使用邮件审批和 SSH 自动化基于 Docker 的 n8n 更新
高级
这是一个DevOps领域的自动化工作流，包含 27 个节点。主要使用 If, Set, Ssh, EmailSend, HttpRequest 等节点。 使用邮件审批和 SSH 自动化基于 Docker 的 n8n 更新
前置要求
- •可能需要目标 API 的认证凭证
分类
工作流预览
可视化展示节点连接关系，支持缩放和平移
导出工作流
复制以下 JSON 配置到 n8n 导入，即可使用此工作流
{
"meta": {
"instanceId": "0cf1013c00750bfab7ca7f6a76bf0e8c2407d7a4a9a4e66c4888ec456837f043",
"templateCredsSetupCompleted": true
},
"nodes": [
{
"id": "6486fadd-3584-4544-9a02-57ede53e836b",
"name": "便签 1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-3456,
-448
],
"parameters": {
"color": 4,
"width": 280,
"height": 288,
"content": "## 🚀 工作流开始"
},
"typeVersion": 1
},
{
"id": "683461fc-856d-41e8-9d49-9b725fa3a2fa",
"name": "计划触发器",
"type": "n8n-nodes-base.scheduleTrigger",
"position": [
-3120,
-368
],
"parameters": {
"rule": {
"interval": [
{
"daysInterval": 3,
"triggerAtHour": 16
}
]
}
},
"typeVersion": 1.2
},
{
"id": "ab507d4a-1a4c-49de-9b32-07f60969b0e7",
"name": "如果无更改",
"type": "n8n-nodes-base.if",
"position": [
-2000,
-368
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "47b24202-69ea-481a-8848-67de206ea3c0",
"operator": {
"type": "boolean",
"operation": "false",
"singleValue": true
},
"leftValue": "={{ $json.update_available }}",
"rightValue": "=Download complete"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "bcdcdc19-e21c-48fb-80bb-014144c6fa6a",
"name": "检查更新脚本是否存在",
"type": "n8n-nodes-base.ssh",
"position": [
-1328,
-384
],
"parameters": {
"cwd": "/root",
"command": "=sh -c \"if [ -f update_docker.sh ]; then echo true; else echo false; fi\""
},
"credentials": {
"sshPassword": {
"id": "09btBw3BAMtH8hXO",
"name": "SSH Password account"
}
},
"typeVersion": 1
},
{
"id": "a9cbbad8-5f2f-411f-bc4a-62230e93c0e2",
"name": "如果文件存在",
"type": "n8n-nodes-base.if",
"position": [
-1104,
-384
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "1cf2c480-a309-46bc-a0c4-c2cf9827822d",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.stdout }}",
"rightValue": "true"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "ba972070-a78a-4982-975f-7219f26571e3",
"name": "创建更新脚本",
"type": "n8n-nodes-base.ssh",
"position": [
-880,
-304
],
"parameters": {
"cwd": "/root",
"command": "=sh -c \"printf '%s\\n' 'sleep 30s' 'cd /opt/n8n-docker-caddy' 'docker compose pull' 'docker compose down' 'docker compose up -d' > update_docker.sh; chmod +x update_docker.sh\""
},
"credentials": {
"sshPassword": {
"id": "09btBw3BAMtH8hXO",
"name": "SSH Password account"
}
},
"typeVersion": 1
},
{
"id": "12f9fcab-8bcb-4bea-8e66-69f5227fb7bf",
"name": "如果已批准",
"type": "n8n-nodes-base.if",
"position": [
-1552,
-272
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "32c6b0f0-0747-47de-90e4-56ded46d3d34",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
},
"leftValue": "={{ $json.data.approved }}",
"rightValue": "true"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "f3a6c807-0f12-45b6-bed7-ce4cbda4e42b",
"name": "无更新",
"type": "n8n-nodes-base.noOp",
"position": [
-1776,
-464
],
"parameters": {},
"typeVersion": 1
},
{
"id": "3a90a6d9-b1b1-4f9b-8194-676dccbdb5a5",
"name": "不执行任何操作",
