CGOA Certified GitOps Associate Exam

In GitOps, reconcilers ensure the actual state matches the desired state. Reconcilers may run inside the cluster (in-cluster) or outside (external). The choice depends primarily on operational scale and the complexity of reconciliation logic. “When determining reconciler placement, factors such as the size of the environment, the operational complexity of the reconciler, and the performance requirementsshould be evaluated. Incluster reconcilers are common for straightforward deployments, while external reconcilers may be chosen for large-scale or complex systems.” Thus, the most important considerations are clustersize and complexity of reconciler logic, making B correct. Reference: GitOps Related Practices(CNCF GitOps Working Group), GitOps Reconciler Guidelines. 

One of the four fundamental GitOps principles is Versioned and Immutable. This means that the entire system’s desired state must be stored in a Git repository with version control. Each change must be represented as a commit, and Git’s immutability guarantees a reliable, auditable history of how the system evolved. “The desired state isstored in a version control system. The record of truth is stored in an immutable history, and changes can be audited and reverted if necessary. This guarantees that the system’s configuration is versioned, immutable, and traceable.” Thus, configuration and infrastructure must be version-controlled and immutable, never changed directly in production. Reference: GitOps Principles (CNCF GitOps Working Group), Principle 2: The desired system state is stored as versioned and immutable.