Monitoring the availability of the primary service can be done in the form of health checks. When a downtime condition happens, it will trigger failover; in this case, a DNS failover is used via Route 53 HTTP health checks, and a Failover Routing Policy is configuring the on-premises side as Primary and the cloud environment as Secondary to fail over the AWS cloud.
Availability monitoring
by Stuart Scott, Gabriel Ramirez
AWS Certified Solutions Architect - Associate Guide
- Title Page
- Copyright and Credits
- Dedication
- Packt Upsell
- Contributors
- Preface
- Introducing Amazon Web Services
- AWS Global Infrastructure Overview
- Elasticity and Scalability Concepts
- Technical requirements
- Sources of failure
- Dividing and conquering
- Virtualization technologies
- LAMP installation
- Scaling the web server
- Resiliency
- EC2 persistence model
- Disaster recovery 
- Cascading deletion
- Bootstrapping
- Scaling the compute layer
- Scaling a database server
- Summary
- Further reading
- Hybrid Cloud Architectures
- Resilient Patterns
- Event Driven and Stateless Architectures
- Integrating Application Services
- Disaster Recovery Strategies
- Storage Options
- Matching Supply and Demand
- Introducing Amazon Elastic MapReduce
- Web Scale Applications
- Understanding Access Control
- Encryption and Key Management
- An Overview of Security and Compliance Services
- AWS Security Best Practices
- Technical requirements
- Shared responsibility model
- Data protection
- Virtual Private Cloud
- Identity and Access Management
- Avoid sharing identities
- Using MFA for privileged users
- Using roles
- Password policy
- Assigning permissions to groups instead of to individual users
- Rotating your access keys
- Assigning permissions according to the rule of least privilege
- Re-evaluating permissions and deleting accounts
- Do not use the root account as an operational user
- EC2 security
- Security services
- Summary
- Further reading
- Web Application Security
- Cost Effective Resources
- Working with Infrastructure as Code
- Automation with AWS
- Introduction to the DevOps practice in AWS
- Mock Test 1
- Mock Test 2
- Assessment
- Another Book You May Enjoy
Availability monitoring
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