メールアラートによるディスク自動クリーンアップ - サーバーログクイーン作業フロー

• •特別な前提条件なし、インポートしてすぐに使用可能

{
  "id": "4Y5VQwUUo7uqPPL1",
  "meta": {
    "instanceId": "dd69efaf8212c74ad206700d104739d3329588a6f3f8381a46a481f34c9cc281",
    "templateCredsSetupCompleted": true
  },
  "name": "Auto Disk Cleanup via Email Alert – Server Log Purge Workflow",
  "tags": [],
  "nodes": [
    {
      "id": "8c1aac94-9e6a-4b14-a177-3a00644ea232",
      "name": "ディスクアラートメールの確認",
      "type": "n8n-nodes-base.emailReadImap",
      "position": [
        0,
        0
      ],
      "parameters": {
        "options": {
          "customEmailConfig": "[\"UNSEEN\", [\"SUBJECT\", \"disk\"]]"
        }
      },
      "credentials": {
        "imap": {
          "id": "D3nLrSlP1dHWcIDE",
          "name": "IMAP account"
        }
      },
      "typeVersion": 2
    },
    {
      "id": "025c2c15-f693-4b53-8433-4d641526d11a",
      "name": "メールからのサーバーIP抽出",
      "type": "n8n-nodes-base.code",
      "position": [
        220,
        0
      ],
      "parameters": {
        "jsCode": "const subject = $input.first().json.subject;\n\nif (subject && (subject.toLowerCase().includes(\"disk-utilization\") || subject.toLowerCase().includes(\"disk utilization\"))) {\n  const ipMatch = subject.match(/(\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}):9100/);\n  const server_ip = ipMatch ? ipMatch[1] : '';\n  return [{ json: { server_ip } }];\n} else {\n  // Stop workflow if subject doesn't match\n  return [];\n}"
      },
      "typeVersion": 2
    },
    {
      "id": "723c7067-fe88-4b8b-b1ff-38c9eb662641",
      "name": "SSH変数の準備",
      "type": "n8n-nodes-base.set",
      "position": [
        440,
        0
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "49c16fb1-4b84-46a7-bb50-5e1fa7f59664",
              "name": "pwd",
              "type": "string",
              "value": "password"
            },
            {
              "id": "c16557bd-7ef6-4049-a634-a5b207a92fd6",
              "name": "server_user",
              "type": "string",
              "value": "user"
            },
            {
              "id": "fd8c4253-8ab2-4094-9a72-78ef782d89d3",
              "name": "server_ip",
              "type": "string",
              "value": "={{ $input.first().json.server_ip }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "7ef2b2b6-5880-4fc1-93fa-b76c3c75effa",
      "name": "SSH経由でのログクリーンアップコマンド実行",
      "type": "n8n-nodes-base.ssh",
      "position": [
        660,
        0
      ],
      "parameters": {
        "command": "=echo '{{ $json.pwd }}' | sudo -S su - jenkins -c \"ssh {{ $json.server_user }}@{{ $json.server_ip }} 'sudo rm -rf /var/log/*.gz && sudo rm -rf /var/log/*.1 && sudo rm -rf /var/log/nginx/*.log && sudo rm -rf /var/log/apache2/*.log && sudo journalctl --vacuum-size=200M && sudo apt-get clean && sudo apt-get autoclean && docker builder prune -af && docker system df && sudo apt-get autoremove -y'\""
      },
      "credentials": {
        "sshPassword": {
          "id": "e5pmM8y0fJOZytlE",
          "name": "Jenkins Server SSH"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "0935c618-237c-4630-9087-80b757a78a9c",
      "name": "付箋",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -20,
        -140
      ],
      "parameters": {
        "width": 160,
        "height": 300,
        "content": "Triggers when an alert email about disk usage is received.\n"
      },
      "typeVersion": 1
    },
    {
      "id": "d4efc5ab-9003-4d42-a49c-6ac4c376c9cb",
      "name": "付箋1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        180,
        -140
      ],
      "parameters": {
        "color": 3,
        "width": 170,
        "height": 300,
        "content": "Parses the email body to extract the target server's IP address.\n"
      },
      "typeVersion": 1
    },
    {
      "id": "adf3341f-4319-40cc-bf97-8917a2bb5c44",
      "name": "付箋2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        400,
        -140
      ],
      "parameters": {
        "color": 4,
        "width": 170,
        "height": 300,
        "content": "Manually set or map credentials, paths, or other config values.\n"
      },
      "typeVersion": 1
    },
    {
      "id": "4c933879-5907-4616-8902-42cfb2d73edc",
      "name": "付箋3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        620,
        -140
      ],
      "parameters": {
        "color": 6,
        "width": 170,
        "height": 300,
        "content": "Executes cleanup commands (Nginx, PM2, Docker, system logs).\n\n"
      },
      "typeVersion": 1
    }
  ],
  "active": false,
  "pinData": {},
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "fbb7d480-4bbd-4240-9e95-459b563adba4",
  "connections": {
    "723c7067-fe88-4b8b-b1ff-38c9eb662641": {
      "main": [
        [
          {
            "node": "7ef2b2b6-5880-4fc1-93fa-b76c3c75effa",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "8c1aac94-9e6a-4b14-a177-3a00644ea232": {
      "main": [
        [
          {
            "node": "025c2c15-f693-4b53-8433-4d641526d11a",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "025c2c15-f693-4b53-8433-4d641526d11a": {
      "main": [
        [
          {
            "node": "723c7067-fe88-4b8b-b1ff-38c9eb662641",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}