Namecheap DDNS docker client

When to use ?

If your server do not have static IP, i.e. When Public IP of your server / router keep changing, This will automatically update new IP to Namecheap record.

Why to use it ?

• Easy to setup

• Lightweight

• No cronjob configuration required

• Logs for visibility

• Open source

How to use it

• Change nameserver of you domain to BasicDNS or PremiumDNS or FreeDNS. Namecheap Account -> Domain List -> Manage -> Domain -> NAMESERVERS -> Choose BasicDNS from dropdown

• Enable Dynamic DNS for your domain from Namecheap. Namecheap Account -> Domain List -> Manage -> Advanced DNS -> Dynamic DNS -> Toggle Status

• Copy the Dynamic DNS password which is generated after enabling Dynamic DNS. Keep it safe and handy.

• Add a record of type A + Dynamic DNS with required host name.

• Install docker on server.

• Run below command

Suppose, You need DDNS for server.example.com

docker run --name server.example.com -d --restart unless-stopped -e NC_HOST='server' -e NC_DOMAIN='example.com' -e NC_PASS='DynamicDDNSPa2w0rd' linuxshots/namecheap-ddns

Here, NC_HOST is host name added in Namecheap record.

NC_DOMAIN is your domain name.

NC_PASS is your Dynamic DDNS password which is generated from Namecheap.

• Check the log

docker logs server.example.com

• To stop, start and remove DDNS.

docker stop server.example.com # To stop
docker start server.example.com # To start after its stopped
docker rm server.example.com -f # To remove

Build your own image

To build your own image

• Clone this repo

• Run docker build

# Replace OS and ARCH values with valid values of GOlang environment variables GOOS and GOARCH.
docker build --build-arg VERSION=1.0.0 -t linuxshots/namecheap-ddns . 

NOTE: This sets the TTL to Automatic i.e. 30 minutes. Currently, There is no way provided by Namecheap to set custom TTL in Dynamic DDNS.