개발자는 네트워크를 어려워한다. 네트워크를 알려준다~
AWS기본 네트워크 이해하기 - Public, Private , DB Subnet , NAT , ELB
AWS 기본 네트워크 구축하기 -Public, Private , DB Subnet , NAT , ELB
디폴트 네트워크 만들기
public subnet, private subnet 만들기
NAT만들기
로드 밸런서 만들기
public subnet 2개
private subnet 2개
NAT 2개
ELB 1개
NAT IP 2개를 협력업체에게 알려주어 방화벽 허용을 해야 한다.
확인해보자
NLB는 기본적으로 고정 IP를 사용한다.
ALB는 NLB+ ALB구성으로 고정 IP를 사용할수 있다.
1)
디폴트 VPC 만들기
2)
AWS 위저드 사용 - 부족한 부분 클릭 클릭
3) 콘솔에서 수동으로 클릭 클릭
Your VPCs New
public subnet 2개
private subnet 2개
NAT 2개
ELB 1개
4)
Cloud Formation 사용 - AWS IAC 툴이다.
또는 AWS CDK 사용.
pub2, pri2, ec2 1대
AWSTemplateFormatVersion: '2010-09-09'
Metadata:
AWS::CloudFormation::Interface:
ParameterGroups:
- Label:
default: "<<<<< EKSCTL MY EC2 >>>>>"
Parameters:
- ClusterBaseName
- KeyName
- SgIngressSshCidr
- MyInstanceType
- LatestAmiId
- Label:
default: "<<<<< Region AZ >>>>>"
Parameters:
- TargetRegion
- AvailabilityZone1
- AvailabilityZone2
- Label:
default: "<<<<< VPC Subnet >>>>>"
Parameters:
- VpcBlock
- PublicSubnet1Block
- PublicSubnet2Block
- PrivateSubnet1Block
- PrivateSubnet2Block
Parameters:
ClusterBaseName:
Type: String
Default: myeks
AllowedPattern: "[a-zA-Z][-a-zA-Z0-9]*"
Description: must be a valid Allowed Pattern '[a-zA-Z][-a-zA-Z0-9]*'
ConstraintDescription: ClusterBaseName - must be a valid Allowed Pattern
KeyName:
Description: Name of an existing EC2 KeyPair to enable SSH access to the instances. Linked to AWS Parameter
Type: AWS::EC2::KeyPair::KeyName
ConstraintDescription: must be the name of an existing EC2 KeyPair.
SgIngressSshCidr:
Description: The IP address range that can be used to communicate to the EC2 instances
Type: String
MinLength: '9'
MaxLength: '18'
Default: 0.0.0.0/0
AllowedPattern: (\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/(\d{1,2})
ConstraintDescription: must be a valid IP CIDR range of the form x.x.x.x/x.
MyInstanceType:
Description: Enter t2.micro, t2.small, t2.medium, t3.micro, t3.small, t3.medium. Default is t2.micro.
Type: String
Default: t3.medium
AllowedValues:
- t2.micro
- t2.small
- t2.medium
- t3.micro
- t3.small
- t3.medium
LatestAmiId:
Description: (DO NOT CHANGE)
Type: 'AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>'
Default: '/aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2'
AllowedValues:
- /aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2
TargetRegion:
Type: String
Default: ap-northeast-2
AvailabilityZone1:
Type: String
Default: ap-northeast-2a
AvailabilityZone2:
Type: String
Default: ap-northeast-2c
VpcBlock:
Type: String
Default: 192.168.0.0/16
PublicSubnet1Block:
Type: String
Default: 192.168.1.0/24
PublicSubnet2Block:
Type: String
Default: 192.168.2.0/24
PrivateSubnet1Block:
Type: String
Default: 192.168.3.0/24
PrivateSubnet2Block:
Type: String
Default: 192.168.4.0/24
Resources:
# VPC
EksVPC:
Type: AWS::EC2::VPC
Properties:
CidrBlock: !Ref VpcBlock
EnableDnsSupport: true
EnableDnsHostnames: true
Tags:
- Key: Name
Value: !Sub ${ClusterBaseName}-VPC
# PublicSubnets
PublicSubnet1:
Type: AWS::EC2::Subnet
