DAOSGCP-82 Changing defaults and default behaviors

[cboneti]

The goal is to supporte better integrations and provide a better
customer experience by adding good defaults and default behavior
to the server and client modules (along with the various examples that
depend on them). For now, the server defaults to optimizing for TCO.

[Kmannth]

Overall looks like great changes and some of the new tickets make more sense.

As a start of Dev Cycle type patch I think these changes are good.

[Kmannth]

New line issue?

[cboneti]

Fixed.

[markaolson]

Looks great!

[Kmannth]

@cboneti
When testing the /google-cloud-daos/terraform/examples/daos_cluster setup.

After some work with terraform.tfvars.tco.example I have:

[kmannthe@colts80-clx25 daos_cluster]$ cat terraform.tfvars
project_id                 = "mine"
region                     = "us-central1"
zone                       = "us-central1-f"

server_number_of_instances = 2
server_machine_type        = "n2-custom-36-215040"
server_os_disk_size_gb     = 20
server_daos_disk_count     = 16
server_daos_crt_timeout    = 300
server_daos_scm_size       = 180

client_number_of_instances = 4
client_preemptible         = "true"
client_mig_name            = "daos-client"
client_template_name       = "daos-client"
client_instance_base_name  = "daos-client"
client_machine_type        = "c2-standard-16"
client_os_family           = "daos-client-hpc-centos-7"
client_os_project          = "mine"
client_os_disk_type        = "pd-ssd"
client_os_disk_size_gb     = 20

I get

[kmannthe@colts80-clx25 daos_cluster]$ terraform apply
var.client_daos_agent_yml
  YAML to configure the daos agent.

  Enter a value

Can you confirm how this daos_cluster example should work?

[cboneti]

Hi Keith, there was a bug in the cluster example, as the client yaml inputs should be automatically set by the servers yml outputs. I fixed that now and pushed a new version.

[Kmannth]

The 4 client 4 server config from "daos_cluster" is working.

The Client YML syntax needs to be fixed up . dmg command don't run out of the box as is.

[Kmannth]

DMG command are working on the default 4x4 setup in my test setup. Looks good to land to me.