Exit if a DNS A or AAAA record doesn't exist for the replica we are preparing.

Without this it is possible to prepare a replica for a host that doesn't
exist in DNS. The result when this replica file is installed is that
replication will fail because the master won't be able to communicate
to the replica by name.

ticket 680

1 files changed, 22 insertions, 0 deletions

diff --git a/install/tools/ipa-replica-prepare b/install/tools/ipa-replica-prepare
index 0c3388de9..908c50a13 100755
--- a/install/tools/ipa-replica-prepare
+++ b/install/tools/ipa-replica-prepare
@@ -245,6 +245,22 @@ def main():
     if not options.pkinit_pkcs12 and not certs.ipa_self_signed():
         options.setup_pkinit = False
 
+    try:
+        installutils.verify_fqdn(replica_fqdn)
+    except RuntimeError, e:
+        msg = str(e)
+        if msg.startswith('Unable to resolve host name'):
+            if options.ip_address is None:
+                if bindinstance.dns_container_exists(api.env.host,
+                    api.env.basedn):
+                    msg += '\nAdd the --ip-address argument to create a DNS entry.'
+                sys.exit(msg)
+            else:
+                # The host doesn't exist in DNS but we're adding it.
+                pass
+        else:
+            sys.exit(msg)
+
     if options.ip_address:
         if not bindinstance.dns_container_exists(api.env.host, api.env.basedn):
             print "You can't add a DNS record because DNS is not set up."
@@ -255,6 +271,12 @@ def main():
 
     check_ipa_configuration(api.env.realm)
 
+    if not options.ip_address:
+        try:
+            api.Command['dns_resolve'](replica_fqdn)
+        except errors.NotFound:
+            sys.exit("Neither an A nor AAAA record for host '%s' does not exist in DNS.\nUse the --ip-address option to add DNS entries for the replica." % replica_fqdn)
+
     if api.env.host == replica_fqdn:
         print "You can't create a replica on itself"
         sys.exit(1)