Feat(eos_cli_config_gen): Add support for ip name server groups

ansible_collections/arista/avd/molecule/eos_cli_config_gen/documentation/devices/host1.md

@@ -9,6 +9,7 @@
   - [DNS Domain](#dns-domain)
   - [IP Domain-list](#ip-domain-list)
   - [IP Name Servers](#ip-name-servers)
+  - [IP Name Server Groups](#ip-name-server-groups)
   - [Domain Lookup](#domain-lookup)
   - [Clock Settings](#clock-settings)
   - [NTP](#ntp)
@@ -421,6 +422,62 @@ ip name-server 2001:db8::2 priority 0
 ip name-server vrf TEST 2001:db8::2 priority 3
 ```
 
+### IP Name Server Groups
+
+#### IP Name Server Groups Summary
+
+##### mynameserver0
+
+| IP Address | VRF | Priority |
+| ---------- | --- | -------- |
+| 1.1.1.1 | default | - |
+| 2.2.2.2 | default | 1 |
+| 8.8.8.8 | default | - |
+
+##### mynameserver1
+
+DNS Domain : arista.avd.com
+
+IP Domain List : domain-list1
+
+| IP Address | VRF | Priority |
+| ---------- | --- | -------- |
+| 1.1.1.1 | default | - |
+| 2.2.2.1 | vrf1 | - |
+| 2.2.2.2 | vrf1 | 1 |
+| 2.2.2.4 | vrf1 | 4 |
+| 2.2.2.6 | b_vrf | 3 |
+| 2.2.2.7 | a_vrf | 3 |
+| 8.8.8.8 | vrf1 | - |
+
+##### mynameserver2
+
+DNS Domain : anta.avd.com
+
+#### IP Name Server Groups Device Configuration
+
+```eos
+!
+ip name-server group mynameserver0
+   name-server vrf default 1.1.1.1
+   name-server vrf default 8.8.8.8
+   name-server vrf default 2.2.2.2 priority 1
+!
+ip name-server group mynameserver1
+   name-server vrf default 1.1.1.1
+   name-server vrf vrf1 2.2.2.1
+   name-server vrf vrf1 8.8.8.8
+   name-server vrf vrf1 2.2.2.2 priority 1
+   name-server vrf a_vrf 2.2.2.7 priority 3
+   name-server vrf b_vrf 2.2.2.6 priority 3
+   name-server vrf vrf1 2.2.2.4 priority 4
+   dns domain arista.avd.com
+   ip domain-list domain-list1
+!
+ip name-server group mynameserver2
+   dns domain anta.avd.com
+```
+
 ### Domain Lookup
 
 #### DNS Domain Lookup Summary
@@ -2828,6 +2885,10 @@ monitor server radius
 | Name | Interfaces |
 | ---- | ---------- |
 
+##### Name-server
+
+Name-server Group: mynameserver1
+
 ### Monitor Connectivity Device Configuration
 
 ```eos
@@ -2869,6 +2930,7 @@ monitor connectivity
          url https://server2.local.com
    !
    vrf yellow
+   name-server group mynameserver1
    interval 5
    no shutdown
    interface set GLOBAL_SET Ethernet1-4

ansible_collections/arista/avd/molecule/eos_cli_config_gen/intended/configs/host1.cfg

