System Monitoring and Auto-Recovery

1.1 Overview

This section details the System Monitoring and Auto-Recovery mechanisms within the CapsureLabs platform. These mechanisms ensure continuous availability, timely incident detection, and automated recovery actions to maintain platform resilience and user satisfaction

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1.2 Objectives of System Monitoring and Auto-Recovery

Real-Time System Health Monitoring

Track performance, detect anomalies, and capture metrics for real-time status visibility.

Automated Incident Response

Alerting and Notification

Self-Healing

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1.3 Tools for System Monitoring and Auto-Recovery

Prometheus

A monitoring and alerting toolkit used to collect metrics and generate alerts.

Grafana

ELK

AWS CloudWatch / Google Stackdriver

Kubernetes Health Checks

Ansible / Terraform

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1.4 Monitoring Code (Prometheus and Grafana)

# prometheus.yml
global:
  scrape_interval: 15s

scrape_configs:
  - job_name: 'capsurelabs_app'
    static_configs:
      - targets: ['localhost:8080']

alerting:
  alertmanagers:
    - static_configs:
        - targets: ['localhost:9093']

rule_files:
  - "alert_rules.yml"

# alert_rules.yml
groups:
  - name: cpu_alert
    rules:
      - alert: HighCPUUsage
        expr: avg(rate(container_cpu_usage_seconds_total[5m])) > 0.8
        for: 5m
        labels:
          severity: "critical"
        annotations:
          summary: "High CPU Usage Detected"
          description: "CPU usage is above 80% for the past 5 minutes."

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1.5 Auto-Recovery Mechanisms

1.5.1 Kubernetes Liveness and Readiness Probes

# deployment.yaml
spec:
  containers:
    - name: capsurelabs-service
      image: capsurelabs/service-image:latest
      livenessProbe:
        httpGet:
          path: /healthz
          port: 8080
        initialDelaySeconds: 5
        periodSeconds: 10
      readinessProbe:
        httpGet:
          path: /readiness
          port: 8080
        initialDelaySeconds: 5
        periodSeconds: 10

1.5.2 Ansible for Automated Recovery

# ansible-playbook.yml
- name: Recover Database
  hosts: database_servers
  tasks:
    - name: Check Database Health
      command: "pg_isready"
      register: db_status
      ignore_errors: yes

    - name: Restart Database
      service:
        name: postgresql
        state: restarted
      when: db_status.rc != 0

1.5.3 AWS Auto-Recovery for EC2 Instances

{
  "AlarmName": "Instance-HealthCheck-Failure",
  "AlarmDescription": "Triggers recovery if instance is unhealthy",
  "AWSAccountId": "YOUR_AWS_ACCOUNT_ID",
  "MetricName": "StatusCheckFailed",
  "Namespace": "AWS/EC2",
  "Statistic": "Average",
  "Period": 300,
  "EvaluationPeriods": 2,
  "Threshold": 1,
  "ComparisonOperator": "GreaterThanOrEqualToThreshold",
  "ActionsEnabled": true,
  "AlarmActions": [
    "arn:aws:automate:YOUR_REGION:ec2:recover"
  ],
  "Dimensions": [
    {
      "Name": "InstanceId",
      "Value": "YOUR_INSTANCE_ID"
    }
  ]
}