{"id":50343,"date":"2025-07-30T23:01:36","date_gmt":"2025-07-30T15:01:36","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/50343.html"},"modified":"2025-07-30T23:01:36","modified_gmt":"2025-07-30T15:01:36","slug":"%e6%b7%b1%e5%85%a5%e8%a7%a3%e6%9e%90python%e5%a4%9a%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%9b%91%e6%8e%a7%e5%91%8a%e8%ad%a6%e7%b3%bb%e7%bb%9f%ef%bc%9a%e4%bb%8e%e5%8e%9f%e7%90%86%e5%88%b0%e7%94%9f%e4%ba%a7","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/50343.html","title":{"rendered":"\u6df1\u5165\u89e3\u6790Python\u591a\u670d\u52a1\u5668\u76d1\u63a7\u544a\u8b66\u7cfb\u7edf\uff1a\u4ece\u539f\u7406\u5230\u751f\u4ea7\u90e8\u7f72"},"content":{"rendered":"

\u6df1\u5165\u89e3\u6790Python\u591a\u670d\u52a1\u5668\u76d1\u63a7\u544a\u8b66\u7cfb\u7edf：\u4ece\u539f\u7406\u5230\u751f\u4ea7\u90e8\u7f72<\/h2>\n

\"\"<\/p>\n

\u6574\u4f53\u67b6\u6784\u56fe<\/h4>\n

\"image-20250626180939436\"<\/p>\n

\u6838\u5fc3\u8bbe\u8ba1\u601d\u60f3<\/h4>\n
  • \u65e0\u4ee3\u7406\u76d1\u63a7：\u901a\u8fc7SSH\u76f4\u63a5\u83b7\u53d6\u6570\u636e，\u65e0\u9700\u5728\u76ee\u6807\u670d\u52a1\u5668\u5b89\u88c5\u4ee3\u7406<\/li>\n
  • \u6545\u969c\u9694\u79bb：\u5355\u53f0\u670d\u52a1\u5668\u6545\u969c\u4e0d\u5f71\u54cd\u6574\u4f53\u76d1\u63a7<\/li>\n
  • \u591a\u7ea7\u68c0\u6d4b：\u7f51\u7edc\u5c42\u2192\u8d44\u6e90\u5c42\u2192\u670d\u52a1\u5c42\u5c42\u5c42\u9012\u8fdb<\/li>\n
  • \u5e42\u7b49\u8bbe\u8ba1：\u652f\u6301\u5b9a\u65f6\u91cd\u590d\u6267\u884c，\u907f\u514d\u72b6\u6001\u7d2f\u79ef<\/li>\n
    \n

    \u4ee3\u7801\u6df1\u5ea6\u89e3\u6790<\/h3>\n

    1. \u914d\u7f6e\u6a21\u5757 – \u7075\u6d3b\u7684\u53c2\u6570\u7ba1\u7406<\/h4>\n

    # \u670d\u52a1\u5668\u914d\u7f6e\u5217\u8868<\/span>
    \nSERVERS =<\/span> [<\/span>
    \n {<\/span>
    \n "host"<\/span>:<\/span> "192.168.0.224"<\/span>,<\/span>
    \n "ssh_port"<\/span>:<\/span> 22<\/span>,<\/span>
    \n "ssh_user"<\/span>:<\/span> "root"<\/span>,<\/span>
    \n "ssh_key"<\/span>:<\/span> "\/root\/.ssh\/server_monitor_key"<\/span>
    \n }<\/span>,<\/span>
    \n # \u66f4\u591a\u670d\u52a1\u5668…<\/span>
    \n]<\/span><\/p>\n

    # \u76d1\u63a7\u9608\u503c\u8bbe\u7f6e<\/span>
    \nMEMORY_THRESHOLD =<\/span> 90<\/span> # \u5185\u5b58\u9608\u503c%<\/span>
    \nCPU_THRESHOLD =<\/span> 85<\/span> # CPU\u9608\u503c%<\/span>
    \nDISK_THRESHOLD =<\/span> 95<\/span> # \u78c1\u76d8\u9608\u503c%<\/span><\/p>\n

