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Chris Lu
c997e54096
* admin: extract isFlagExplicitlySet helper from applyViperFallback No behavior change; the inline flag-visit check becomes a reusable helper so the upcoming bind-address default can share it. * admin: default to 0.0.0.0 for authenticated HTTP, keep worker gRPC on loopback PR #11185 made the admin HTTP server default to 127.0.0.1 to stop exposing the unauthenticated admin API on the network by accident. That also locked out operators who already authenticated with -adminPassword: their UI became unreachable from the network after upgrade unless they added -ip=0.0.0.0 (see #11303). An authenticated deployment is safe to expose, so auto-upgrade the -ip default to 0.0.0.0 when -adminPassword or [https.admin] mTLS is configured. The loopback default stays for the unauthenticated case, so the unauthenticated API is never exposed on the network. An explicit -ip is always honored. The worker gRPC control plane has no password auth (only mTLS), so it must not follow the HTTP upgrade. Give it a separate bind address that stays on loopback unless -ip is explicit, so adminPassword no longer re-exposes the unauthenticated worker stream. * admin: hint loopback-only bind in startup banner When the admin server binds to loopback (the default for the unauthenticated case), print a one-line hint that it is not reachable from other hosts and how to expose it. This helps operators who, after the #11185 loopback default, can no longer reach the UI from another machine quickly see the cause and the fix without reading the docs. * admin: keep worker gRPC on loopback, decouple from https.admin mTLS The worker gRPC auto-upgrade to 0.0.0.0 was gated on hasMTLS, which reads the https.admin (HTTP) mTLS config. The worker gRPC mTLS comes from grpc.admin + grpc.ca, a separate config, so: - https.admin mTLS without grpc.admin mTLS widened the worker gRPC to 0.0.0.0 unauthenticated (re-exposing the control plane), and - grpc.admin mTLS without https.admin mTLS left the worker gRPC on loopback, blocking authenticated remote workers. Drop the worker gRPC auto-upgrade entirely. The worker gRPC keeps the raw -ip value (loopback by default), matching the pre-existing behavior; an operator who wants remote workers sets -ip explicitly. Only the HTTP admin listener auto-upgrades to 0.0.0.0 when authenticated. Addresses review feedback on #11314 from Devin and Greptile.