Installing Connectware (Kubernetes)

To install Connectware on Kubernetes, you must complete the following tasks:

Add the Helm chart repository.
Create a values.yaml file.
Install Connectware.
Verify the installation.
Log in for the first time.

Prerequisites

Before you start with the Connectware installation, make sure that you meet the following prerequisites:

You have a valid license key.
Helm version 3 is installed on your system.
The Kubernetes command line tool kubectl is configured and has access to the target installation.
Your Kubernetes cluster fulfills the cluster requirements.
You have chosen a Kubernetes namespace as target for your installation (e.g. cybus).
You have chosen a name for your installation (e.g. connectware).

Adding the Helm Chart Repository

To use the Connectware Helm chart, add the Connectware Helm chart repository.

Example

helm repo add <local-repo> https://repository.cybus.io/repository/connectware-helm

Configuring the values.yaml File

The values.yaml file is the configuration file for an application that is deployed through Helm. The values.yaml file allows you to configure your Connectware installation. For example, edit deployment parameters, manage resources, and update your Connectware to a new version.

In this documentation, we will focus on a basic Kubernetes configuration and commonly used parameters.

We recommend that you store the values.yaml file in a version control system.

Creating a Copy of the Default values.yaml File

A Helm chart contains a default configuration. It is likely that you only need to customize some of the configuration parameters. We recommend that you create a copy of the default values.yaml file named default-values.yaml and a new, empty values.yaml file to customize specific parameters.

Enter the following code to extract the default values and store them in a file named default-values.yaml.

Example

helm show values cybus/connectware > default-values.yaml

Creating a values.yaml File

When you have created the default-values.yaml file, you can create the values.yaml file to add your custom configuration parameters.

Enter the following code. Substitute the editor vi with your preferred editor.

Example

vi values.yaml

Specifying the License Key

To install Connectware, you need a valid license key.

In the values.yaml file, specify the license key in the Helm value global.licenseKey.

Example

global:
    licensekey: cY9HiVZJs8aJHG1NVOiAcrqC_ # example value

Specifying the Broker Cluster Secret

You must specify a secret for the broker cluster. The cluster secret value is used to secure your broker cluster, just like a password.

Treat the broker cluster secret with the same level of care as a password.

In the values.yaml file, specify the broker cluster secret in the Helm value global.broker.clusterSecret.

Example

global:
    licensekey: cY9HiVZJs8aJHG1NVOiAcrqC_ # example value
    broker:
        clusterSecret: Uhoo:RahShie6goh # example value

Allowing Immutable Labels

For a fresh Connectware installation, we recommend that you set best-practice labels on immutable workload objects like StatefulSet volumes.

In the values.yaml file, set the Helm value global.setImmutableLabels to true.

Example

global:
    licensekey: cY9HiVZJs8aJHG1NVOiAcrqC_ # example value
    broker:
        clusterSecret: Uhoo:RahShie6goh # example value
    setImmutableLabels: true

Specifying the Broker Cluster Replica Count (Optional)

By default, Connectware uses three nodes for the broker cluster that moves data. You can specify a custom number of broker nodes. For example, increase the broker nodes to handle higher data loads or decrease the broker nodes for a testing environment.

In the values.yaml file, specify the number of broker nodes in the Helm value global.broker.replicaCount.

Example

global:
  licensekey: cY9HiVZJs8aJHG1NVOiAcrqC_ # example value
  broker:
    clusterSecret: Uhoo:RahShie6goh # example value
    replicaCount: 5
  setImmutableLabels: true
    clusterSecret: ahciaruighai_t2G # example value

Activating a Separate control-plane Broker (Optional)

By default, Connectware uses the same broker for data payload processing and control-plane communication. You can use a separate control-plane broker. This might be useful for production environments, as it provides higher resilience and better manageability in cases of the data broker becomes slow to respond due to high load.

In the values.yaml file, set the Helm valueglobal.controlPlaneBroker.enabledtotrue.
Specify a broker cluster secret in the Helm value global.controlPlaneBroker.clusterSecret.

Important: Treat the broker cluster secret with the same level of care as a password.

Example

global:
    licensekey: cY9HiVZJs8aJHG1NVOiAcrqC_ # example value
    broker:
        clusterSecret: Uhoo:RahShie6goh # example value
    setImmutableLabels: true
    controlPlaneBroker:
        enabled: true
        clusterSecret: ahciaruighai_t2G # example value

You can activate/deactivate this option within a scheduled maintenance window.

Specifying Which StorageClass Connectware Should Use (Optional)

A broker cluster can contain several Kubernetes StorageClasses. You can specify which StorageClass Connectware should use.

In the values.yaml file, specify the StorageClass in the Helm value global.storage.storageClassName.

Example

global:
    licensekey: cY9HiVZJs8aJHG1NVOiAcrqC_ # example value
    broker:
        clusterSecret: Uhoo:RahShie6goh # example value
    setImmutableLabels: true
    storage:
        storageClassName: gp2 # example value

There are several configuration parameters to control the StorageClass of each volume that Connectware uses.

