FEATURE STATE: Kubernetes v1.16 [alpha]  This page provides an overview of ephemeral containers: a special type of container that runs temporarily in an existing Pod to accomplish user-initiated actions such as troubleshooting. You use ephemeral containers to inspect services rather than to build applications.
Warning: Ephemeral containers are in early alpha state and are not suitable for production clusters. In accordance with the Kubernetes Deprecation Policy, this alpha feature could change significantly in the future or be removed entirely.