@@ -417,6 +417,25 @@ monitor server radius
    probe threshold failure 100
    probe method access-request username arista password 7 141600021F102B
 !
+ip name-server group mynameserver0
+   name-server vrf default 1.1.1.1
+   name-server vrf default 8.8.8.8
+   name-server vrf default 2.2.2.2 priority 1
+!
+ip name-server group mynameserver1
+   name-server vrf default 1.1.1.1
+   name-server vrf vrf1 2.2.2.1
+   name-server vrf vrf1 8.8.8.8
+   name-server vrf vrf1 2.2.2.2 priority 1
+   name-server vrf a_vrf 2.2.2.7 priority 3
+   name-server vrf b_vrf 2.2.2.6 priority 3
+   name-server vrf vrf1 2.2.2.4 priority 4
+   dns domain arista.avd.com
+   ip domain-list domain-list1
+!
+ip name-server group mynameserver2
+   dns domain anta.avd.com
+!
 platform trident mmu queue profile mc_example_profile
     egress unicast queue 1 reserved bytes 0
     egress unicast queue 2 reserved cells 0
@@ -3967,6 +3986,7 @@ monitor connectivity
          url https://server2.local.com
    !
    vrf yellow
+   name-server group mynameserver1
    interval 5
    no shutdown
    interface set GLOBAL_SET Ethernet1-4

ansible_collections/arista/avd/molecule/eos_cli_config_gen/inventory/host_vars/host1/ip-name-server-groups.yml

@@ -0,0 +1,37 @@
+---
+ip_name_server_groups:
+  - name: mynameserver1
+    ip_domain_list: domain-list1
+    dns_domain: arista.avd.com
+    name_servers:
+      - ip_address: 8.8.8.8
+        vrf: vrf1
+      - ip_address: 1.1.1.1
+        vrf: default
+      - ip_address: 2.2.2.2
+        vrf: vrf1
+        priority: 1
+      - ip_address: 2.2.2.1
+        vrf: vrf1
+      - ip_address: 2.2.2.4
+        vrf: vrf1
+        priority: 4
+      - ip_address: 2.2.2.6
+        vrf: b_vrf
+        priority: 3
+      - ip_address: 2.2.2.7
+        vrf: a_vrf
+        priority: 3
+
+  - name: mynameserver0
+    name_servers:
+      - ip_address: 8.8.8.8
+        vrf: default
+      - ip_address: 1.1.1.1
+        vrf: default
+      - ip_address: 2.2.2.2
+        vrf: default
+        priority: 1
+
+  - name: mynameserver2
+    dns_domain: anta.avd.com

ansible_collections/arista/avd/molecule/eos_cli_config_gen/inventory/host_vars/host1/monitor-connectivity.yml

@@ -8,6 +8,7 @@ monitor_connectivity:
     - name: HOST_SET
       interfaces: Loopback2-4, Loopback10-12
   local_interfaces: GLOBAL_SET
+  name_server_group: mynameserver1
   hosts:
     - name: server1
       description: server1_connectivity_monitor

python-avd/pyavd/_eos_cli_config_gen/j2templates/documentation/ip-name-server-groups.j2

@@ -0,0 +1,38 @@
+{#
+ Copyright (c) 2023-2025 Arista Networks, Inc.
+ Use of this source code is governed by the Apache License 2.0
+ that can be found in the LICENSE file.
+#}
+{# doc - ip name server groups #}
+{% if ip_name_server_groups is arista.avd.defined %}
+
+### IP Name Server Groups
+
+#### IP Name Server Groups Summary
+{%     for group in ip_name_server_groups | arista.avd.natural_sort("name") %}
+
+##### {{ group.name }}
+{%         if group.dns_domain is arista.avd.defined %}
+
+DNS Domain : {{ group.dns_domain }}
+{%         endif %}
+{%         if group.ip_domain_list is arista.avd.defined %}
+
+IP Domain List : {{ group.ip_domain_list }}
+{%         endif %}
+{%         if group.name_servers is arista.avd.defined %}
+
+| IP Address | VRF | Priority |
+| ---------- | --- | -------- |
+{%             for server in group.name_servers | arista.avd.natural_sort("ip_address") %}
+| {{ server.ip_address }} | {{ server.vrf }} | {{ server.priority | arista.avd.default('-') }} |
+{%             endfor %}
+{%         endif %}
+{%     endfor %}
+
+#### IP Name Server Groups Device Configuration
+
+```eos
+{%     include 'eos/ip-name-server-groups.j2' %}
+```
+{% endif %}

