The workflow JSON
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{
"name": "RHOAI Cluster Health Check",
"nodes": [
{
"parameters": {
"rule": {
"interval": [
{
"field": "hours",
"hoursInterval": 1
}
]
}
},
"id": "schedule-trigger",
"name": "Every Hour",
"type": "n8n-nodes-base.scheduleTrigger",
"typeVersion": 1.2,
"position": [
0,
0
]
},
{
"parameters": {},
"id": "manual-trigger",
"name": "Manual Test",
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [
0,
200
]
},
{
"parameters": {
"url": "https://qwen3-8b-fp8-dynamic-no-maas-0-test.apps.cluster-9tjvr.9tjvr.sandbox2001.opentlc.com/v1/models",
"options": {
"allowUnauthorizedCerts": true,
"timeout": 10000
}
},
"id": "check-model",
"name": "Check vLLM Model",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
300,
100
],
"onError": "continueErrorOutput"
},
{
"parameters": {
"url": "https://open-webui-open-webui.apps.cluster-9tjvr.9tjvr.sandbox2001.opentlc.com",
"options": {
"allowUnauthorizedCerts": true,
"timeout": 10000
}
},
"id": "check-webui",
"name": "Check Open WebUI",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
300,
300
],
"onError": "continueErrorOutput"
},
{
"parameters": {
"url": "https://evalhub.redhat-ods-applications.svc:8443/api/v1/health",
"options": {
"allowUnauthorizedCerts": true,
"timeout": 10000
}
},
"id": "check-evalhub",
"name": "Check EvalHub",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
300,
500
],
"onError": "continueErrorOutput"
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "ts",
"name": "timestamp",
"value": "={{ $now.toISO() }}",
"type": "string"
},
{
"id": "vllm",
"name": "vllm_status",
"value": "={{ $('Check vLLM Model').isExecuted ? ($('Check vLLM Model').first().json.data ? '\u2705 Healthy (' + $('Check vLLM Model').first().json.data.length + ' models)' : '\u274c DOWN') : '\u274c DOWN' }}",
"type": "string"
},
{
"id": "webui",
"name": "webui_status",
"value": "={{ $('Check Open WebUI').isExecuted ? '\u2705 Healthy' : '\u274c DOWN' }}",
"type": "string"
},
{
"id": "evalhub",
"name": "evalhub_status",
"value": "={{ $('Check EvalHub').isExecuted ? '\u2705 Healthy' : '\u274c DOWN' }}",
"type": "string"
},
{
"id": "summary",
"name": "summary",
"value": "=RHOAI Health Report ({{ $now.toISO() }})\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\n\ud83e\udd16 vLLM Model: {{ $('Check vLLM Model').isExecuted ? ($('Check vLLM Model').first().json.data ? '\u2705 Healthy' : '\u274c DOWN') : '\u274c DOWN' }}\n\ud83d\udda5\ufe0f Open WebUI: {{ $('Check Open WebUI').isExecuted ? '\u2705 Healthy' : '\u274c DOWN' }}\n\ud83d\udcca EvalHub: {{ $('Check EvalHub').isExecuted ? '\u2705 Healthy' : '\u274c DOWN' }}",
"type": "string"
}
]
},
"options": {}
},
"id": "build-report",
"name": "Build Health Report",
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
600,
100
]
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict"
},
"conditions": [
{
"id": "has-failure",
"leftValue": "={{ $json.summary }}",
"rightValue": "\u274c",
"operator": {
"type": "string",
"operation": "contains"
}
}
],
"combinator": "and"
},
"options": {}
},
"id": "check-failures",
"name": "Any Failures?",
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [
850,
100
]
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "alert",
"name": "alert",
"value": "=\u26a0\ufe0f ALERT: {{ $json.summary }}",
"type": "string"
}
]
},
"options": {}
},
"id": "alert-node",
"name": "\ud83d\udea8 Alert (Failure)",
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
1100,
0
]
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "ok",
"name": "status",
"value": "={{ $json.summary }}",
"type": "string"
}
]
},
"options": {}
},
"id": "all-ok-node",
"name": "\u2705 All Healthy",
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
1100,
200
]
}
],
"connections": {
"Every Hour": {
"main": [
[
{
"node": "Check vLLM Model",
"type": "main",
"index": 0
},
{
"node": "Check Open WebUI",
"type": "main",
"index": 0
},
{
"node": "Check EvalHub",
"type": "main",
"index": 0
}
]
]
},
"Manual Test": {
"main": [
[
{
"node": "Check vLLM Model",
"type": "main",
"index": 0
},
{
"node": "Check Open WebUI",
"type": "main",
"index": 0
},
{
"node": "Check EvalHub",
"type": "main",
"index": 0
}
]
]
},
"Check vLLM Model": {
"main": [
[
{
"node": "Build Health Report",
"type": "main",
"index": 0
}
],
[
{
"node": "Build Health Report",
"type": "main",
"index": 0
}
]
]
},
"Check Open WebUI": {
"main": [
[
{
"node": "Build Health Report",
"type": "main",
"index": 0
}
],
[
{
"node": "Build Health Report",
"type": "main",
"index": 0
}
]
]
},
"Check EvalHub": {
"main": [
[
{
"node": "Build Health Report",
"type": "main",
"index": 0
}
],
[
{
"node": "Build Health Report",
"type": "main",
"index": 0
}
]
]
},
"Build Health Report": {
"main": [
[
{
"node": "Any Failures?",
"type": "main",
"index": 0
}
]
]
},
"Any Failures?": {
"main": [
[
{
"node": "\ud83d\udea8 Alert (Failure)",
"type": "main",
"index": 0
}
],
[
{
"node": "\u2705 All Healthy",
"type": "main",
"index": 0
}
]
]
}
},
"settings": {
"executionOrder": "v1"
},
"tags": [
"rhoai",
"health-check",
"monitoring"
]
}
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About this workflow
RHOAI Cluster Health Check. Uses httpRequest. Scheduled trigger; 9 nodes.
Source: https://github.com/gymnatics/RHOAI-Toolkit/blob/3f292f1aaeaf46d0fdf1b51427d993546984ca8a/demo/n8n-demo/workflows/cluster-health-check.json — original creator credit. Request a take-down →
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