DevOps Classroom notes 25/Dec/2024

Platform as a Service

• Lets evaluate Platform as a Service w.r.t Databases
• AWS:
  • Offers mysql, postgres,microsoft sql server, oracle and IBM DB2 as a service
  • AWS calls this service as RDS (Relational Database services)
  • Free tier:
• Azure:
  • Offers mysql, postgres, microsoft sql server as a service.
  • Azure offers this services as Azure SQL
• Database and Networks
  • Database should be private
    
• Steps:
  • Ensure network is present, if not create it
    • AWS by default in every region have one network created where as azure has no default networks
• AWS Screen shots
• VPC
  
  
  
  
• Security Fencing (watch classroom recording for screens)
• Create mysql Datbase
  
  
• Azure Screen shots (Watch recording)

BCDR ( Business continuity and Disaster Recovery)

• Single Point of Failure (SPOF) Running stuff on one server
• To avoid SPOF we have two options
  • backups: it is a cheaper solution but will lead to downtime while restore.
  • redundant servers: Have primary and secondary servers
    • Aprroaches:
      • Active Passive: