From e39cc53d90175e3cae6805302f318a96bc0e1af1 Mon Sep 17 00:00:00 2001 From: Martin Basti Date: Tue, 13 Sep 2016 19:12:40 +0200 Subject: [PATCH] Catch DNS exceptions during emptyzones named.conf upgrade For some reasons named may not be runnig and this cause fail of this upgrade step. This step is not critical so only ERROR message with recommendation is shown. https://fedorahosted.org/freeipa/ticket/6205 Reviewed-By: Martin Babinsky --- ipaserver/install/server/upgrade.py | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/ipaserver/install/server/upgrade.py b/ipaserver/install/server/upgrade.py index 19ea8ca3c..b47d8fa45 100644 --- a/ipaserver/install/server/upgrade.py +++ b/ipaserver/install/server/upgrade.py @@ -11,6 +11,8 @@ import pwd import fileinput import sys +import dns.exception + import six from six.moves.configparser import SafeConfigParser @@ -840,9 +842,18 @@ def named_update_global_forwarder_policy(): 'forward_policy_conflict_with_empty_zones_handled', True ) - if not dnsutil.has_empty_zone_addresses(api.env.host): - # guess: local server does not have IP addresses from private ranges - # so hopefully automatic empty zones are not a problem + try: + if not dnsutil.has_empty_zone_addresses(api.env.host): + # guess: local server does not have IP addresses from private + # ranges so hopefully automatic empty zones are not a problem + return False + except dns.exception.DNSException as ex: + root_logger.error( + 'Skipping update of global DNS forwarder in named.conf: ' + 'Unable to determine if local server is using an ' + 'IP address belonging to an automatic empty zone. ' + 'Consider changing forwarding policy to "only". ' + 'DNS exception: %s', ex) return False if bindinstance.named_conf_get_directive(