Nodepool is currently limited to 12 instances. I would like to get it raised to 20 instances.
Adding a couple more to help with the contention we have observed during peak hours (SF morning / Europe evening) and reach a round number of 20 instances.
We have already deleted 9 m1.large instances from the pool of permanent slaves (T148183) and will be able to delete a couple more once the HHVM/PHP jobs are moved.
We spawn m1.medium which have:
The Nodepool limit (max-server) would be bumped from 12 to 20. On OpenStack side, the quota of instances has to take in account the automatic refresh of snapshot images or two more instances.
There might be concern with disk space consumption. Though as I understand it disk space is copy on write and not filled until the instance fill the disk.
Looking at the instances: