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namesilo_ddns version 2.2

Dynamic DNS record update with NameSilo.

This is a shell script to update Namesilo's DNS record when IP changed. Set to run this script as cronjob in your system.

Previous version was tested in Fedora 23, CentOS 7 and Ubuntu 14.04+.

Portablity fixes mean it should work anywhere, but definitely works on FreeBSD. Please report test results.

Prerequisites:

  • Generate API key in the api manager at Namesilo

  • Make sure your system has xmllint and dig or drill. Your system will also require cURL or fetch. If not, install them:

on CentOS:

sudo yum install bind-utils libxml2

on Ubuntu/Debian:

sudo apt-get install dnsutils libxml2-utils

on FreeBSD:

sudo pkg install libxml2

How to use:

  • Download and save the shell script.
  • Copy namesilo_ddns.conf.sample somewhere, chmod 600 and set DOMAIN, HOSTS, and APIKEY. You may optionally change the TTL.
  • Set file permission to make the script executable.
  • Create cronjob (optional)

Manual test:

You should test the script to verify that actually can update the DNS record at Namesilo.

Step 1: Create an A record in DNS Manager at Namesilo. Set it to a random IP address (not the same public IP of yours). For example:

test.mydomain.tld A 1.2.3.4

Step 2: Run the script to try to update this DNS record

# ./namesilo_ddns.sh /path/to/config_file

Step 3: Verify:

dig +short test.domain.tld @ns1.dnsowl.com

(you may also try other DNS server at Namesilo, e.g. ns2.dnsowl.com, ns3.dnsowl.com)

The result should show updated DNS record with your current public IP address. (Note: DNS record updates need time to propagate to other DNS server, so if you check against other DNS server you may not see the update right away.)