Bind Dns Error Messages
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(or BIND or named)... sysquery: findns error (NXDOMAIN) on NS1.BOGUS.DOMAIN? It means that NS1.BOGUS.DOMAIN is the target of an NS record somewhere, but there's no A record for that name. The server that was asked about the address claims it doesn't even exist. NXDOMAIN means dns error message causes no such host or domain. Err/TO getting serial# for "the-domain.tld" Your secondary (or slave) is having dns error message windows 7 trouble getting a valid answer to the SOA query for the "the-domain.tld" zone. In order to know whether a zone transfer is necessary, a dns error message that the host does not exist slave will do an SOA query to get the serial number for the zone, and see if it has changed. (This is the refresh check.) Do you have the right addressed configured in your "masters { }" clause? There is probably dns error troubleshooting a problem with the master. Maybe the master(s) are not authoritative (or not configured as a master) for the zone. Maybe it couldn't load the zone because of a syntax error. Or maybe the master is unavailable or the connection timed out. Make sure that the slaves can connect to the primary on TCP port 53. (Also, you may want to check the log file on the master to see why the transfer is being refused.) Are you really a secondary?
Dns Error Codes
(If not, remove the entries from the configuration so your not the secondary for those zones.) has CNAME and other data (invalid) CNAMEs can't co-exist with other records (it defeats the purpose of defining a CNAME in the first place) You cannot combine CNAME with anything else (except SIG when we are doing DNSSEC) CNAMEs can't co-exist with other record types, so, by inference, you can't have a CNAME be the same as a zone name, since a zone has at least an SOA record (and, arguably, at least one NS record as well), and the CNAME can't co-exist with it. Just use an A record and be happy. Indicates that you have a domain name in your zone data that owns both a CNAME record and a record of another type. named-xfer: connect for zone failed: No route to host Maybe a firewall or router is blocking TCP connections. nslookup says "Can't find server name for address" *** Can't find server name for address 63.91.101.54: Non-existent host/domain *** Default servers are not available This may mean that in-addr.arpa reverse lookups for the IP address don't work. It appears that if you setup the reverse lookup on your own server, the name server will begin to work for that IP -- even if your uplines don't provide a way (and the IP doesn't resolve in the outside world). It appears to be a problem with nslookup. named-xfer: record too short Jul
updated October 12, 2007 in BIND Dns, CentOS, Debian Linux, FreeBSD, Gentoo Linux, GNU/Open source, Howto, Linux, OpenBSD, RedHat/Fedora Linux, Suse Linux, Sys admin, Troubleshooting,
Dns Troubleshooting Linux
Tuning, UNIXBIND is the Berkeley Internet Name Domain, DNS server. It dns troubleshooting tools is wildly used on UNIX and Linux like oses. You can use following tools to troubleshoot bind dns troubleshooting commands related problems under UNIX or Linux oses.
Task: Port 53 open and listing requestsBy default BIND listen DNS queries on port 53. So make sure port 53 is http://www.reedmedia.net/misc/dns/errors.html open and listing user requests. by running any one of the following tests. See if you can telnet to port 53 from remote computer: $ telnet remote-server-ip 53 OR telnet ns1.nixcraft.org domain Output:Trying 192.168.0.5... Connected to ns1.nixcraft.org. Escape character is '^]'. If you cannot connect make sure firewall is not blocking your requests. Next use netstat command http://www.cyberciti.biz/tips/troubleshooting-bind-dns-2.html to list open and listing port 53 on server itself: $ netstat -tulpn | grep :53 OR # netstat -atve Output: Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State User Inode tcp 0 0 ns1.nixcraft.org:domain *:* LISTEN named 10386 tcp 0 0 rhx.test.com:domain *:* LISTEN named 10384 tcp 0 0 *:ssh *:* LISTEN root 1785 tcp 0 0 rhx.test.com:rndc *:* LISTEN named 10388 tcp 0 0 rhx.test.com:smtp *:* LISTEN root 1873 tcp 0 0 ns1.nixcraft.org:ssh w2k.nixcraft.org:1057 ESTABLISHED root 10501 tcp 0 0 rhx.test.com:32773 rhx.test.com:domain TIME_WAIT root 0 tcp 0 0 ns1.nixcraft.org:32775 ns1.nixcraft.org:domain TIME_WAIT root 0 tcp 0 0 rhx.test.com:32774 rhx.test.com:domain TIME_WAIT root 0 Make sure iptables firewall is not blocking request on server: # iptables -L -n OR # iptables -L -n | less Make sure named is running: # /etc/init.d/named status If not start named: # chkconfig named on# service named start
Task: Use log filesYou can use log files after starting/restarting bind to see error mes
of course -- they're some of the most common problems because they're caused by some of the most common mistakes. Here are the contestants, in no particular http://docstore.mik.ua/orelly/networking_2ndEd/dns/ch14_03.htm order. We call 'em our "Unlucky Thirteen."
14.3.1. Forgot to Increment Serial Number The main symptom of this problem is that slave name servers don't pick up any changes you made to the zone's data file on the primary master. The slaves think the zone data hasn't changed since the serial number is still the same. How do you check whether or not you remembered to increment the serial dns error number? Unfortunately, that's not so easy. If you don't remember what the old serial number was and your serial number gives you no indication of when it was updated, there's no direct way to tell whether it's changed.[102] When you reload the primary, it loads the updated zone file regardless of whether you've changed the serial number. It checks the file's timestamp, sees that it's been modified since it last dns error message loaded the data, and reads the file. About the best you can do is to use nslookup to compare the data returned by the primary and by a slave. If they return different data, you probably forgot to increment the serial number. If you can remember a recent change you made, you can look for that data. If you can't remember a recent change, you could try transferring the zone from a primary and from a slave, sorting the results, and using diff to compare them. [102]On the other hand, if you encode the date into the serial number, as many people do (e.g., 2001010500 is the first rev of data on January 5, 2001), you may be able to tell at a glance whether you updated the serial number when you made the change. The good news is that, although determining whether the zone was transferred is tricky, making sure the zone is transferred is simple. Just increment the serial number on the primary master's copy of the zone data file and reload the zone on the primary. The slaves should pick up the new data within their refresh interval, or sooner if they use NOTIFY. If you want to make sure the slaves transfer the n