messages listlengths 3 3 |
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[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "kubectl describe pod shows ImagePullBackOff, what should I check?"
},
{
"role": "assistant",
"content": "Check three things in order: (1) `kubectl describe pod <n... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "My pod keeps CrashLoopBackOff but I can't see why."
},
{
"role": "assistant",
"content": "Start with `kubectl logs <pod> --previous` -- the current container may ... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "A pod is stuck in Pending and never schedules."
},
{
"role": "assistant",
"content": "Run `kubectl describe pod <pod>` and read the Events section -- the schedule... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "kubectl get pods shows a pod as Evicted."
},
{
"role": "assistant",
"content": "Evicted almost always means the node ran out of a resource -- usually disk (`kubec... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "OOMKilled -- how do I actually fix this, not just restart it?"
},
{
"role": "assistant",
"content": "Exit code 137 means the container hit its memory *limit*, not... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "kubectl rollout status deployment/myapp just hangs, what's happening?"
},
{
"role": "assistant",
"content": "This usually means new pods aren't reaching Ready. Ch... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "How do I roll back a bad deployment quickly?"
},
{
"role": "assistant",
"content": "`kubectl rollout undo deployment/myapp` reverts to the previous ReplicaSet. To... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "A pod can't resolve other services by name -- nslookup fails inside the pod."
},
{
"role": "assistant",
"content": "Check CoreDNS is actually running: `kubectl ge... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "Ingress returns 502 Bad Gateway even though the pod is Running."
},
{
"role": "assistant",
"content": "502 means the ingress controller reached a backend but got ... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "kubectl get svc shows my Service but curl to the ClusterIP times out."
},
{
"role": "assistant",
"content": "Check the Service's selector actually matches labels ... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "PersistentVolumeClaim is stuck in Pending."
},
{
"role": "assistant",
"content": "Check `kubectl describe pvc <name>` for events. Common causes: no StorageClass m... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "I deleted a PVC but the underlying disk is still there in my cloud provider."
},
{
"role": "assistant",
"content": "That's expected if the StorageClass's `reclaim... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "kubectl gives me 'Error from server (Forbidden)' -- how do I debug RBAC?"
},
{
"role": "assistant",
"content": "`kubectl auth can-i <verb> <resource> --as=<user-o... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "A pod's application gets 403 errors calling the Kubernetes API from inside the cluster."
},
{
"role": "assistant",
"content": "The pod is likely using its default... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "A node shows NotReady in kubectl get nodes."
},
{
"role": "assistant",
"content": "SSH to the node if possible and check `systemctl status kubelet` -- a crashed o... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "How do I safely take a node out of rotation for maintenance?"
},
{
"role": "assistant",
"content": "`kubectl cordon <node>` marks it unschedulable without touchin... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "HorizontalPodAutoscaler isn't scaling up even though CPU usage looks high."
},
{
"role": "assistant",
"content": "Check `kubectl describe hpa <name>` -- it shows ... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "Cluster autoscaler isn't adding nodes even though pods are stuck Pending."
},
{
"role": "assistant",
"content": "Check `kubectl describe pod <pod>` for the exact ... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "What's actually the difference between requests and limits?"
},
{
"role": "assistant",
"content": "`requests` is what the scheduler uses to decide which node has ... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "Pods fail to create with 'exceeded quota' errors."
},
{
"role": "assistant",
"content": "Check `kubectl describe resourcequota -n <namespace>` to see the namespac... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "I updated a ConfigMap but my running pods still have the old values."
},
{
"role": "assistant",
"content": "If the ConfigMap is mounted as a volume, updates do ev... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "A Kubernetes Job shows 0/1 completions and never finishes."
},
{
"role": "assistant",
"content": "Check the Job's pod directly with `kubectl logs job/<name>` -- i... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "docker pull against our internal registry fails with 'manifest not found' even though the tag exists."
},
{
"role": "assistant",
"content": "This is a classic reg... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "docker buildx build --cache-to type=registry fails with 401 Unauthorized, but a plain docker pull of the same image works fine."
},
{
"role": "assistant",
"conten... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "After a GKE node restarts, nvidia-smi fails with 'couldn't communicate with the NVIDIA driver' even though it worked before."
},
{
"role": "assistant",
"content":... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "How does GKE decide whether to scale up a Spot node pool or a standard one?"
},
{
"role": "assistant",
"content": "By default, GKE's cluster autoscaler is cost-aw... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "My SSH session to a cloud VM keeps dying and killing my long-running training job."
},
{
"role": "assistant",
"content": "Run long jobs inside `tmux` (or `screen`... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "helm upgrade fails with 'another operation is in progress'."
},
{
"role": "assistant",
"content": "A previous install/upgrade/rollback didn't finish cleanly, leav... |
[
{
"role": "system",
"content": "You are a helpful Kubernetes and infrastructure expert."
},
{
"role": "user",
"content": "A StatefulSet pod is stuck Terminating for several minutes."
},
{
"role": "assistant",
"content": "StatefulSet pods respect `terminationGracePeriodSeconds` (defau... |
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