    # \u68c0\u6d4b\u53c2\u6570<\/span>
    \nDINGTALK_WEBHOOK =<\/span> "https:\/\/oapi.dingtalk.com\/robot\/send?access_token="<\/span>
    \nPING_TIMEOUT =<\/span> 3<\/span> # \u7f51\u7edc\u68c0\u6d4b\u8d85\u65f6(\u79d2)<\/span>
    \nCHECK_INTERVAL =<\/span> 600<\/span> # \u68c0\u67e5\u95f4\u9694(\u79d2)<\/span><\/p>\n

      \n
    • \u652f\u6301\u591a\u670d\u52a1\u5668\u914d\u7f6e，\u53ef\u6269\u5c55\u6027\u5f3a<\/li>\n
    • \u5173\u952e\u53c2\u6570\u96c6\u4e2d\u7ba1\u7406，\u4fbf\u4e8e\u7ef4\u62a4<\/li>\n
    • \u652f\u6301\u4e0d\u540c\u670d\u52a1\u5668\u4f7f\u7528\u4e0d\u540c\u8ba4\u8bc1\u65b9\u5f0f<\/li>\n<\/ul>\n

      2. \u7f51\u7edc\u68c0\u6d4b\u6a21\u5757 – \u57fa\u4e8eTCP\u7684\u8fde\u901a\u6027\u68c0\u67e5<\/h4>\n

      def<\/span> check_network<\/span>(<\/span>host)<\/span>:<\/span>
      \n try<\/span>:<\/span>
      \n socket.<\/span>setdefaulttimeout(<\/span>PING_TIMEOUT)<\/span>
      \n s =<\/span> socket.<\/span>socket(<\/span>socket.<\/span>AF_INET,<\/span> socket.<\/span>SOCK_STREAM)<\/span>
      \n s.<\/span>connect(<\/span>(<\/span>host,<\/span> 22<\/span>)<\/span>)<\/span> # \u68c0\u6d4bSSH\u7aef\u53e3<\/span>
      \n s.<\/span>close(<\/span>)<\/span>
      \n return<\/span> True<\/span>
      \n except<\/span> Exception:<\/span>
      \n return<\/span> False<\/span><\/p>\n

        \n
      • \u4f7f\u7528TCP\u8fde\u63a5\u68c0\u6d4b\u66ff\u4ee3ICMP ping，\u66f4\u8d34\u8fd1\u5b9e\u9645\u670d\u52a1\u53ef\u7528\u6027<\/li>\n
      • \u68c0\u6d4bSSH\u670d\u52a1\u7aef\u53e3(22)，\u786e\u4fdd\u76d1\u63a7\u529f\u80fd\u53ef\u7528<\/li>\n
      • \u8bbe\u7f6e\u8d85\u65f6\u65f6\u95f4\u9632\u6b62\u963b\u585e<\/li>\n<\/ul>\n

        3. \u6307\u6807\u91c7\u96c6\u6a21\u5757 – SSH\u547d\u4ee4\u6267\u884c\u4e0e\u89e3\u6790<\/h4>\n

        def<\/span> get_server_metrics<\/span>(<\/span>server)<\/span>:<\/span>
        \n # \u521b\u5efaSSH\u5ba2\u6237\u7aef<\/span>
        \n ssh =<\/span> paramiko.<\/span>SSHClient(<\/span>)<\/span>
        \n ssh.<\/span>set_missing_host_key_policy(<\/span>paramiko.<\/span>AutoAddPolicy(<\/span>)<\/span>)<\/span><\/p>\n

        try<\/span>:<\/span>
        \n # \u591a\u5bc6\u94a5\u7c7b\u578b\u652f\u6301<\/span>
        \n try<\/span>:<\/span>
        \n private_key =<\/span> paramiko.<\/span>RSAKey.<\/span>from_private_key_file(<\/span>server[<\/span>"ssh_key"<\/span>]<\/span>)<\/span>
        \n except<\/span>:<\/span>
        \n try<\/span>:<\/span>
        \n private_key =<\/span> paramiko.<\/span>Ed25519Key.<\/span>from_private_key_file(<\/span>server[<\/span>"ssh_key"<\/span>]<\/span>)<\/span>
        \n except<\/span>:<\/span>
        \n private_key =<\/span> paramiko.<\/span>ECDSAKey.<\/span>from_private_key_file(<\/span>server[<\/span>"ssh_key"<\/span>]<\/span>)<\/span><\/p>\n

