Mailgun operator

Declare your mailgun configuration using Kubernetes custom resources

Available :

• Create your domain
• Configure webhooks
• Configure routes

Installation

kubectl apply -f https://raw.githubusercontent.com/whyseco/mailgun-operator/master/deploy/bundle.yaml

Usage

Prerequisite

You need to have a mailgun account and retrieve the api key available at https://app.mailgun.com/app/account/security/api_keys

Store your apiKey in a kubernetes secret :

apiVersion: v1
kind: Secret
metadata:
  name: mailgun-secret
type: Opaque
stringData:
  apiKey: <apiKey>

The name of the secret will be use when declaring mailgun object

And store it in your kubernetes cluster kubectl apply -f secret.yaml

Domain

The mailgun operator can create the domain in mailgun for you. It will store domain dns information on the object status

mg-domain.yaml

apiVersion: mailgun.com/v1alpha1
kind: MailgunDomain
metadata:
  name: example-mailgundomain
spec:
  domain: mg.foo.com
  secretName: mailgun-secret

Where the domain is the domain name you wanna use in mailgun (see https://help.mailgun.com/hc/en-us/articles/202256730-How-Do-I-Pick-a-Domain-Name-for-My-Mailgun-Account-)

You can also set the following parameters :

dkimKeySize: 2048
forceDkimAuthority: true
password: 123456
spamAction: tag
webScheme: https
wildcard: false

For more information see mailgun api documentation https://documentation.mailgun.com/en/latest/api-domains.html#domains

Execute kubectl apply -f mg-domain.yaml to create your domain, deleting the object will delete the domain on mailgun

Webhooks

The mailgun operator can configure your domain webhooks in mailgun.

mg-webhooks.yaml

apiVersion: mailgun.com/v1alpha1
kind: MailgunWebhook
metadata:
  name: mailgun-test
spec:
  domain: mg.foo.com
  secretName: mailgun-secret
  opened:
    - https://myapi.foo.com/api/mailgun
  clicked:
    - https://myapi.foo.com/api/mailgun

You can use all available kind clicked, complained, delivered, opened, permanentFail, temporaryFail, unsubscribed and max 3 urls by kind

For more information see mailgun api documentation https://documentation.mailgun.com/en/latest/api-webhooks.html

Execute kubectl apply -f mg-webhooks.yaml to configure webhooks, deleting the object will delete the webhooks on mailgun

Routes

The mailgun operator can configure your routes in mailgun.

mg-routes.yaml

apiVersion: mailgun.com/v1alpha1
kind: MailgunRoute
metadata:
  name: example-mailgunroute
spec:
  domain: mg.foo.com
  secretName: mailgun-secret
  expression: match_recipient(".*@bar.com")
  priority: 0
  actions:
    - forward("mailbox@foo.com")
    - forward("http://myapi.foo.com/messages")

For more information see mailgun api documentation https://documentation.mailgun.com/en/latest/api-webhooks.html

Execute kubectl apply -f mg-routes.yaml to configure routes, deleting the object will delete the routes on mailgun

Motivations

All external services are part of your infrastructure and their configurations is almost always done by a human. I needed to version my external service configuration and have an automatic way to provide configuration for every environment. Kubernetes custom resources with a mailgun operator is the perfect way to have a declarative configuration for my external services.

Declare all the things : https://medium.com/@kyann/declare-all-the-things-9048397f183e