Uploaded image for project: 'PHP Driver: Library'
  1. PHP Driver: Library
  2. PHPLIB-717

Test Serverless behind a load balancer to prevent test breakage

    • Type: Icon: Task Task
    • Resolution: Fixed
    • Priority: Icon: Critical - P2 Critical - P2
    • 1.12.0
    • Affects Version/s: None
    • Component/s: Spec Comp
    • None

      Summary

      TheĀ serverless test suite is currently run directly against Atlas proxies, as this allows drivers to run certain test against a single proxy if required (e.g. if a failpoint needs to be tripped) and target failpoints to individual proxies (e.g. for the mongos pinning tests). However, in the near future the proxies will be moving behind a load balancer, which makes both of these impossible.

      The existing load balancer tests avoid this issue by spinning up two different load balancers, one that fronts a single mongos and one that fronts multiple, and conditionally uses each as necessary. We could consider doing something similar for serverless, though it would require changes Atlas side.

      Motivation
      Without a solution to this problem, drivers testing of serverless will be limited.

      Does this ticket have a required timeline? What is it?
      All serverless instances will be moving behind load balancers in ~1 month.

      Is this ticket only for tests?

      Yes

      Notes for Language Authors

      Drivers that already implemented Serverless testing before load balancing must opt in to testing load balanced Serverless instances.

      • Pass LOADBALANCED=ON as an environment variable to .evergreen/serverless/create-instance.sh to create a load balanced AWS backed instance.
      • Use the new expansions SINGLE_ATLASPROXY_LB_URI and MULTI_ATLASPROXY_LB_URI in place of SINGLE_LB_MONGOS_URI and MULTI_LB_MONGOS_URI in load balancer tests.
      • See the Go POC for an example of updating existing Serverless.

            Assignee:
            jmikola@mongodb.com Jeremy Mikola
            Reporter:
            backlog-server-pm Backlog - Core Eng Program Management Team
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

              Created:
              Updated:
              Resolved: