Add GITLAB_SIDEKIQ_MAX_REPLICAS environment variable

Marco Gregoriusrequested to merge
mg/sidekiq-max-replicas-env-var into master

What does this MR do?

Add GITLAB_SIDEKIQ_MAX_REPLICAS environment variable for Sidekiq to come up with a default concurrency limit based on the shard's capacity

Related issues

https://gitlab.com/gitlab-com/gl-infra/data-access/durability/team/-/issues/215

gitlab-com/gl-infra/tenant-scale/tenant-services/team#237 (closed)

Author checklist

For general guidance, please follow our Contributing guide.

Required

For anything in this list which will not be completed, please provide a reason in the MR discussion.

  • Merge Request Title and Description are up to date, accurate, and descriptive.
  • MR targeting the appropriate branch.
  • MR has a green pipeline.
  • Documentation created/updated.
  • Tests added/updated, and test plan for scenarios not covered by automated tests.
  • Equivalent MR/issue for omnibus-gitlab opened.

Reviewers checklist

Edited by Jason Plum

Merge request reports