Getting Started

Prerequisites

  • Go 1.20+
  • Docker 20.10+ (optional)
  • Slack workspace (for Slack notifications)

Easy Installation with Docker

docker run -p 3000:3000 \
  -e SLACK_ENABLE=true \
  -e SLACK_TOKEN=your_token \
  -e SLACK_CHANNEL_ID=your_channel \
  ghcr.io/versuscontrol/versus-incident

Or Build from source

# Clone the repository
git clone https://github.com/VersusControl/versus-incident.git
cd versus-incident

# Build with Go
go build -o versus-incident ./cmd/main.go
chmod +x versus-incident

Create run.sh:

#!/bin/bash
export SLACK_ENABLE=true
export SLACK_TOKEN=your_token
export SLACK_CHANNEL_ID=your_channel

./versus-incident

Development

Docker

Create a configuration file:

mkdir -p ./config && touch config.yaml

config.yaml:

name: versus
host: 0.0.0.0
port: 3000

alert:
  slack:
    enable: true
    token: ${SLACK_TOKEN}
    channel_id: ${SLACK_CHANNEL_ID}
    template_path: "/app/config/slack_message.tmpl"

  telegram:
    enable: false

  msteams:
    enable: false

Configuration Notes

Ensure template_path in config.yaml matches container path:

alert:
  slack:
    template_path: "/app/config/slack_message.tmpl" # For containerized env

Slack Template

Create your Slack message template, for example config/slack_message.tmpl:

🔥 *Critical Error in {{.ServiceName}}*

❌ Error Details:
```{{.Logs}}```

Owner <@{{.UserID}}> please investigate

Run with volume mount:

docker run -d \
  -p 3000:3000 \
  -v $(pwd)/config:/app/config \
  -e SLACK_ENABLE=true \
  -e SLACK_TOKEN=your_slack_token \
  -e SLACK_CHANNEL_ID=your_channel_id \
  --name versus \
  ghcr.io/versuscontrol/versus-incident

To test, simply send an incident to Versus:

curl -X POST http://localhost:3000/api/incidents \
  -H "Content-Type: application/json" \
  -d '{
    "Logs": "[ERROR] This is an error log from User Service that we can obtain using Fluent Bit.",
    "ServiceName": "order-service",
    "UserID": "SLACK_USER_ID"
  }'

Response:

{
    "status":"Incident created"
}

Result:

Slack Alert

Other Templates

Telegram Template

For Telegram, you can use HTML formatting. Create your Telegram message template, for example config/telegram_message.tmpl:

🚨 <b>Critical Error Detected!</b> 🚨
📌 <b>Service:</b> {{.ServiceName}}
⚠️ <b>Error Details:</b>
{{.Logs}}

This template will be parsed with HTML tags when sending the alert to Telegram.

Email Template

Create your email message template, for example config/email_message.tmpl:

Subject: Critical Error Alert - {{.ServiceName}}

Critical Error Detected in {{.ServiceName}}
----------------------------------------

Error Details:
{{.Logs}}

Please investigate this issue immediately.

Best regards,
Versus Incident Management System

This template supports both plain text and HTML formatting for email notifications.

Microsoft Teams Template

Create your Teams message template, for example config/msteams_message.tmpl:

**Critical Error in {{.ServiceName}}**
 
**Error Details:**

```{{.Logs}}```

Please investigate immediately

Kubernetes

  1. Create a secret for Slack:
# Create secret
kubectl create secret generic versus-secrets \
  --from-literal=slack_token=$SLACK_TOKEN \
  --from-literal=slack_channel_id=$SLACK_CHANNEL_ID
  1. Create ConfigMap for config and template file, for example versus-config.yaml:
apiVersion: v1
kind: ConfigMap
metadata:
  name: versus-config
data:
  config.yaml: |
    name: versus
    host: 0.0.0.0
    port: 3000

    alert:
      slack:
        enable: true
        token: ${SLACK_TOKEN}
        channel_id: ${SLACK_CHANNEL_ID}
        template_path: "/app/config/slack_message.tmpl"

      telegram:
        enable: false

  slack_message.tmpl: |
    *Critical Error in {{.ServiceName}}*
    ----------
    Error Details:
    ```
    {{.Logs}}
    ```
    ----------
    Owner <@{{.UserID}}> please investigate


