Create NCache Deployment in AKS

NCache can be incorporated with the Kubernetes cluster as a deployment pod. Once deployed, you can perform all managerial operations on your cache cluster inside your Azure Kubernetes cluster. Here's how you can create an NCache deployment pod.

Create NCache Deployment YAML File

Once the provided credentials have been saved locally (shown in the previous chapter), you need to deploy NCache. For this purpose, you need to create a YAML file, let's call it ncache.yaml. This file contains the information required to deploy NCache.

Your ncache.yaml should look somewhat like this:

Note

The parameters required to create this YAML file ready to be deployed are mentioned in the Properties table.

kind: Deployment
apiVersion: apps/v1    # it depends on the underlying Kubernetes version 
metadata:
  name: ncache
  labels:
    app: ncache
spec:
  replicas: 2
  selector:
    matchLabels:
      app: ncache
  template:
    metadata:
      labels:
        app: ncache 
    spec:
      nodeSelector:
        "kubernetes.io/os": linux
      containers:
      - name: ncache
        image: docker.io/alachisoft/ncache:enterprise-server-linux-5.0.2
        resources:
          limits:
            memory: "200Mi"
            cpu: "2"
          requests: 
            memory: "100Mi"
            cpu: "1"
        ports:
        - name: management-tcp      # for tcp communication
          containerPort: 8250
        - name: management-http     # for http communication 
          containerPort: 8251
        - name: client-port         # for client communication
          containerPort: 9800
        - name: management-bridge   # for bridge communication 
          containerPort: 8260

Creating NCache Deployment

After ncache.yaml has been created, run the following command in Shell. This command fetches the deployment file and creates a pod.

kubectl create -f [dir]/ncache.yaml

Properties

Following are the properties of the parameters specific to Kubernetes. The required parameters to create the YAML file are explained below:

Parameters	Description
kind	This can be many different types like a Deployment, a Service, DaemonSet or StatefulSet.
apiVersion	Specifies the version of the kind and it depends on the underlying version of Kubernetes.
metadata	Specifies details of the deployment.
name	Specifies the name of your deployment.
labels	Specifies key-value pair of resources that are used for identification purpose inside the Kubernetes cluster.
spec	Specifies logical details of the deployment.
imagePullSecrets	Specifies the private registry from where the image needs to be pulled.
replicas	Specifies the number of replica pods to be created at the time of deployment.
template	Specifies the information required for pulling image and creating port connection.
nodeSelector	Specifies the node on which the underlying container needs to be hosted.
clusterIP	Specifies the cluster IP required for external communication. Setting its value as None means that the service will not be accessible outside the cluster.
selector	Specifies the parameters that define selection criteria of the services.
type	Specifies the type of the service to be created.
sessionAffinity	Specifies the parameter that decides the persistence of a session.
containers	Specifies parameters required for initializing image and ports.
image	Specifies the path of the image that needs to be pulled.
resources	Specifies CPU or memory allocation for a container.
limits	Specifies CPU or memory limit.
requests	Specifies CPU or memory request for a container.
ports	Specifies name and port number of the port required for communication. There can be one or multiple ports depending on your deployment.
containerPort	Specifies port number of the deployment ports.
port	Specifies a port number.
targetPort	Specifies the port that needs to be targeted against the provided port number.

After creating NCache deployment, the next step is to create discovery service for NCache clients, explained in the next chapter.

See Also

Create Kubernetes Cluster in Azure
Create Discovery Service in AKS
Create Gateway Service in AKS
Create NCache Client Deployment in AKS