Advanced interview questions in DevOps & Cloud, page 8
advanced1 min read
Mutating vs Validating webhooks with an Operator
Mutating runs first to inject defaults or sidecars, validating runs after to reject bad specs, both keyed to your CRD.
advanced1 min read
Preventing split-brain in HA Operators
Run active-passive replicas, only the leader reconciles, election uses a Lease object renewed under a TTL.
advanced2 min read
Diagnosing latency with distributed tracing
Follow the trace ID across spans, compare per-span durations to find the slow hop, distinguish service time from network and queueing.
advanced2 min read
Method-aware authorization with Istio policy
An ALLOW policy on user-service granting frontend's principal POST plus the users path, another granting all principals GET; deny is implicit once any ALLOW exists.
We are hiring for this. Every open role lists the topics its interview covers, so you can prepare for the real thing rather than guessing.
See open roles