Kubernetes is a powerful and popular container orchestration platform that allows for the deployment and management of containerized applications at scale. One of the key features of Kubernetes is the ability to extend its functionality through add-ons. Add-ons are additional components that can be deployed on a Kubernetes cluster to provide extra capabilities such as monitoring, logging, and security.
In this article, we will discuss the two ways to deploy Kubernetes add-ons: statically and dynamically.
Static deployment of Kubernetes add-ons
Static deployment of Kubernetes add-ons involves deploying the add-on as a set of YAML manifests that define the desired state of the add-on in the cluster. This approach is suitable for add-ons that are not expected to change frequently or require complex configurations.
Step-by-step instructions:
Choose the add-on you want to deploy.
Download the YAML manifests for the add-on from the official Kubernetes repository or from the add-on provider's website.
Open the YAML manifests in a text editor and customize the configuration parameters as needed.
Deploy the YAML manifests using the kubectl apply command:
kubectl apply -f <addon_manifest.yaml>
Verify that the add-on has been successfully deployed by checking its status using the kubectl get command:
kubectl get <addon_resource>
Dynamic deployment of Kubernetes add-ons
Dynamic deployment of Kubernetes add-ons involves deploying the add-on using a Helm chart. Helm is a package manager for Kubernetes that allows for the deployment and management of complex applications and add-ons using pre-defined templates called charts. This approach is suitable for add-ons that require frequent updates or have complex configurations.
Step-by-step instructions:
Install Helm on your local machine and initialize the Helm client:
helm init
Add the Helm repository for the add-on you want to deploy:
helm repo add <addon_repository_name> <addon_repository_url>
Update the Helm repository:
helm repo update
Search for the add-on you want to deploy:
helm search <addon_name>
Install the add-on using the Helm chart:
helm install <addon_name> <addon_repository_name>/<addon_chart_name>
Verify that the add-on has been successfully deployed by checking its status using the kubectl get command:
kubectl get <addon_resource>
In this article, we have discussed the two ways to deploy Kubernetes add-ons: statically and dynamically. Static deployment involves deploying the add-on as a set of YAML manifests, while dynamic deployment involves deploying the add-on using a Helm chart. Both approaches have their advantages and disadvantages, and the choice depends on the specific requirements of the add-on and the cluster.
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That's it for this post. Keep practicing and have fun. Leave your comments if any.