[Pdns-users] Signal 11 trying to query my DNS server, using gmysql
Frédéric Trudeau
ftrudeau at zesolution.com
Tue May 27 22:05:10 UTC 2003
Here is the deal. Ive got a domain name, zesolution.com, which I would like
to act as a master for other domains (including zesolution.com itself).
I then configured my records accordingly ... Please note that I masked the
IP addresses in this email myself, for security reasons.
mysql> select * from records where domain_id = '2' group by id;
+----+-----------+------------------------+------+--------------------------
--------------------+-------+------+-------------+
| id | domain_id | name | type | content
| ttl | prio | change_date |
+----+-----------+------------------------+------+--------------------------
--------------------+-------+------+-------------+
| 8 | 2 | zesolution.com | MX | mail.zesolution.com
| 120 | 5 | 0 |
| 9 | 2 | mail.zesolution.com | A | xx.xx.xxx.60
| 120 | 5 | NULL |
| 10 | 2 | zesolution.com | NS | ns1.zesolution.com
| 86400 | 5 | NULL |
| 11 | 2 | zesolution.com | SOA | ns1.zesolution.com
hostmaster.zesolution.com | 86400 | NULL | NULL |
| 14 | 2 | ns2.zesolution.com | A | xx.xx.xxx.62
| 120 | NULL | NULL |
| 15 | 2 | ns1.zesolution.com | A | xx.xx.xxx.61
| 120 | NULL | NULL |
| 16 | 2 | zesolution.com | NS | ns2.zesolution.com
| 86400 | NULL | NULL |
| 17 | 2 | ftp.zesolution.com | A | xx.xx.xxx.60
| 120 | NULL | NULL |
| 18 | 2 | imap.zesolution.com | A | xx.xx.xxx.60
| 120 | NULL | NULL |
| 19 | 2 | pop.zesolution.com | A | xx.xx.xxx.60
| 120 | NULL | NULL |
| 20 | 2 | moebius.zesolution.com | A | 127.0.0.1
| 120 | NULL | NULL |
+----+-----------+------------------------+------+--------------------------
--------------------+-------+------+-------------+
12 rows in set (0.00 sec)
Now, when I query my DNS server directly, using its IP, PowerDNS crashes,
and I get this in the logs.
May 27 17:54:33 moebius pdns[4859]: Query: select
content,ttl,prio,type,domain_id,name from records where
name='zesolution.com'
May 27 17:54:33 moebius pdns[4859]: Query: select
content,ttl,prio,type,domain_id,name from records where type='SOA' and
name='zesolution.com'
May 27 17:54:33 moebius pdns[4859]: Query: select
content,ttl,prio,type,domain_id,name from records where domain_id='2'
May 27 17:54:33 moebius pdns[4859]: Query: select
content,ttl,prio,type,domain_id,name from records where
name='zesolution.com'
May 27 17:54:33 moebius pdns[4859]: Query: select
content,ttl,prio,type,domain_id,name from records where type='A' and
name='mail.zesolution.com'
May 27 17:54:33 moebius pdns[4859]: Query: select
content,ttl,prio,type,domain_id,name from records where type='A' and
name='ns1.zesolution.com'
May 27 17:54:33 moebius pdns[4859]: Got a signal 11, attempting to print
trace:
May 27 17:54:33 moebius pdns[4859]:
/usr/sbin/pdns_server-zesolution-instance [0x811e4ab]
May 27 17:54:33 moebius pdns[4859]: /lib/i686/libpthread.so.0 [0x4008bf05]
May 27 17:54:33 moebius pdns[4859]:
/usr/sbin/pdns_server-zesolution-instance [0x42029188]
May 27 17:54:33 moebius pdns[4859]:
/usr/sbin/pdns_server-zesolution-instance(lookup__12UeberBackendRC5QTypeRCt1
2basic_string3ZcZt18string_char_traits1ZcZt24__default_alloc_template2b1i0P9
DNSPacketi+0xd3c) [0x812c498]
May 27 17:54:33 moebius pdns[4859]:
/usr/sbin/pdns_server-zesolution-instance(doAdditionalProcessingAndDropAA__1
