Specification Available here Example usage Available here

Debugging Helm Templates To debug Helm templates, navigate to the Helm chart directory and run: helm template test . --dry-run --debug \ --values values.yaml \ --values values/dev.yaml > output.yaml This command renders the templates with specified values and outputs the result to output.yaml. The --dry-run and --debug flags provide valuable debugging information.

Spec Explorer kube-spec.dev: A handy tool for exploring Kubernetes resource specifications. Link: https://kubespec.dev Running a One-Time Job from a CronJob To execute a job based on an existing CronJob, use the following command: kubectl create job --from=cronjob/<cronjob-name> <job-name> -n <namespace-name> Source: https://stackoverflow.com/a/50041304 Spawning a Curl Container for Debugging To quickly spin up a curl container with specific security and resource constraints, use: kubectl run debug-curl \ --image=curlimages/curl \ --overrides='{ "apiVersion": "v1", "spec": { "securityContext": { "runAsNonRoot": true, "runAsUser": 1000, "runAsGroup": 1000 }, "containers": [ { "name": "debug-curl", "image": "curlimages/curl", "resources": { "requests": { "cpu": "100m", "memory": "128Mi" }, "limits": { "cpu": "200m", "memory": "256Mi" } }, "command": ["/bin/sh", "-c", "sleep infinity"] } ] } }' This command creates a debug-curl pod with a non-root user context and resource requests/limits. Connect to the shell using: kubectl exec pod/debug-curl sh Delete container using kubectl delete pod/debug-curl Getting Kubernetes Events To view Kubernetes events sorted by creation timestamp, use: ...

1. Monitor CPU Usage Use Kubernetes-native tools like kubectl top to check CPU usage for the PostgreSQL pod: kubectl top pod <postgres-pod-name> -n <namespace> Check if the CPU usage is consistently high or spiking. 2. Check PostgreSQL Metrics Use PostgreSQL’s built-in statistics and monitoring tools: pg_stat_activity: Identify active queries and their states. SELECT * FROM pg_stat_activity; pg_stat_statements: Identify the most resource-intensive queries. SELECT query, calls, total_exec_time, rows, 100.0 * total_exec_time / sum(total_exec_time) over () as percentage FROM pg_stat_statements ORDER BY total_exec_time DESC; Reset pg_stat_statements: ...

Context You want to declare an array of options. It should not change during the runtime of your program. To enforce non-mutability you declare it using const assertion. const options = ["Foo", "Bar", "Baz"] as const; const assertion means that you ask compiler to use the narrowest or most specific type. So options is not string[] but a readonly, 3-elements tuple. Problem Now you want to create a type that reflects literal strings listed in this options tuple. ...

A friend of mine has recently intrigued me with a question about TypeScript. He asked: Why TypeScript is not consistent in the following situation? Imagine you have a type Foo and type Bar which extends Foo. Why, when passing instance of Bar into a function accepting Foo, TypeScript does not complain, but when we try to declare a variable of type Foo but with extra keys specified, it does complain. ...