Loop for multiple drives about oci-cloudera HOT 8 CLOSED

Arg. My head hurts trying to make this work with:

• count
• node_count
• drive_count
  ...and a bunch of mod arithmetic. It looks like 0.12 is going to be out imminently. Thinking just wait for that... https://www.hashicorp.com/blog/hashicorp-terraform-0-12-preview-for-and-for-each

from oci-cloudera.

import math

#Variables
node_count=7
disk_count=5
availability_domains=3

#Nodes
print('i\tinstance\tad')
count=node_count
for i in range(0, count):
    instance=i
    availability_domain=i%availability_domains
    print(str(i) + '\t' + str(instance) + '\t\t' + str(availability_domain))

print('')

#Disks
print('i\tinstance\tvolume\tad')
count=node_count*disk_count
for i in range(0,count):
    instance_id = i%node_count
    availability_domain = i%node_count%availability_domains
    volume_id = math.floor(i/node_count)
    print(str(i) + '\t' + str(instance_id) + '\t\t' + str(volume_id) + '\t' + str(availability_domain))

from oci-cloudera.

This is really weird:

worker3 has the disk count0worker0-volume0 attached. They're both in AD 0=YVsm:PHX-AD-1

count = "${var.worker["node_count"] * var.worker["disk_count"]}"
35=7*5

count0worker0-volume0

availability_domain = "${lookup(data.oci_identity_availability_domains.availability_domains.availability_domains[count.index % var.worker["node_count"] % var.availability_domains], "name")}"
0%7%3=0

display_name = "count${count.index}worker${count.index%var.worker["node_count"]}-volume${floor(count.index / var.worker["node_count"])}"
Count - 0
worker - 0%7=0
volume - floor(0/7)=0

instance_id = "${oci_core_instance.worker.*.id[count.index % var.worker["node_count"]]}"
0%7=0

volume_id = "${oci_core_volume.worker.*.id[floor(count.index / var.worker["node_count"])]}"
floor(0/7)=0

from oci-cloudera.

from oci-cloudera.

This is the terraform generating this: https://github.com/cloud-partners/oci-cloudera-edh/blob/e8806d484be6b012bf8122a713e65f799eee1d99/production/worker.tf#L1-L38

from oci-cloudera.

Ran it again. I don't get it.

from oci-cloudera.

I think I got it. The volume id isn't per node, it's global. Whoops.

from oci-cloudera.

Woot!

from oci-cloudera.