how to run a single instance of teamcity build across all agents

Question

We have a teamcity set-up on with multiple agents. There is one particular build which uses some underlying resources and services of a particular environment. ( say uat)

We want that this build should not run n parallel to avoid resource contention. i.e. only a single running build at a time. How can I achieve this ?

Thanks

Answer 1

Under the project, setup a shared resource:

Then under the build configurations you don't wish to be able to run in parallel add a build feature and select the resource you just created and "Write Lock":

This will mean any extra builds triggered will stay in the build queue and will not be allowed to run concurrently.