Description

Since the APM Server we want to benchmark will be running in ESS (generally gcp-us-west2 or gcp-europe-west1 since those are the Cloud-first test regions), the apmbench binary should be run as close to it as possible. For that purpose, we should create a Terraform module which:

• Creates a VM with a CPU intensive profile (since there's going to be a decent amount of concurrency when running a medium/high number of -agents flag). c6i.4xlarge or c6i.2xlarge have worked well in the tests I've run.
• Uploads a file with all the necessary environment variables exported which is then read or sourced before apmbench is executed, so it has the credentials.
• Uploads a compiled apmbench which is compatible with the remote VM architecture.
• Enables expvar and pprof (has to be done through the Fleet API).