        # \u5efa\u7acbSSH\u8fde\u63a5<\/span>
        \n ssh.<\/span>connect(<\/span>
        \n hostname=<\/span>server[<\/span>"host"<\/span>]<\/span>,<\/span>
        \n port=<\/span>server[<\/span>"ssh_port"<\/span>]<\/span>,<\/span>
        \n username=<\/span>server[<\/span>"ssh_user"<\/span>]<\/span>,<\/span>
        \n pkey=<\/span>private_key,<\/span>
        \n timeout=<\/span>15<\/span>,<\/span>
        \n look_for_keys=<\/span>False<\/span>,<\/span>
        \n allow_agent=<\/span>False<\/span>
        \n )<\/span><\/p>\n

        # \u83b7\u53d6\u4e3b\u673a\u540d<\/span>
        \n stdin,<\/span> stdout,<\/span> stderr =<\/span> ssh.<\/span>exec_command(<\/span>"hostname"<\/span>)<\/span>
        \n hostname =<\/span> stdout.<\/span>read(<\/span>)<\/span>.<\/span>decode(<\/span>)<\/span>.<\/span>strip(<\/span>)<\/span> or<\/span> server[<\/span>"host"<\/span>]<\/span><\/p>\n

        # CPU\u76d1\u63a7\u547d\u4ee4<\/span>
        \n stdin,<\/span> stdout,<\/span> stderr =<\/span> ssh.<\/span>exec_command(<\/span>
        \n "top -bn1 | grep 'Cpu(s)' | awk -F'[ ,]+' '{print $8}' | tr -d '%' | awk '{print 100 – $1}'"<\/span>
        \n )<\/span>
        \n cpu_usage =<\/span> float<\/span>(<\/span>stdout.<\/span>read(<\/span>)<\/span>.<\/span>decode(<\/span>)<\/span>.<\/span>strip(<\/span>)<\/span>)<\/span><\/p>\n

        # \u66f4\u591a\u6307\u6807\u91c7\u96c6…<\/span><\/p>\n

        finally<\/span>:<\/span>
        \n ssh.<\/span>close(<\/span>)<\/span>
        \n return<\/span> hostname,<\/span> alerts<\/p>\n

      • \u591a\u5bc6\u94a5\u7b97\u6cd5\u652f\u6301：\u81ea\u52a8\u5c1d\u8bd5RSA\/Ed25519\/ECDSA\u7b49\u7b97\u6cd5<\/li>\n
      • \u5b89\u5168\u8fde\u63a5\u8bbe\u7f6e：\u7981\u7528SSH agent\u548c\u5bc6\u94a5\u641c\u7d22<\/li>\n
      • \u4e3b\u673a\u540d\u83b7\u53d6：\u4f18\u5148\u4f7f\u7528\u670d\u52a1\u5668\u771f\u5b9e\u4e3b\u673a\u540d<\/li>\n
      • \u8d44\u6e90\u91ca\u653e：finally\u5757\u786e\u4fddSSH\u8fde\u63a5\u5173\u95ed<\/li>\n

        4. \u544a\u8b66\u6a21\u5757 – \u9489\u9489\u673a\u5668\u4eba\u96c6\u6210<\/h4>\n

        def<\/span> send_dingtalk_message<\/span>(<\/span>message)<\/span>:<\/span>
        \n """\u53d1\u9001Markdown\u683c\u5f0f\u6d88\u606f\u5230\u9489\u9489\u673a\u5668\u4eba"""<\/span>
        \n headers =<\/span> {<\/span>"Content-Type"<\/span>:<\/span> "application\/json"<\/span>}<\/span><\/p>\n

        # \u521b\u5efaMarkdown\u683c\u5f0f\u6d88\u606f<\/span>
        \n markdown_content =<\/span> "### 🚨 \u670d\u52a1\u5668\u76d1\u63a7\u544a\u8b66\\\\n"<\/span> +<\/span> message.<\/span>replace(<\/span>"\\\\n"<\/span>,<\/span> "\\\\n\\\\n"<\/span>)<\/span><\/p>\n

        data =<\/span> {<\/span>
        \n "msgtype"<\/span>:<\/span> "markdown"<\/span>,<\/span>
        \n "markdown"<\/span>:<\/span> {<\/span>
        \n "title"<\/span>:<\/span> "\u670d\u52a1\u5668\u76d1\u63a7\u544a\u8b66"<\/span>,<\/span>
        \n "text"<\/span>:<\/span> markdown_content
        \n }<\/span>
        \n }<\/span>
        \n try<\/span>:<\/span>
        \n response =<\/span> requests.<\/span>post(<\/span>
        \n DINGTALK_WEBHOOK,<\/span>
        \n data=<\/span>json.<\/span>dumps(<\/span>data)<\/span>,<\/span>
        \n headers=<\/span>headers,<\/span>
        \n timeout=<\/span>10<\/span>
        \n )<\/span>
        \n if<\/span> response.<\/span>status_code ==<\/span> 200<\/span>:<\/span>
        \n print<\/span>(<\/span>"\u9489\u9489\u6d88\u606f\u53d1\u9001\u6210\u529f"<\/span>)<\/span>
        \n else<\/span>:<\/span>
        \n print<\/span>(<\/span>f"\u9489\u9489\u6d88\u606f\u53d1\u9001\u5931\u8d25: <\/span>{<\/span>response.<\/span>text}<\/span><\/span>"<\/span><\/span>)<\/span>
        \n except<\/span> Exception as<\/span> e:<\/span>
        \n print<\/span>(<\/span>f"\u53d1\u9001\u9489\u9489\u6d88\u606f\u65f6\u51fa\u9519: <\/span>{<\/span>str<\/span>(<\/span>e)<\/span>}<\/span><\/span>"<\/span><\/span>)<\/span><\/p>\n

          \n
        • \u6dfb\u52a0\u65f6\u95f4\u6233\u4fbf\u4e8e\u95ee\u9898\u8ffd\u8e2a<\/li>\n
        • \u5305\u542b\u76f4\u63a5\u8bbf\u95ee\u76d1\u63a7\u9762\u677f\u7684\u94fe\u63a5<\/li>\n
        • \u4f7f\u7528emoji\u589e\u5f3a\u53ef\u8bfb\u6027<\/li>\n
        • \u652f\u6301Markdown\u683c\u5f0f（\u52a0\u7c97\u3001\u6362\u884c\u7b49）<\/li>\n<\/ul>\n

          \u76d1\u63a7\u6307\u6807\u91c7\u96c6\u6280\u672f\u8be6\u89e3<\/h3>\n

          1. CPU\u4f7f\u7528\u7387\u91c7\u96c6<\/h4>\n

          top<\/span> -bn1 |<\/span> grep<\/span> 'Cpu(s)'<\/span> |<\/span> awk<\/span> -F'[ ,]+'<\/span> '{print $8<\/span>}'<\/span> |<\/span> tr<\/span> -d '%'<\/span> |<\/span> awk<\/span> '{print 100 – $1<\/span>}'<\/span><\/p>\n

