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Prerequisite

Configuration

export TF_VAR_access_key_id="myaccesskey"
export TF_VAR_secret_key_id="mysecretkey"
export TF_VAR_region="eu-west-2"

By editing 'terraform.tfvars', you can adjust the number of worker/control-plane nodes, size of node and more.

WARNING: Make sure that image_id corresponds to an recent Ubuntu image for your region. You can get the latest image id on Outscale's documentation.

Deploying infrastructure

This step will create infrastructure components as well as configuration files needed to bootstrap cluster creation.

terraform init
terraform apply

Deploying Kubernetes cluster

Once your infrastructure ready, you are ready to deploy your cluster using RKE:

./rke/rke up --config rke/cluster.yml
sed -i "s|server:.*$|server: \"$(cat kube-apiserver-url.txt):6443\"|" rke/kube_config_cluster.yml

Note: the sed command is used to setup load balancer in kubeconfig file, see this issue for more details.

Quick testing the cluster

Once RKE deployment is successful, you should be able to list nodes and use your cluster.

export KUBECONFIG=rke/kube_config_cluster.yml
kubectl get nodes

For further testing, check testing section.

If needed, you can connect to any worker or control-plane node using SSH:

ssh -F ssh_config worker-0
ssh -F ssh_config control-plane-0

Deploy more things

As this cluster to deployed on Outscale IaaS, you are probably interested to install Outscale's Cloud Controller Manager (CCM) and Outscale's Cloud Storage Interface (CSI).

See /addons for even more things to deploy (not limited to).

Cleaning Up

First destroy your cluster using RKE, this will also remove dynamically created cloud resources perfomed by CCM or CSI.

rke remove --config rke/cluster.yml

And then destroy the infrastructure:

terraform destroy

Alternatively, you can manually cleanup your resources if something goes wrong:

  • Connect to cockpit interface
  • Go to VPC->VPCs, Select the created VPC, click the "Teardown" button and validate.
  • Go to Network/Security->Keypairs and delete Keypairs created for each node
  • Go to Network/Security->External Ips and delete EIP created for each control-planes
  • Go to Compute->Outscale Machine Image and delete created image