kops

kops 是一個生產級 Kubernetes 集群部署工具，可以在 AWS、GCE、VMWare vSphere 等平臺上自動部署高可用的 Kubernetes 集群。主要功能包括

  • 自動部署高可用的 kubernetes 集群

  • 支持從 kube-up 創建的集群升級到 kops 版本

  • dry-run 和自動冪等升級等基於狀態同步模型

  • 支持自動生成 AWS CloudFormation 和 Terraform 配置

  • 支持自定義擴展 add-ons

  • 命令行自動補全

安裝 kops 和 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

在 AWS 上面部署

首先需要安裝 AWS CLI 並配置 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>

創建 route53 域名

aws route53 create-hosted-zone --name dev.example.com --caller-reference 1

創建 s3 存儲 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

部署 Kubernetes 集群

export KOPS_STATE_STORE=s3://clusters.dev.example.com

kops create cluster --zones=us-east-1c useast1.dev.example.com --yes

當然，也可以部署一個高可用的集群

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

刪除集群

kops delete cluster --name ${NAME} --yes

在 GCE 上面部署

# 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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