          \u547d\u4ee4\u89e3\u6790：<\/p>\n

        • top -bn1：\u975e\u4ea4\u4e92\u6a21\u5f0f\u8fd0\u884ctop\u547d\u4ee4<\/li>\n
        • grep 'Cpu(s)'：\u8fc7\u6ee4CPU\u884c<\/li>\n
        • awk\u5904\u7406：\u63d0\u53d6\u7a7a\u95f2CPU\u767e\u5206\u6bd4<\/li>\n
        • 100 – \u7a7a\u95f2\u503c：\u8ba1\u7b97\u5b9e\u9645\u4f7f\u7528\u7387<\/li>\n

          2. \u5185\u5b58\u4f7f\u7528\u7387\u91c7\u96c6<\/h4>\n

          free<\/span> |<\/span> awk<\/span> 'NR==2{printf "%.2f", $3<\/span>*100\/$2<\/span> }'<\/span><\/p>\n

          \u8ba1\u7b97\u539f\u7406：<\/p>\n

          \u603b\u5185\u5b58 =<\/span> $2<\/span>
          \n\u5df2\u7528\u5185\u5b58 =<\/span> $3<\/span>
          \n\u4f7f\u7528\u7387 =<\/span> (<\/span>\u5df2\u7528\u5185\u5b58 \/ \u603b\u5185\u5b58)<\/span> * 100<\/span><\/p>\n

          3. \u78c1\u76d8\u4f7f\u7528\u7387\u91c7\u96c6<\/h4>\n

          df<\/span> -h |<\/span> awk<\/span> '$NF<\/span>=="\/"{printf "%d", $5<\/span>}'<\/span><\/p>\n

          \u5173\u952e\u53c2\u6570：<\/p>\n

            \n
          • $NF=="\/"：\u53ea\u76d1\u63a7\u6839\u5206\u533a<\/li>\n
          • $5：\u4f7f\u7528\u7387\u5217（\u5df2\u53bb\u9664%\u7b26\u53f7）<\/li>\n
          • \u53ef\u6839\u636e\u4e0d\u540c\u670d\u52a1\u5668\u6302\u8f7d\u7684\u5206\u533a\u81ea\u884c\u8c03\u6574<\/li>\n<\/ul>\n

            4. \u8fdb\u7a0b\u76d1\u63a7<\/h4>\n

            processes =<\/span> [<\/span>"kubelet"<\/span>, "dockerd"<\/span>, "kube-proxy"<\/span>]<\/span>
            \nfor<\/span> process<\/span> in<\/span> processes:
            \n stdin, stdout, stderr =<\/span> ssh.exec_command(<\/span>f"pgrep -x {process}"<\/span>)<\/span>
            \n if<\/span> not stdout.read(<\/span>)<\/span>.decode(<\/span>)<\/span>.strip(<\/span>)<\/span>:
            \n missing_processes.append(<\/span>process)<\/span><\/p>\n

            \u8fdb\u7a0b\u68c0\u6d4b\u903b\u8f91：<\/p>\n

              \n
            • \u4f7f\u7528pgrep -x\u7cbe\u786e\u5339\u914d\u8fdb\u7a0b\u540d<\/li>\n
            • \u68c0\u67e5\u8fd4\u56de\u7ed3\u679c\u662f\u5426\u4e3a\u7a7a<\/li>\n
            • \u652f\u6301\u6269\u5c55\u6dfb\u52a0\u5173\u952e\u8fdb\u7a0b<\/li>\n<\/ul>\n

              \u751f\u4ea7\u73af\u5883\u90e8\u7f72\u6307\u5357<\/h3>\n

              \u7cfb\u7edf\u67b6\u6784\u5efa\u8bae<\/h4>\n

              \"image-20250626181927407\"<\/p>\n

              \u90e8\u7f72\u6b65\u9aa4<\/h4>\n
            • \n

              \u73af\u5883\u51c6\u5907<\/p>\n

              # \u521b\u5efa\u4e13\u7528\u7528\u6237<\/span>
              \nsudo<\/span> useradd<\/span> -m -s \/bin\/bash monitor
              \nsudo<\/span> passwd<\/span> monitor<\/p>\n

              # \u5b89\u88c5\u4f9d\u8d56<\/span>
              \nsudo<\/span> apt-get<\/span> update
              \nsudo<\/span> apt-get<\/span> install<\/span> python3-pip
              \nsudo<\/span> -u monitor pip install<\/span> paramiko requests<\/p>\n<\/li>\n

            • \n

              SSH\u5bc6\u94a5\u914d\u7f6e<\/p>\n

              # \u751f\u6210\u76d1\u63a7\u4e13\u7528\u5bc6\u94a5<\/span>
              \nsudo<\/span> -u monitor ssh-keygen -t ed25519 -f \/home\/monitor\/.ssh\/server_monitor_key<\/p>\n

              # \u5206\u53d1\u516c\u94a5\u5230\u76ee\u6807\u670d\u52a1\u5668<\/span>
              \nfor<\/span> server<\/span> in<\/span> ${SERVERS[<\/span>@]<\/span>}<\/span>;<\/span> do<\/span>
              \n sudo<\/span> -u monitor ssh-copy-id -i \/home\/monitor\/.ssh\/server_monitor_key.pub ${server}<\/span>
              \ndone<\/span><\/p>\n<\/li>\n

            • \n

              \u914d\u7f6e\u6587\u4ef6\u8c03\u6574<\/p>\n

              # \u4fee\u6539\u670d\u52a1\u5668\u914d\u7f6e<\/span>
              \nSERVERS =<\/span> [<\/span>
              \n {<\/span>
              \n "host"<\/span>:<\/span> "10.0.1.101"<\/span>,<\/span>
              \n "ssh_port"<\/span>:<\/span> 22<\/span>,<\/span>
              \n "ssh_user"<\/span>:<\/span> "monitor"<\/span>,<\/span> # \u4f7f\u7528\u4e13\u7528\u8d26\u6237<\/span>
              \n "ssh_key"<\/span>:<\/span> "\/home\/monitor\/.ssh\/server_monitor_key"<\/span> # \u6b63\u786e\u8def\u5f84<\/span>
              \n }<\/span>,<\/span>
              \n # \u66f4\u591a\u670d\u52a1\u5668…<\/span>
              \n]<\/span><\/p>\n<\/li>\n

            • \n

              \u7cfb\u7edf\u670d\u52a1\u5316<\/p>\n

              bash<\/p>\n

              # \u521b\u5efasystemd\u670d\u52a1\u6587\u4ef6<\/span>
              \nsudo<\/span> tee<\/span> \/etc\/systemd\/system\/server-monitor.service <<<\/span>EOF
              \n[Unit]
              \nDescription=Server Monitoring Service
              \nAfter=network.target<\/p>\n

              [Service]
              \nUser=monitor
              \nExecStart=\/usr\/bin\/python3 \/opt\/monitor\/new_server_monitor.py
              \nRestart=always
              \nRestartSec=30<\/p>\n

              [Install]
              \nWantedBy=multi-user.target
              \nEOF<\/span><\/p>\n

              # \u542f\u52a8\u670d\u52a1<\/span>
              \nsudo<\/span> systemctl daemon-reload
              \nsudo<\/span> systemctl enable<\/span> server-monitor
              \nsudo<\/span> systemctl start server-monitor<\/p>\n<\/li>\n

              \u65e5\u5fd7\u7ba1\u7406\u65b9\u6848<\/h4>\n

              # \u67e5\u770b\u5b9e\u65f6\u65e5\u5fd7<\/span>
              \njournalctl -u server-monitor -f<\/p>\n

              # \u65e5\u5fd7\u8f6e\u8f6c\u914d\u7f6e<\/span>
              \nsudo<\/span> tee<\/span> \/etc\/logrotate.d\/server-monitor <<<\/span>EOF
              \n\/var\/log\/server-monitor.log {
              \n daily
              \n missingok
              \n rotate 30
              \n compress
              \n delaycompress
              \n notifempty
              \n create 640 monitor adm
              \n sharedscripts
              \n postrotate
              \n systemctl restart server-monitor > \/dev\/null
              \n endscript
              \n}
              \nEOF<\/span><\/p>\n

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