Installation

If ZSH completion is not already enabled, you have first to execute the following once:

echo "autoload -U compinit; compinit" >> ~/.zshrc

To load completions for each session, execute once:

liqoctl completion zsh > "${fpath[1]}/_liqoctl"
source ~/.zshrc

To load completions for the current session, execute once:

liqoctl completion fish | source

To load completions for each session, execute once:

liqoctl completion fish > ~/.config/fish/completions/liqoctl.fish

To load completions for the current session, execute once:

liqoctl completion powershell | Out-String | Invoke-Expression

To load completions for each session, execute once:

liqoctl completion powershell > liqoctl.ps1

and source this file from your PowerShell profile.

Supported CNIs

Liqo supports Kubernetes clusters using the following CNIs:

• Weave
• Flannel
• Canal
• Calico

If you are installing Liqo on a cluster with Calico, you MUST read the dedicated configuration page to avoid unwanted misconfigurations.

Configuration

You only have to export the KUBECONFIG environment variable. Otherwise, liqoctl will use the kubeconfig in kubectl default path (i.e. ${HOME}/.kube/config )

export KUBECONFIG=/your/kubeconfig/path

Supported CNIs

Liqo supports EKS clusters using the default CNI:

• AWS EKS - amazon-vpc-cni-k8s

Configuration

Liqo leverages AWS credentials to authenticate peered clusters. Specifically, in addition to the read-only permissions used to configure the cluster installation (i.e., retrieve the appropriate parameters), Liqo uses AWS users to map peering access to EKS clusters.

To install Liqo on EKS, you should log in using the AWS cli (if you already did that, you can skip this step). This is widely documented on the official CLI documentation.

In a nutshell, after having installed the CLI, you have to set up your identity:

aws configure

Before continuing, you should first export few variables about your cluster:

export EKS_CLUSTER_NAME=liqo-cluster # the name of the target cluster 
export EKS_CLUSTER_REGION=my-cluster # the AWS region where the cluster is deployed

Second, you should export the cluster’s KUBECONFIG if you have not already. You may use the following CLI command:

aws eks --region ${EKS_CLUSTER_REGION} update-kubeconfig --name ${EKS_CLUSTER_NAME}

Supported CNIs

Liqo supports AKS clusters using the following CNIs:

• Azure AKS - Kubenet
• Azure AKS - Azure CNI

Configuration

First, you should have the AZ cli installed and your AKS cluster deployed. If you haven’t, you can follow the official guide.

Second, you should log-in:

az login

First, let’s start exporting required variables:

export AKS_RESOURCE_GROUP=myResourceGroup # the resourceGroup where the cluster is created
export AKS_RESOURCE_NAME=myCluster # the name of AKS cluster resource on Azure
export AKS_SUBSCRIPTION_ID=subscriptionId # the subscription id associated to the AKS cluster's resource group 

Supported CNIs

Liqo supports GKE clusters using the default CNI:

• Google GKE - VPC-Native

Configuration

To install Liqo on GKE, you should at first create a service account for liqoctl, granting the read rights for the GKE clusters (you may reduce the scope to a specific cluster if you prefer).

First, let’s start exporting required variables:

export GKE_SERVICE_ACCOUNT_ID=liqoctl-sa #the name of the service account used to interact by liqoctl with GCP
export GKE_PROJECT_ID=XYZ # the id of the GCP project where your cluster was created
export GKE_SERVICE_ACCOUNT_PATH=~/.liqo/gcp_service_account # the path where the google service account is stored
export GKE_CLUSTER_ZONE=europe-west-1b # the GCP zone where your GKE cluster is executed
export GKE_CLUSTER_ID=liqo-cluster # the name of the GKE resource on GCP

Second, you should create a GCP Service account. This will provide you an identity used by Liqoctl to query all the information needed to properly configure Liqo on your cluster.

The ServiceAccount can be created using:

gcloud iam service-accounts create ${GKE_SERVICE_ACCOUNT_ID} \
    --description="DESCRIPTION" \
    --display-name="DISPLAY_NAME" \
    --project="${GKE_PROJECT_ID}"

Third, you should provide the ServiceAccount just created with the rights to inspect the cluster and virtual networks parameters:

gcloud projects add-iam-policy-binding ${GKE_PROJECT_ID} \
    --member="serviceAccount:${GKE_SERVICE_ACCOUNT_ID}@${GKE_PROJECT_ID}.iam.gserviceaccount.com" \
    --role="roles/container.clusterViewer"
gcloud projects add-iam-policy-binding ${GKE_PROJECT_ID} \
    --member="serviceAccount:${GKE_SERVICE_ACCOUNT_ID}@${GKE_PROJECT_ID}.iam.gserviceaccount.com" \
    --role="roles/compute.networkViewer"

Fourth, you should create and download valid service accounts keys, as presented by the official documentation.

The keys will be used by liqoctl to authenticate to GCP as the service account we just created.

gcloud iam service-accounts keys create ${GKE_SERVICE_ACCOUNT_PATH} \
    --iam-account=${GKE_SERVICE_ACCOUNT_ID}@${GKE_PROJECT_ID}.iam.gserviceaccount.com

Now, you can obtain the cluster kubeconfig with the following command:

gcloud container clusters get-credentials ${GKE_CLUSTER_ID} --zone ${GKE_CLUSTER_ZONE} --project ${GKE_PROJECT_ID}

The kubeconfig will be added to the current selected file (KUBECONFIG environment variable or the default path ~/.kube/config) or created otherwise.

You are ready to start the installation.

Supported CNIs

Liqo supports K3s clusters using the following CNIs:

• Weave
• Flannel
• Canal
• Calico

Configuration

You only have to export the KUBECONFIG environment variable. Otherwise, liqoctl will use the kubeconfig in kubectl default path (i.e. ${HOME}/.kube/config )

export KUBECONFIG=/your/kubeconfig/path

Liqo was tested running on OpenShift Container Platform (OCP) 4.8.

Configuration

You only have to export the KUBECONFIG environment variable. Otherwise, liqoctl will use the kubeconfig in kubectl default path (i.e. ${HOME}/.kube/config )

export KUBECONFIG=/your/kubeconfig/path