3PacketHandlerP9DNSPacketT1+0x246) [0x80b7c12]
May 27 17:54:33 moebius pdns[4859]: /usr/sbin/pdns_server-zesolution-instanc
e(question__13PacketHandlerP9DNSPacket+0x6e2c) [0x80c65fc]
May 27 17:54:33 moebius pdns[4859]:
/usr/sbin/pdns_server-zesolution-instance(makeThread__t11Distributor3Z9DNSPa
cketZ9DNSPacketZ13PacketHandlerPv+0x6ac) [0x8182dec]
May 27 17:54:33 moebius pdns[4859]: /lib/i686/libpthread.so.0 [0x40088faf]
May 27 17:54:33 moebius pdns[4859]:
/usr/sbin/pdns_server-zesolution-instance(__clone+0x3a) [0x420e790a]
May 27 17:54:34 moebius pdns[4754]: Our pdns instance (4851) exited after
signal 6
May 27 17:54:34 moebius pdns[4754]: Respawning
May 27 17:54:35 moebius pdns[4863]: Virtual configuration name: zesolution
May 27 17:54:35 moebius pdns[4863]: Guardian is launching an instance
May 27 17:54:35 moebius [4863]: [BindBackend] This is the bind backend
version 2.9.8 (May 20 2003, 10:46:50) reporting
May 27 17:54:35 moebius [4863]: [Bind2Backend] This is the bind backend
version 2.9.8 (May 20 2003, 10:44:26) reporting
May 27 17:54:35 moebius [4863]: [RandomBackend] This is the randombackend
version 2.9.8 (May 20 2003, 10:43:29) reporting
May 27 17:54:35 moebius pdns[4863]: This is module gmysqlbackend.so
reporting
May 27 17:54:35 moebius pdns[4863]: This is a guarded instance of pdns
May 27 17:54:35 moebius pdns[4863]: Opened file '/etc/powerdns/pdns.conf'
for configuration
May 27 17:54:35 moebius pdns[4863]: UDP server bound to xx.xx.xxx.61:53
May 27 17:54:35 moebius pdns[4863]: TCP server bound to xx.xx.xxx.61:53
May 27 17:54:35 moebius pdns[4863]: PowerDNS 2.9.8 (C) 2001-2003
PowerDNS.COM BV (May 20 2003, 10:40:50) starting up
May 27 17:54:35 moebius pdns[4863]: PowerDNS comes with ABSOLUTELY NO
WARRANTY. This is free software, and you are welcome to redistribute it
according to the terms of the GPL version 2.
May 27 17:54:35 moebius pdns[4863]: Set effective group id to 101
May 27 17:54:35 moebius pdns[4863]: Set effective user id to 101
May 27 17:54:35 moebius pdns[4863]: DNS Proxy launched, local port 28333,
remote xxx.xx.xxx.xxx:53
May 27 17:54:35 moebius pdns[4867]: Launched webserver on xx.xx.xxx.60:8080
May 27 17:54:35 moebius pdns[4863]: Creating backend connection for TCP
May 27 17:54:35 moebius pdns[4869]: Master/slave communicator launching
May 27 17:54:35 moebius pdns[4863]: gmysql Connection succesful
May 27 17:54:35 moebius pdns[4869]: gmysql Connection succesful
May 27 17:54:35 moebius pdns[4863]: About to create 3 backend threads
May 27 17:54:35 moebius pdns[4869]: All slave domains are fresh
May 27 17:54:35 moebius pdns[4871]: gmysql Connection succesful
May 27 17:54:35 moebius pdns[4869]: No master domains need notifications
May 27 17:54:35 moebius pdns[4872]: gmysql Connection succesful
May 27 17:54:35 moebius pdns[4873]: gmysql Connection succesful
May 27 17:54:35 moebius pdns[4863]: Done launching threads, ready to
distribute questions
If I set both NS types records to 'localhost', or 127.0.0.1, everything
works fine. But that is not what I want, of course, since ultimatelly, I
will register other domains, that i'll point toward ns1.zesolution.com and
ns2.zesolution.com in order to deal with their zones.
I hope im clear enough trying to explain what I want to achieve using
PowerDNS.
Here is my config file, if taht can help any of you figure out what ive done
wrong.
