Access your home network remotely via a custom domain name without a static IP!
Size | Downloads | Discord |
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First copy the example configuration file into the real one.
cp config-example.json config.json
Edit config.json
and replace the values with your own.
You can choose to use either the newer API tokens, or the traditional API keys
To generate a new API tokens, go to your Cloudflare Profile and create a token capable of Edit DNS. Then replace the value in
"authentication": "api_token": "Your cloudflare API token, including the capability of **Edit DNS**"
Alternatively, you can use the traditional API keys by setting appropriate values for:
"authentication": "api_key": "api_key": "Your cloudflare API Key", "account_email": "The email address you use to sign in to cloudflare",
Some ISP provided modems only allow port forwarding over IPv4 or IPv6. In this case, you would want to disable any interface not accessible via port forward.
"a": true, "aaaa": true
"zone_id": "The ID of the zone that will get the records. From your dashboard click into the zone. Under the overview tab, scroll down and the zone ID is listed in the right rail", "subdomains": "Array of subdomains you want to update the A & where applicable, AAAA records. IMPORTANT! Only write subdomain name. Do not include the base domain name. (e.g. foo or an empty string to update the base domain)", "proxied": "Defaults to false. Make it true if you want CDN/SSL benefits from cloudflare. This usually disables SSH)", "ttl": "Defaults to 300 seconds. Longer TTLs speed up DNS lookups by increasing the chance of cached results, but a longer TTL also means that updates to your records take longer to go into effect. You can choose a TTL between 30 seconds and 1 day. For more information, see [Cloudflare's TTL documentation](https://developers.cloudflare.com/dns/manage-dns-records/reference/ttl/)",
This script can be used to update multiple subdomains on the same IP address.
For example, if you have a domain example.com
and you want to host additional subdomains at foo.example.com
and bar.example.com
on the same IP address, you can use this script to update the DNS records for all subdomains.
Please remove the comments after //
in the below example. They are only there to explain the config.
Do not include the base domain name in your subdomains
config. Do not use the FQDN.
{ "cloudflare": [ { "authentication": { "api_token": "api_token_here", // Either api_token or api_key "api_key": { "api_key": "api_key_here", "account_email": "your_email_here" } }, "zone_id": "your_zone_id_here", "subdomains": [ { "name": "", // Root domain (example.com) "proxied": true }, { "name": "foo", // (foo.example.com) "proxied": true }, { "name": "bar", // (bar.example.com) "proxied": true } ] } ], "a": true, "aaaa": true, "purgeUnknownRecords": false, "ttl": 300 }
You can handle ddns for multiple domains (cloudflare zones) using the same docker container by duplicating your configs inside the cloudflare: []
key within config.json
like below:
If you are using API Tokens, make sure the token used supports editing your zone ID.
{ "cloudflare": [ { "authentication": { "api_token": "api_token_here", "api_key": { "api_key": "api_key_here", "account_email": "your_email_here" } }, "zone_id": "your_first_zone_id_here", "subdomains": [ { "name": "", "proxied": false }, { "name": "remove_or_replace_with_your_subdomain", "proxied": false } ] }, { "authentication": { "api_token": "api_token_here", "api_key": { "api_key": "api_key_here", "account_email": "your_email_here" } }, "zone_id": "your_second_zone_id_here", "subdomains": [ { "name": "", "proxied": false }, { "name": "remove_or_replace_with_your_subdomain", "proxied": false } ] } ], "a": true, "aaaa": true, "purgeUnknownRecords": false }
If you have multiple IP addresses and want to load balance between them, you can use the loadBalancing
option. This will create a CNAME record for each subdomain that points to the subdomain with the lowest IP address.
{ "cloudflare": [ { "authentication": { "api_token": "api_token_here", "api_key": { "api_key": "api_key_here", "account_email": "your_email_here" } }, "zone_id": "your_zone_id_here", "subdomains": [ { "name": "", "proxied": false }, { "name": "remove_or_replace_with_your_subdomain", "proxied": false } ] } ],{ "cloudflare": [ { "authentication": { "api_token": "api_token_here", "api_key": { "api_key": "api_key_here", "account_email": "your_email_here" } }, "zone_id": "your_zone_id_here", "subdomains": [ { "name": "", "proxied": false }, { "name": "remove_or_replace_with_your_subdomain", "proxied": false } ] } ], "load_balancer": [ { "authentication": { "api_token": "api_token_here", "api_key": { "api_key": "api_key_here", "account_email": "your_email_here" } }, "pool_id": "your_pool_id_here", "origin": "your_origin_name_here" } ], "a": true, "aaaa": true, "purgeUnknownRecords": false, "ttl": 300 }
purgeUnknownRecords
removes stale DNS records from Cloudflare. This is useful if you have a dynamic DNS record that you no longer want to use. If you have a dynamic DNS record that you no longer want to use, you can set purgeUnknownRecords
to true
and the script will remove the stale DNS record from Cloudflare.
Pre-compiled images are available via the official docker container on DockerHub.
Modify the host file path of config.json inside the volumes section of docker-compose.yml.
version: '3.9' services: cloudflare-ddns: image: timothyjmiller/cloudflare-ddns:latest container_name: cloudflare-ddns security_opt: - no-new-privileges:true network_mode: 'host' environment: - PUID=1000 - PGID=1000 volumes: - /YOUR/PATH/HERE/config.json:/config.json restart: unless-stopped
Docker requires network_mode be set to host in order to access the IPv6 public address.
From the project root directory
docker-compose up -d
Create config File
cp ../../config-example.json config.json
Edit config.jsonon (vim, nvim, nano... )
${EDITOR} config.json
Create config file as Secret.
kubectl create secret generic config-cloudflare-ddns --from-file=config.json --dry-run=client -oyaml -n ddns > config-cloudflare-ddns-Secret.yaml
apply this secret
kubectl apply -f config-cloudflare-ddns-Secret.yaml rm config.json # recomended Just keep de secret on Kubernetes Cluster
apply this Deployment
kubectl apply -f cloudflare-ddns-Deployment.yaml
This script requires Python 3.5+, which comes preinstalled on the latest version of Raspbian. Download/clone this repo and give permission to the project's bash script by running chmod +x ./start-sync.sh
. Now you can execute ./start-sync.sh
, which will set up a virtualenv, pull in any dependencies, and fire the script.
Upload the cloudflare-ddns folder to your home directory /home/your_username_here/
Run the following code in terminal
crontab -e
*/15 * * * * /home/your_username_here/cloudflare-ddns/start-sync.sh
Create a config.json file with your production credentials.
The optional docker-build-all.sh
script requires Docker experimental support to be enabled.
Docker Hub has experimental support for multi-architecture builds. Their official blog post specifies easy instructions for building with Mac and Windows versions of Docker Desktop.
Multi-architecture (experimental) docker-build-all.sh
Linux/amd64 by default docker-build.sh
sudo chmod +x ./docker-build.sh
sudo chmod +x ./docker-build-all.sh
docker-build.sh
script.Recommended for local development
./docker-build.sh
Recommended for production
./docker-build-all.sh
docker run -d timothyjmiller/cloudflare_ddns:latest
This Template is licensed under the GNU General Public License, version 3 (GPLv3).
Timothy Miller
[View my personal website
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