Multiple DNS Servers as variable

[stefanpinter]

Describe the bug
Hi! I want to add multiple IP addresses and nameservers via variables

To Reproduce

cat group_vars/all.yaml
dnsserver:
  - 208.67.222.222
  - 208.67.220.220

playbook:

      netplan_configuration: '{
        "network": {
          "ethernets": {
            "{{ ipv4_default_interface }}": {
              "addresses": [ "{{ ipv4_default_address }}/24" ],
              "dhcp4": false,
              "gateway4": "172.21.10.254",
              "nameservers": {
                "addresses": "{{ dnsserver }}"
              }
            }
          }
        }
      }'

the best that it does is this:

       nameservers:
            addresses: '[''208.67.222.222'', ''208.67.220.220'']'

all those single quotes should be gone

Expected behavior
create netplan.yaml with those nameservers

[stefanpinter]

ok, I did it like this - with two variables

cat group_vars/all.yaml
dns1: "208.67.222.222"
dns2: "208.67.220.220"

playbook:

"nameservers": {
                "addresses": [ "{{ dns1 }}","{{ dns2 }}" ]
              }

i guess this should be good enough for now

[stefanpinter]

ok, similar problem now... some of our servers have 1 IP addresses on the interface and some do have more
so this works perfectly fine:

        netplan_configuration: '{
          "network": {
            "ethernets": {
              "{{ ipv4_default_interface }}": {
                "addresses": [ "{{ ipv4_default_address }}" ],
                "dhcp4": false,
                "gateway4": "{{ ipv4_default_gateway }}",
                "nameservers": {
                  "addresses": [ "{{ dns1 }}","{{ dns2 }}" ]
                }
              }
            }
          }
        }'

how can I add ipv4_additional_address1 and ipv4_additional_address2 to this variable?
this is working of course, when both additional addresses are defined

 "addresses": [ "{{ ipv4_default_address }}", "{{ ipv4_additional_address1 }}", "{{ ipv4_additional_address2 }}" ],

but what if the host doesn't have additional addresses defined? I tried it with default(Omit) and default(None) but it does weird things

i feel dumb already, please help :D

[stefanpinter]

I restructured the thing now and add this block to every host_vars file and don't put it in the playbook.
the only thing I don't like about it, is, that the nameservers have to be set in every host_vars file

netplan_configuration:
  network:
    ethernets:
      ens18:
        addresses:
          - 10.20.30.105/24
          - 10.20.30.115/24
        dhcp4: false
        routes:
        -  to: default
           via: 10.20.30.254
        nameservers:
          addresses:
            - 208.67.222.222
            - 208.67.220.220

[stale]

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