{
"nodes": [
{
"id": "ba168090-4727-4b72-a0cf-3f15ef3a9f17",
"name": "Send Email",
"type": "n8n-nodes-base.emailSend",
"position": [
580,
360
],
"parameters": {
"text": "=System resources are above the threshold.\n\nCPU: {{ $json.CPU.toNumber().round(2) }}%\nRAM: {{ $json.RAM.toNumber().round(2) }}%\nDisk: {{ $json.Disk.toNumber().round(2) }}%",
"options": [],
"subject": "System Resource Alert",
"toEmail": "change@me.com",
"fromEmail": "change@me.com"
},
"credentials": {
"smtp": {
"id": "EuaQtRc5t8pWPY9b",
"name": "SMTP account"
}
},
"typeVersion": 1
},
{
"id": "79afc30f-c3db-4ba1-8f0d-a1000b5e0abe",
"name": "Check RAM usage",
"type": "n8n-nodes-base.ssh",
"position": [
160,
40
],
"parameters": {
"command": "free | awk '\/Mem:\/ {printf \"%.2f\", (1 - $7\/$2) * 100}'"
},
"credentials": {
"sshPassword": {
"id": "VMCCUQkaq46q3CpB",
"name": "SSH Password account"
}
},
"executeOnce": false,
"typeVersion": 1
},
{
"id": "d09aa314-8d60-42a8-9933-d7e8d73e2c7d",
"name": "Check Disk usage",
"type": "n8n-nodes-base.ssh",
"position": [
380,
40
],
"parameters": {
"command": "df -h | awk '$NF==\"\/\"{printf \"%.2f\", $5}'"
},
"credentials": {
"sshPassword": {
"id": "VMCCUQkaq46q3CpB",
"name": "SSH Password account"
}
},
"executeOnce": false,
"typeVersion": 1
},
{
"id": "bc6a0df2-f4cc-484a-ac39-c92e8795175e",
"name": "Check CPU usage",
"type": "n8n-nodes-base.ssh",
"position": [
580,
40
],
"parameters": {
"command": "top -bn 1 | grep \"Cpu(s)\" | sed \"s\/.*, *\\([0-9.]*\\)%* id.*\/\\1\/\" | awk '{print 100 - $1}'"
},
"credentials": {
"sshPassword": {
"id": "VMCCUQkaq46q3CpB",
"name": "SSH Password account"
}
},
"executeOnce": false,
"typeVersion": 1
},
{
"id": "de0df734-1e4a-4bf0-9f7d-d60b52e06f48",
"name": "Merge check results",
"type": "n8n-nodes-base.merge",
"position": [
-40,
380
],
"parameters": {
"mode": "combineBySql",
"query": "SELECT input1.stdout as CPU, input2.stdout as Disk, input3.stdout as RAM FROM input1 LEFT JOIN input2 ON input1.name = input2.id LEFT JOIN input3 ON input1.name = input3.id",
"numberInputs": 3
},
"typeVersion": 3
},
{
"id": "7b7d6c0a-3f46-48b3-aa1d-191839540196",
"name": "Check results against thresholds",
"type": "n8n-nodes-base.if",
"position": [
240,
380
],
"parameters": {
"conditions": {
"number": [
{
"value1": "={{ $json.CPU }}",
"value2": 80,
"operation": "largerEqual"
},
{
"value1": "={{ $json.Disk }}",
"value2": 80,
"operation": "largerEqual"
},
{
"value1": "={{ $json.RAM }}",
"value2": 80,
"operation": "largerEqual"
}
]
},
"combineOperation": "any"
},
"typeVersion": 1
},
{
"id": "92331c38-cab8-4719-8746-6fb341954516",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
560,
260
],
"parameters": {
"width": 320,
"height": 280,
"content": "## Update email addresses\nUpdate From and To email addresses in this node to receive notifications"
},
"typeVersion": 1
},
{
"id": "3117fdbc-fde9-469b-bd47-59f45c349162",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-260,
-120
],
"parameters": {
"width": 320,
"height": 260,
"content": "## Check VPS resource usage every 15 minutes\nThis workflow checks VPS CPU, RAM and Disk usage every 15 minutes and if any of it exceeds 80% will inform you by email"
},
"typeVersion": 1
},
{
"id": "45b4c33a-8f02-4535-b67f-56d9d0aaf2ae",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
180,
260
],
"parameters": {
"width": 360,
"height": 280,
"content": "## Update threshold\nIf needed, you can increase\/decrease the 80% threshold in this node individually per resource "
},
"typeVersion": 1
},
{
"id": "0bf83ea8-b1c4-40f7-8a60-39f765e8ec2c",
"name": "Schedule Trigger",
"type": "n8n-nodes-base.scheduleTrigger",
"position": [
-40,
40
],
"parameters": {
"rule": {
"interval": [
{
"field": "minutes",
"minutesInterval": 15
}
]
}
},
"typeVersion": 1.1999999999999999555910790149937383830547332763671875
}
],
"pinData": [],
"connections": {
"Check CPU usage": {
"main": [
[
{
"node": "Merge check results",
"type": "main",
"index": 0
}
]
]
},
"Check RAM usage": {
"main": [
[
{
"node": "Check Disk usage",
"type": "main",
"index": 0
},
{
"node": "Merge check results",
"type": "main",
"index": 2
}
]
]
},
"Check Disk usage": {
"main": [
[
{
"node": "Check CPU usage",
"type": "main",
"index": 0
},
{
"node": "Merge check results",
"type": "main",
"index": 1
}
]
]
},
"Schedule Trigger": {
"main": [
[
{
"node": "Check RAM usage",
"type": "main",
"index": 0
}
]
]
},
"Merge check results": {
"main": [
[
{
"node": "Check results against thresholds",
"type": "main",
"index": 0
}
]
]
},
"Check results against thresholds": {
"main": [
[
{
"node": "Send Email",
"type": "main",
"index": 0
}
]
]
}
}
}
