Inteface level DNS and search information is not getting added to ifcfg file

[ani-sinha]

I have reported this here:
#4756 (comment)

With a config like this:

              config:
                - name: eth0
                  subnets:
                    - address: 10.0.2.2/24
                      gateway: 10.0.2.1
                      type: static
                  type: physical
                - type: nameserver
                  interface: eth0
                  address:
                    - 8.8.8.8
                    - 4.4.4.4
                  search:
                    - example.com
              version: 1

We do not see interface level DNS and search information in ifcfg file:

[cloud-user@provisioner ~]$ cat /etc/resolv.conf 
# Generated by NetworkManager
search ocp.openstack.lab
[cloud-user@provisioner ~]$  nmcli -f NAME,FILENAME c show
NAME         FILENAME                                               
System eth0  /etc/sysconfig/network-scripts/ifcfg-eth0              
lo           /run/NetworkManager/system-connections/lo.nmconnection 
[cloud-user@provisioner ~]$ cat /etc/sysconfig/network-scripts/ifcfg-eth0 
# Created by cloud-init automatically, do not edit.
#
AUTOCONNECT_PRIORITY=120
BOOTPROTO=none
DEFROUTE=yes
DEVICE=eth0
GATEWAY=10.0.2.1
IPADDR=10.0.2.2
NETMASK=255.255.255.0
ONBOOT=yes
TYPE=Ethernet
USERCTL=no

Log file is attached:
cloud-init.log

We may need to modify sysconfig renderer?

[ani-sinha]

@TheRealFalcon for your attention.

[ani-sinha]

Looking at https://cloudinit.readthedocs.io/en/21.1/topics/network-config-format-v1.html#nameserver, only difference I see is that in config we have an additional interface: eth0 under type: nameserver . Is this not allowed in v1 @TheRealFalcon ?

[TheRealFalcon]

Cloud-init's way of rendering DNS to sysconfig has always been via resolv.conf, though I agree it would be better placed in ifcfg files.