aws(学习笔记第六课) AWS的虚拟私有，共有子网以及ACL,定义公网碉堡主机子网以及varnish反向代理

aws(学习笔记第六课)

• AWS的虚拟私有，共有子网以及ACL，定义公网碉堡主机子网以及varnish反向代理

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学习内容：

• AWS的虚拟私有，共有子网以及ACL
• 定义公网碉堡主机子网，私有子网和共有子网以及varnish反向代理

1. AWS的虚拟私有，共有子网以及ACL

1. AWS的虚拟私有子网，共有云以及ACL
   • AWS的虚拟私有子网
     用户可以在AWS上定义自己的私有子网，比如数据库，应用程序和apache的server，可以在私有网络上构建，之后通过共有网络，进行访问，向外提供服务。其实和C++的面向对象中，private的变量和方法，一定不要定义成public的，对终端用户公开，如出一辙。能在私有云中定义，不需要公开的服务，都要定义要私有云中。
   • AWS的虚拟共有云
     与上面的AWS私有云对应的就是共有云，共有云最终提供给用户服务，对于终端客户开发网络端口，共有网络的服务承上启下，既可以提供服务给用公户，同时能够访问私有子网的应用服务，数据库服务等其他服务。
     
   • ACL(network access control list)和SecuityGroup的区别
     • 应用的对象不同
       ACL的设定对象是Subnet，对于Subnet设定网络访问规则。注意，默认的场合，同一个VPC之间的网络都是相通的，但是如果定义了ACL，那么就会根据ACL的限制，没有允许的网络是不通的
       SecurityGroup的设定对象是ec2 server等服务，而不是Subnet。
     • 有状态（state）和无状态(stateless)
       • ACL没有状态，允许入站的包，如果没有符合出站规则，那么也不能出站。
       • SecurityGroup有状态，允许入站的包，那么都会出站允许。

2. 定义公网碉堡主机子网，私有子网和共有子网

1. 整体网络拓扑(这里右边的共有子网使用varnish进行反向代理，公开私有子网的apache server)
   

2. 逐步创建VPC以及其他服务

   • 创建VPC和IGW (Internet GateWay)

     		"VPC": {"Type": "AWS::EC2::VPC","Properties": {"CidrBlock": "10.0.0.0/16","EnableDnsHostnames": "true"}},"InternetGateway": {"Type": "AWS::EC2::InternetGateway","Properties": {}},"VPCGatewayAttachment": {"Type": "AWS::EC2::VPCGatewayAttachment","Properties": {"VpcId": {"Ref": "VPC"},"InternetGatewayId": {"Ref": "InternetGateway"}}},
     

   • 创建堡垒机子网(共有子网) Bastion
CidrBlock是10.0.1.0/24
RoutePublicSSHBastionToInternet定义，堡垒机子网能够访问internet。
     NetworkAclEntryInPublicSSHBastionSSH，定义internet的其他主机能够访问使用22端口访问（入站规则，egress = true）。
     NetworkAclEntryInPublicSSHBastionEphemeralPorts，定义VPC主机能够访问使用随机端口访问（入站规则，egress = true）。
     NetworkAclEntryOutPublicSSHBastionSSH，定义堡垒子网的主机能够通过22端口访问其他主机（出站规则，egress = false）。
     NetworkAclEntryOutPublicSSHBastionEphemeralPorts，定义internet的主机，能够访问使用随机端口访问（出站规则，egress = false）。

