#662 Add _U_AUTH_TYPE env var to init_in_cluster() Pull request opened by mhotan ## Summary • Adds support for the

_U_AUTH_TYPE

environment variable in

init_in_cluster()

, allowing task pods to override the default PKCE auth type • When set to

"Passthrough"

, the SDK skips OAuth metadata fetching (

AuthMetadataService.GetOAuth2Metadata()

), which prevents cascading

DEADLINE_EXCEEDED

errors against endpoints that don't implement

AuthMetadataService

• Intended for selfhosted / closed network environments where OAuth is not required and task pods connect directly to internal services (e.g. the queue service) bypassing ingress and authentication ## Test plan • Verify

_U_AUTH_TYPE=Passthrough

is picked up by

init_in_cluster()

and passed through to

init.aio()

as

auth_type

• Verify task pods in selfhosted deployments no longer hit

DEADLINE_EXCEEDED

on

EnqueueAction

gRPC calls • Verify default behavior (no env var set) is unchanged — PKCE auth is used as before 🤖 Generated with Claude Code flyteorg/flyte-sdk