kops (Kubernetes OPerationS) | GitHub

A CLI for deploying a cluster to certain cloud vendors. A wrapper for Kubernetes tools and cloud-provider APIs. Create, destroy, upgrade and maintain production-grade Kubernetes clusters.

Currently available for AWS, GCP, DigitalOcean, and Hetzner.

Using this tool, expect a highest-cost implementation. That is, wherever there is a choice between a premium option and a lesser-cost option of any cloud-service dependency, expect it to select the former.

Install @ Ubuntu (kops.sh)

Install @ Vagrant box (VM)

• See kops.sh
  @ Vagrantfile per Script Provisioner

  config.vm.provision "shell", path: "kops.sh", privileged: false
  

Project(s)

• PRJ.K8s.kops@AWS (kops commands reference (.md docs)

• kops/ingress-nginx

• AWS-ELB-specific LoadBalancer configurations.

Getting Started

Create

export NAME='k8s01.example.com'
export KOPS_STATE_STORE=s3://foo.com-abc123-state-store
# Create (builds within ASGs, so monitored/rebuilt on fail)
kops create cluster --zones 'us-east-1e' $NAME
# Edit (loads from S3 state store bucket)
kops edit cluster $NAME  # per $EDITOR
# Build (resources)
kops update cluster $NAME --yes

• Another kops Env.Var.

  # Export, so needn't include NAME @ every command
  export KOPS_CLUSTER_NAME=$NAME
  

View

# kops generates creds for kubectl
cat ~/.kube/config

# Validate
kops validate cluster
# List all clusters 
kops get clusters
# List  machines (master + workers)
kops get instancegroups
# List nodes
kubectl get nodes
# List system components
kubectl -n kube-system get po

Delete

# View resources to be destroyed
kops delete cluster --name ${NAME}
# Delete everything (all cluster resources)
kops delete cluster --name ${NAME} --yes

Other interesting modes

# Build a terraform model: 
    --target=terraform 
# Build a Cloudformation model: 
    --target=cloudformation # json @ 'out/cloudformation'
# Specify k8s build: 
    --kubernetes-version=1.2.2
# Run nodes in multiple zones: 
    --zones=us-east-1b,us-east-1c,us-east-1d
# Run with a HA master: 
    --master-zones=us-east-1b,us-east-1c,us-east-1d
# Specify the number of nodes: 
    --node-count=4
# Specify the node size: 
    --node-size=m4.large
# Specify the master size: 
    --master-size=m4.large
# Override the default DNS zone: 
    --dns-zone=$_DOMAIN