从零构建服务器健康检查体系：我的自动化运维实践

#!/bin/bash

# 健康检查主脚本

# 1. 检查 Gateway 服务状态
check_gateway() {
    local status=$(curl -s -o /dev/null -w "%{http_code}" http://127.0.0.1:18789/health)
    if [ "$status" -eq 200 ]; then
        echo "✅ Gateway: OK"
        return 0
    else
        echo "❌ Gateway: FAILED (HTTP $status)"
        return 1
    fi
}

# 2. 检查端口监听状态
check_ports() {
    local ports=(22 80 443 18789 9229)
    for port in "${ports[@]}"; do
        if netstat -tlnp 2>/dev/null | grep -q ":$port "; then
            echo "✅ Port $port: LISTENING"
        else
            echo "❌ Port $port: NOT LISTENING"
        fi
    done
}

# 3. 检查资源使用
check_resources() {
    # CPU 使用率
    local cpu=$(top -bn1 | grep "Cpu(s)" | awk '{print $2}' | cut -d'%' -f1)
    echo "📊 CPU: ${cpu}%"

    # 内存使用率
    local mem=$(free | grep Mem | awk '{printf "%.2f", $3/$2 * 100.0}')
    echo "📊 Memory: ${mem}%"

    # 磁盘使用率
    local disk=$(df -h / | tail -1 | awk '{print $5}' | cut -d'%' -f1)
    echo "📊 Disk: ${disk}%"
}

# 4. 检查网络连通性
check_network() {
    # 检查内网连通性
    local internal_hosts=("192.168.1xx.1xx" "192.168.1xx.1xx")
    for host in "${internal_hosts[@]}"; do
        if ping -c 1 -W 1 "$host" > /dev/null 2>&1; then
            echo "✅ Internal: $host REACHABLE"
        else
            echo "❌ Internal: $host UNREACHABLE"
        fi
    done
}

# 执行所有检查
echo "========== Health Check Started: $(date) =========="
check_gateway
check_ports
check_resources
check_network
echo "========== Health Check Completed: $(date) =========="

# 告警通知函数
send_alert() {
    local level=$1
    local message=$2
    local title="[${level}] Health Check Alert"

    # 钉钉通知
    curl -X POST "https://oapi.dingtalk.com/robot/send?access_token=YOUR_TOKEN" \
        -H 'Content-Type: application/json' \
        -d "{
            'msgtype': 'text',
            'text': {
                'content': '${title}\n${message}'
            }
        }"

    # 严重告警电话通知
    if [ "$level" == "P0" ]; then
        # 调用电话告警API
        curl -X POST "https://alert.******.com/call" \
            -d "message=${message}"
    fi
}

# 添加健康检查定时任务
openclaw cron add \
    --name health_check \
    --schedule "*/5 * * * *" \
    --script /opt/openclaw/scripts/health_check.sh \
    --enabled true