     		"SubnetPublicSSHBastion": {"Type": "AWS::EC2::Subnet","Properties": {"AvailabilityZone": {"Fn::Select": ["0", {"Fn::GetAZs": ""}]},"CidrBlock": "10.0.1.0/24","VpcId": {"Ref": "VPC"}}},"RouteTablePublicSSHBastion": {"Type": "AWS::EC2::RouteTable","Properties": {"VpcId": {"Ref": "VPC"}}},"RouteTableAssociationPublicSSHBastion": {"Type": "AWS::EC2::SubnetRouteTableAssociation","Properties": {"SubnetId": {"Ref": "SubnetPublicSSHBastion"},"RouteTableId": {"Ref": "RouteTablePublicSSHBastion"}}},"RoutePublicSSHBastionToInternet": {"Type": "AWS::EC2::Route","Properties": {"RouteTableId": {"Ref": "RouteTablePublicSSHBastion"},"DestinationCidrBlock": "0.0.0.0/0","GatewayId": {"Ref": "InternetGateway"}},"DependsOn": "VPCGatewayAttachment"},"NetworkAclPublicSSHBastion": {"Type": "AWS::EC2::NetworkAcl","Properties": {"VpcId": {"Ref": "VPC"}}},"SubnetNetworkAclAssociationPublicSSHBastion": {"Type": "AWS::EC2::SubnetNetworkAclAssociation","Properties": {"SubnetId": {"Ref": "SubnetPublicSSHBastion"},"NetworkAclId": {"Ref": "NetworkAclPublicSSHBastion"}}},"NetworkAclEntryInPublicSSHBastionSSH": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicSSHBastion"},"RuleNumber": "100","Protocol": "6","PortRange": {"From": "22","To": "22"},"RuleAction": "allow","Egress": "false","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryInPublicSSHBastionEphemeralPorts": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicSSHBastion"},"RuleNumber": "200","Protocol": "6","PortRange": {"From": "1024","To": "65535"},"RuleAction": "allow","Egress": "false","CidrBlock": "10.0.0.0/16"}},"NetworkAclEntryOutPublicSSHBastionSSH": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicSSHBastion"},"RuleNumber": "100","Protocol": "6","PortRange": {"From": "22","To": "22"},"RuleAction": "allow","Egress": "true","CidrBlock": "10.0.0.0/16"}},"NetworkAclEntryOutPublicSSHBastionEphemeralPorts": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicSSHBastion"},"RuleNumber": "200","Protocol": "6","PortRange": {"From": "1024","To": "65535"},"RuleAction": "allow","Egress": "true","CidrBlock": "0.0.0.0/0"}},
     

   • 创建varnish子网(共有子网) varnish

     		"SubnetPublicVarnish": {"Type": "AWS::EC2::Subnet","Properties": {"AvailabilityZone": {"Fn::Select": ["0", {"Fn::GetAZs": ""}]},"CidrBlock": "10.0.2.0/24","VpcId": {"Ref": "VPC"}}},"RouteTablePublicVarnish": {"Type": "AWS::EC2::RouteTable","Properties": {"VpcId": {"Ref": "VPC"}}},"RouteTableAssociationPublicVarnish": {"Type": "AWS::EC2::SubnetRouteTableAssociation","Properties": {"SubnetId": {"Ref": "SubnetPublicVarnish"},"RouteTableId": {"Ref": "RouteTablePublicVarnish"}}},"RoutePublicVarnishToInternet": {"Type": "AWS::EC2::Route","Properties": {"RouteTableId": {"Ref": "RouteTablePublicVarnish"},"DestinationCidrBlock": "0.0.0.0/0","GatewayId": {"Ref": "InternetGateway"}},"DependsOn": "VPCGatewayAttachment"},"NetworkAclPublicVarnish": {"Type": "AWS::EC2::NetworkAcl","Properties": {"VpcId": {"Ref": "VPC"}}},"SubnetNetworkAclAssociationPublicVarnish": {"Type": "AWS::EC2::SubnetNetworkAclAssociation","Properties": {"SubnetId": {"Ref": "SubnetPublicVarnish"},"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"}}},"NetworkAclEntryInPublicVarnishSSH": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"},"RuleNumber": "100","Protocol": "6","PortRange": {"From": "22","To": "22"},"RuleAction": "allow","Egress": "false","CidrBlock": "10.0.1.0/24"}},"NetworkAclEntryInPublicVarnishHTTP": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"},"RuleNumber": "110","Protocol": "6","PortRange": {"From": "80","To": "80"},"RuleAction": "allow","Egress": "false","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryInPublicVarnishEphemeralPorts": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"},"RuleNumber": "200","Protocol": "6","PortRange": {"From": "1024","To": "65535"},"RuleAction": "allow","Egress": "false","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryOutPublicVarnishHTTP": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"},"RuleNumber": "100","Protocol": "6","PortRange": {"From": "80","To": "80"},"RuleAction": "allow","Egress": "true","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryOutPublicVarnishHTTPS": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"},"RuleNumber": "110","Protocol": "6","PortRange": {"From": "443","To": "443"},"RuleAction": "allow","Egress": "true","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryOutPublicVarnishEphemeralPorts": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"},"RuleNumber": "200","Protocol": "6","PortRange": {"From": "1024","To": "65535"},"RuleAction": "allow","Egress": "true","CidrBlock": "0.0.0.0/0"}},
     

   • 创建私有子网

     		"SubnetPrivateApache": {"Type": "AWS::EC2::Subnet","Properties": {"AvailabilityZone": {"Fn::Select": ["0", {"Fn::GetAZs": ""}]},"CidrBlock": "10.0.3.0/24","VpcId": {"Ref": "VPC"}}},"RouteTablePrivateApache": {"Type": "AWS::EC2::RouteTable","Properties": {"VpcId": {"Ref": "VPC"}}},"RouteTableAssociationPrivateApache": {"Type": "AWS::EC2::SubnetRouteTableAssociation","Properties": {"SubnetId": {"Ref": "SubnetPrivateApache"},"RouteTableId": {"Ref": "RouteTablePrivateApache"}}},"RoutePrivateApacheToInternet": {"Type": "AWS::EC2::Route","Properties": {"RouteTableId": {"Ref": "RouteTablePrivateApache"},"DestinationCidrBlock": "0.0.0.0/0","InstanceId": {"Ref": "NatServer"}}},"NetworkAclPrivateApache": {"Type": "AWS::EC2::NetworkAcl","Properties": {"VpcId": {"Ref": "VPC"}}},"SubnetNetworkAclAssociationPrivateApache": {"Type": "AWS::EC2::SubnetNetworkAclAssociation","Properties": {"SubnetId": {"Ref": "SubnetPrivateApache"},"NetworkAclId": {"Ref": "NetworkAclPrivateApache"}}},"NetworkAclEntryInPrivateApacheSSH": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPrivateApache"},"RuleNumber": "100","Protocol": "6","PortRange": {"From": "22","To": "22"},"RuleAction": "allow","Egress": "false","CidrBlock": "10.0.1.0/24"}},"NetworkAclEntryInPrivateApacheHTTP": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPrivateApache"},"RuleNumber": "110","Protocol": "6","PortRange": {"From": "80","To": "80"},"RuleAction": "allow","Egress": "false","CidrBlock": "10.0.2.0/24"}},"NetworkAclEntryInPrivateApacheEphemeralPorts": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPrivateApache"},"RuleNumber": "200","Protocol": "6","PortRange": {"From": "1024","To": "65535"},"RuleAction": "allow","Egress": "false","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryOutPrivateApacheHTTP": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPrivateApache"},"RuleNumber": "100","Protocol": "6","PortRange": {"From": "80","To": "80"},"RuleAction": "allow","Egress": "true","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryOutPrivateApacheHTTPS": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPrivateApache"},"RuleNumber": "110","Protocol": "6","PortRange": {"From": "443","To": "443"},"RuleAction": "allow","Egress": "true","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryOutPrivateApacheEphemeralPorts": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPrivateApache"},"RuleNumber": "200","Protocol": "6","PortRange": {"From": "1024","To": "65535"},"RuleAction": "allow","Egress": "true","CidrBlock": "10.0.0.0/16"}},
     

   • 创建整体的AWS的stack

     {"AWSTemplateFormatVersion": "2010-09-09","Description": "(VPC)","Parameters": {"KeyName": {"Description": "Key Pair name","Type": "AWS::EC2::KeyPair::KeyName","Default": "my-cli-key"}},"Mappings": {"EC2RegionMap": {"ap-northeast-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-03f584e50b2d32776", "AmazonLinuxNATAMIHVMEBSBacked64bit": "ami-03cf3903"},"ap-southeast-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-68d8e93a", "AmazonLinuxNATAMIHVMEBSBacked64bit": "ami-b49dace6"},"ap-southeast-2": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-fd9cecc7", "AmazonLinuxNATAMIHVMEBSBacked64bit": "ami-e7ee9edd"},"eu-central-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-a8221fb5", "AmazonLinuxNATAMIHVMEBSBacked64bit": "ami-46073a5b"},"eu-west-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-a10897d6", "AmazonLinuxNATAMIHVMEBSBacked64bit": "ami-6975eb1e"},"sa-east-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-b52890a8", "AmazonLinuxNATAMIHVMEBSBacked64bit": "ami-fbfa41e6"},"us-east-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-1ecae776", "AmazonLinuxNATAMIHVMEBSBacked64bit": "ami-303b1458"},"us-west-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-d114f295", "AmazonLinuxNATAMIHVMEBSBacked64bit": "ami-7da94839"},"us-west-2": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-e7527ed7", "AmazonLinuxNATAMIHVMEBSBacked64bit": "ami-69ae8259"}}},"Resources": {"SecurityGroup": {"Type": "AWS::EC2::SecurityGroup","Properties": {"GroupDescription": "My security group","VpcId": {"Ref": "VPC"}}},"SecurityGroupIngress": {"Type": "AWS::EC2::SecurityGroupIngress","Properties":{"IpProtocol": "-1","FromPort": "-1","ToPort": "-1","CidrIp": "0.0.0.0/0","GroupId": {"Ref": "SecurityGroup"}}},"SecurityGroupEgress": {"Type": "AWS::EC2::SecurityGroupEgress","Properties":{"IpProtocol": "-1","FromPort": "-1","ToPort": "-1","CidrIp": "0.0.0.0/0","GroupId": {"Ref": "SecurityGroup"}}},"VPC": {"Type": "AWS::EC2::VPC","Properties": {"CidrBlock": "10.0.0.0/16","EnableDnsHostnames": "true"}},"InternetGateway": {"Type": "AWS::EC2::InternetGateway","Properties": {}},"VPCGatewayAttachment": {"Type": "AWS::EC2::VPCGatewayAttachment","Properties": {"VpcId": {"Ref": "VPC"},"InternetGatewayId": {"Ref": "InternetGateway"}}},"SubnetPublicSSHBastion": {"Type": "AWS::EC2::Subnet","Properties": {"AvailabilityZone": {"Fn::Select": ["0", {"Fn::GetAZs": ""}]},"CidrBlock": "10.0.1.0/24","VpcId": {"Ref": "VPC"}}},"RouteTablePublicSSHBastion": {"Type": "AWS::EC2::RouteTable","Properties": {"VpcId": {"Ref": "VPC"}}},"RouteTableAssociationPublicSSHBastion": {"Type": "AWS::EC2::SubnetRouteTableAssociation","Properties": {"SubnetId": {"Ref": "SubnetPublicSSHBastion"},"RouteTableId": {"Ref": "RouteTablePublicSSHBastion"}}},"RoutePublicSSHBastionToInternet": {"Type": "AWS::EC2::Route","Properties": {"RouteTableId": {"Ref": "RouteTablePublicSSHBastion"},"DestinationCidrBlock": "0.0.0.0/0","GatewayId": {"Ref": "InternetGateway"}},"DependsOn": "VPCGatewayAttachment"},"NetworkAclPublicSSHBastion": {"Type": "AWS::EC2::NetworkAcl","Properties": {"VpcId": {"Ref": "VPC"}}},"SubnetNetworkAclAssociationPublicSSHBastion": {"Type": "AWS::EC2::SubnetNetworkAclAssociation","Properties": {"SubnetId": {"Ref": "SubnetPublicSSHBastion"},"NetworkAclId": {"Ref": "NetworkAclPublicSSHBastion"}}},"NetworkAclEntryInPublicSSHBastionSSH": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicSSHBastion"},"RuleNumber": "100","Protocol": "6","PortRange": {"From": "22","To": "22"},"RuleAction": "allow","Egress": "false","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryInPublicSSHBastionEphemeralPorts": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicSSHBastion"},"RuleNumber": "200","Protocol": "6","PortRange": {"From": "1024","To": "65535"},"RuleAction": "allow","Egress": "false","CidrBlock": "10.0.0.0/16"}},"NetworkAclEntryOutPublicSSHBastionSSH": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicSSHBastion"},"RuleNumber": "100","Protocol": "6","PortRange": {"From": "22","To": "22"},"RuleAction": "allow","Egress": "true","CidrBlock": "10.0.0.0/16"}},"NetworkAclEntryOutPublicSSHBastionEphemeralPorts": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicSSHBastion"},"RuleNumber": "200","Protocol": "6","PortRange": {"From": "1024","To": "65535"},"RuleAction": "allow","Egress": "true","CidrBlock": "0.0.0.0/0"}},"SubnetPublicVarnish": {"Type": "AWS::EC2::Subnet","Properties": {"AvailabilityZone": {"Fn::Select": ["0", {"Fn::GetAZs": ""}]},"CidrBlock": "10.0.2.0/24","VpcId": {"Ref": "VPC"}}},"RouteTablePublicVarnish": {"Type": "AWS::EC2::RouteTable","Properties": {"VpcId": {"Ref": "VPC"}}},"RouteTableAssociationPublicVarnish": {"Type": "AWS::EC2::SubnetRouteTableAssociation","Properties": {"SubnetId": {"Ref": "SubnetPublicVarnish"},"RouteTableId": {"Ref": "RouteTablePublicVarnish"}}},"RoutePublicVarnishToInternet": {"Type": "AWS::EC2::Route","Properties": {"RouteTableId": {"Ref": "RouteTablePublicVarnish"},"DestinationCidrBlock": "0.0.0.0/0","GatewayId": {"Ref": "InternetGateway"}},"DependsOn": "VPCGatewayAttachment"},"NetworkAclPublicVarnish": {"Type": "AWS::EC2::NetworkAcl","Properties": {"VpcId": {"Ref": "VPC"}}},"SubnetNetworkAclAssociationPublicVarnish": {"Type": "AWS::EC2::SubnetNetworkAclAssociation","Properties": {"SubnetId": {"Ref": "SubnetPublicVarnish"},"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"}}},"NetworkAclEntryInPublicVarnishSSH": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"},"RuleNumber": "100","Protocol": "6","PortRange": {"From": "22","To": "22"},"RuleAction": "allow","Egress": "false","CidrBlock": "10.0.1.0/24"}},"NetworkAclEntryInPublicVarnishHTTP": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"},"RuleNumber": "110","Protocol": "6","PortRange": {"From": "80","To": "80"},"RuleAction": "allow","Egress": "false","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryInPublicVarnishEphemeralPorts": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"},"RuleNumber": "200","Protocol": "6","PortRange": {"From": "1024","To": "65535"},"RuleAction": "allow","Egress": "false","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryOutPublicVarnishHTTP": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"},"RuleNumber": "100","Protocol": "6","PortRange": {"From": "80","To": "80"},"RuleAction": "allow","Egress": "true","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryOutPublicVarnishHTTPS": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"},"RuleNumber": "110","Protocol": "6","PortRange": {"From": "443","To": "443"},"RuleAction": "allow","Egress": "true","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryOutPublicVarnishEphemeralPorts": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPublicVarnish"},"RuleNumber": "200","Protocol": "6","PortRange": {"From": "1024","To": "65535"},"RuleAction": "allow","Egress": "true","CidrBlock": "0.0.0.0/0"}},"SubnetPrivateApache": {"Type": "AWS::EC2::Subnet","Properties": {"AvailabilityZone": {"Fn::Select": ["0", {"Fn::GetAZs": ""}]},"CidrBlock": "10.0.3.0/24","VpcId": {"Ref": "VPC"}}},"RouteTablePrivateApache": {"Type": "AWS::EC2::RouteTable","Properties": {"VpcId": {"Ref": "VPC"}}},"RouteTableAssociationPrivateApache": {"Type": "AWS::EC2::SubnetRouteTableAssociation","Properties": {"SubnetId": {"Ref": "SubnetPrivateApache"},"RouteTableId": {"Ref": "RouteTablePrivateApache"}}},"NetworkAclPrivateApache": {"Type": "AWS::EC2::NetworkAcl","Properties": {"VpcId": {"Ref": "VPC"}}},"SubnetNetworkAclAssociationPrivateApache": {"Type": "AWS::EC2::SubnetNetworkAclAssociation","Properties": {"SubnetId": {"Ref": "SubnetPrivateApache"},"NetworkAclId": {"Ref": "NetworkAclPrivateApache"}}},"NetworkAclEntryInPrivateApacheSSH": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPrivateApache"},"RuleNumber": "100","Protocol": "6","PortRange": {"From": "22","To": "22"},"RuleAction": "allow","Egress": "false","CidrBlock": "10.0.1.0/24"}},"NetworkAclEntryInPrivateApacheHTTP": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPrivateApache"},"RuleNumber": "110","Protocol": "6","PortRange": {"From": "80","To": "80"},"RuleAction": "allow","Egress": "false","CidrBlock": "10.0.2.0/24"}},"NetworkAclEntryInPrivateApacheEphemeralPorts": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPrivateApache"},"RuleNumber": "200","Protocol": "6","PortRange": {"From": "1024","To": "65535"},"RuleAction": "allow","Egress": "false","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryOutPrivateApacheHTTP": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPrivateApache"},"RuleNumber": "100","Protocol": "6","PortRange": {"From": "80","To": "80"},"RuleAction": "allow","Egress": "true","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryOutPrivateApacheHTTPS": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPrivateApache"},"RuleNumber": "110","Protocol": "6","PortRange": {"From": "443","To": "443"},"RuleAction": "allow","Egress": "true","CidrBlock": "0.0.0.0/0"}},"NetworkAclEntryOutPrivateApacheEphemeralPorts": {"Type": "AWS::EC2::NetworkAclEntry","Properties": {"NetworkAclId": {"Ref": "NetworkAclPrivateApache"},"RuleNumber": "200","Protocol": "6","PortRange": {"From": "1024","To": "65535"},"RuleAction": "allow","Egress": "true","CidrBlock": "10.0.0.0/16"}},"BastionHost": {"Type": "AWS::EC2::Instance","Properties": {"ImageId": {"Fn::FindInMap": ["EC2RegionMap", {"Ref": "AWS::Region"}, "AmazonLinuxAMIHVMEBSBacked64bit"]},"InstanceType": "t2.micro","KeyName": {"Ref": "KeyName"},"NetworkInterfaces": [{"AssociatePublicIpAddress": "true","DeleteOnTermination": "true","SubnetId": {"Ref": "SubnetPublicSSHBastion"},"DeviceIndex": "0","GroupSet": [{"Ref": "SecurityGroup"}]}]},"DependsOn": "VPCGatewayAttachment"},"VarnishServer": {"Type": "AWS::EC2::Instance","Properties": {"ImageId": {"Fn::FindInMap": ["EC2RegionMap", {"Ref": "AWS::Region"}, "AmazonLinuxAMIHVMEBSBacked64bit"]},"InstanceType": "t2.micro","KeyName": {"Ref": "KeyName"},"NetworkInterfaces": [{"AssociatePublicIpAddress": "true","DeleteOnTermination": "true","SubnetId": {"Ref": "SubnetPublicVarnish"},"DeviceIndex": "0","GroupSet": [{"Ref": "SecurityGroup"}]}],"UserData": {"Fn::Base64": {"Fn::Join": ["", ["#!/bin/bash -ex\n","yum -y install varnish-3.0.7\n","cat > /etc/varnish/default.vcl << EOF\n","backend default {\n","  .host = \"", {"Fn::GetAtt": ["ApacheServer", "PrivateIp"]} ,"\";\n","  .port = \"80\";\n","}\n","EOF\n","sed -i.bak \"s/^VARNISH_LISTEN_PORT=.*/VARNISH_LISTEN_PORT=80/\" /etc/sysconfig/varnish\n","service varnish start\n","/opt/aws/bin/cfn-signal --stack ", {"Ref": "AWS::StackName"}, " --resource VarnishServer --region ", {"Ref": "AWS::Region"}, "\n"]]}}},"DependsOn": "VPCGatewayAttachment"},"ApacheServer": {"Type": "AWS::EC2::Instance","Properties": {"ImageId": {"Fn::FindInMap": ["EC2RegionMap", {"Ref": "AWS::Region"}, "AmazonLinuxAMIHVMEBSBacked64bit"]},"InstanceType": "t2.micro","KeyName": {"Ref": "KeyName"},"NetworkInterfaces": [{"AssociatePublicIpAddress": "false","DeleteOnTermination": "true","SubnetId": {"Ref": "SubnetPrivateApache"},"DeviceIndex": "0","GroupSet": [{"Ref": "SecurityGroup"}]}],"UserData": {"Fn::Base64": {"Fn::Join": ["", ["#!/bin/bash -ex\n","yum -y install httpd\n","service httpd start\n","/opt/aws/bin/cfn-signal --stack ", {"Ref": "AWS::StackName"}, " --resource ApacheServer --region ", {"Ref": "AWS::Region"}, "\n"]]}}}}},"Outputs": {"BastionHostPublicName": {"Value": {"Fn::GetAtt": ["BastionHost", "PublicDnsName"]},"Description": "connect via SSH as user ec2-user"},"VarnishServerPublicName": {"Value": {"Fn::GetAtt": ["VarnishServer", "PublicDnsName"]},"Description": "handles HTTP requests"},"VarnishServerPrivateIp": {"Value": {"Fn::GetAtt": ["VarnishServer", "PrivateIp"]},"Description": "connect via SSH from bastion host"},"ApacheServerPrivateIp": {"Value": {"Fn::GetAtt": ["ApacheServer", "PrivateIp"]},"Description": "connect via SSH from bastion host"}}
     }
     

