Specify the zone & only use the first DNS server

The hostnames can have dots in them so it's important to clarify which
zone they belong to.

Author: tomassedovic

fragments/add_dns_record.sh

@@ -20,7 +20,5 @@ fi
 
 HOSTNAME="$(hostname --fqdn)"
 
-for DNS_SERVER in %DNS_SERVERS%; do
-    # NOTE: the dot after the hostname is necessary
-    /usr/local/bin/update_dns  -s "$DNS_SERVER" -k "$DNS_UPDATE_KEY" "$HOSTNAME." "%IP_ADDRESS%"
-done
+# NOTE: the dot after the hostname is necessary
+/usr/local/bin/update_dns -z "%ZONE%" -s "%DNS_SERVER%" -k "$DNS_UPDATE_KEY" "$HOSTNAME." "%IP_ADDRESS%"

infra.yaml

@@ -411,7 +411,8 @@ resources:
       config:
         str_replace:
           params:
-            '%DNS_SERVERS%': {list_join: [" ", {get_param: dns_servers}]}
+            '%ZONE%': {get_param: domain_name}
+            '%DNS_SERVER%': {get_param: [dns_servers, 0]}
             '%DNS_UPDATE_KEY%': {get_param: dns_update_key}
             '%IP_ADDRESS%': {get_attr: [port, fixed_ips, 0, ip_address]}
           template: {get_file: fragments/add_dns_record.sh}

loadbalancer_dedicated.yaml

@@ -339,7 +339,8 @@ resources:
       config:
         str_replace:
           params:
-            '%DNS_SERVERS%': {list_join: [" ", {get_param: dns_servers}]}
+            '%ZONE%': {get_param: domain_name}
+            '%DNS_SERVER%': {get_param: [dns_servers, 0]}
             '%DNS_UPDATE_KEY%': {get_param: dns_update_key}
             '%IP_ADDRESS%': {get_param: floatingip}
           template: {get_file: fragments/add_dns_record.sh}

master.yaml

@@ -403,7 +403,8 @@ resources:
       config:
         str_replace:
           params:
-            '%DNS_SERVERS%': {list_join: [" ", {get_param: dns_servers}]}
+            '%ZONE%': {get_param: domain_name}
+            '%DNS_SERVER%': {get_param: [dns_servers, 0]}
             '%DNS_UPDATE_KEY%': {get_param: dns_update_key}
             '%IP_ADDRESS%': {get_attr: [port, fixed_ips, 0, ip_address]}
           template: {get_file: fragments/add_dns_record.sh}

node.yaml

@@ -514,7 +514,8 @@ resources:
       config:
         str_replace:
           params:
-            '%DNS_SERVERS%': {list_join: [" ", {get_param: dns_servers}]}
+            '%ZONE%': {get_param: domain_name}
+            '%DNS_SERVER%': {get_param: [dns_servers, 0]}
             '%DNS_UPDATE_KEY%': {get_param: dns_update_key}
             '%IP_ADDRESS%': {get_attr: [port, fixed_ips, 0, ip_address]}
           template: {get_file: fragments/add_dns_record.sh}