Testing Autograph

We currently use Autograph to sign our files with a number of our signing formats. Occasionally the autograph team will ask us to test to make sure things are working properly.

Testing Autograph Stage

We currently use Autograph to sign our files with a number of our signing formats. In CI, we point at autograph-prod, to avoid having autograph-stage changes or availability affect production CI, nightlies, or releases.

However, sometimes the Autograph team needs to make changes to autograph-stage, and want us to verify that it still works for us. Here’s how.

Autograph-stage mar signing test

There is a tier 3 task that doesn’t run automatically. This task, mar-signing-autograph-stage-linux64-nightly/opt, can be added to a push that has run nightly builds and repackage tasks.

First, go to mozilla-central treeherder. Make sure you’re logged in (top right).

Find the push with the most recent finished successful nightly. (It may be easiest to search for nightly).

On this push, click the down-arrow at the top right of the push. Choose Add new jobs. The push will now show all the unscheduled jobs.

Find the autograph-stage mar-signing test job. It will be in the Linux x64 opt row, with the ms-stage(N) symbol. Click on it. It should change colors to a dark grey.

Go back up to the top right of the push. Choose Trigger New Jobs. Assuming you’ve selected the right job, and you have the right scopes, it should now create an add-new action task that triggers the autograph-stage mar-signing task.

You can either watch treeherder or the taskcluster task. The task will be in the on-push graph. The treeherder view may require you to enable tier 3 in the Tiers menu at the top right of the page.

Once the mar-signing-autograph-stage-linux64-nightly/opt task goes green, we know that autograph-stage has signed the mar, and signingscript has verified that the signature matches the autograph-stage mar public key. Report back to #autograph on irc that it has passed.

Testing Autograph Prod

Once we roll out to prod, we want to make sure everything still works.

Autograph-prod mar signing test

To test autograph-prod mar-signing, find a recent (but ideally not the most-recent) nightly graph. Find a mar-signing task in that graph.

To retrigger it via treeherder:

  • sign in to mozilla-central treeherder (top right of the page)
  • click on the task
  • find the ... menu in the lower left of the page, click on it
  • choose Custom Action
  • choose Retrigger
  • click Trigger in the lower right

(A retrigger here is preferable to a rerun, because it won’t affect chain of trust verification for the rest of the graph.)

Make sure this task runs green. If it goes green, then the task signed the mar file(s) via autograph-prod, and verified the signature matches the public key.