kubectl apply -f versus-config.yaml
  1. Create versus-deployment.yaml:
apiVersion: apps/v1
kind: Deployment
metadata:
  name: versus-incident
spec:
  replicas: 2
  selector:
    matchLabels:
      app: versus-incident
  template:
    metadata:
      labels:
        app: versus-incident
    spec:
      containers:
      - name: versus-incident
        image: ghcr.io/versuscontrol/versus-incident
        ports:
        - containerPort: 3000
        livenessProbe:
          httpGet:
            path: /healthz
            port: 3000
        env:
          - name: SLACK_CHANNEL_ID
            valueFrom:
              secretKeyRef:
                name: versus-secrets
                key: slack_channel_id
          - name: SLACK_TOKEN
            valueFrom:
              secretKeyRef:
                name: versus-secrets
                key: slack_token
        volumeMounts:
        - name: versus-config
          mountPath: /app/config/config.yaml
          subPath: config.yaml
        - name: versus-config
          mountPath: /app/config/slack_message.tmpl
          subPath: slack_message.tmpl
      volumes:
      - name: versus-config
        configMap:
          name: versus-config

---
apiVersion: v1
kind: Service
metadata:
  name: versus-service
spec:
  selector:
    app: versus
  ports:
    - protocol: TCP
      port: 3000
      targetPort: 3000
  1. Apply:
kubectl apply -f versus-deployment.yaml

SNS Usage

docker run -d \
  -p 3000:3000 \
  -e SLACK_ENABLE=true \
  -e SLACK_TOKEN=your_slack_token \
  -e SLACK_CHANNEL_ID=your_channel_id \
  -e SNS_ENABLE=true \
  -e SNS_TOPIC_ARN=$SNS_TOPIC_ARN \
  -e SNS_HTTPS_ENDPOINT_SUBSCRIPTION=https://your-domain.com \
  -e AWS_ACCESS_KEY_ID=$AWS_ACCESS_KEY \
  -e AWS_SECRET_ACCESS_KEY=$AWS_SECRET_KEY \
  --name versus \
  ghcr.io/versuscontrol/versus-incident

Send test message using AWS CLI:

aws sns publish \
  --topic-arn $SNS_TOPIC_ARN \
  --message '{"ServiceName":"test-service","Logs":"[ERROR] Test error","UserID":"U12345"}' \
  --region $AWS_REGION

A key real-world application of Amazon SNS involves integrating it with CloudWatch Alarms. This allows CloudWatch to publish messages to an SNS topic when an alarm state changes (e.g., from OK to ALARM), which can then trigger notifications to Slack, Telegram, or Email via Versus Incident with a custom template.

On-call

Currently, Versus support On-call integrations with AWS Incident Manager. Updated configuration example with on-call features:

name: versus
host: 0.0.0.0
port: 3000
public_host: https://your-ack-host.example # Required for on-call ack

# ... existing alert configurations ...

oncall:
  ### Enable overriding using query parameters
  # /api/incidents?oncall_enable=false => Set to `true` or `false` to enable or disable on-call for a specific alert
  # /api/incidents?oncall_wait_minutes=0 => Set the number of minutes to wait for acknowledgment before triggering on-call. Set to `0` to trigger immediately
  enable: false
  wait_minutes: 3 # If you set it to 0, it means there’s no need to check for an acknowledgment, and the on-call will trigger immediately

  aws_incident_manager:
    response_plan_arn: ${AWS_INCIDENT_MANAGER_RESPONSE_PLAN_ARN}

redis: # Required for on-call functionality
  insecure_skip_verify: true # dev only
  host: ${REDIS_HOST}
  port: ${REDIS_PORT}
  password: ${REDIS_PASSWORD}
  db: 0

Explanation:

The oncall section includes:

  1. enable: A boolean to toggle on-call functionality (default: false).
  2. wait_minutes: Time in minutes to wait for an acknowledgment before escalating (default: 3). Setting it to 0 triggers the on-call immediately.
  3. aws_incident_manager: Contains the response_plan_arn, which links to an AWS Incident Manager response plan via an environment variable.

The redis section is required when oncall.enable is true. It configures the Redis instance used for state management or queuing, with settings like host, port, password, and db.

For detailed information on integration, please refer to the document here: On-call setup with Versus.