mimergel / sap-hana-vm Goto Github PK

Hi,

I want to configure my swap per type of machine, and came upon a block of code I do not quite understand:

- include_tasks: swap.yml
  loop: "{{ sap_swap }}"
  when: item.tier == "HANA" or item.tier == "all"

I investigated sap_swap, which is an array with all/HANA, with 2 different swap sizes.

sap_swap:
  - { tier: 'all',  swap_size_mb: '20480' }
  - { tier: 'HANA', swap_size_mb: '2048' }

How does this script differentiate between machine "tiers"? Won't the linked swap.yml that is being looped always apply the last value of this array? I don't see a reference to tiers anywhere.

- name:         "Ensure swapfile size"
  lineinfile:
    state:      present
    dest:       /etc/waagent.conf
    regexp:     'ResourceDisk.SwapSizeMB='
    line:       'ResourceDisk.SwapSizeMB={{ item.swap_size_mb }}'

I am probably missing something, but where is tier coming from and how is a VM identified as having one tier or another?