Posts tagged #kubernetes
Kubernetes
From Dockerfile to Kubernetes in Four Steps
Take a Node.js API from a first Dockerfile to validated Kubernetes manifests with four free OpsAtlas tools: lint, Compose, generate, validate.
· 4 min read
Kubernetes
Your First Kubernetes Deployment and Service
Run a container on a local Kubernetes cluster: generate a Deployment and Service, check them, apply them and watch Kubernetes keep the app running.
· 4 min read
Kubernetes
Debugging a Kubernetes 503: From Ingress to Pod
Trace a 503 or 502 from a Kubernetes Ingress through the Service and its endpoints to the pod, with the kubectl command to check each hop.
· 3 min read
Kubernetes
Kubernetes CronJobs: Time Zones, Missed Runs, Overlaps
Why a Kubernetes CronJob runs at the wrong hour, runs twice, or stops running, and the CronJob settings that make scheduled jobs predictable.
· 3 min read
Kubernetes
Kubernetes Probes Without the Outages
How readiness, liveness and startup probes differ, the probe mistakes that turn a slow database into a full outage, and safe settings to start from.
· 3 min read
Kubernetes
Planning Kubernetes Node, Pod and Service CIDRs
How to size the three IP ranges every Kubernetes cluster needs, why pod CIDRs run out first, and how to avoid overlaps with VPCs, VPNs and Docker.
· 3 min read
Kubernetes
Why Kubernetes Rejects value: yes (YAML 1.1 vs 1.2)
The same YAML file can mean different things to different parsers. How the 1.1 vs 1.2 split breaks Kubernetes, Compose and CI files, and how to spot it.
· 3 min read
