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Combined and separated Ingress setup

Camunda 8 Self-Managed has multiple web applications and gRPC services. Both can be accessed externally using Ingress. There are two ways to do this:

  1. Combined setup: In this setup, there are two Ingress objects: one Ingress object for all Camunda 8 web applications using a single domain. Each application has a sub-path e.g. camunda.example.com/operate, and camunda.example.com/optimize and another Ingress which uses gRPC protocol for Zeebe Gateway e.g. zeebe.camunda.example.com.
  2. Separated setup: In this setup, each component has its own Ingress/host e.g. operate.camunda.example.com, optimize.camunda.example.com, zeebe.camunda.example.com, etc.

There are no significant differences between the two setups. Rather, they both offer flexibility for different workflows.

note

Camunda 8 Helm chart doesn't manage or deploy Ingress controllers, it only deploys Ingress resources. Hence, this Ingress setup will not work without an Ingress controller running in your cluster.

Preparation​

  • An Ingress controller should be deployed in advance. The examples below use the ingress-nginx controller, but any Ingress controller could be used by setting ingress.className.
  • TLS configuration is not handled in the examples because it varies between different workflows. It could be configured directly using ingress.tls options or via an external tool like Cert-Manager using ingress.annotations. For more details, check available configuration options.

Configuration​

In this setup, a single Ingress/domain is used to access Camunda 8 web applications, and another for Zeebe Gateway. By default, all web applications use / as a base, so we just need to set the context path, Ingress configuration, and authentication redirect URLs.

Camunda 8 Self-Managed Architecture Diagram - Separated Ingress

# Chart values for the Camunda 8 Helm chart in combined Ingress setup.

# This file deliberately contains only the values that differ from the defaults.
# For changes and documentation, use your favorite diff tool to compare it with:
# https://artifacthub.io/packages/helm/camunda/camunda-platform#parameters

# IMPORTANT: Make sure to change "camunda.example.com" to your domain.

global:
  ingress:
    enabled: true
    className: nginx
    host: "camunda.example.com"
  identity:
    auth:
      publicIssuerUrl: "https://camunda.example.com/auth/realms/camunda-platform"
      operate:
        redirectUrl: "https://camunda.example.com/operate"
      tasklist:
        redirectUrl: "https://camunda.example.com/tasklist"
      optimize:
        redirectUrl: "https://camunda.example.com/optimize"
      webModeler:
        redirectUrl: "https://camunda.example.com/modeler"

identity:
  contextPath: "/identity"
  fullURL: "https://camunda.example.com/identity"

operate:
  contextPath: "/operate"

optimize:
  contextPath: "/optimize"

tasklist:
  contextPath: "/tasklist"

webModeler:
  # The context path is used for the web application that will be accessed by users in the browser.
  # In addition, a WebSocket endpoint will be exposed on "[contextPath]-ws", e.g. "/modeler-ws".
  contextPath: "/modeler"

zeebe-gateway:
  ingress:
    enabled: true
    className: nginx
    host: "zeebe.camunda.example.com"
Web Modeler

The configuration above only contains the Ingress-related values under webModeler. Note the additional installation instructions and configuration hints.

Using the custom values file, deploy Camunda 8 as usual:

helm install demo camunda/camunda-platform -f values-combined-ingress.yaml

Once deployed, you can access the Camunda 8 components on:

  • Web applications: https://camunda.example.com/[identity|operate|optimize|tasklist|modeler]
    • Note: Web Modeler also exposes a WebSocket endpoint on https://camunda.example.com/modeler-ws. This is only used by the application itself and not supposed to be accessed by users directly.
  • Keycloak authentication: https://camunda.example.com/auth
  • Zeebe Gateway: grpc://zeebe.camunda.example.com

Ingress controllers​

Ingress resources require the cluster to have an Ingress controller running. There are many options for configuring your Ingress controller. If you are using a cloud provider such as AWS or GCP, we recommend you follow their Ingress setup guides if an Ingress controller is not already pre-installed.

Example local configuration​

An Ingress controller is also required when working on a local Camunda 8 installation. Take a look at an Ingress controller configuration using the ingress-nginx controller:

# ingress_nginx_values.yml
controller:
  updateStrategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1
  service:
    type: NodePort

  publishService:
    enabled: false

To install this ingress-nginx controller to your local cluster, execute the following command:

helm install -f ingress_nginx_values.yml \
ingress-nginx ingress-nginx \
--repo https://kubernetes.github.io/ingress-nginx \
--version "4.9.0" \
--namespace ingress-nginx \
--create-namespace

Troubleshooting​

If something is not working as expected, check the guide for general deployment troubleshooting.