Specify Ingress¶

Install Drycc Workflow (Specify ingress)¶

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

$ helm install drycc oci://registry.drycc.cc/charts/workflow \
    --namespace drycc \
    --set global.ingressClass=nginx \
    --set global.platformDomain=drycc.cc \
    --set builder.service.type=LoadBalancer

Of course, if you deploy it on a bare machine, you probably do not have Load Balancer. You need to use NodePort:

$ helm install drycc oci://registry.drycc.cc/charts/workflow \
    --namespace drycc \
    --set global.ingressClass=nginx \
    --set global.platformDomain=drycc.cc \
    --set builder.service.type=NodePort \
    --set builder.service.nodePort=32222

If you want to use Load Balancer on a bare machine, you can look at metallb

Where global.platformDomain is a required parameter that is traditionally not required for Workflow that is explained in the next section. In this example we are using drycc.cc for $hostname.

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

$ kubectl --namespace=drycc get pods

You should also notice that several Kubernetes ingresses has been installed on your cluster. You can view it by running:

$ kubectl get ingress --namespace drycc

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 waiting for storage before they were able to start:

$ kubectl --namespace=drycc get pods
NAME                          READY     STATUS    RESTARTS   AGE
drycc-builder-hy3xv            1/1       Running   5          5m
drycc-controller-g3cu8         1/1       Running   5          5m
drycc-controller-celery-cmxxn  3/3       Running   0          5m
drycc-database-rad1o           1/1       Running   0          5m
drycc-logger-fluentd-1v8uk     1/1       Running   0          5m
drycc-logger-fluentd-esm60     1/1       Running   0          5m
drycc-logger-sm8b3             1/1       Running   0          5m
drycc-storage-4ww3t              1/1       Running   0          5m
drycc-registry-asozo           1/1       Running   1          5m
drycc-rabbitmq-0               1/1       Running   0          5m

Install a Kubernetes Ingress Controller¶

Now that Workflow has been deployed with the global.ingressClass , we will need a Kubernetes ingress controller in place to begin routing traffic.

Here is an example of how to use traefik as an ingress controller for Workflow. Of course, you are welcome to use any controller you wish.

$ helm install traefik oci://registry.drycc.cc/charts/traefik \
    --name ingress \
    --namespace kube-system \
    --set ssl.enabled=true

Configure DNS¶

User must to set up a hostname, and assumes the *.$host convention.

We need to point the *.$host record to the public IP address of your ingress controller. You can get the public IP using the following command. A wildcard entry is necessary here as apps will use the same rule after they are deployed.

$ kubectl get svc ingress-traefik --namespace kube-system
NAME              CLUSTER-IP   EXTERNAL-IP      PORT(S)                      AGE
ingress-traefik   10.0.25.3    138.91.243.152   80:31625/TCP,443:30871/TCP   33m

If we were using drycc.cc as a hostname, we would need to create the following A DNS records.

Name	Type	Value
*.drycc.cc	A	138.91.243.152

Once all of the pods are in the READY state, and *.$host resolves to the external IP found above, the preparation of ingress has been completed!

After installing Workflow, register a user and deploy an application.

If your k8s does not provide public network loadblance, you need to install TCP proxy services such as haproxy on machines that can access both internal and external networks, and then expose 80 and 443.