Dynamic DNS Client using ddclient on CentOS 7
Richard Harmonson edited this page Mar 5, 2019
·
5 revisions
Published: October 8, 2017
The ddclient package is found in the EPEL repository; yum install -y epel-release.
$ sudo yum install ddclient
Results
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Package Arch Version Repository
Size
================================================================================
Installing:
ddclient noarch 3.8.3-2.el7 epel 61 k
Installing for dependencies:
perl x86_64 4:5.16.3-292.el7 base 8.0 M
perl-Carp noarch 1.26-244.el7 base 19 k
perl-Digest-SHA1 x86_64 2.13-9.el7 base 50 k
perl-Encode x86_64 2.51-7.el7 base 1.5 M
perl-Exporter noarch 5.68-3.el7 base 28 k
perl-File-Path noarch 2.09-2.el7 base 26 k
perl-File-Temp noarch 0.23.01-3.el7 base 56 k
perl-Filter x86_64 1.49-3.el7 base 76 k
perl-Getopt-Long noarch 2.40-2.el7 base 56 k
perl-HTTP-Tiny noarch 0.033-3.el7 base 38 k
perl-IO-Socket-IP noarch 0.21-4.el7 base 35 k
perl-IO-Socket-SSL noarch 1.94-6.el7 base 114 k
perl-Net-LibIDN x86_64 0.12-15.el7 base 28 k
perl-Net-SSLeay x86_64 1.55-6.el7 base 285 k
perl-PathTools x86_64 3.40-5.el7 base 82 k
perl-Pod-Escapes noarch 1:1.04-292.el7 base 51 k
perl-Pod-Perldoc noarch 3.20-4.el7 base 87 k
perl-Pod-Simple noarch 1:3.28-4.el7 base 216 k
perl-Pod-Usage noarch 1.63-3.el7 base 27 k
perl-Scalar-List-Utils x86_64 1.27-248.el7 base 36 k
perl-Socket x86_64 2.010-4.el7 base 49 k
perl-Storable x86_64 2.45-3.el7 base 77 k
perl-Text-ParseWords noarch 3.29-4.el7 base 14 k
perl-Time-HiRes x86_64 4:1.9725-3.el7 base 45 k
perl-Time-Local noarch 1.2300-2.el7 base 24 k
perl-constant noarch 1.27-2.el7 base 19 k
perl-libs x86_64 4:5.16.3-292.el7 base 688 k
perl-macros x86_64 4:5.16.3-292.el7 base 43 k
perl-parent noarch 1:0.225-244.el7 base 12 k
perl-podlators noarch 2.5.1-3.el7 base 112 k
perl-threads x86_64 1.87-4.el7 base 49 k
perl-threads-shared x86_64 1.43-6.el7 base 39 k
Transaction Summary
================================================================================
Install 1 Package (+32 Dependent packages)
Total download size: 12 M
Installed size: 38 M
Is this ok [y/d/N]:
Default configuration file is found /etc/ddclient.conf. Backup then edit the file to identify the external IP address and update your records with your DDNS provider.
$ sudo cp /etc/ddclient.conf /etc/ddclient.conf.bak
$ sudo vi /etc/ddclient.conf
Select the method to obtain external IP address. In my case, my firewall does not have a status page, so I remove the "#" before the provided use=web option for checkip. If your firewall does have a status page with the external IP address, I would advise using it. See the configuration file the list of currently supported firewalls.
use=web, web=checkip.dyndns.org/, web-skip='IP Address' # found after IP Address
Also, update the frequency from 300 to 600 seconds due to threat of being banned by dyndns.org.
daemon=600
ddclient supports:
- DynDNS (dyndns.org)
- ZoneEdit (zoneedit.com)
- EasyDNS (easydns.com)
- Hammernode (hn.org)
- DSLReports (dslreports.com)
- OrgDNS (orgdns.org)
- DNSPark (dnspark.com)
- NameCheap (namecheap.com)
Using NameCheap, update its stanza as follows:
##
## NameCheap (namecheap.com)
##
protocol=namecheap, \
server=dynamicdns.park-your-domain.com, \
login=mydomain.com, \
password=[youkeyfromyouranamecheapaccountwithoutthesebrackets] \
@, www, mail, [host4], [host5]
$ sudo systemctl enable ddclient && sudo systemctl start ddclient && sudo systemctl status ddclient
Results
Created symlink from /etc/systemd/system/multi-user.target.wants/ddclient.service to /usr/lib/systemd/system/ddclient.service.
● ddclient.service - A Perl Client Used To Update Dynamic DNS
Loaded: loaded (/usr/lib/systemd/system/ddclient.service; enabled; vendor preset: disabled)
Active: active (running) since Sun 2017-10-08 15:29:06 PDT; 13ms ago
Process: 9359 ExecStart=/usr/sbin/ddclient $DDCLIENT_OPTIONS (code=exited, status=0/SUCCESS)
Process: 9357 ExecStartPre=/bin/touch /var/cache/ddclient/ddclient.cache (code=exited, status=0/SUCCESS)
Main PID: 9361 (ddclient - slee)
CGroup: /system.slice/ddclient.service
└─9361 ddclient - sleeping for 300 seconds
Oct 08 15:29:06 dd.intranet.harmonson.net systemd[1]: Starting A Perl Client ...
Oct 08 15:29:06 dd.intranet.harmonson.net systemd[1]: PID file /var/run/ddcli...
Oct 08 15:29:06 dd.intranet.harmonson.net systemd[1]: Started A Perl Client U...
Hint: Some lines were ellipsized, use -l to show in full.
At this point if everything went well, you should see your host records update.