Kenneth: /* Services */

2018-09-22T03:48:05Z

Services

New page

== DDNS ==

BigDinosaur Blog - https://blog.bigdinosaur.org/running-bind9-and-isc-dhcp/

== Dependencies ==

# centos 6.5
yum install bind dhcp

# generate /etc/rndc.key
/usr/sbin/rndc-confgen -a

# sample /etc/rndc.key
key "rndc-key" {
algorithm hmac-md5;
secret "xxxxxxxxxxzk9EdYZ9SP8Q==";
};

== Bind ==

/etc/named.conf
<pre>
include "/etc/rndc.key";

#key "rndc-key" {
# algorithm hmac-md5;
# secret "xxxxxxxxxxzk9EdYZ9SP8Q==";
#};

zone "lab" {
type master;
file "/var/named/db.lab";
allow-update { key rndc-key; };
};

zone "200.100.10.in-addr.arpa" {
type master;
file "/var/named/200.100.10.rev";
allow-update { key rndc-key; };
};
</pre>

/var/named/db.lab:
<pre>
$ORIGIN .
$TTL 10 ; 10 seconds
lab IN SOA ns1.lab. hostmaster.lab. (
2014080111 ; serial
120 ; refresh (2 minutes)
120 ; retry (2 minutes)
2419200 ; expire (4 weeks)
120 ; minimum (2 minutes)
)
NS ns1.lab.
$ORIGIN lab.
$TTL 30 ; 30 seconds
master A 10.100.200.3
ns1 A 10.100.200.3
</pre>

chmod g+w /var/named
chmod g+w /var/named/db.lab
chown :named /var/named/db.lab

== DHCPd ==

/etc/dhcp/dhcpd.conf
<pre>
authoritative;
option domain-name "lab";
option domain-search "lab", "example.com";
option domain-name-servers 10.100.200.3;
#option domain-name-servers 10.100.1.1, 10.100.2.1;

ddns-updates on;
ddns-update-style interim;
update-static-leases on;
#ignore client-updates;

#key rndc-key { algorithm hmac-md5; secret xxxxxxxxxxzk9EdYZ9SP8Q==;}
include "/etc/rndc.key";

allow unknown-clients;
use-host-decl-names on;
default-lease-time 600;
max-lease-time 7200;
log-facility local7;

zone lab. {
primary localhost;
key rndc-key;
}
zone 200.100.10.in-addr.arpa. {
primary localhost;
key rndc-key;
}

subnet 10.100.200.0 netmask 255.255.255.0 {
range 10.100.200.100 10.100.200.254;
option subnet-mask 255.255.255.0;
option routers 10.100.200.1;
option broadcast-address 10.100.200.255;
ddns-domainname "lab.";
ddns-rev-domainname "in-addr.arpa.";

## PXE stuff unrelated...
#if exists user-class and option user-class = "iPXE" {
# filename "bootstrap.ipxe";
#} else {
# filename "undionly.kpxe";
#}
#next-server 10.100.200.3;
}

</pre>

== Services ==

Config check:
named-checkconf

Restart services:
service named restart
service dhcpd restart

Linux/DDNS - Revision history

Kenneth: /* Services */