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GCP Google Kubernetes Engine Access to Multiple Clusters

GCP Google Kubernetes Engine Access to Multiple Clusters

Step-00: Pre-requisites¶

We should have the two clusters created and ready
standard-cluster-private-1
autopilot-cluster-private-1

Step-01: Introduction¶

Configure access to Multiple Clusters
Understand kube config file $HOME/.kube/config
Understand kubectl config command
kubectl config view
kubectl config current-context
kubectl config use-context
kubectl config get-context
kubectl config get-clusters

Step-02: Pre-requisite¶

Verify if you have any two GKE Clusters created and ready for use
standard-cluster-private-1
autopilot-cluster-private-1

Step-03: Clean-Up kube config file¶

# Clean existing kube configs
cd $HOME/.kube
>config
cat config

Step-04: Configure Standard Cluster Access for kubectl¶

Understand commands
kubectl config view

kubectl config current-context

# View kubeconfig
kubectl config view

# Configure kubeconfig for kubectl: standard-cluster-private-1 
gcloud container clusters get-credentials standard-cluster-private-1 --region us-central1 --project kdaida123

# View kubeconfig
kubectl config view

# View Cluster Information
kubectl cluster-info

# View the current context for kubectl
kubectl config current-context

Step-05: Configure Autopilot Cluster Access for kubectl¶

# Configure kubeconfig for kubectl: autopilot-cluster-private-1
gcloud container clusters get-credentials autopilot-cluster-private-1 --region us-central1 --project kdaida123

# View the current context for kubectl
kubectl config current-context

# View Cluster Information
kubectl cluster-info

# View kubeconfig
kubectl config view

Step-06: Switch Contexts between clusters¶

Understand the kubectl config command use-context

# View the current context for kubectl
kubectl config current-context

# View kubeconfig
kubectl config view 
Get contexts.context.name to which you want to switch 

# Switch Context
kubectl config use-context gke_kdaida123_us-central1_standard-cluster-private-1

# View the current context for kubectl
kubectl config current-context

# View Cluster Information
kubectl cluster-info

Step-07: List Contexts configured in kubeconfig¶

# List Contexts
kubectl config get-contexts

Step-08: List Clusters configured in kubeconfig¶

# List Clusters
kubectl config get-clusters