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Listens for Docker Hub Webhook Calls and Upgrades Rancher Services

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Docker Hub Webhook to Rancher

Receives Webhook calls from Docker Hub and Calls In-Service Upgrades in Rancher

Based on the excellent work of Brian Goff (cpuguy83)

Usage

The Docker Way

Build a Docker image from the included Dockerfile:

docker build -t myorg/myproject-dockerhub-listener .

You must supply these environment variables to start the app listening:

Environment Variable Purpose
api_key API Key to use when calling the app (supply as request param in Docker Hub config)
rancher_url The URL if your Rancher Server API root (e.g. http://myrancher.example.com:8080/v1/projects/1a2)
rancher_user_key The API Access Key (create via 'API' in the Rancher console)
rancher_secret_key The API Secret Key
rancher_service The name of the rancher service you'd like to upgrade

Test locally, thus:

docker run -it -p 8080:8080 \
-e api_key="12345" \
-e rancher_url="http://myrancher.example.com:8080/v1/projects/1a2" \
-e rancher_user_key="1A2B3C4D5E6F1234567A" \
-e rancher_secret_key="fTEb6aGsD65RhNE32g6yTY1F8hCl5rQTz" \
-e rancher_service="myservice" \
-e listen_addr="0.0.0.0:8080" \
myorg/myproject-dockerhub-listener

The Manual Way

Add a config file using -config-file This file should be in INI format and is intended for use with handlers

Example

[apiKeys]
key = 1a2b3c4d5e6f

[rancher]
url = http://myrancher.example.com:8080/v1/projects/1a2
userkey = <Rancher API User Key>
secretkey = <Rancher API User Secret>
service = <Rancher Service Name>

Register a handler in handler.go You an use "Logger" as a reference to how to set this up.

cd hub-listener
go build
./hub-listener --listen=0.0.0.0:80 --config-file=config.ini

You should use SSL. To do so ad a tls section to your config file, with a cert and a key file

You should also use authentication. Right now DockerHub doesn't really support this, but you can use an api key as a query param. To handle this, you need to add an apikeys section to the config file along with a list of keys

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