Specifying CPU and Memory Resources (Optional)

By default, Connectware is configured for high-performance systems and according to the guaranteed Quality of Service (QoS) class. However, you can use the Kubernetes resource management values requests and limits to specify the CPU and memory resources that Connectware is allowed to use.

Adjusting CPU and memory resources can impact the performance and availability of Connectware. When you customize the settings for CPU and memory resources, make sure that you monitor the performance and make adjustments if necessary.

In the values.yaml file, specify the CPU and memory limits and requests in the Helm value global.podResources. Specify the limits and requests as Kubernetes quantities.
You can use the default values shipped with Connectware as a starting point. You can find these in your default-values.yaml file you created earlier.

Example

global:
    licensekey: cY9HiVZJs8aJHG1NVOiAcrqC_ # example value
    broker:
        clusterSecret: Uhoo:RahShie6goh # example value
    setImmutableLabels: true
    podResources:
        distributedProtocolMapper:
            limits:
                cpu: 2000m
                memory: 3000Mi
            requests:
                cpu: 1500m
                memory: 1500Mi

Related Links

Starting the Connectware installation

When you are done customizing your installation through your Helm values, you can deploy Connectware onto your Kubernetes cluster.

Enter the following command: helm install
Specify the installation name. For example, connectware.
Specify the target namespace. For example, cybus.

Example

helm install <installation-name> cybus/connectware -f ./values.yaml -n <namespace> --create-namespace

This deploys Connectware according to your kubectl configuration.

Verifying the Connectware installation

You can monitor the Connectware installation progress to verify that everything runs smoothly, to know when the installation is successful, or to investigate potential issues.

Monitoring the Connectware installation progress

The Connectware installation can take a few minutes. To monitor the installation process, do one of the following:

To monitor the current status of the installation process, enter the following command:

kubectl get pods -n <namespace>

To monitor the continuous progress of the installation process, enter the following command:

while [ True ]; do clear; kubectl get pod -n <namespace>; sleep 5; done

To stop monitoring the continuous progress of the installation process , press Ctrl+C.

Pod stages during the Connectware installation

During the Connectware installation, the pods go through the following stages:

Pending
PodInitializing
ContainerCreating
Init:x/x
Running

When pods reach the STATUS Running, they go through their individual startup before reporting as Ready. To be fully functional, all pods must reach the STATUS Running and report all their containers as ready. This is indicated by them showing the same number on both sides of the / in the column READY.

Example

$ kubectl get pod -n <namespace>

NAME

READY

STATUS

RESTARTS

AGE

admin-web-app-7cd8ccfbc5-bvnzx

1/1

Running

3h44m

auth-server-5b8c899958-f9nl4

1/1

Running

3m3s

broker-0

1/1

Running

3h44m

broker-1

1/1

Running

2m1s

connectware-7784b5f4c5-g8krn

1/1

Running

21s

container-manager-558d9c4cbf-m82bz

1/1

Running

3h44m

ingress-controller-6bcf66495c-l5dpk

1/1

Running

18s

postgresql-0

1/1

Running

3h44m

protocol-mapper-67cfc6c848-qqtx9

1/1

Running

3h44m

service-manager-f68ccb767-cftps

1/1

Running

3h44m

system-control-server-58f47c69bf-plzt5

1/1

Running

3h44m

workbench-5c69654659-qwhgc

1/1

Running

15s

At this point Connectware is installed and started. You can now make additional configurations or verify the installation status in the Connectware Admin UI.

Troubleshooting pod stages

If a pod is in another state than expected or if it is stuck at a certain stage for more than three minutes, there might be an issue.

To investigate the pod status, enter the following command:

kubectl describe pod <pod-name>

For help on solving issues, see Troubleshooting Connectware on Kubernetes.

Logging into Connectware for the First Time

You can access the Connectware Admin UI through the Kubernetes LoadBalancer Service. In your new Connectware installation, the LoadBalancer is named connectware. How to access the LoadBalancer depends on which LoadBalancer provider your cluster offers.

To check if your load balancer provider has connected to the connectware service, enter the following command:

Kubectl -n <namespace> get svc/connectware

Depending on the result, do one of the following:
1. If your IP address or hostname is displayed in the EXTERNAL-IP column, you can access the Connectware Admin UI through it.
2. If no load balancer provider is available in your cluster, you can add an external load balancer.
To verify that the installation was successful, enter the following command to forward the service to your local machine through kubectl:

Kubectl -n <namespace> port-forward svc/connectware 10443:443

Enter https://localhost:10443 to access the Connectware Admin UI. By default, Connectware rolls out its own PKI infrastructure.
Confirm the certificate warning in your browser.
Login with the following default credentials:
- Username: admin
- Password: admin

Important: After you log in for the first time, immediately change the username and password.

Click Change Password and change the default credentials.
Select System > Status and verify that all components have the status Running.

Result: Your Connectware on Kubernetes installation is now ready.

Related Links

LoadBalancer (Kubernetes documentation)

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Last updated 5 months ago

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