "=========================================="