Improve user awareness about dnsconfig

Global DNS configuration is a nice tool to maintain a common DNS
settings stored in LDAP which are then used for all enrolled IPA
servers. However, the settings stored in LDAP override local
settings in named.conf on DNS servers.

This patch adds more information about global DNS configuration
options in install scripts and DNS module help.

https://fedorahosted.org/freeipa/ticket/2525

1 files changed, 20 insertions, 0 deletions

diff --git a/ipaserver/install/bindinstance.py b/ipaserver/install/bindinstance.py
index a37a2930..ba8b7b5c 100644
--- a/ipaserver/install/bindinstance.py
+++ b/ipaserver/install/bindinstance.py
@@ -637,6 +637,26 @@ class BindInstance(service.Service):
                 # remove also master NS record from the reverse zone
                 del_rr(rzone, "@", "NS", fqdn+".")
 
+    def check_global_configuration(self):
+        """
+        Check global DNS configuration in LDAP server and inform user when it
+        set and thus overrides his configured options in named.conf.
+        """
+        result = api.Command.dnsconfig_show()
+        global_conf_set = any(param in result['result'] for \
+                              param in api.Object['dnsconfig'].params)
+
+        if not global_conf_set:
+            print "Global DNS configuration in LDAP server is empty"
+            print "You can use 'dnsconfig-mod' command to set global DNS options that"
+            print "would override settings in local named.conf files"
+            return
+
+        print "Global DNS configuration in LDAP server is not empty"
+        print "The following configuration options override local settings in named.conf:"
+        print ""
+        textui = ipalib.cli.textui()
+        api.Command.dnsconfig_show.output_for_cli(textui, result, None, reverse=False)
 
     def uninstall(self):
         if self.is_configured():