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System Maintenance

Maintenance Schedule​

Update Process​

System Updates​

Kubernetes Updates​

update_procedure:
  pre_update:
    - backup_etcd
    - drain_nodes
    - verify_resources

  update_steps:
    - update_control_plane:
        order:
          - backup_state
          - update_components
          - verify_health
    
    - update_workers:
        strategy: rolling
        batch_size: 25%
        max_unavailable: 1

  post_update:
    - verify_cluster_health
    - run_conformance_tests
    - update_documentation

Database Maintenance​

Database Maintenance Tasks​

maintenance_tasks:
  daily:
    - name: Update Statistics
      schedule: "0 0 * * *"
      duration: 30m
      impact: Low

    - name: Vacuum Analysis
      schedule: "0 1 * * *"
      duration: 1h
      impact: Low

  weekly:
    - name: Index Maintenance
      schedule: "0 0 * * 0"
      duration: 2h
      impact: Medium

    - name: Backup Verification
      schedule: "0 2 * * 0"
      duration: 1h
      impact: None

Security Maintenance​

Security Tasks​

security_maintenance:
  patches:
    os_updates:
      frequency: monthly
      window: maintenance_window
      approval_required: true

    dependencies:
      frequency: weekly
      auto_approve: minor_versions
      manual_review: major_versions

  certificates:
    check_frequency: weekly
    renewal_threshold: 30d
    auto_renewal: true

Performance Optimization​

Performance Tasks​

performance_tasks:
  daily:
    - name: Metric Analysis
      action: Review system metrics
      threshold: 95th percentile

    - name: Resource Check
      action: Verify resource utilization
      threshold: 80%

  weekly:
    - name: Performance Report
      action: Generate detailed report
      includes:
        - response_times
        - error_rates
        - resource_usage

Backup Management​

Backup Schedule​

backup_schedule:
  full_backup:
    frequency: weekly
    timing: Sunday 00:00
    retention: 4 weeks

  incremental_backup:
    frequency: daily
    timing: 00:00
    retention: 7 days

  snapshot:
    frequency: hourly
    retention: 24 hours

Maintenance Windows​

Production Environment​

production_maintenance:
  regular_window:
    day: Sunday
    time: 00:00-04:00
    timezone: UTC

  emergency_window:
    notice: 2 hours
    approval: required
    stakeholders:
      - operations_team
      - business_owners

Staging Environment​

staging_maintenance:
  regular_window:
    day: Wednesday
    time: 12:00-16:00
    timezone: UTC

  emergency_window:
    notice: 1 hour
    approval: required
    stakeholders:
      - development_team
      - qa_team

Best Practices​

Maintenance Planning​

  1. Risk assessment
  2. Communication plan
  3. Rollback plan
  4. Verification steps

Update Management​

  1. Regular updates
  2. Dependency tracking
  3. Version control
  4. Change documentation

Performance Management​

  1. Regular monitoring
  2. Proactive optimization
  3. Capacity planning
  4. Performance testing

Security Management​

  1. Regular patching
  2. Security scanning
  3. Access review
  4. Compliance checks