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Brad Fitzpatrick 87a74c3aa2 tsnet: make workload identity federation opt-in

The tailscale.com/wif package brings in the AWS SDK
(github.com/aws/aws-sdk-go-v2/{config,sts,...} and github.com/aws/smithy-go)
to support fetching ID tokens from AWS IMDS for workload identity
federation. Until now, tsnet pulled this in unconditionally via
feature/condregister/identityfederation, costing ~70 unwanted deps for
every tsnet program whether or not it uses workload identity federation.

These AWS SDK deps were originally removed from tsnet on 2025-09-29 by
commit 69c79cb9f ("ipn/store, feature/condregister: move AWS + Kube
store registration to condregister"). They were then accidentally added
back on 2026-01-14 by commit 6a6aa805d ("cmd,feature: add identity
token auto generation for workload identity", PR #18373) when the new
wif package was wired into tsnet via feature/identityfederation.

Drop the blanket import. tsnet programs that want workload identity
federation now opt in with:

    import _ "tailscale.com/feature/identityfederation"

The hook lookup in resolveAuthKey already uses GetOk and degrades
gracefully when the feature isn't linked, so existing programs that
don't use workload identity federation see no behavior change. The
tailscale CLI still imports the condregister wrapper directly, so its
behavior is also unchanged.

Lock this in with TestDeps additions: tailscale.com/wif as a BadDep,
plus substring checks in OnDep that fail on any github.com/aws/ or
k8s.io/ dependency creeping back in.

Also, switch cmd/gitops-pusher from the condregister wrapper to a
direct import of feature/identityfederation: gitops-pusher's auth flow
calls HookExchangeJWTForTokenViaWIF directly, so it shouldn't be
subject to the ts_omit_identityfederation build tag.

Updates #12614

Change-Id: I70599f2bdd4d3666b26a859d5b76caa5d6b94507
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

2026-05-06 18:43:45 -07:00

.gitignore

cmd/gitops-pusher: add etag cache file for the three version problem (#5124 )

2022-07-22 15:07:38 -04:00

cache.go

all: remove AUTHORS file and references to it

2026-01-23 15:49:45 -08:00

gitops-pusher_test.go

cmd/vet: add subtestnames analyzer; fix all existing violations

2026-04-05 15:52:51 -07:00

gitops-pusher.go

tsnet: make workload identity federation opt-in

2026-05-06 18:43:45 -07:00

README.md

.github,cmd/gitops-pusher: update to checkout@v4

2023-09-04 15:12:57 -07:00

README.md

gitops-pusher

This is a small tool to help people achieve a GitOps workflow with Tailscale ACL changes. This tool is intended to be used in a CI flow that looks like this:

name: Tailscale ACL syncing

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

jobs:
  acls:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4
      
      - name: Setup Go environment
        uses: actions/setup-go@v3.2.0
        
      - name: Install gitops-pusher
        run: go install tailscale.com/cmd/gitops-pusher@latest
              
      - name: Deploy ACL
        if: github.event_name == 'push'
        env:
          TS_API_KEY: ${{ secrets.TS_API_KEY }}
          TS_TAILNET: ${{ secrets.TS_TAILNET }}
        run: |
          ~/go/bin/gitops-pusher --policy-file ./policy.hujson apply

      - name: ACL tests
        if: github.event_name == 'pull_request'
        env:
          TS_API_KEY: ${{ secrets.TS_API_KEY }}
          TS_TAILNET: ${{ secrets.TS_TAILNET }}
        run: |
          ~/go/bin/gitops-pusher --policy-file ./policy.hujson test

Change the value of the --policy-file flag to point to the policy file on disk. Policy files should be in HuJSON format.