* admin: bind worker gRPC listener to -ip instead of wildcard
The worker/plugin gRPC control plane called net.Listen("tcp", ":port")
directly, so it wildcard-bound every interface and ignored the -ip setting.
A cluster bound to loopback still exposed the unauthenticated
WorkerService/PluginControlService streams on 0.0.0.0. Bind through
util.JoinHostPort(bindIp, port) so the listener honors -ip like the
master, filer, and volume gRPC listeners.
* admin: warn when worker gRPC is exposed off loopback without mTLS
The worker gRPC stream has no password auth, so grpc.admin mTLS is the
only effective control once the listener leaves loopback. An operator who
sets -adminPassword and binds -ip=0.0.0.0 authenticates the HTTP API but
still exposes the unauthenticated worker control plane. Log a startup
warning naming the port and the mTLS knobs so the exposure is not silent.
* admin: address review on worker gRPC bind fix
- mini: reserve the admin gRPC port with util.JoinHostPort so an IPv6
bindIp (e.g. ::1) does not form an invalid unbracketed address and
lose the reservation.
- worker gRPC: track whether grpc.admin mTLS credentials actually loaded
rather than only whether they were configured, and gate the
non-loopback exposure warning on that. A cert/key that fails to load
now still warns instead of silently suppressing.
Chris Lu
cf38c01978