Monitor Kubernetes services & pods with Prometheus and send alerts to Slack

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

Short Summary Proactively alert to service endpoint changes and pod/container issues (Pending, Not Ready, Restart spikes) using Prometheus metrics, formatted and sent to Slack. ️ Category DevO...

Best for

DevOps automation workflows
Multimodal AI automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.scheduletrigger, n8n-nodes-base.httprequest, n8n-nodes-base.code, n8n-nodes-base.stickynote, n8n-nodes-base.merge

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by John Pranay Kumar Reddy.

Original n8n.io source

1.1 Workflow description

Title: Monitor Kubernetes services & pods with Prometheus and send alerts to Slack
Workflow name: Monitor Kubernetes services & pods with Prometheus and send alerts to Slack

🧩 Short Summary

Proactively alert to service endpoint changes and pod/container issues (Pending, Not Ready, Restart spikes) using Prometheus metrics, formatted and sent to Slack.

🗂️ Category

DevOps / Monitoring & Observability

🏷️ Tags

kubernetes, prometheus, slack, alerting, sre, ops, kube-state-metrics

✅ Prerequisites

Prometheus scraping kube-state-metrics v2.x.
Slack App or Incoming Webhook (channel access).
n8n instance with outbound access to Prometheus & Slack.

🔑 Required Credentials in n8n

Slack: Bot OAuth (chat:write) or Incoming Webhook URL.

(Optional) Prometheus Basic Auth (if your Prometheus needs it).

🧠 What This Template Does

Detects pods stuck in Pending (scheduling problems like taints/affinity/capacity).
Detects containers Not Ready (readiness probe failures).
Detects container restart spikes over a sliding window (default 5 minutes).
Detects service discovery changes (endpoint count diffs current vs previous snapshot).
Sends clean, emoji-enhanced Slack alerts with pod/namespace/service context.
Outputs a 5-minute summary block to reduce noise.

📣 Slack Message Style (examples)

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - 🕒 Every 5 Min Trigger

Type / Role: n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices: Version 1.2

Block 2 - 📤 Send Alerts to Slack

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 3 - CrashLoopBackOff / Termination Reason

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 4 - Pod Restart Spike (last 5m)

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 5 - Normalization

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 6 - Slack formatter with summary

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 7 - Pods Running State

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 8 - Map Prometheus results into namespace/service

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 9 - Map Prometheus results into namespace/service1

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 10 - Normalization Node

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 11 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 12 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 13 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 14 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 15 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 16 - Sticky Note5

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 17 - Merge (endpoints)

Type / Role: n8n-nodes-base.merge - merge
Config choices: Version 3.2

Block 18 - Current endpoints

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 19 - Endpoints 5m ago

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 20 - Sticky Note6

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 21 - Sticky Note7

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 22 - Sticky Note8

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 23 - Sticky Note9

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 24 - Sticky Note10

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Showing the first 24 of 32 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow	Monitor Kubernetes services & pods with Prometheus and send alerts to Slack
Complexity	advanced
Nodes	32
Categories	DevOps, Multimodal AI
Author	John Pranay Kumar Reddy
Published	20 Aug 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/7665/7665.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source DevOps workflows Multimodal AI workflows

Frequently asked questions

What does Monitor Kubernetes services & pods with Prometheus and send alerts to Slack do?

Short Summary Proactively alert to service endpoint changes and pod/container issues (Pending, Not Ready, Restart spikes) using Prometheus metrics, formatted and sent to Slack. ️ Category DevO...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your DevOps, Multimodal AI use case.

John Pranay Kumar Reddy

4 workflows

Nodes

n8n-nodes-base.scheduletrigger n8n-nodes-base.httprequest n8n-nodes-base.code n8n-nodes-base.stickynote n8n-nodes-base.merge

Complexity

advanced

Published 20 Aug 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/7665/7665.json

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Monitor Kubernetes services & pods with Prometheus and send alerts to Slack

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

🧩 Short Summary

🗂️ Category

🏷️ Tags

✅ Prerequisites

🔑 Required Credentials in n8n

🧠 What This Template Does

📣 Slack Message Style (examples)

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - 🕒 Every 5 Min Trigger

Block 2 - 📤 Send Alerts to Slack

Block 3 - CrashLoopBackOff / Termination Reason

Block 4 - Pod Restart Spike (last 5m)

Block 5 - Normalization

Block 6 - Slack formatter with summary

Block 7 - Pods Running State

Block 8 - Map Prometheus results into namespace/service

Block 9 - Map Prometheus results into namespace/service1

Block 10 - Normalization Node

Block 11 - Sticky Note

Block 12 - Sticky Note1

Block 13 - Sticky Note2

Block 14 - Sticky Note3

Block 15 - Sticky Note4

Block 16 - Sticky Note5

Block 17 - Merge (endpoints)

Block 18 - Current endpoints

Block 19 - Endpoints 5m ago

Block 20 - Sticky Note6

Block 21 - Sticky Note7

Block 22 - Sticky Note8

Block 23 - Sticky Note9

Block 24 - Sticky Note10

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions