Kubernetes / Cloud Platforms

Kubernetes CrashLoopBackOff — OOMKilled (Exit Code 137) Diagnosis Guide

Diagnose and fix pods stuck in CrashLoopBackOff specifically caused by memory limits being exceeded (OOMKilled); determine whether to increase resources or fix memory leaks Includes evidence for Kubernetes troubleshooting demand.

Source-backed Last updated June 2, 2026 3 sources Needs local verification

Category: Cloud Platforms
Error signature: CrashLoopBackOff with Reason: OOMKilled, Exit Code 137
Quick fix: Compare the failing environment with a known working setup, then change one configuration value at a time.
Updated: June 2, 2026
Verification status: Source-backed
Evidence: 3 public source URLs

Before you change production

This page includes public source URLs in the imported troubleshooting record. Compare those references with your version and environment before applying changes.

Reproduce the smallest failing action and save non-secret logs before changing configuration.
Check versions for Kubernetes, related SDKs, package managers, CI runners, and hosting providers.
Change one setting or dependency at a time, then rerun the same failing command or request.
Avoid destructive commands, credential rotation, billing changes, or security relaxations without a rollback plan.

What this error means

CrashLoopBackOff with Reason: OOMKilled, Exit Code 137 is a Kubernetes failure pattern reported for developers trying to diagnose and fix pods stuck in crashloopbackoff specifically caused by memory limits being exceeded (oomkilled); determine whether to increase resources or fix memory leaks. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

Comprehensive troubleshooting guides available on Dash0, Netdata, Komodor, Sysdig, CNCF blog (updated Mar 2026). CrashLoopBackOff triggered by OOMKilled is the #1 cause of pod restart loops. kubectl logs --previous shows last crash context. Root causes include: application memory leak, insufficient resources.limits.memory, missing init container setup, configmap/secret mount failures. Commercial impact: production cluster instability for teams running microservices on EKS/GKE/AKS. Category mapping: Kubernetes → Cloud Platforms (per category rules). This covers the specific OOMKilled sub-case which is the most impactful trigger.

Common causes

Comprehensive troubleshooting guides available on Dash0, Netdata, Komodor, Sysdig, CNCF blog (updated Mar 2026). CrashLoopBackOff triggered by OOMKilled is the #1 cause of pod restart loops. kubectl logs --previous shows last crash context. Root causes include: application memory leak, insufficient resources.limits.memory, missing init container setup, configmap/secret mount failures. Commercial impact: production cluster instability for teams running microservices on EKS/GKE/AKS. Category mapping: Kubernetes → Cloud Platforms (per category rules). This covers the specific OOMKilled sub-case which is the most impactful trigger.

Quick fixes

Confirm the exact error signature matches CrashLoopBackOff with Reason: OOMKilled, Exit Code 137.
Check the Kubernetes account, local tool state, and provider configuration involved in the failing workflow.
Compare the failing environment with a known working setup, then change one configuration value at a time.

Platform/tool-specific checks

Verify the command, editor, extension, or API client that produced the error.
Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

Capture the exact error message and the command, editor action, or request that triggered it.
Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
Review the source evidence below and compare it with your environment.
Apply one change at a time and rerun the smallest failing action.
Keep the working fix documented for the team or deployment environment.

How to prevent it

Keep provider/tool configuration documented.
Record non-secret diagnostics such as tool version, provider name, model name, and command path.
Add a lightweight check before CI or production workflows depend on the tool.

Diagnostic flow for this page

Match CrashLoopBackOff with Reason: OOMKilled, Exit Code 137 exactly before applying the quick fix.
Compare the failing environment with Kubernetes versions, account scope, provider settings, and deployment context.
Check the listed common causes in order, starting with the cause that best matches your logs.
Use the evidence status below to decide whether to confirm against public sources or official documentation.
Apply one reversible change, rerun the smallest failing action, and keep rollback notes.

FAQ

What does CrashLoopBackOff with Reason: OOMKilled, Exit Code 137 mean in Kubernetes?

CrashLoopBackOff with Reason: OOMKilled, Exit Code 137 indicates the workflow described by "Kubernetes CrashLoopBackOff — OOMKilled (Exit Code 137) Diagnosis Guide" failed in a Cloud Platforms context. Start by confirming the exact signature and the component that emitted it.

What should I check first for CrashLoopBackOff with Reason: OOMKilled, Exit Code 137?

Check whether this cause matches your environment: Comprehensive troubleshooting guides available on Dash0, Netdata, Komodor, Sysdig, CNCF blog (updated Mar 2026). CrashLoopBackOff triggered by OOMKilled is the #1 cause of pod restart loops. kubectl logs --previous shows last crash context. Root causes include: application memory leak, insufficient resources.limits.memory, missing init container setup, configmap/secret mount failures. Commercial impact: production cluster instability for teams running microservices on EKS/GKE/AKS. Category mapping: Kubernetes → Cloud Platforms (per category rules). This covers the specific OOMKilled sub-case which is the most impactful trigger.

Is the CrashLoopBackOff with Reason: OOMKilled, Exit Code 137 guidance source-backed?

The "Kubernetes CrashLoopBackOff — OOMKilled (Exit Code 137) Diagnosis Guide" page is labeled source-backed. It has 3 public source URLs from dash0.com, komodor.com, netdata.cloud, so use that evidence status when deciding how much additional verification you need.

When should I avoid the quick fix for CrashLoopBackOff with Reason: OOMKilled, Exit Code 137?

For "Kubernetes CrashLoopBackOff — OOMKilled (Exit Code 137) Diagnosis Guide", avoid applying "Compare the failing environment with a known working setup, then change one configuration value at a time." when the error text differs, the affected version or provider is different, or the change would touch credentials, billing, DNS, production deploy settings, or irreversible data.

What should I collect before debugging CrashLoopBackOff with Reason: OOMKilled, Exit Code 137?

For "Kubernetes CrashLoopBackOff — OOMKilled (Exit Code 137) Diagnosis Guide", collect the failing Kubernetes command or request, non-secret configuration, versions, timestamps, request IDs when available, and the smallest reproduction that still triggers the signature.