Why Kubernetes evicts pods and what to inspect first
The search intent behind this problem is tracing eviction to memory, disk, PID, or ephemeral-storage pressure.
Kubernetes Pod stuck Pending: scheduler, quota, affinity, or storage?
The search intent behind this problem is separating scheduler rejection from image and startup failures.
Kubernetes Pod stuck Terminating: finalizers and graceful shutdown
The search intent behind this problem is finding why deletion cannot complete.
Kubernetes PVC Pending: storage class and topology checklist
The search intent behind this problem is diagnosing why a persistent volume claim cannot bind.
Kubernetes readiness vs liveness probes: the production difference
The search intent behind this problem is choosing the probe that removes traffic without causing a restart storm.
Kubernetes requests vs limits: stop guessing resource settings
When setting scheduler guarantees and runtime ceilings from evidence, speed comes from ordering the investigation—not from typing more commands.
Kubernetes rollout stuck: unavailable replicas and progress deadlines
When explaining why a Deployment cannot complete, speed comes from ordering the investigation—not from typing more commands.
Kubernetes Secret mount failure: names, keys, and permissions
The search intent behind this problem is tracing secret projection errors without printing secret values.
Kubernetes Service has no endpoints: selector and readiness debugging
When restoring traffic when a Service selects zero ready pods, speed comes from ordering the investigation—not from typing more commands.
Linux clock drift breaks TLS, logs, and distributed systems
When checking synchronization, source, offset, and leap state, speed comes from ordering the investigation—not from typing more commands.
High context switches on Linux: when concurrency becomes overhead
The search intent behind this problem is attributing scheduler churn to threads, locks, and wakeups.
Linux CPU steal time: your VM is waiting on the hypervisor
When distinguishing guest load from host contention, speed comes from ordering the investigation—not from typing more commands.
Linux cgroup CPU throttling: high latency below 100% CPU
The search intent behind this problem is detecting quota exhaustion in containers and services.
Deleted files still consuming disk: find open descriptors
The search intent behind this problem is reclaiming space without truncating the wrong process.
Read iostat like an operator: await, queue, and utilization
The search intent behind this problem is diagnosing storage without one magic threshold.
Linux file descriptor leak: sockets, files, and limits
The search intent behind this problem is proving descriptor growth and the responsible type.
Linux CPU at 100%: identify process, thread, and cause
Separate demand, busy loops, lock contention, steal time, and runaway children before restarting the loudest process.
Linux memory pressure: free, cache, swap, and OOM explained
Low free memory is normal when cache is reclaimable; sustained swap-in, OOM kills, and rising anonymous RSS are the stronger signals.
Disk has free space but writes fail: inode exhaustion
The search intent behind this problem is finding filesystems with no allocatable file records.
High I/O wait on Linux: latency, queue, or idle CPU?
The search intent behind this problem is interpreting wa without blaming the disk too early.
Linux kernel log triage: hardware, filesystem, OOM, and network
The search intent behind this problem is separating actionable new events from old boot noise.
Service listens on localhost but not the network
The search intent behind this problem is fixing bind address without exposing more than intended.
Linux load average is not CPU usage
Pair it with CPU, I/O latency, and D-state processes before concluding the box needs more cores.
High load average with low CPU usage
The search intent behind this problem is finding uninterruptible I/O, runnable queues, and blocked tasks.