   • 测试创建结果

     • 执行结果
       

     • 一点注意
       不要认为连接ec2 server使用的用户就是ec2-user，有的AMI使用的是ubuntu用户
       最好在ec2 server的连接画面进行确认。

     • 通过堡垒机SSH访问apache server(私有子网)
       ssh -A [e-mail]通过AgentForward模式进行访问堡垒机。
       ssh 10.0.3.198直接就可以访问私有子网的apache主机。

       Dell@DESKTOP-DHMQMJG MINGW64 /
       $ eval `ssh-agent`
       Agent pid 2195Dell@DESKTOP-DHMQMJG MINGW64 /
       $ ssh-add ~/.ssh/my-cli-key.pem
       Identity added: /c/Users/Dell/.ssh/my-cli-key.pem (/c/Users/Dell/.ssh/my-cli-key.pem)Dell@DESKTOP-DHMQMJG MINGW64 /
       $ ssh -A [e-mail]
       Welcome to Ubuntu 24.04.1 LTS (GNU/Linux 6.8.0-1016-aws x86_64)ubuntu@ip-10-0-1-169:~$ ssh 10.0.3.198
       Welcome to Ubuntu 24.04.1 LTS (GNU/Linux 6.8.0-1016-aws x86_64)
       

     • 通过堡varnish反向代理HTTP访问apache server(私有子网)

       ubuntu@ip-10-0-1-169:~$ ssh ec2-52-195-182-135.ap-northeast-1.compute.amazonaws.com
       The authenticity of host 'ec2-52-195-182-135.ap-northeast-1.compute.amazonaws.com (10.0.2.170)' can't be established.
       ED25519 key fingerprint is SHA256:r4A9nVkEUhL1ovBuKc90hnYZUNilz/xxFKlPYj0kyOQ.