Skip to content

Create Standard VPC for Lab in China Region or Global Region

using-cloudformation-template-

prep-cfn-template-

AWS_REGION=cn-north-1
export AWS_DEFAULT_REGION=${AWS_REGION}

UNIQ_STR=$(date +%Y%m%d-%H%M%S)
BUCKET_NAME=$(aws s3 mb s3://panlm-${UNIQ_STR} |awk '{print $2}')

wget -O aws-vpc.template.yaml https://panlm.github.io/EKS/cluster/aws-vpc.template.yaml
aws s3 cp aws-vpc.template.yaml s3://${BUCKET_NAME}/

# first 2 AZs
# separator `\,` is necessary for ParameterValue in cloudformation
TWOAZS=($(aws ec2 describe-availability-zones --query 'AvailabilityZones[].ZoneName' --output text |xargs -n 1 |sed -n '1,2p' |xargs |sed 's/ /\\,/g'))

using tgw or not

(option 1) if you create vpc in china region, you could put your existed tgw id here for attach automatically

# new vpc will connect with TGW, if TGW existed
TGW_ID=tgw-0ec1b74b7d8dcea74
TGW_NUMBER=$(aws ec2 describe-transit-gateways \
--filter Name=transit-gateway-id,Values=${TGW_ID} \
|jq -r '.TransitGateways | length')
if [[ ${TGW_NUMBER} -eq 1 ]]; then
  TGW_ATTACH=true
else
  TGW_ATTACH=false
fi
# do not create public subnet & igw
CREATE_PUB_SUB=false
CREATE_NAT=false

(option 2) you could create vpc without tgw

TGW_ATTACH=false
CREATE_PUB_SUB=true
CREATE_NAT=true

create-vpc-

create your vpc with specific CIDR

echo ${CIDR:=10.130}
export AWS_PAGER=""

STACK_NAME=aws-vpc-${CIDR##*.}-${UNIQ_STR}
# global region: amazonaws.com
# china region: amazonaws.com.cn
if [[ ${AWS_REGION%%-*} == "cn" ]]; then
  SUFFIX=".cn"
else
  SUFFIX=""
fi
aws cloudformation create-stack --stack-name ${STACK_NAME} \
  --parameters ParameterKey=AvailabilityZones,ParameterValue="${TWOAZS}" \
  ParameterKey=VPCCIDR,ParameterValue="${CIDR}.0.0/16" \
  ParameterKey=NumberOfAZs,ParameterValue=2 \
  ParameterKey=PublicSubnet1CIDR,ParameterValue="${CIDR}.128.0/24" \
  ParameterKey=PublicSubnet2CIDR,ParameterValue="${CIDR}.129.0/24" \
  ParameterKey=PublicSubnet3CIDR,ParameterValue="${CIDR}.130.0/24" \
  ParameterKey=PublicSubnet4CIDR,ParameterValue="${CIDR}.131.0/24" \
  ParameterKey=PrivateSubnet1ACIDR,ParameterValue="${CIDR}.0.0/19" \
  ParameterKey=PrivateSubnet2ACIDR,ParameterValue="${CIDR}.32.0/19" \
  ParameterKey=PrivateSubnet3ACIDR,ParameterValue="${CIDR}.64.0/19" \
  ParameterKey=PrivateSubnet4ACIDR,ParameterValue="${CIDR}.96.0/19" \
  ParameterKey=CreateTgwSubnets,ParameterValue="true" \
  ParameterKey=TgwSubnet1CIDR,ParameterValue="${CIDR}.132.0/24" \
  ParameterKey=TgwSubnet2CIDR,ParameterValue="${CIDR}.133.0/24" \
  ParameterKey=TgwSubnet3CIDR,ParameterValue="${CIDR}.134.0/24" \
  ParameterKey=TgwSubnet4CIDR,ParameterValue="${CIDR}.135.0/24" \
  ParameterKey=CreateTgwAttachment,ParameterValue="${TGW_ATTACH}" \
  ParameterKey=TransitGatewayId,ParameterValue="${TGW_ID}" \
  ParameterKey=CreatePublicSubnets,ParameterValue="${CREATE_PUB_SUB}" \
  ParameterKey=CreatePrivateSubnets,ParameterValue="true" \
  ParameterKey=CreateNATGateways,ParameterValue="${CREATE_NAT}" \
  --template-url https://${BUCKET_NAME}.s3.${AWS_REGION}.amazonaws.com${SUFFIX}/aws-vpc.template.yaml 

aws cloudformation wait stack-create-complete \
  --stack-name ${STACK_NAME}

get-vpc-id-

VPC_ID=$(aws cloudformation describe-stacks --stack-name ${STACK_NAME} --query 'Stacks[0].Outputs[?OutputKey==`VPCID`].OutputValue' --output text)

# PublicSubnet1ID=$(aws cloudformation --region ${AWS_REGION} describe-stacks --stack-name ${STACK_NAME} --query 'Stacks[0].Outputs[?OutputKey==`PublicSubnet1ID`].OutputValue' --output text)

(option) create cloud9 in target subnet

  • refer: setup-cloud9-for-eks 
    # name=<give your cloud9 a name>
datestring=$(date +%Y%m%d-%H%M)
name=${name:=cloud9-$datestring}
export AWS_DEFAULT_REGION=us-east-2 # need put each command

# VPC_ID=<your vpc id> 
# ensure you have public subnet in it
DEFAULT_VPC_ID=$(aws ec2 describe-vpcs \
  --filter Name=is-default,Values=true \
  --query 'Vpcs[0].VpcId' --output text \
  --region ${AWS_DEFAULT_REGION})
VPC_ID=${VPC_ID:=$DEFAULT_VPC_ID}

if [[ ! -z ${VPC_ID} ]]; then
  FIRST_SUBNET=$(aws ec2 describe-subnets \
    --filters "Name=vpc-id,Values=${VPC_ID}" \
    --query 'Subnets[?(AvailabilityZone==`'"${AWS_DEFAULT_REGION}a"'` && MapPublicIpOnLaunch==`true`)].SubnetId' \
    --output text \
    --region ${AWS_DEFAULT_REGION})
  aws cloud9 create-environment-ec2 \
    --name ${name} \
    --image-id amazonlinux-2-x86_64 \
    --instance-type m5.xlarge \
    --subnet-id ${FIRST_SUBNET} \
    --automatic-stop-time-minutes 10080 \
    --region ${AWS_DEFAULT_REGION} |tee /tmp/$$
  echo "Open URL to access your Cloud9 Environment:"
  C9_ID=$(cat /tmp/$$ |jq -r '.environmentId')
  echo "https://${AWS_DEFAULT_REGION}.console.aws.amazon.com/cloud9/ide/${C9_ID}"
else
  echo "you have no default vpc in $AWS_DEFAULT_REGION"
fi

description in this template

  • no s3 endpoint
  • security group named eks-shared-sg (only it self)
  • security group named normal-sg ( icmp/80/443 for all )
  • tag subnet
    • kubernetes.io/role/internal-elb = 1
    • kubernetes.io/role/elb = 1
    • (option) kubernetes.io/cluster/<vpc_name> = shared
  • verified in china region
  • add tgw subnet and associate tgw route table with 0.0.0.0/0 to tgw
  • add 10.0.0.0/8 route to public/private1A/private2A route table

refer