Add DNS information

Enable setting DNS servers in
the deployment.

confluent_server/confluent/config/attributes.py

@@ -484,4 +484,7 @@ node = {
         'description': ('Fingerprint of the SSH key of the OS running on the '
                         'system.'),
     },
+    'services.dns': {
+        'description': 'DNS Server or servers to provide to node',
+    },
 }

confluent_server/confluent/selfservice.py

@@ -59,7 +59,8 @@ def handle_request(env, start_response):
         ncfg = netutil.get_nic_config(cfg, nodename, serverip=myip)
         if ncfg['prefix']:
             ncfg['ipv4_netmask'] = netutil.cidr_to_mask(ncfg['prefix'])
-        deployinfo = cfg.get_node_attributes(nodename, ('deployment.*', 'crypted.rootpassword'))
+        deployinfo = cfg.get_node_attributes(
+            nodename, ('deployment.*', 'crypted.rootpassword', 'services.*'))
         deployinfo = deployinfo.get(nodename, {})
         profile = deployinfo.get(
             'deployment.pendingprofile', {}).get('value', '')
@@ -85,6 +86,10 @@ def handle_request(env, start_response):
                     currtzvintage = time.time()
                     ncfg['timezone'] = currtz
                     break
+        ncfg['nameservers'] = []
+        for dns in deployinfo.get(
+                'services.dns', {}).get('value', '').split(','):
+            ncfg['nameservers'].append(dns)
         start_response('200 OK', (('Content-Type', retype),))
         yield dumper(ncfg)
     elif env['PATH_INFO'] == '/self/sshcert':

misc/confluent-initqueue.sh.rh8

@@ -60,4 +60,18 @@ else
     v4nm=${v4nm#ipv4_netmask: }
     echo ip=$v4addr::$v4gw:$v4nm:$nodename:$ifname:none >> /etc/cmdline.d/01-confluent.conf
 fi
+nameserversec=0
+while read -r entry; do
+    if [ $nameserversec = 1 ]; then
+        if [[ $entry == "-"* ]]; then
+            echo nameserver=${entry#- } >> /etc/cmdline.d/01-confluent.conf
+            continue
+        fi
+    fi
+    nameserversec=0
+    if [ ${entry%:*} = "nameservers" ]; then
+        nameserversec=1
+        continue
+    fi
+done < /tmp/confluent.deploycfg