Properties:
AvailabilityZone: !Ref AvailabilityZone1
CidrBlock: !Ref PublicSubnet1Block
VpcId: !Ref EksVPC
MapPublicIpOnLaunch: true
Tags:
- Key: Name
Value: !Sub ${ClusterBaseName}-PublicSubnet1
- Key: kubernetes.io/role/elb
Value: 1
PublicSubnet2:
Type: AWS::EC2::Subnet
Properties:
AvailabilityZone: !Ref AvailabilityZone2
CidrBlock: !Ref PublicSubnet2Block
VpcId: !Ref EksVPC
MapPublicIpOnLaunch: true
Tags:
- Key: Name
Value: !Sub ${ClusterBaseName}-PublicSubnet2
- Key: kubernetes.io/role/elb
Value: 1
InternetGateway:
Type: AWS::EC2::InternetGateway
VPCGatewayAttachment:
Type: AWS::EC2::VPCGatewayAttachment
Properties:
InternetGatewayId: !Ref InternetGateway
VpcId: !Ref EksVPC
PublicSubnetRouteTable:
Type: AWS::EC2::RouteTable
Properties:
VpcId: !Ref EksVPC
Tags:
- Key: Name
Value: !Sub ${ClusterBaseName}-PublicSubnetRouteTable
PublicSubnetRoute:
Type: AWS::EC2::Route
Properties:
RouteTableId: !Ref PublicSubnetRouteTable
DestinationCidrBlock: 0.0.0.0/0
GatewayId: !Ref InternetGateway
PublicSubnet1RouteTableAssociation:
Type: AWS::EC2::SubnetRouteTableAssociation
Properties:
SubnetId: !Ref PublicSubnet1
RouteTableId: !Ref PublicSubnetRouteTable
PublicSubnet2RouteTableAssociation:
Type: AWS::EC2::SubnetRouteTableAssociation
Properties:
SubnetId: !Ref PublicSubnet2
RouteTableId: !Ref PublicSubnetRouteTable
# PrivateSubnets
PrivateSubnet1:
Type: AWS::EC2::Subnet
Properties:
AvailabilityZone: !Ref AvailabilityZone1
CidrBlock: !Ref PrivateSubnet1Block
VpcId: !Ref EksVPC
Tags:
- Key: Name
Value: !Sub ${ClusterBaseName}-PrivateSubnet1
- Key: kubernetes.io/role/internal-elb
Value: 1
PrivateSubnet2:
Type: AWS::EC2::Subnet
Properties:
AvailabilityZone: !Ref AvailabilityZone2
CidrBlock: !Ref PrivateSubnet2Block
VpcId: !Ref EksVPC
Tags:
- Key: Name
Value: !Sub ${ClusterBaseName}-PrivateSubnet2
- Key: kubernetes.io/role/internal-elb
Value: 1
PrivateSubnetRouteTable:
Type: AWS::EC2::RouteTable
Properties:
VpcId: !Ref EksVPC
Tags:
- Key: Name
Value: !Sub ${ClusterBaseName}-PrivateSubnetRouteTable
PrivateSubnet1RouteTableAssociation:
Type: AWS::EC2::SubnetRouteTableAssociation
Properties:
SubnetId: !Ref PrivateSubnet1
RouteTableId: !Ref PrivateSubnetRouteTable
PrivateSubnet2RouteTableAssociation:
Type: AWS::EC2::SubnetRouteTableAssociation
Properties:
SubnetId: !Ref PrivateSubnet2
RouteTableId: !Ref PrivateSubnetRouteTable
# EKSCTL-Host
EKSEC2SG:
Type: AWS::EC2::SecurityGroup
Properties:
GroupDescription: eksctl-host Security Group
VpcId: !Ref EksVPC
Tags:
- Key: Name
Value: !Sub ${ClusterBaseName}-HOST-SG
SecurityGroupIngress:
- IpProtocol: '-1'
#FromPort: '22'
#ToPort: '22'
CidrIp: !Ref SgIngressSshCidr
EKSEC2:
Type: AWS::EC2::Instance
Properties:
InstanceType: !Ref MyInstanceType
ImageId: !Ref LatestAmiId
KeyName: !Ref KeyName
Tags:
- Key: Name
Value: !Sub ${ClusterBaseName}-host
NetworkInterfaces:
- DeviceIndex: 0
SubnetId: !Ref PublicSubnet1
GroupSet:
- !Ref EKSEC2SG
AssociatePublicIpAddress: true
PrivateIpAddress: 192.168.1.100
BlockDeviceMappings:
