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Why does kubectl apply succeed but my changes don’t show up in the pod?
Some Kubernetes resources don’t automatically trigger restarts. ConfigMaps and Secrets can update successfully without affecting running pods unless you explicitly restart them or design the application to reload configuration dynamically. This often makes it feel like changes were ignored when theyRead more
Some Kubernetes resources don’t automatically trigger restarts.
ConfigMaps and Secrets can update successfully without affecting running pods unless you explicitly restart them or design the application to reload configuration dynamically. This often makes it feel like changes were ignored when they weren’t.
Takeaway: Successful applies don’t always mean live changes.
See lessWhy does my Docker image work on my machine but fail on Alpine Linux?
Alpine uses a different C library, which breaks many precompiled binaries. If your application relies on native extensions or copied binaries, they may not be compatible with Alpine’s environment. This is especially common with Python and Node dependencies. Switching base images or compiling dependeRead more
Alpine uses a different C library, which breaks many precompiled binaries.
If your application relies on native extensions or copied binaries, they may not be compatible with Alpine’s environment. This is especially common with Python and Node dependencies.
Switching base images or compiling dependencies inside Alpine usually resolves it.
Takeaway: Base image choice affects binary compatibility more than people expect.
See lessWhy does my Terraform plan differ between machines?
Different Terraform or provider versions produce different plans. Without version locking, small changes in provider behavior cause unexpected diffs. This is especially noticeable across developer machines and CI. Takeaway: Determinism starts with strict version control.
Different Terraform or provider versions produce different plans.
Without version locking, small changes in provider behavior cause unexpected diffs. This is especially noticeable across developer machines and CI.
Takeaway: Determinism starts with strict version control.
See lessWhy does my Docker build fail with “no space left on device” even though the host has free disk space?
Docker manages its own storage area, and that space can fill up even if the host filesystem still has room. Old images, stopped containers, and unused build cache accumulate quietly over time, especially on CI machines. When Docker’s storage directory fills up, builds fail even though df -h looks fiRead more
Docker manages its own storage area, and that space can fill up even if the host filesystem still has room.
Old images, stopped containers, and unused build cache accumulate quietly over time, especially on CI machines. When Docker’s storage directory fills up, builds fail even though
df -hlooks fine at first glance.This catches people off guard because the error doesn’t point to Docker storage directly.
Takeaway: Docker disk usage needs its own cleanup and monitoring, separate from the host.
See lessWhy does my Terraform apply succeed but resources don’t actually exist?
Terraform probably applied the resources somewhere other than where you’re looking. This happens when credentials point to a different account, subscription, or region than expected. Terraform doesn’t warn you if you’re authenticated correctly but targeting the wrong environment—it just applies succRead more
Terraform probably applied the resources somewhere other than where you’re looking.
This happens when credentials point to a different account, subscription, or region than expected. Terraform doesn’t warn you if you’re authenticated correctly but targeting the wrong environment—it just applies successfully.
This is especially common in CI setups where multiple cloud credentials exist side by side.
Takeaway: Always verify account and region before assuming Terraform didn’t work.
See less