Nola — Librenms Alert Relay

The workflow JSON

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{
  "name": "nola \u2014 librenms alert relay",
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "nola-librenms-alert",
        "responseMode": "onReceived",
        "responseData": "firstEntryJson",
        "options": {}
      },
      "id": "webhook-librenms",
      "name": "LibreNMS Webhook",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "position": [
        220,
        300
      ]
    },
    {
      "parameters": {
        "jsCode": "const body = $input.first().json.body || $input.first().json;\n\n// LibreNMS alert payload fields\nconst title    = body.title    || body.rule    || 'Alert';\nconst host     = body.hostname || body.host    || 'unknown host';\nconst severity = body.severity || 'unknown';\nconst message  = body.message  || body.body    || '';\nconst state    = body.state;  // 1=alert, 0=recovery\n\nconst emoji    = state === 0 ? '\u2705' : (severity === 'critical' ? '\ud83d\udd34' : '\ud83d\udfe1');\nconst stateStr = state === 0 ? 'RESOLVED' : 'FIRING';\n\nconst discord_message = [\n  `${emoji} **LibreNMS ${stateStr}** \u2014 ${title}`,\n  `**Host:** ${host}`,\n  `**Severity:** ${severity}`,\n  message ? `**Detail:** ${message}` : null\n].filter(Boolean).join('\\n');\n\nreturn [{ json: { discord_message, severity, state } }];"
      },
      "id": "format-alert",
      "name": "Format Alert",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        440,
        300
      ]
    },
    {
      "parameters": {
        "method": "POST",
        "url": "={{ $env.DISCORD_WEBHOOK_URL }}",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "Content-Type",
              "value": "application/json"
            }
          ]
        },
        "sendBody": true,
        "bodyParameters": {
          "parameters": [
            {
              "name": "content",
              "value": "={{ $json.discord_message }}"
            }
          ]
        },
        "options": {}
      },
      "id": "post-discord",
      "name": "Post to Discord",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4,
      "position": [
        660,
        300
      ]
    }
  ],
  "connections": {
    "LibreNMS Webhook": {
      "main": [
        [
          {
            "node": "Format Alert",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Format Alert": {
      "main": [
        [
          {
            "node": "Post to Discord",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "tags": [
    "nola",
    "alert"
  ]
}

About this workflow

nola — librenms alert relay. Uses httpRequest. Webhook trigger; 3 nodes.

Source: https://github.com/iamgadgetman/nola/blob/b17506e0666ff53e431787eb563458b6afbea381/workflows/librenms-alert.json — original creator credit. Request a take-down →

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