"type": "n8n-nodes-base.noOp",
"position": [
-1328,
-160
],
"parameters": {},
"typeVersion": 1
},
{
"id": "c1dbc70c-db44-4f5c-9854-64d34d9f114f",
"name": "请求批准更新",
"type": "n8n-nodes-base.emailSend",
"position": [
-1776,
-272
],
"webhookId": "c1c2c77a-a3c1-4c4d-83e9-229dfc3b0903",
"parameters": {
"message": "=<h2>🔔 n8n Update Available</h2>\n\n<p>A new version of n8n is available on Docker Hub!</p>\n\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\">\n <tr style=\"background-color: #f8f9fa;\">\n <td style=\"padding: 12px; border: 1px solid #dee2e6; font-weight: bold;\">Current Version:</td>\n <td style=\"padding: 12px; border: 1px solid #dee2e6;\">{{ $json.current_version }}</td>\n </tr>\n <tr>\n <td style=\"padding: 12px; border: 1px solid #dee2e6; font-weight: bold;\">New Version Available:</td>\n <td style=\"padding: 12px; border: 1px solid #dee2e6; color: #28a745; font-weight: bold;\">Latest from Docker Hub</td>\n </tr>\n <tr style=\"background-color: #f8f9fa;\">\n <td style=\"padding: 12px; border: 1px solid #dee2e6; font-weight: bold;\">Local Digest:</td>\n <td style=\"padding: 12px; border: 1px solid #dee2e6; font-family: monospace; font-size: 11px;\">{{ $json.local_digest }}</td>\n </tr>\n <tr>\n <td style=\"padding: 12px; border: 1px solid #dee2e6; font-weight: bold;\">Remote Digest:</td>\n <td style=\"padding: 12px; border: 1px solid #dee2e6; font-family: monospace; font-size: 11px;\">{{ $json.remote_digest }}</td>\n </tr>\n</table>\n\n<h3>📋 What happens if you approve?</h3>\n<ol>\n <li>Pull the new n8n Docker image from Docker Hub</li>\n <li>Restart the n8n container with the new version</li>\n</ol>\n\n<h3>🔧 Manual Update Option</h3>\n<p>If you prefer to update manually later, run these commands on your server:</p>\n<pre style=\"background-color: #f8f8f8; padding: 10px; border-radius: 4px; border: 1px solid #ddd;\">\ncd /opt/n8n-docker-caddy\ndocker compose pull\ndocker compose down\ndocker compose up -d\n</pre>\n\n<p><strong>Do you want to proceed with the automatic update?</strong></p>",
"options": {
"limitWaitTime": {
"values": {
"resumeAmount": 3
}
},
"appendAttribution": false
},
"subject": "Approval Required for Updating n8n!",
"toEmail": "youremail@yourdomain.com",
"fromEmail": "info@yourdomain.com",
"operation": "sendAndWait",
"approvalOptions": {
"values": {
"approvalType": "double"
}
}
},
"credentials": {
"smtp": {
"id": "7qY1U0ZUdM7HKciv",
"name": "SMTP account"
}
},
"typeVersion": 2.1
},
{
"id": "0829b238-0c14-4be8-bbf1-edaa63016b51",
"name": "便签 - 自动更新",
"type": "n8n-nodes-base.stickyNote",
"position": [
-992,
-112
],
"parameters": {
"color": 6,
"width": 320,
"height": 432,
"content": "## 🔧 自动化更新流程"
},
"typeVersion": 1
},
{
"id": "c68450b6-ff97-4be4-932f-42dbabdab811",
"name": "便签 - 脚本逻辑",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1392,
-672
],
"parameters": {
"color": 7,
"width": 280,
"height": 248,
"content": "## 🎯 脚本逻辑"
},
"typeVersion": 1
},
{
"id": "277ab82a-701a-4edc-8def-1dab9165ebe2",
"name": "便签 - 最终执行",
"type": "n8n-nodes-base.stickyNote",
"position": [
