Provided by: yadifa_2.1.6-1_amd64 
NAME
yadifad.conf - configuration file for yadifad(8).
SYNOPSIS
/etc/yadifad.conf
DESCRIPTION
The configuration of yadifad has several containers:
<main>
General container
<key> TSIG keys
<acl> Access lists
<nsid> NameServer IDentifier
<rrl> Response Rate Limiting directives
<zone> Description of the domain name in specific attributes
<channels>
Description of the logger outputs
<loggers>
Description of the loggers.
The configuration supports included files.
example: include /etc/yadifa/conf.d/local.conf
The configuration files can be nested.
The configuration consists of:
* Container, which starts with <container name> and ends with </container name>
* Variable name
* 1 or 2 arguments
* Arguments can contain 1 or more comma separated values.
eg.
<container>
# variable argument
variable value1
# variable argument1 argument2
variable value1 value2
# variable argument1
variable value1,value2
</container>
EXAMPLES
Examples of containers defined for a configuration file.
* Main
1. Config with includes
# start yadifad.conf <main> container
include /etc/yadifa/conf.d/local.conf
# end yadifad.conf <main> container
2. Main without includes
<main>
# Detach from the console (alias: daemonize)
daemon off
# Jail the application
chroot off
# The path of the log files (alias: chroot-path)
chrootpath "/chroot/yadifad"
# The path of the log files (alias: log-path)
logpath "/var/log/yadifa"
# The location of the pid file (alias: pid-file)
pidfile "/var/run/yadifa/yadifad.pid"
# The path of the zone files (alias: data-path)
datapath "/var/lib/yadifa"
# The path of the DNSSEC keys (alias: keys-path)
keyspath "/var/lib/yadifa/keys"
# The path of the transfer and journaling files (AXFR & IXFR) (alias: xfr-path)
xfrpath "/var/lib/yadifa/xfr"
# A string returned by a query of hostname. CH TXT
# note: if you leave this out, the real hostname will be given back (alias: hostname-chaos)
hostname "server-yadifad"
# An ID returned by a query to id.server. CH TXT (alias: serverid-chaos)
serverid "yadifad-01"
# The version returned by a query to version.yadifa. CH TXT (alias: version-chaos)
version "2.1.6"
