Workflows
How many jobs can a matrix fan out to?
Quick answer
GitHub caps a single matrix at 256 jobs per workflow run.
The detail that matters
Long before 256 you should ask whether every combination is worth testing. Use include and exclude to keep the matrix intentional.
Your next build could be twice as fast, at half the price
Start free. Migrating away is the same one line, and we publish that diff too.
Related
How do I reproduce a CI failure locally?Match the runner image, then SSH into a live runner if the failure only appears in CI.Can I SSH into a runner?Yes. runnerhut supports opening a debug session on a running job with an authorised SSH key.Can I mix GitHub-hosted and managed runners?Yes. runs-on is per job, so different jobs in one workflow can use different providers.How do I change the runner?Edit the runs-on value for the job. Nothing else needs to change.