Merge pull request #4218 from nvollmar/T6927

T6927: adds option to set container name server

interface-definitions/container.xml.in

@@ -275,6 +275,7 @@
             </properties>
             <defaultValue>64</defaultValue>
           </leafNode>
+          #include <include/name-server-ipv4-ipv6.xml.i>
           <tagNode name="network">
             <properties>
               <help>Attach user defined network to container</help>

smoketest/scripts/cli/test_container.py

@@ -96,6 +96,21 @@ def test_basic(self):
         tmp = cmd(f'sudo podman exec -it {cont_name} sysctl kernel.msgmax')
         self.assertEqual(tmp, 'kernel.msgmax = 4096')
 
+    def test_name_server(self):
+        cont_name = 'dns-test'
+        name_server = '192.168.0.1'
+        self.cli_set(base_path + ['name', cont_name, 'allow-host-networks'])
+        self.cli_set(base_path + ['name', cont_name, 'image', cont_image])
+        self.cli_set(base_path + ['name', cont_name, 'name-server', name_server])
+
+        self.cli_commit()
+
+        n = cmd_to_json(f'sudo podman inspect {cont_name}')
+        self.assertEqual(n['HostConfig']['Dns'][0], name_server)
+
+        tmp = cmd(f'sudo podman exec -it {cont_name} cat /etc/resolv.conf')
+        self.assertIn(name_server, tmp)
+
     def test_cpu_limit(self):
         cont_name = 'c2'
 

src/conf_mode/container.py

@@ -363,9 +363,14 @@ def generate_run_arguments(name, container_config):
     if 'allow_host_pid' in container_config:
       host_pid = '--pid host'
 
+    name_server = ''
+    if 'name_server' in container_config:
+        for ns in container_config['name_server']:
+            name_server += f'--dns {ns}'
+
     container_base_cmd = f'--detach --interactive --tty --replace {capabilities} --cpus {cpu_quota} {sysctl_opt} ' \
                          f'--memory {memory}m --shm-size {shared_memory}m --memory-swap 0 --restart {restart} ' \
-                         f'--name {name} {hostname} {device} {port} {volume} {env_opt} {label} {uid} {host_pid}'
+                         f'--name {name} {hostname} {device} {port} {name_server} {volume} {env_opt} {label} {uid} {host_pid}'
 
     entrypoint = ''
     if 'entrypoint' in container_config: