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PR #107663 changed the startup logic to always call `SetupContainerd` which will generate a new containerd `/etc/containerd/config.toml` file. This is not always desired since some jobs install containerd from source and the containerd startup scripts (https://github.com/containerd/containerd/blob/main/contrib/gce/configure.sh) are responsible for generating the `/etc/containerd/config.toml` file. By always calling `SetupContainerd`, the containerd configuration by containerd's `configure.sh` will be overridden which breaks certain test jobs, see https://github.com/kubernetes/kubernetes/issues/107830. To fix this issue, only call `SetupContainerd` if `/etc/profile.d/containerd_env.sh` does not exist. When containerd `configure.sh` script will run, `/etc/profile.d/containerd_env.sh` will be written, and as a result the k8s setup scripts should avoid overriding the containerd configuration. Signed-off-by: David Porter <david@porter.me>
Kubernetes (K8s)
Kubernetes, also known as K8s, is an open source system for managing containerized applications across multiple hosts. It provides basic mechanisms for deployment, maintenance, and scaling of applications.
Kubernetes builds upon a decade and a half of experience at Google running production workloads at scale using a system called Borg, combined with best-of-breed ideas and practices from the community.
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