-976,
-752
],
"parameters": {
"color": 3,
"width": 320,
"height": 328,
"content": "## 🚀 最终执行"
},
"typeVersion": 1
},
{
"id": "5a44fe76-5ca3-4477-9f5d-486c8abec4ab",
"name": "执行更新脚本",
"type": "n8n-nodes-base.ssh",
"position": [
-656,
-400
],
"parameters": {
"cwd": "/root",
"command": "=sh -c \"exec >/root/update.log 2>&1; nohup /root/update_docker.sh &\""
},
"credentials": {
"sshPassword": {
"id": "09btBw3BAMtH8hXO",
"name": "SSH Password account"
}
},
"typeVersion": 1
},
{
"id": "9a65a79e-eb2e-4ad2-8920-fe6a4a8053c6",
"name": "便签",
"type": "n8n-nodes-base.stickyNote",
"position": [
-3536,
-928
],
"parameters": {
"color": 5,
"width": 3104,
"height": 1520,
"content": "# n8n 自更新器"
},
"typeVersion": 1
},
{
"id": "9b195a5d-3057-4690-9a7f-63947349df7b",
"name": "获取本地镜像摘要",
"type": "n8n-nodes-base.ssh",
"position": [
-2672,
-368
],
"parameters": {
"cwd": "/root",
"command": "sh -c \"docker inspect n8n-docker-caddy-n8n-1 --format='{{index .Image}}' | xargs docker inspect --format='{{index .RepoDigests 0}}'\""
},
"credentials": {
"sshPassword": {
"id": "09btBw3BAMtH8hXO",
"name": "SSH Password account"
}
},
"typeVersion": 1
},
{
"id": "9f46efa6-bfa4-43cc-bc8b-50f4789bfc3f",
"name": "获取远程镜像摘要",
"type": "n8n-nodes-base.httpRequest",
"position": [
-2448,
-368
],
"parameters": {
"url": "https://hub.docker.com/v2/repositories/n8nio/n8n/tags/latest",
"options": {}
},
"typeVersion": 4.2
},
{
"id": "b06e54b7-3760-46b6-b35b-95f74ea19ada",
"name": "便利贴 9",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2224,
-672
],
"parameters": {
"width": 320,
"height": 264,
"content": "## 🔀 更新检查"
},
"typeVersion": 1
},
{
"id": "ef630305-91e7-4d78-9a8d-a2729063ddb0",
"name": "准备更新数据",
"type": "n8n-nodes-base.set",
"position": [
-2224,
-368
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "832662b6-8fe8-4849-870b-71d32bf88a46",
"name": "current_version",
"type": "string",
"value": "={{ $('Get Current n8n Version').first().json.stdout }}"
},
{
"id": "local-digest-assign",
"name": "local_digest",
"type": "string",
"value": "={{ $('Get Local Image Digest').first().json.stdout.split('@')[1] }}"
},
{
"id": "remote-digest-assign",
"name": "remote_digest",
"type": "string",
"value": "={{ $('Get Remote Image Digest').first().json.digest }}"
},
{
"id": "new-version-assign",
"name": "update_available",
"type": "boolean",
"value": "={{ $('Get Local Image Digest').first().json.stdout.split('@')[1] !== $('Get Remote Image Digest').first().json.digest }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "71409d64-8391-4f08-8359-223728303c20",
"name": "便签",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1840,
-736
],
"parameters": {
"color": 4,
"width": 320,
"height": 224,
"content": "## ⛔ 未找到更新"
},
"typeVersion": 1
},
{
"id": "1c01f1f9-5c06-41fd-a130-44c43f9a5c11",
"name": "便签 2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2864,
-656
],
"parameters": {
"color": 5,
"width": 280,
"height": 248,
"content": "## 🔍 获取当前信息"
},
"typeVersion": 1
},
{
"id": "09ef5f83-d20d-489f-9199-aa1ce267427b",
"name": "便签 4",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2528,
