03-04-2015
Can you show us:-
- The content of /etc/resolv.conf
- The content of /etc/nsswitch.conf
If you have completely turned off DNS, then you may be unable to resolv anything. If there is a slow login, then this is because the DNS servers are incorrectly configured. I've seen this before and there is about a 30 second login delay as the unix server tries to look up the incoming IP address for logging purposes.
There is a way to limit the timeout, but the real way to fix this is to have the DNS servers respond properly and say "unknown" straight away rather than panic and say nothing. This can be because they are looking to pass on the query to another DNS server that is higher up the tree (so to speak)
Thanks, in advance,
Robin
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LEARN ABOUT CENTOS
ipa-dns-install
ipa-dns-install(1) IPA Manual Pages ipa-dns-install(1)
NAME
ipa-dns-install - Add DNS as a service to an IPA server
SYNOPSIS
ipa-dns-install [OPTION]...
DESCRIPTION
Adds DNS as an IPA-managed service. This requires that the IPA server is already installed and configured.
OPTIONS
-p DM_PASSWORD, --ds-password=DM_PASSWORD
The password to be used by the Directory Server for the Directory Manager user
-d, --debug
Enable debug logging when more verbose output is needed
--ip-address=IP_ADDRESS
The IP address of the IPA server. If not provided then this is determined based on the hostname of the server.
--forwarder=FORWARDER
A forwarder is a DNS server where queries for a specific non-resolvable address can be directed. To define multiple forwarders use
multiple instances of --forwarder
--no-forwarders
Do not add any DNS forwarders, send non-resolvable addresses to the DNS root servers.
--reverse-zone=REVERSE_ZONE
The reverse DNS zone to use
--no-reverse
Do not create new reverse DNS zone. If used on a replica and a reverse DNS zone already exists for the subnet, it will be used.
--zonemgr
The e-mail address of the DNS zone manager. Defaults to hostmaster@DOMAIN
-U, --unattended
An unattended installation that will never prompt for user input
EXIT STATUS
0 if the installation was successful
1 if an error occurred
IPA
Jun 28, 2012 ipa-dns-install(1)