Dockerfile to build a Container to automatically update Cloudflare DNS records upon container start. A time saver if you are regularly moving containers around to different systems. This will allow you to set multiple zone's you wish to update.
- This Container uses a customized Alpine Linux base which includes s6 overlay enabled for PID 1 Init capabilities, zabbix-agent compiled for individual container monitoring, Cron also installed along with other tools (bash,curl, less, logrotate, nano, vim) for easier management. It also supports sending to external SMTP servers..
This image assumes that you are using a reverse proxy such as tiredofit/traefik
Automated builds of the image are available on Docker Hub and is the recommended method of installation.
docker pull tiredofit/traefik-cloudflare-companion:(imagetag)latest- Most recent release w/Python 2 and Alpine 3.9
-
The quickest way to get started is using docker-compose. See the examples folder for a working docker-compose.yml that can be modified for development or production use.
-
Set various environment variables to understand the capabilities of this image.
Upon startup the image looks for a label containing traefik.frontend.rule from your running containers of either updates Cloudflare with a CNAME record of your TARGET_DOMAIN. Previous versions of this container used to only update one Zone, however with the additional of the DOMAIN environment variables it now parses the containers variables and updates the appropriate zone.
| File | Description |
|---|---|
/var/run/docker.sock |
You must have access to the docker socket in order to utilize this image |
Along with the Environment Variables from the Base image, below is the complete list of available options that can be used to customize your installation. By Default Cron and SMTP are disabled.
| Parameter | Description |
|---|---|
DOCKER_ENTRYPOINT |
Docker Entrypoint default unix://var/run/docker.sock |
CF_EMAIL |
Your Cloudflare Email Address |
CF_TOKEN |
Token for the Domain |
DEFAULT_TTL |
TTL to apply to records - Default 120 |
TARGET_DOMAIN |
Destination Host to forward records to e.g. ``host.example.com` |
DOMAIN1 |
Domain 1 you wish to update records for. |
DOMAIN1_ZONE_ID |
Domain 1 Zone ID from Cloudflare |
DOMAIN1_PROXIED |
Domain 1 True of False if proxied |
DOMAIN2 |
(optional Domain 2 you wish to update records for. |
DOMAIN2_ZONE_ID |
Domain 2 Zone ID from Cloudflare |
DOMAIN2_PROXIED |
Domain 1 True of False if proxied |
DOMAIN3.... |
And so on.. |
For debugging and maintenance purposes you may want access the containers shell.
docker exec -it (whatever your container name is e.g. traefik-cloudflare-companion) bash
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