python-avd/pyavd/_eos_cli_config_gen/j2templates/documentation/management.j2

@@ -42,6 +42,8 @@
 {%     include 'documentation/domain-list.j2' %}
 {## IP Name Servers #}
 {%     include 'documentation/ip-name-servers.j2' %}
+{## IP Name Server Group ##}
+{%     include 'documentation/ip-name-server-groups.j2' %}
 {## Domain Lookup #}
 {%     include 'documentation/ip-domain-lookup.j2' %}
 {## Clock #}

python-avd/pyavd/_eos_cli_config_gen/j2templates/documentation/monitor-connectivity.j2

@@ -81,6 +81,12 @@
 {%             endif %}
 {%         endfor %}
 {%     endif %}
+{%     if monitor_connectivity.name_server_group is arista.avd.defined %}
+
+##### Name-server
+
+Name-server Group: {{ monitor_connectivity.name_server_group }}
+{%     endif %}
 
 ### Monitor Connectivity Device Configuration
 

python-avd/pyavd/_eos_cli_config_gen/j2templates/eos-intended-config.j2

@@ -88,6 +88,8 @@
 {% include 'eos/mcs-client.j2' %}
 {# monitor server radius #}
 {% include 'eos/monitor-server-radius.j2' %}
+{# ip name-server groups #}
+{% include 'eos/ip-name-server-groups.j2' %}
 {# platform - trident#}
 {% include 'eos/platform-trident.j2' %}
 {# IP NAT - Part 1#}

python-avd/pyavd/_eos_cli_config_gen/j2templates/eos/ip-name-server-groups.j2

@@ -0,0 +1,32 @@
+{#
+ Copyright (c) 2023-2025 Arista Networks, Inc.
+ Use of this source code is governed by the Apache License 2.0
+ that can be found in the LICENSE file.
+#}
+{% for name_server_group in ip_name_server_groups | arista.avd.natural_sort("name") %}
+!
+ip name-server group {{ name_server_group.name }}
+{%     set all_name_servers = [] %}
+{%     for server in name_server_group.name_servers | arista.avd.default([]) %}
+{%         set name_server = {} %}
+{%         if server.priority is not arista.avd.defined %}
+{%             do name_server.setdefault('priority', 0) %}
+{%         endif %}
+{%         do name_server.update(server) %}
+{%         do all_name_servers.append(name_server) %}
+{%     endfor %}
+{%     for server in all_name_servers | arista.avd.natural_sort("ip_address") | arista.avd.natural_sort("vrf") | arista.avd.natural_sort("priority") %}
+{%         if server.priority != 0 %}
+{%             set name_server_cli = "name-server vrf " ~ server["vrf"] ~ " " ~ server["ip_address"] ~ " priority " ~ server["priority"] %}
+{%         else %}
+{%             set name_server_cli = "name-server vrf " ~ server["vrf"] ~ " " ~ server["ip_address"] %}
+{%         endif %}
+   {{ name_server_cli }}
+{%     endfor %}
+{%     if name_server_group.dns_domain is arista.avd.defined %}
+   dns domain {{ name_server_group.dns_domain }}
+{%     endif %}
+{%     if name_server_group.ip_domain_list is arista.avd.defined %}
+   ip domain-list {{ name_server_group.ip_domain_list }}
+{%     endif %}
+{% endfor %}

python-avd/pyavd/_eos_cli_config_gen/j2templates/eos/monitor-connectivity.j2

@@ -57,6 +57,9 @@ monitor connectivity
 {%             endfor %}
 {%         endif %}
 {%     endfor %}
+{%     if monitor_connectivity.name_server_group is arista.avd.defined %}
+   name-server group {{ monitor_connectivity.name_server_group }}
+{%     endif %}
 {%     if monitor_connectivity.interval is arista.avd.defined %}
    interval {{ monitor_connectivity.interval }}
 {%     endif %}