Give a short summary of changes on ghpc deploy/destroy

[yaroslavvb]

Right now ghpc output is too verbose. Destroying a cluster like this yaml prints >40 pages of changes (my tmux ran out of buffer at 40 pages).

Ideally there's be a way to see what exactly is being destroyed that fits on a couple of screens

[nick-stroud]

Thank you for your bug report. I have investigated the issue and determined that it is not a bug, but rather a feature request.

I am moving this to the ideas-and-feature-request discussion where feature requests are collected.

One possible workaround would be to use a grep on terraform plan to summarize from a high level what is changing.

./ghpc create <blueprint> -w
terraform -chdir=<deployment>/<group> init
terraform -chdir=<deployment>/<group> plan | grep '# module'
# or alternatively for destroying
terraform -chdir=<deployment>/<group> plan -destroy | grep '# module'

This will reduce the output to 1 line for each resource changed. Example output for a random change I happen to be executing:

  # module.batch-job-base.local_file.job_template will be created
  # module.batch-job-batch.local_file.job_template will be created
  # module.batch-job-hpc.local_file.job_template will be created
  # module.batch-job-ubuntu.local_file.job_template will be created
  # module.batch-login.google_compute_instance_from_template.batch_login will be destroyed
  # module.wait2.null_resource.wait_for_startup will be destroyed
  # module.batch-login.module.login_startup_script.google_storage_bucket.configs_bucket[0] will be destroyed
  # module.batch-login.module.login_startup_script.google_storage_bucket_object.scripts["0-install_ddn_lustre_client.sh"] will be destroyed
  # module.batch-login.module.login_startup_script.google_storage_bucket_object.scripts["0-mount-ddn-lustre.sh"] will be destroyed
  # module.batch-login.module.login_startup_script.google_storage_bucket_object.scripts["1-install_ddn_lustre_client.sh"] will be destroyed
  # module.batch-login.module.login_startup_script.google_storage_bucket_object.scripts["1-mount-ddn-lustre.sh"] will be destroyed
  # module.batch-login.module.login_startup_script.google_storage_bucket_object.scripts["README.md"] will be destroyed
  # module.batch-login.module.login_startup_script.google_storage_bucket_object.scripts["cloud-batch-cent-base.json"] will be destroyed
  # module.batch-login.module.login_startup_script.google_storage_bucket_object.scripts["cloud-batch-cent-hpc.json"] will be destroyed
  # module.batch-login.module.login_startup_script.google_storage_bucket_object.scripts["passed_startup_script.sh"] will be destroyed
  # module.batch-login.module.login_startup_script.random_id.resource_name_suffix will be destroyed