Kubernetes
A voluntary disruption can be denied when too few healthy replicas would remain. Inspect the budget and application readiness before changing it.
Deployments, Scheduling & Batch Workloads1 นาทีในการอ่าน
อ่านบทความ : Investigate a drain blocked by a PodDisruptionBudget
Kubernetes
A valid-looking workload can require labels or topology relationships no available node satisfies. Inspect the actual placement rules.
Deployments, Scheduling & Batch Workloads1 นาทีในการอ่าน
อ่านบทความ : Find an affinity rule that makes a workload unschedulable
Kubernetes
A Pod can tolerate a taint and still fail other constraints, or be excluded by an untolerated taint. Compare both sides explicitly.
Deployments, Scheduling & Batch Workloads1 นาทีในการอ่าน
อ่านบทความ : Explain why a toleration permits scheduling but does not guarantee placement
Kubernetes
A Deployment can request more replicas while its ReplicaSet cannot create Pods because namespace quota is exhausted.
Deployments, Scheduling & Batch Workloads1 นาทีในการอ่าน
อ่านบทความ : Find namespace quota preventing new replicas from being created
Kubernetes
A Service object can exist and have an IP while selecting the wrong labels. Compare its selector with the actual Pod labels.
Services, DNS & Traffic Routing1 นาทีในการอ่าน
อ่านบทความ : Find a Service selector that matches no application Pods
Kubernetes
A matching Pod can be excluded from ordinary service traffic when readiness is false. Inspect endpoints rather than only counting running Pods.
Services, DNS & Traffic Routing1 นาทีในการอ่าน
อ่านบทความ : Investigate a Service with no ready EndpointSlice addresses
Kubernetes
A Service's client-facing port can differ from the backend port. A mismatch can make healthy Pods unreachable through the Service.
Services, DNS & Traffic Routing1 นาทีในการอ่าน
อ่านบทความ : Diagnose a Service port pointing to the wrong container listener
Kubernetes
A host-networked or specially configured Pod can resolve names differently from ordinary application Pods. Inspect DNS configuration intent.
Services, DNS & Traffic Routing1 นาทีในการอ่าน
อ่านบทความ : Investigate a Pod using an unexpected DNS policy
Kubernetes
Many applications can fail together when cluster DNS is unavailable, but network policy or upstream forwarding may be the real issue.
Services, DNS & Traffic Routing1 นาทีในการอ่าน
อ่านบทความ : Check cluster DNS component health before editing its configuration
Kubernetes
A Pod can become isolated for egress while still answering inbound health checks. Inspect all policies selecting it.
Services, DNS & Traffic Routing1 นาทีในการอ่าน
อ่านบทความ : Investigate a network policy blocking backend or DNS egress
Kubernetes
A permitted application label alone may not match a policy that combines namespace and Pod selectors differently than intended.
Services, DNS & Traffic Routing1 นาทีในการอ่าน
อ่านบทความ : Diagnose a cross-namespace policy selector mismatch
Kubernetes
An Ingress can exist without a controller handling it because its class or controller assignment is wrong.
Services, DNS & Traffic Routing1 นาทีในการอ่าน
อ่านบทความ : Find an Ingress ignored by the intended controller