- DeviceName: /dev/xvda
Ebs:
VolumeType: gp3
VolumeSize: 20
DeleteOnTermination: true
UserData:
Fn::Base64:
!Sub |
#!/bin/bash
hostnamectl --static set-hostname "${ClusterBaseName}-host"
# Config convenience
echo 'alias vi=vim' >> /etc/profile
echo "sudo su -" >> /home/ec2-user/.bashrc
# Change Timezone
sed -i "s/UTC/Asia\/Seoul/g" /etc/sysconfig/clock
ln -sf /usr/share/zoneinfo/Asia/Seoul /etc/localtime
# Install Packages
cd /root
yum -y install tree jq git htop lynx
# Install kubectl & helm
#curl -O https://s3.us-west-2.amazonaws.com/amazon-eks/1.26.2/2023-03-17/bin/linux/amd64/kubectl
curl -O https://s3.us-west-2.amazonaws.com/amazon-eks/1.25.7/2023-03-17/bin/linux/amd64/kubectl
install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
curl -s https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash
# Install eksctl
curl --silent --location "https://github.com/weaveworks/eksctl/releases/latest/download/eksctl_$(uname -s)_amd64.tar.gz" | tar xz -C /tmp
mv /tmp/eksctl /usr/local/bin
# Install aws cli v2
curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
unzip awscliv2.zip >/dev/null 2>&1
sudo ./aws/install
complete -C '/usr/local/bin/aws_completer' aws
echo 'export AWS_PAGER=""' >>/etc/profile
export AWS_DEFAULT_REGION=${AWS::Region}
echo "export AWS_DEFAULT_REGION=$AWS_DEFAULT_REGION" >> /etc/profile
# Install YAML Highlighter
wget https://github.com/andreazorzetto/yh/releases/download/v0.4.0/yh-linux-amd64.zip
unzip yh-linux-amd64.zip
mv yh /usr/local/bin/
# Install krew
curl -LO https://github.com/kubernetes-sigs/krew/releases/download/v0.4.3/krew-linux_amd64.tar.gz
tar zxvf krew-linux_amd64.tar.gz
./krew-linux_amd64 install krew
export PATH="$PATH:/root/.krew/bin"
echo 'export PATH="$PATH:/root/.krew/bin"' >> /etc/profile
# Install kube-ps1
echo 'source <(kubectl completion bash)' >> /etc/profile
echo 'alias k=kubectl' >> /etc/profile
echo 'complete -F __start_kubectl k' >> /etc/profile
git clone https://github.com/jonmosco/kube-ps1.git /root/kube-ps1
cat <<"EOT" >> /root/.bash_profile
source /root/kube-ps1/kube-ps1.sh
KUBE_PS1_SYMBOL_ENABLE=false
function get_cluster_short() {
echo "$1" | cut -d . -f1
}
KUBE_PS1_CLUSTER_FUNCTION=get_cluster_short
KUBE_PS1_SUFFIX=') '
PS1='$(kube_ps1)'$PS1
EOT
# Install krew plugin
kubectl krew install ctx ns get-all # ktop df-pv mtail tree
# Install Docker
amazon-linux-extras install docker -y
systemctl start docker && systemctl enable docker
# CLUSTER_NAME
export CLUSTER_NAME=${ClusterBaseName}
echo "export CLUSTER_NAME=$CLUSTER_NAME" >> /etc/profile
# Create SSH Keypair
ssh-keygen -t rsa -N "" -f /root/.ssh/id_rsa
Outputs:
eksctlhost:
Value: !GetAtt EKSEC2.PublicIp
5)
테라폼 등 사용
- AWS나 Google , Azure등 다양한 CSP 서비스에서 사용 가능하다.
https://brunch.co.kr/@topasvga/2752
1
2/3 인원은 AWS를 기본적으로 다루어 봤다.
2
네트워크에 대해서는 잘 모른다. EIP와 서버 1대 만드는건 안다.
그러나, NAT, ELB는 잘 모른다.
3
"동영상 녹화자료를 봐야 따라할수 있을거 같다" 가 대부분이다.
앞으로 Zoom 녹화자료를 제공해야 겠다.
타이머
https://vclock.kr/timer/#countdown=00:10:00&enabled=0&seconds=0&sound=xylophone&loop=1
감사합니다.