{ "name": "n8n Self-Health Monitor v1.0", "active": true, "isArchived": false, "nodes": [ { "parameters": { "rule": { "interval": [ { "field": "minutes", "minutesInterval": 15 } ] } }, "id": "dabcb0ae-d513-410e-b779-4570df5c4a35", "name": "Every 15 Minutes", "type": "n8n-nodes-base.scheduleTrigger", "typeVersion": 1.2, "position": [ 0, 0 ] }, { "parameters": { "method": "GET", "url": "http://10.5.30.6:5678/api/v1/executions", "sendHeaders": true, "headerParameters": { "parameters": [ { "name": "X-N8N-API-KEY", "value": "={{ $env.N8N_API_KEY }}" } ] }, "sendQuery": true, "queryParameters": { "parameters": [ { "name": "status", "value": "error" }, { "name": "includeData", "value": "false" }, { "name": "limit", "value": "50" } ] }, "options": {} }, "id": "806d75e9-b95a-499a-b997-a7f7dc046775", "name": "Fetch Failed Executions", "type": "n8n-nodes-base.httpRequest", "typeVersion": 4.2, "position": [ 224, 0 ] }, { "parameters": { "jsCode": "const data = $input.first().json;\nconst executions = data.data || [];\nconst oneHourAgo = Date.now() - (60 * 60 * 1000);\n\n// Filter to failures in the past hour\nconst recent = executions.filter(e => {\n const ts = new Date(e.startedAt || e.stoppedAt || 0).getTime();\n return ts >= oneHourAgo;\n});\n\n// Group by workflow name + error message for dedup key\nconst failures = recent.map(e => ({\n executionId: e.id,\n workflowId: e.workflowId,\n workflowName: e.workflowData?.name || `Workflow ${e.workflowId}`,\n startedAt: e.startedAt,\n stoppedAt: e.stoppedAt,\n errorMessage: e.data?.resultData?.error?.message || 'Unknown error'\n}));\n\n// Deduplicate by workflowName (report once per workflow per check)\nconst seen = new Set();\nconst unique = failures.filter(f => {\n if (seen.has(f.workflowName)) return false;\n seen.add(f.workflowName);\n return true;\n});\n\nreturn [{ json: { hasFailures: unique.length > 0, count: unique.length, failures: unique } }];" }, "id": "f5d47910-5047-4c4f-aa84-a6907aa38551", "name": "Filter Recent Failures", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 448, 0 ] }, { "parameters": { "conditions": { "options": { "caseSensitive": true, "leftValue": "", "typeValidation": "strict" }, "conditions": [ { "id": "a76d10a7-1313-467e-9648-471b296229a3", "leftValue": "={{ $json.hasFailures }}", "rightValue": true, "operator": { "type": "boolean", "operation": "equal" } } ], "combinator": "and" } }, "id": "7c298433-ab89-435e-8955-73da6b986f46", "name": "Has Failures?", "type": "n8n-nodes-base.if", "typeVersion": 2.2, "position": [ 672, 0 ] }, { "parameters": { "jsCode": "const d = $input.first().json;\n// Fingerprint = sorted workflow names joined \u2014 stable across retriggers\nconst fingerprint = (d.failures || [])\n .map(f => f.workflowName)\n .sort()\n .join('|') || 'unknown';\nreturn [{ json: { ...d, fingerprint } }];" }, "id": "d3609d45-ba9f-41d3-a9bd-8c558a719f10", "name": "Build Fingerprint", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 896, -120 ] }, { "parameters": { "operation": "executeQuery", "query": "SELECT fingerprint, last_seen FROM n8n_health_dedup WHERE fingerprint = '{{ $json.fingerprint }}' AND last_seen > NOW() - INTERVAL '1 hour' LIMIT 1;", "options": {} }, "id": "15a3dd71-bc5b-4396-9534-63518e097438", "name": "Lookup Dedup", "type": "n8n-nodes-base.postgres", "typeVersion": 2.5, "position": [ 1120, -120 ], "credentials": { "postgres": { "id": "n9svoXemqSZoNNUB", "name": "Postgres account" } }, "continueOnFail": true }, { "parameters": { "jsCode": "const alertData = $('Build Fingerprint').first().json;\nconst rows = $input.all().filter(r => r.json && r.json.fingerprint);\nconst alreadyNotified = rows.length > 0;\nreturn [{ json: { ...alertData, alreadyNotified, shouldNotify: !alreadyNotified } }];" }, "id": "a92590e3-7044-4ba3-9b39-f6a9457c5fbe", "name": "Check Already Notified", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 1344, -120 ] }, { "parameters": { "conditions": { "options": { "caseSensitive": true, "leftValue": "", "typeValidation": "strict" }, "conditions": [ { "id": "b1e77af5-6875-47dd-97af-8e13958a7217", "leftValue": "={{ $json.shouldNotify }}", "rightValue": true, "operator": { "type": "boolean", "operation": "equal" } } ], "combinator": "and" } }, "id": "39ac0eaf-73ce-4fe1-9c4b-d09ac920291d", "name": "Should Notify?", "type": "n8n-nodes-base.if", "typeVersion": 2.2, "position": [ 1568, -120 ] }, { "parameters": { "operation": "executeQuery", "query": "INSERT INTO n8n_health_dedup (fingerprint, last_seen, workflow_names) VALUES ('{{ $json.fingerprint }}', NOW(), '{{ $json.failures.map(f => f.workflowName).join(\", \") }}') ON CONFLICT (fingerprint) DO UPDATE SET last_seen = NOW(), workflow_names = EXCLUDED.workflow_names;", "options": {} }, "id": "0c3be155-0c3a-4354-b863-73a3f5bbf598", "name": "Upsert Dedup Record", "type": "n8n-nodes-base.postgres", "typeVersion": 2.5, "position": [ 1792, -120 ], "credentials": { "postgres": { "id": "n9svoXemqSZoNNUB", "name": "Postgres account" } } }, { "parameters": { "jsCode": "const d = $('Build Fingerprint').first().json;\nconst lines = (d.failures || []).map(f =>\n ` \u2022 ${f.workflowName}\\n ${f.errorMessage.substring(0, 120)}`\n);\nconst body = `${d.count} workflow${d.count !== 1 ? 's' : ''} failed in the past hour:\\n\\n${lines.join('\\n')}\\n\\nhttps://n8n.paccoco.com`;\nreturn [{ json: { title: `\u26a0\ufe0f n8n: ${d.count} Workflow Failure${d.count !== 1 ? 's' : ''}`, message: body, priority: 7 } }];" }, "id": "1c6b42bf-a38e-47b6-82ac-50c43ee9e583", "name": "Format Notification", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 2016, -120 ] }, { "parameters": { "message": "={{ $json.message }}", "additionalFields": { "priority": "={{ $json.priority }}", "title": "={{ $json.title }}" }, "options": { "contentType": "text/plain" } }, "id": "09435c2f-9044-432a-8ca8-dd3ce3262c76", "name": "Push to Gotify", "type": "n8n-nodes-base.gotify", "typeVersion": 1, "position": [ 2240, -120 ], "credentials": { "gotifyApi": { "id": "SETUP_REQUIRED", "name": "n8n Health" } } } ], "connections": { "Every 15 Minutes": { "main": [ [ { "node": "Fetch Failed Executions", "type": "main", "index": 0 } ] ] }, "Fetch Failed Executions": { "main": [ [ { "node": "Filter Recent Failures", "type": "main", "index": 0 } ] ] }, "Filter Recent Failures": { "main": [ [ { "node": "Has Failures?", "type": "main", "index": 0 } ] ] }, "Has Failures?": { "main": [ [ { "node": "Build Fingerprint", "type": "main", "index": 0 } ], [] ] }, "Build Fingerprint": { "main": [ [ { "node": "Lookup Dedup", "type": "main", "index": 0 } ] ] }, "Lookup Dedup": { "main": [ [ { "node": "Check Already Notified", "type": "main", "index": 0 } ] ] }, "Check Already Notified": { "main": [ [ { "node": "Should Notify?", "type": "main", "index": 0 } ] ] }, "Should Notify?": { "main": [ [ { "node": "Upsert Dedup Record", "type": "main", "index": 0 } ], [] ] }, "Upsert Dedup Record": { "main": [ [ { "node": "Format Notification", "type": "main", "index": 0 } ] ] }, "Format Notification": { "main": [ [ { "node": "Push to Gotify", "type": "main", "index": 0 } ] ] } }, "settings": { "executionOrder": "v1", "binaryMode": "separate" }, "staticData": null, "meta": null, "pinData": {}, "tags": [ { "name": "monitoring" }, { "name": "scheduled" }, { "name": "n8n" } ] }