docs: update bluecat tutorial

* Updated with v0.8.0 details
* Document getting credentials via environment variables

README.md

@@ -129,6 +129,7 @@ The following tutorials are provided:
 * [Azure DNS](docs/tutorials/azure.md)
 * [Azure Private DNS](docs/tutorials/azure-private-dns.md)
 * [Cloudflare](docs/tutorials/cloudflare.md)
+* [BlueCat](docs/tutorials/bluecat.md)
 * [CoreDNS](docs/tutorials/coredns.md)
 * [DigitalOcean](docs/tutorials/digitalocean.md)
 * [Hetzner](docs/tutorials/hetzner.md)

docs/tutorials/bluecat.md

@@ -1,17 +1,20 @@
 # Setting up external-dns for BlueCat
 
+The first external-dns release with with BlueCat provider support is v0.8.0.
+
 ## Prerequisites
 Install the BlueCat Gateway product and deploy the [community gateway workflows](https://github.com/bluecatlabs/gateway-workflows).
 
 ## Configuration Options
 
-The options for configuring the Bluecat Provider are available through the json file provided to External-DNS via the flag `--bluecat-config-file`.
+The options for configuring the Bluecat Provider are available through the json file provided to External-DNS via the flag `--bluecat-config-file`. The
+BlueCat Gateway username and password can be supplied using the configuration file or environment variables `BLUECAT_USERNAME` and `BLUECAT_PASSWORD`.
 
 | Key               | Required           |
 | ----------------- | ------------------ |
 | gatewayHost       | Yes                |
-| gatewayUsername   | Yes                |
-| gatewayPassword   | Yes                |
+| gatewayUsername   | No                 |
+| gatewayPassword   | No                 |
 | dnsConfiguration  | Yes                |
 | dnsView           | Yes                |
 | rootZone          | Yes                |
@@ -34,19 +37,20 @@ EOF
 kubectl create secret generic bluecatconfig --from-file ~/bluecat.json -n bluecat-example
 ```
 
-Setup up deployment/service account:
+Setup up namespace, deployment, and service account:
 ```
+kubectl create namespace bluecat-example
+cat << EOF > ~/bluecat.yml
+---
 apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: external-dns
-  namespace: bluecat-example
 ---
 apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: external-dns
-  namespace: bluecat-example
 spec:
   selector:
     matchLabels:
@@ -65,7 +69,7 @@ spec:
             secretName: bluecatconfig
       containers:
       - name: external-dns
-        image: k8s.gcr.io/external-dns/external-dns:$TAG # no released versions include the bluecat provider yet
+        image: k8s.gcr.io/external-dns/external-dns:v0.8.0
         volumeMounts:
           - name: bluecatconfig
             mountPath: "/etc/external-dns/"
@@ -76,4 +80,6 @@ spec:
         - --provider=bluecat
         - --txt-owner-id=bluecat-example
         - --bluecat-config-file=/etc/external-dns/bluecat.json
+EOF
+kubectl apply -f ~/bluecat.yml -n bluecat-example
 ```