The grpc, grpc-tcp, and ttrpc server plugins enumerated their services
through ic.GetByType, which short-circuits on the first plugin whose
Instance() returned an error. A single failed gRPC plugin (e.g. CRI
under rootless, which cannot watch /etc/cni/net.d) therefore prevented
the server plugins from initialising, leaving /run/containerd/containerd.sock
uncreated.
Iterate the plugin set directly and skip plugins that failed to
initialise, restoring the pre-c15ec2485 behaviour where the listener
is still created and only the failed services are missing.
Fixes: c15ec2485 ("Add server plugins for grpc and ttrpc")
Fixes: https://github.com/containerd/containerd/issues/13362
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
The new server plugin type allows services which have listeners to be
configured as plugins rather than defined directly in the global
configuration. This provides more configuration consistency and allows
containerd to be extended for new types of api handlers.
Signed-off-by: Derek McGowan <derek@mcg.dev>