# Set the maximum UDP packet size.
# note: the packetsize cannot be less than 512 or more than 65535.
# Typical choice is 4096.
edns0-max-size 4096
# The maximum number of parallel TCP queries (max-tcp-connections)
max-tcp-queries 100
# The minimum data rate for a TCP query (in bytes per second)
tcp-query-min-rate 512
# The user id to use (alias: user)
uid yadifa
# The group id to use (alias: group)
gid yadifa
# The DNS port - any DNS query will use that port unless a specific value is used (alias: server-port)
port 53
# The interfaces to listen to.
# listen 0.0.0.0
listen 127.0.0.1, 192.0.2.2, 192.0.2.130 port 8053, 2001:db8::2
# Type of querylog to use
# 0: none
# 1: yadifa
# 2: bind
# 3: both yadifa and bind
queries-log-type 1
# Enable the collection and logging of statistics
statistics on
# Maximum number of seconds between two statistics lines
statistics-max-period 60
# Drop queries with erroneous content
#
# answer-formerr-packets on
answer-formerr-packets off
# Maximum number of records in an AXFR packet. Set to 1 for compatibility
# with very old name servers (alias: axfr-max-record-by-packet)
axfr-maxrecordbypacket 0
# Global Access Control rules
#
# Rules can be defined on network ranges, TSIG signatures, and ACL rules
# simple queries:
#
# allow-query any
allow-query !192.0.2.251,any
# dynamic update of a zone
#
# allow-update none
allow-update admins
# dynamic update of a slave (forwarded to the master)
#
# allow-update-forwarding none
allow-update-forwarding admins,key abroad-admin-key
# transfer of a zone (AXFR or IXFR)
#
# allow-transfer any
allow-transfer transferer
# notify of a change in the master
#
# allow-notify any
allow-notify master,admins
# If YADIFA has the controller enabled, allow control only for these
# clients (none by default)
allow-control localhost
# overwrite the amount of CPUs detected by yadifad
cpu-count-override 3
# set the number of threads to serve queries
thread-count-by-address 2
</main>
* Key
TSIG-key configuration
1. Admin-key key definition (the name is arbitrary)
<key>
name abroad-admin-key
algorithm hmac-md5
secret WorthlessKeyForExample==
</key>
2. Master-slave key definition
<key>
name master-slave
algorithm hmac-md5
secret MasterAndSlavesTSIGKey==
</key>
* ACL
Access Control List definitions
1. Master-slave key use
<acl>
transferer key master-slave
admins 192.0.2.0/24, 2001:db8::74
master 192.0.2.53
localhost 127.0.0.0/8, ::1
</acl>
* NSID
DNS NameServer IDentifier
1. Example with ascii
<nsid>
ascii belgium-brussels-01
</nsid>
2. Example with hex
<nsid>
hex 00320201
</nsid>
* RRL
Response Rate Limiting
<rrl>
# Number of identical responses per second before responses are being limited
responses-per-second 5
# Number of errors per second before responses are being limited
errors-per-second 5
# Random slip parameter
slip 10
# If enabled, the rate limits are only logged and not enforced
log-only off
# Mask applied to group the IPv4 clients
ipv4-prefix-length 24
# Mask applied to group the IPv6 clients
ipv6-prefix-length 56
# Rate limits are not subject to the following clients (aka whitelist)
exempt-clients none
# Enable or disable the rate limit capabilities
enabled yes
</rrl>
* Zone
1. Master domain zone config
<zone>
# This server is master for the zone (mandatory)
type master
# The domain name (mandatory)
domain mydomain.eu
# The zone file, relative to 'datapath' (mandatory for a master) (alias: file-name)
file master/mydomain.eu
# List of servers also notified of a change (beside the ones in the zone file) (alias: notifies, notify)
also-notify 192.0.2.84, 192.0.2.149
# Set the size of the journal file in KB (alias: journal-size-kb)
journal-size 8192
# Allow dynupdate for these ACL entries
allow-update admins
# Allow AXFR/IXFR for these ACL entries
allow-transfer transferer
</zone>
2. Slave domain zone config
<zone>
# This server is slave for that zone (mandatory)
type slave
# The domain name (mandatory)
domain myotherdomain.eu
# The address of the master (mandatory for a slave, forbidden for a master) (alias: master)
masters 191.0.2.53 port 4053 key master-slave
# The zone file, relative to 'datapath'.
file slaves/myotherdomain.eu
# Accept notifes from these ACL entries
allow-notify master
</zone>
* Channels
Logging output-channel configurations:
The "name" is arbitrary and is used in the <loggers>.
The "stream-name" defines the output type (ie: a file name or syslog).
The "arguments" are specific to the output type (ie: unix file access rights or syslog options and
facilities).
1. Example: YADIFA running as daemon channel definition.
<channels>
# name stream-name arguments
database database.log 0644
dnssec dnssec.log 0644
server server.log 0644
statistics statistics.log 0644
system system.log 0644
queries queries.log 0644
zone zone.log 0644
all all.log 0644
syslog syslog user
</channels>
2. Example: YADIFA running in debug mode.
This example shows the "stderr" and "stdout" which can also be used in the first example,
but will output to the console.
<channels>
# name stream-name arguments
syslog syslog user
stderr STDERR
stdout STDOUT
</channels>
* Loggers
Logging input configurations:
The "bundle" name is predifined: database, dnssec, server, statistics, system, zone.
The "debuglevel" uses the same names as syslog or "*" or "all" to filter the input.
The "channels" are a comma-separated list of channels.
1. Example without syslog
<loggers>
# bundle debuglevel channels
database ALL database,all
dnssec warning dnssec,all
server INFO,WARNING,ERR,CRIT,ALERT,EMERG server,all
statistics * statistics
system * system,all
queries * queries
zone * zone,all
</loggers>
2. Example with syslog
<loggers>
# bundle debuglevel channels
database ALL database,syslog
dnssec warning dnssec,syslog
server INFO,WARNING,ERR,CRIT,ALERT,EMERG server,syslog
stats * statistics, syslog
system * system,syslog
queries * queries,syslog
zone * zone,syslog
</loggers>
The defined loggers are:
system contains low level messages about the system such as memory allocation, threading, IOs, timers and
cryptography, ...
database
It contains messages about most lower-level operations in the DNS database. ie: journal, updates,
zone loading and sanitization, DNS message query resolution, ...)
dnssec contains messages about lower-level dnssec operations in the DNS database. ie: status,
maintenance, verification, ...
server contains messages about operations in the DNS server. ie: start up, shutdown, configuration,
transfers, various services status (database management, network management, DNS notification
management, dynamic update management, resource rate limiting, ...)
zone contains messages about the loading of a zone from a source (file parsing, transferred binary zone
reading, ...)
stats contains the statistics of the server.
queries
contains the queries on the server. Queries can be logged with the BIND and/or with the YADIFA
format.
BIND format:
client sender-ip#port: query: fqdn class type +SETDC (listen-ip)
YADIFA format:
query [ id ] {+SETDC} fqdn class type (sender-ip#port)
where:
id is the query message id
+ means the message has the Recursion Desired flag set
S means the message is signed with a TSIG
E means the message is EDNS
T means the message was sent using TCP instead of UDP
D means the message has the DNSSEC OK flag set
C means the message has the Checking Disabled flag set
fqdn is the queried FQDN
class is the queried class
type is the queried type
sender-ip
is the IP of the client that sent the query
port is the port of the client that sent the query
listen-ip
is the listen network interface that received the message
Note that on YADIFA any unset flag is replaced by a '-', on BIND only the '+' follows that rule.
System operators will mostly be interested in the info and above messages of queries and stats, as well
as the error and above messages of the other loggers.
SEE ALSO
yadifad(8)
NOTES
Since unquoted leading whitespace is generally ignored in the yadifad.conf you can indent everything to
taste.
CHANGES
Please check the file ChangeLog from the sources.
VERSION
Version: 2.1.6 of 2016-02-04.
MAILING LISTS
There exists a mailinglist for questions relating to any program in the yadifa package:
* yadifa-users@mailinglists.yadifa.eu
for submitting questions/answers.
* http://www.yadifa.eu/mailing-list-users
for subscription requests.
If you would like to stay informed about new versions and official patches send a subscription request to
via:
* http://www.yadifa.eu/mailing-list-announcements
(this is a readonly list).
LICENSE AND COPYRIGHT
Copyright
(C) 2011-2016, EURid
B-1831 Diegem, Belgium
info@yadifa.eu
AUTHORS
Gery Van Emelen
Email: Gery.VanEmelen@EURid.eu
Eric Diaz Fernandez
Email: Eric.DiazFernandez@EURid.eu
WWW: http://www.EURid.eu
YADIFA 2016-02-04 YADIFAD-CONF(5)