Red Hat Certified Specialist in Building Resilient Microservices Certification

As part of this exam, you should be able to:

• Work with Red Hat OpenShift Service Mesh Custom Resources.
• Deploy and configure applications on the Service Mesh, including:
  • Manually installing sidecars in pod applications.
  • Automatically injecting sidecars using annotations.
• Understand and configure network policies, including Mesh members and external services.
• Manage request routing and traffic, including:
  • Configuring static and dynamic request routing to different application versions.
  • Applying deployment/release strategies such as A/B testing and canary releases.
• Configure advanced routing techniques to control service flows and API calls.
• Implement traffic shifting within the mesh, managing A/B testing, canary rollouts, staged rollouts, and dark launches.
• Utilize traffic mirroring to simulate changes to microservices and shadow live traffic.
• Manage ingress and egress traffic control policies to regulate traffic in and out of the mesh.
• Set up and manage gateways to control incoming traffic to services.
• Enable access to external publicly accessible services within the Istio cluster.
• Configure network resilience and fault tolerance dynamically at runtime to prevent cascading failures.
• Set timeouts and retries to enhance service availability and control waiting times.
• Implement circuit breakers to limit service calls and prevent access to overloaded services.
• Specify connection and ejection pool policies, including load balancing rules.
• Work with Service Mesh policies, including rate limiting, access quotas, and authorization for workloads.
• Enable workload-to-workload communication using secure naming, mutual TLS, and authentication/authorization security in the Service Mesh.
• Configure service-to-service communication, enforcing security through mutual TLS and identity mapping.
• Set policies for end-user authentication and define access rules for service and user communications.
• Use fault injection mechanisms for chaos testing, including introducing delays and error injections to assess failure recovery.

This list outlines the critical tasks you’ll need to handle to manage resilient microservices within the OpenShift Service Mesh.