# Autogenerated configuration file template
launch=gmysql
gmysql-socket=/var/lib/mysql/mysql.sock
gmysql-user=powerdns
gmysql-password=alabama
gmysql-dbname=_system_powerdns
recursor=xxx.xx.xxx.xxx:53
#################################
# allow-axfr-ips If disabled, DO allow zonetransfers from these IP
addresses
#
# allow-axfr-ips=
#################################
# allow-recursion List of netmasks that are allowed to recurse
#
# allow-recursion= 255.255.255.0
#################################
# cache-ttl Seconds to store packets in the PacketCache
#
cache-ttl=20
#################################
# chroot If set, chroot to this directory for more security
#
# chroot=
#################################
# config-dir Location of configuration directory (pdns.conf)
#
config-dir=/etc/powerdns
#################################
# config-name Name of this virtual configuration - will rename the binary
image
#
config-name=zesolution
#################################
# control-console Debugging switch - don't use
#
# control-console=no
#################################
# daemon Operate as a daemon
#
daemon=yes
#################################
# default-soa-name name to insert in the SOA record if none set in the
backend
#
# default-soa-name=a.misconfigured.powerdns.server
#################################
# disable-axfr Disable zonetransfers but do allow TCP queries
#
# disable-axfr=no
#################################
# disable-tcp Do not listen to TCP queries
#
# disable-tcp=no
#################################
# distributor-threads Default number of Distributor (backend) threads to
start
#
# distributor-threads=3
#################################
# fancy-records Process URL and MBOXFW records
#
# fancy-records=no
#################################
# guardian Run within a guardian process
#
# guardian=no
#################################
# launch Which backends to launch and order to query them in
#
# launch=
#################################
# lazy-recursion Only recurse if question cannot be answered locally
#
# lazy-recursion=yes
#################################
# load-modules Load this module - supply absolute or relative path
#
# load-modules=
#################################
# local-address Local IP address to which we bind
#
# local-address=127.0.0.1
local-address=xx.xx.xxx.61
#################################
# local-ipv6 Local IP address to which we bind
#
# local-ipv6=
#################################
# local-port The port on which we listen
#
local-port=53
#################################
# log-dns-details If PDNS should log failed update requests
#
log-dns-details=yes
#################################
# log-failed-updates If PDNS should log failed update requests
#
log-failed-updates=yes
#################################
# logfile Logfile to use
#
# logfile=pdns.log
#################################
# logging-facility Log under a specific facility
#
# logging-facility=
#################################
# loglevel Amount of logging. Higher is more. Do not set below 3
#
loglevel=3
#################################
# master Act as a master
#
master=yes
#################################
# max-queue-length Maximum queuelength before considering situation
lost
#
max-queue-length=5000
#################################
# max-tcp-connections Maximum number of TCP connections
#
max-tcp-connections=10
#################################
# module-dir Default directory for modules
#
module-dir=/usr/lib/powerdns
#################################
# negquery-cache-ttl Seconds to store packets in the PacketCache
#
# negquery-cache-ttl=60
#################################
# only-soa Make sure that no SOA serial is less than this number
#
# only-soa=org
#################################
# out-of-zone-additional-processing Do out of zone additional processing
#
out-of-zone-additional-processing=yes
#################################
# query-cache-ttl Seconds to store packets in the PacketCache
#
# query-cache-ttl=20
#################################
# query-logging Hint backends that queries should be logged
#
query-logging=yes
#################################
# queue-limit Maximum number of milliseconds to queue a query
#
# queue-limit=1500
#################################
# receiver-threads Number of receiver threads to launch
#
# receiver-threads=1
#################################
# recursive-cache-ttl Seconds to store packets in the PacketCache
#
# recursive-cache-ttl=10
#################################
# recursor If recursion is desired, IP address of a recursing
nameserver
#
# recursor=
#################################
# setgid If set, change group id to this gid for more security
#
setgid=powerdns
#################################
# setuid If set, change user id to this uid for more security
#
setuid=powerdns
#################################
# skip-cname Do not perform CNAME indirection for each query
#
# skip-cname=no
#################################
# slave Act as a slave
#
# slave=no
#################################
# slave-cycle-interval Reschedule failed SOA serial checks once every ..
seconds
#
# slave-cycle-interval=60
#################################
# smtpredirector Our smtpredir MX host
#
# smtpredirector=a.misconfigured.powerdns.smtp.server
#################################
# soa-minimum-ttl Default SOA mininum ttl
#
# soa-minimum-ttl=3600
#################################
# soa-serial-offset Make sure that no SOA serial is less than this
number
#
# soa-serial-offset=0
#################################
# socket-dir Where the controlsocket will live
#
socket-dir=/var/run/powerdns
#################################
# strict-rfc-axfrs Perform strictly rfc compliant axfrs (very slow)
#
# strict-rfc-axfrs=no
#################################
# urlredirector Where we send hosts to that need to be url redirected
#
# urlredirector=127.0.0.1
#################################
# use-logfile Use a log file
#
# use-logfile=no
#################################
# webserver Start a webserver for monitoring
#
webserver=yes
#################################
# webserver-address IP Address of webserver to listen on
#
webserver-address=xx.xx.xxx.60
#################################
# webserver-password Password required for accessing the webserver
#
webserver-password=xxxxxxx
#################################
# webserver-port Port of webserver to listen on
#
webserver-port=8080
#################################
# webserver-print-arguments If the webserver should print arguments
#
webserver-print-arguments=yes
#################################
# wildcard-url Process URL and MBOXFW records
#
# wildcard-url=no
#################################
# wildcards Honor wildcards in the database
#
# wildcards=
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