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243 launch guides · 2601 reviewed steps
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Incident Response & Troubleshooting · Security

Fix certificate verify failed and unable to get local issuer certificate

“certificate verify failed” and “unable to get local issuer certificate” are trust-validation failures, not instructions to turn TLS checks off. Compare the actual client, endpoint, served chain, hostname, time and trust store, then repair the demonstrated server or client boundary.
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caution45 minintermediate8 stepsUbuntu Server

Containers & Kubernetes · Observability & Monitoring · Incident Response & Troubleshooting

Fix Kubernetes Metrics API not available: APIService, TLS and metrics-server

Trace Metrics API not available from kubectl top through API aggregation, Service endpoints, metrics-server and kubelet access. Repair the failing layer without disabling TLS verification or replacing a managed add-on blindly.
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caution45 minintermediate8 stepskubectl client

DevOps & CI/CD · Security

Fix npm UNABLE_TO_GET_ISSUER_CERT_LOCALLY and SELF_SIGNED_CERT_IN_CHAIN safely

npm reports UNABLE_TO_GET_ISSUER_CERT_LOCALLY or SELF_SIGNED_CERT_IN_CHAIN when Node.js cannot build a trusted certificate path for the configured registry or an HTTPS-intercepting proxy. This guide restores an explicit trust chain without disabling TLS verification.
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caution45 minintermediate10 stepsNode.js