Description

BUILDKITE_KUBERNETES_EXEC is a legacy environment variable. It was used to activate the socket on the bootstrap command, and to activate the socket server on buildkite-agent start. The former has been superseded by this kubernetes-bootstrap command.

But we want to keep this env var because some users depend on it as a k8s environment detection mechanism.

Context

PS-1525

Changes

• Set BUILDKITE_KUBERNETES_EXEC to true for bootstrap command spawed by kubernetes-bootstrap.
• Move the global Kubernetes flag to start command, as that is the only place it is still having any impact.

Testing

• Tests have run locally (with go test ./...). Buildkite employees may check this if the pipeline has run automatically.
• Code is formatted (with go tool gofumpt -extra -w .)

Disclosures / Credits

Human + LLM