Install Hephy Workflow on Azure Container Service

Check Your Setup

First check that the helm command is available and the version is v2.5.0 or newer.

$ helm version
Client: &version.Version{SemVer:"v2.5.0", GitCommit:"012cb0ac1a1b2f888144ef5a67b8dab6c2d45be6", GitTreeState:"clean"}
Server: &version.Version{SemVer:"v2.5.0", GitCommit:"012cb0ac1a1b2f888144ef5a67b8dab6c2d45be6", GitTreeState:"clean"}

Finally, initialize Helm:

helm init

Ensure the kubectl client is installed and can connect to your Kubernetes cluster.

Add the Hephy Chart Repository

Helm changed its UX adding support for OCI, so helm repo add is not a thing anymore.

The Team Hephy Chart Repository contains everything needed to install Hephy Workflow onto a Kubernetes cluster, but Helm's legacy chart repository data structures are chronically unscalable.

As a result, there's no need to ever run this command again:

$ helm repo add hephy

(Note: at the time of this writing, the chartmuseum host is currently down for the count.)

Create New Azure Storage Account

It is recommended to use a dedicated storage account for the operational aspects of Workflow, which includes storing slug and container images, database backups, and disaster recovery. This storage account is passed as parameters during the helm install command in the next step. Replace the AZURE_SA_NAME variable with a unique name for your storage account and execute these commands.

$ export AZURE_SA_NAME=YourGlobalUniqueName
$ az storage account create -n $AZURE_SA_NAME -l $AZURE_DC_LOCATION -g $AZURE_RG_NAME --sku Standard_LRS
$ export AZURE_SA_KEY=`az storage account keys list -n $AZURE_SA_NAME -g $AZURE_RG_NAME --query [0].value --output tsv`

Note: Premium Storage skus are not supported yet due to lack of block blob storage support required for the deis database to function.

Install Hephy Workflow

Now that Helm is installed, and the repository has been added install Workflow by running:

$ helm install deis-hephy --namespace deis oci:// --set,azure.accountname=$AZURE_SA_NAME,azure.accountkey=$AZURE_SA_KEY,azure.registry_container=registry,azure.database_container=database,azure.builder_container=builder

Helm will install a variety of Kubernetes resources in the deis namespace. Wait for the pods that Helm launched to be ready. Monitor their status by running:

$ kubectl --namespace=deis get pods

If it's preferred to have kubectl automatically update as the pod states change, run (type Ctrl-C to stop the watch):

$ kubectl --namespace=deis get pods -w

Depending on the order in which the Workflow components initialize, some pods may restart. This is common during the installation: if a component's dependencies are not yet available, that component will exit and Kubernetes will automatically restart it.

Here, it can be seen that the controller, builder and registry all took a few loops before they were able to start:

$ kubectl --namespace=deis get pods
NAME                          READY     STATUS    RESTARTS   AGE
deis-builder-hy3xv            1/1       Running   5          5m
deis-controller-g3cu8         1/1       Running   5          5m
deis-database-rad1o           1/1       Running   0          5m
deis-logger-fluentd-1v8uk     1/1       Running   0          5m
deis-logger-fluentd-esm60     1/1       Running   0          5m
deis-logger-sm8b3             1/1       Running   0          5m
deis-minio-4ww3t              1/1       Running   0          5m
deis-registry-asozo           1/1       Running   1          5m
deis-router-k1ond             1/1       Running   0          5m
deis-workflow-manager-68nu6   1/1       Running   0          5m

Once all of the pods are in the READY state, Hephy Workflow is up and running!

Next, configure dns so you can register your first user and deploy an application.