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Monthly Patch Management Lifecycle - Coggle Diagram
Monthly Patch Management Lifecycle
Planning & Governance
Patch Policy
Monthly patch cycle
Emergency patch process
Critical vulnerability SLA
Compliance requirements
Asset Inventory
Server inventory
Operating system versions
Application inventory
Environment classification
Server Classification
Production
Staging
Development
DR Site
Critical Systems
Non-Critical Systems
Risk Assessment
CVSS score review
Vulnerability analysis
Business impact analysis
Dependency mapping
Patch Sources
Vendor Repositories
Ubuntu Repository
RHEL Repository
Rocky Linux Repository
Debian Repository
Internal Repositories
Satellite Server
Foreman
Spacewalk
Local Mirror Repository
Security Advisories
CVE Database
Vendor Security Bulletins
CIS Benchmarks
Internal Security Team
Patch Testing Phase
Test Environment
Clone production environment
Snapshot creation
Baseline validation
Functional Testing
Service validation
Application validation
Database connectivity
Network connectivity
Security Testing
Vulnerability scan
Compliance scan
Configuration validation
Rollback Testing
Snapshot restoration
Backup recovery validation
Change Management
RFC Creation
Change request
Risk assessment
Business justification
CAB Approval
Change Advisory Board
Security approval
Application owner approval
Maintenance Window
Scheduled downtime
User notification
Stakeholder communication
Automation Platform
Ansible
Patch automation
Rolling updates
Inventory management
Red Hat Satellite
Lifecycle management
Patch deployment
Foreman
Patch orchestration
Reporting
Puppet
Configuration management
Chef
Automated patching
Pre-Patching Activities
Verify Backups
System backup
Database backup
Configuration backup
Create Snapshots
VMware snapshot
Hyper-V checkpoint
Cloud snapshot
Health Checks
CPU utilization
Memory utilization
Disk utilization
Service status
Verify Connectivity
SSH access
Repository access
DNS resolution
Deployment Strategy
Batch Deployment
Batch 1
Development Servers
Batch 2
Staging Servers
Batch 3
Non-Critical Production
Batch 4
Critical Production
Rolling Patching
Small groups
Health verification
Continue rollout
Canary Deployment
Patch few servers first
Observe behavior
Full rollout after validation
Linux Patch Commands
Ubuntu
Update Package Metadata
sudo apt update
Upgrade Packages
sudo apt upgrade -y
Full Upgrade
sudo apt full-upgrade -y
Reboot Check
needs-restarting -r
RHEL Rocky AlmaLinux
Refresh Metadata
sudo dnf check-update
Upgrade Packages
sudo dnf update -y
Security Updates Only
sudo dnf update --security -y
Reboot Check
sudo needs-restarting -r
Example Ansible Workflow
Inventory
1000 managed hosts
Execute Patch Playbook
ansible-playbook patch.yml
Serial Deployment
serial: 50
Verify Results
Health checks
Service checks
Validation Phase
Verify Services
systemctl status
Verify Applications
Web applications
Databases
Middleware
Verify Security
Vulnerability scan
Compliance scan
Verify Logs
journalctl
syslog
application logs
Reboot Management
Reboot Required Check
needs-restarting -r
Controlled Reboot
sudo reboot
Sequential Reboot
Load balancer awareness
Cluster awareness
High Availability Validation
Node failover validation
Service availability validation
Monitoring
Infrastructure Monitoring
CPU
Memory
Disk
Application Monitoring
Response time
Error rates
Availability
Security Monitoring
Vulnerability scans
SIEM alerts
Rollback Process
Trigger Conditions
Service outage
Application failure
Performance degradation
Rollback Methods
VM snapshot restore
Backup restore
Package downgrade
Verification
Service recovery
User validation
Reporting
Patch Compliance
Patched systems
Failed systems
Pending systems
Executive Dashboard
Compliance percentage
Risk reduction
Vulnerability reduction
Audit Evidence
Change records
Patch reports
Approval records
Enterprise Best Practices
Principle of Least Privilege
Separate Development and Production
Test Before Production
Automate Patching
Maintain Rollback Plan
Use Change Management
Maintain Patch Compliance Above 95%
Monitor After Deployment
Document Everything
Perform Monthly Vulnerability Assessments