Prevent matrix builds running in parallel with DRONE_MAX_PROCS=2

[yellowmegaman]

Hello!
Is there a way i can prevent execution of matrix build when DRONE_MAX_PROCS is set to 2 ?

Problem is that i\m testing against single db and results are messed up, since two matrix builds are writing to db concurrently.

Hope i’m just blind and missed it in the docs =)

Thanks a lot in advance!

[bradrydzewski]

This is not possible.

Problem is that i\m testing against single db and results are messed up, since two matrix builds are writing to db concurrently.

For this reason, testing against a central database is not considered a best practice. We recommend using the services section to start a fresh, isolated database instance for your testing. Further reading:

• http://docs.drone.io/services/
• http://docs.drone.io/mysql-example/
• http://docs.drone.io/postgres-example/

Alternatively, you can use conditions to only execute your database tests for a single axis of your matrix. Further reading:

• http://docs.drone.io/conditional-steps/
• http://docs.drone.io/conditional-steps/#matrix

[yellowmegaman]

That’s reasonable, i guess. Thank you!