-144
],
"parameters": {
"color": 6,
"width": 280,
"height": 236,
"content": "## 🔎 检查远程摘要"
},
"typeVersion": 1
},
{
"id": "0aaada39-31ce-49b8-8526-b22264de5092",
"name": "获取当前 n8n 版本",
"type": "n8n-nodes-base.ssh",
"position": [
-2896,
-368
],
"parameters": {
"cwd": "/root",
"command": "=sh -c \"docker exec n8n-docker-caddy-n8n-1 n8n --version\""
},
"credentials": {
"sshPassword": {
"id": "09btBw3BAMtH8hXO",
"name": "SSH Password account"
}
},
"typeVersion": 1
},
{
"id": "9982be9b-af55-4364-a29a-d70dca2af86e",
"name": "便利贴 5",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1888,
-64
],
"parameters": {
"color": 3,
"width": 320,
"height": 232,
"content": "## 📧 批准请求"
},
"typeVersion": 1
},
{
"id": "4cf50320-6d4a-4af1-ac91-941f8f2c7851",
"name": "便签 - 已拒绝1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1408,
0
],
"parameters": {
"color": 4,
"width": 280,
"height": 248,
"content": "## 🛑 更新已拒绝"
},
"typeVersion": 1
},
{
"id": "69673ede-0abc-43ec-86ea-5ae72a6289d2",
"name": "便利贴 6",
"type": "n8n-nodes-base.stickyNote",
"position": [
-4080,
-160
],
"parameters": {
"color": 2,
"width": 496,
"height": 408,
"content": "## 📊 工作流摘要"
},
"typeVersion": 1
},
{
"id": "b1613e0c-a14f-4903-96c3-dedd46423a25",
"name": "设置要求",
"type": "n8n-nodes-base.stickyNote",
"position": [
-4080,
-928
],
"parameters": {
"width": 500,
"height": 704,
"content": "## 🧩 设置要求"
},
"typeVersion": 1
}
],
"pinData": {},
"connections": {
"If Approved": {
"main": [
[
{
"node": "Check Existence of Update Script",
"type": "main",
"index": 0
}
],
[
{
"node": "Do Nothing",
"type": "main",
"index": 0
}
]
]
},
"If No Changes": {
"main": [
[
{
"node": "No Updates",
"type": "main",
"index": 0
}
],
[
{
"node": "Ask For Approval to Update",
"type": "main",
"index": 0
}
]
]
},
"If File Exists": {
"main": [
[
{
"node": "Execute Update Script",
"type": "main",
"index": 0
}
],
[
{
"node": "Create Update Script",
"type": "main",
"index": 0
}
]
]
},
"Schedule Trigger": {
"main": [
[
{
"node": "Get Current n8n Version",
"type": "main",
"index": 0
}
]
]
},
"Prepare Update Data": {
"main": [
[
{
"node": "If No Changes",
"type": "main",
"index": 0
}
]
]
},
"Create Update Script": {
"main": [
[
{
"node": "Execute Update Script",
"type": "main",
"index": 0
}
]
]
},
"Get Local Image Digest": {
"main": [
[
{
"node": "Get Remote Image Digest",
"type": "main",
"index": 0
}
]
]
},
"Get Current n8n Version": {
"main": [
[
{
"node": "Get Local Image Digest",
"type": "main",
"index": 0
}
]
]
},
"Get Remote Image Digest": {
"main": [
[
{
"node": "Prepare Update Data",
"type": "main",
"index": 0
}
]
]
},
"Ask For Approval to Update": {
"main": [
[
{
"node": "If Approved",
"type": "main",
"index": 0
}
]
]
},
"Check Existence of Update Script": {
"main": [
[
{
"node": "If File Exists",
"type": "main",
"index": 0
}
]
]
}
}
}常见问题
如何使用这个工作流？
复制上方的 JSON 配置代码，在您的 n8n 实例中创建新工作流并选择「从 JSON 导入」，粘贴配置后根据需要修改凭证设置即可。
这个工作流适合什么场景？
高级 - 开发运维
需要付费吗？
本工作流完全免费，您可以直接导入使用。但请注意，工作流中使用的第三方服务（如 OpenAI API）可能需要您自行付费。
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