kops
Kops is a top-tier tool for deploying Kubernetes clusters. Its versatility allows it to automatically set up high-availability Kubernetes clusters on platforms such as AWS, GCE, and VMWare vSphere. Here are some of its standout features:
Automated deployment of high-availability Kubernetes clusters.
Upgrade capability from clusters created with kube-up to Kops versions.
Dry-run and automatic idempotent upgrades, based on a state synchronization model.
Auto-generation of AWS CloudFormation and Terraform configurations.
Customizable extension add-ons.
Command-line auto-completion.
Installing kops and kubectl
# on macOS
brew install kubectl kops
# on Linux
wget https://github.com/kubernetes/kops/releases/download/1.7.0/kops-linux-amd64
chmod +x kops-linux-amd64
mv kops-linux-amd64 /usr/local/bin/kops
Launching on AWS
First, you'll need to install AWS CLI and configure IAM:
# install AWS CLI
pip install awscli
# configure iam
aws iam create-group --group-name kops
aws iam attach-group-policy --policy-arn arn:aws:iam::aws:policy/AmazonEC2FullAccess --group-name kops
aws iam attach-group-policy --policy-arn arn:aws:iam::aws:policy/AmazonRoute53FullAccess --group-name kops
aws iam attach-group-policy --policy-arn arn:aws:iam::aws:policy/AmazonS3FullAccess --group-name kops
aws iam attach-group-policy --policy-arn arn:aws:iam::aws:policy/IAMFullAccess --group-name kops
aws iam attach-group-policy --policy-arn arn:aws:iam::aws:policy/AmazonVPCFullAccess --group-name kops
aws iam create-user --user-name kops
aws iam add-user-to-group --user-name kops --group-name kops
aws iam create-access-key --user-name kops
# configure the aws client to use your new IAM user
aws configure # Use your new access and secret key here
aws iam list-users # you should see a list of all your IAM users here
# Because "aws configure" doesn't export these vars for kops to use, we export them now
export AWS_ACCESS_KEY_ID=<access key>
export AWS_SECRET_ACCESS_KEY=<secret key>
Next, create a route53 domain:
aws route53 create-hosted-zone --name dev.example.com --caller-reference 1
Then, set up an S3 storage bucket:
aws s3api create-bucket --bucket clusters.dev.example.com --region us-east-1
aws s3api put-bucket-versioning --bucket clusters.dev.example.com --versioning-configuration Status=Enabled
Now you're ready to deploy a Kubernetes cluster:
export KOPS_STATE_STORE=s3://clusters.dev.example.com
kops create cluster --zones=us-east-1c useast1.dev.example.com --yes
Want a high-availability cluster? No problem:
kops create cluster \
--node-count 3 \
--zones us-west-2a,us-west-2b,us-west-2c \
--master-zones us-west-2a,us-west-2b,us-west-2c \
--node-size t2.medium \
--master-size t2.medium \
--topology private \
--networking kopeio-vxlan \
hacluster.example.com
When your needs shift, you can delete your cluster:
kops delete cluster --name ${NAME} --yes
Launching on GCE
# Create cluster in GCE.
# This is an alpha feature.
export KOPS_STATE_STORE="gs://mybucket-kops"
export ZONES=${MASTER_ZONES:-"us-east1-b,us-east1-c,us-east1-d"}
export KOPS_FEATURE_FLAGS=AlphaAllowGCE
kops create cluster kubernetes-k8s-gce.example.com
--zones $ZONES \
--master-zones $ZONES \
--node-count 3
--project my-gce-project \
--image "ubuntu-os-cloud/ubuntu-1604-xenial-v20170202" \
--yes
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