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Error fix

How to fix “Kubernetes CrashLoopBackOff”

The container exits repeatedly—check logs, probes, and resource limits.

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Updated Apr 20, 2026

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Fastest fix

Start here first. Step 1 fixes most cases—then work down the list.

  1. Reproduce with the smallest URL/command and capture full stderr or response body.
  2. Confirm versions (runtime, CLI, framework) against official requirements.
  3. Compare with CI or a second machine to rule out local-only issues.

What this means

The container exits repeatedly—check logs, probes, and resource limits. Use the steps below as a practical checklist—adapt commands to your OS and stack.

Common causes

  • Environment mismatch

    Different Node/OS versions, missing env vars, or drift between local and deployed configs.

  • Bad inputs or timing

    Race conditions, partial deploys, or hitting endpoints before dependencies are ready.

Step-by-step fix

  1. Isolate and verify

    1. Reproduce with the smallest URL/command and capture full stderr or response body.
    2. Confirm versions (runtime, CLI, framework) against official requirements.
    3. Compare with CI or a second machine to rule out local-only issues.

Related

FAQ

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Full error text, timestamps, versions, and whether it reproduces in a clean profile or container.
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Original error message
CrashLoopBackOff
Fix another errorHTTP status codesURL status checkerRedirect checkerAll tools