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About this tool
Assemble correct kubectl commands with namespaces, label selectors, output formats and dry-run flags — no man page needed.
This builder assembles syntactically correct kubectl commands — get, describe, delete, logs, exec, apply, scale, port-forward and rollout restart — with the namespace, label selector, output format and dry-run flags in the right places, shell-quoted where needed. It enforces the same flag rules kubectl does, rejecting -A combined with -n, a resource name combined with -l, and the removed boolean --dry-run form. Handy for engineers who touch clusters occasionally and forget flag order and compatibility.
Open Kubectl Command Builder on AltFTool — it loads instantly in your browser.
Paste your code or data sample into the workspace.
Pick the format, conversion, or analysis you need.
Copy the polished result straight back into your project.
Conflicting flags (-A with -n, name with -l, nodes with a namespace) are rejected with the reason, not silently emitted.
Only the flags that apply to the chosen verb appear, so you cannot attach -o yaml to exec or a selector to port-forward.
Arguments with spaces or parentheses, like set-based selectors, are single-quoted automatically.
client validates and prints the object locally without contacting the cluster, while server sends the request through the full API path — authentication, admission webhooks, validation — but persists nothing. Server dry-run catches problems client mode cannot, such as admission policy rejections; the bare boolean --dry-run flag was removed in kubectl 1.18.
Because they contradict each other: -n scopes the request to one namespace while -A (--all-namespaces) asks for every namespace. kubectl also refuses to fetch a resource by name across all namespaces, since names are only unique within a namespace.
Use kubectl logs <pod> --previous, which reads the log of the last terminated container instance instead of the current one. For pods with multiple containers add -c <container-name>, and -f to stream; without --previous a freshly restarted container shows only the new (usually empty) log.
Add -o yaml or -o json to read verbs like get. -o wide adds extra table columns (node, IP), -o name prints just resource/name for scripting, and -o jsonpath='{...}' extracts specific fields — for example -o jsonpath='{.items[*].metadata.name}' lists only names.