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' Mappings : AWSInstanceType2Arch : t3.medium : Arch : HVM64 t3.micro : Arch : HVM64 t3.small : Arch : HVM64 AWSRegionArch2AMI : ap-northeast-1 : HVM64 : ami-0a1c2ec61571737db us-east-1 : HVM64 : ami-0a887e401f7654935 us-west-2 : HVM64 : ami-0e8c04af2729ff1bb Outputs : AZ01 : Description : Availability Zone of the Client EC2 instance 01 Value : !Join - ' ' - !GetAtt ' ClientInstance.AvailabilityZone' AZ02 : Description : Availability Zone of the Client EC2 instance 02 Value : !Join - ' ' - !GetAtt ' ClientInstance2.AvailabilityZone' IP01 : Description : Client EC2 IPaddress 01 Value : !Join - ' ' - !GetAtt ' ClientInstance.PublicIp' IP02 : Description : Client EC2 IPaddress 02 Value : !Join - ' ' - !GetAtt ' ClientInstance2.PublicIp' Parameters : InstanceType : AllowedValues : - t3.micro - t3.small - t3.medium ConstraintDescription : must be a valid EC2 instance type. cloud-init: tool for boot Linux in cloud environment, many common tasks (set hostname etc.AWSTemplateFormatVersion : ' ' Description : ' For making 2 of Amazon Linux (EC2) on a VPC.
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#Install tcpdump amazon linux ami install
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Warm / hot attachment may require manual setup.Launching with multiple interfaces - automatic configure host (route table, etc.).Can move from one instance to another (same AZ & VPC).Can detach secondary interface from instance.Can attach to instance when running (hot), stopped (warm) or at launching (code).Network interface (Elastic) - logical NIC, manageable.Amazon DNS Server - resolves IPv4 hostname to address.Bring Your Own IP - available at certain region.
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Elastic IP Addresses (IPv4) - reserved IP, can allocate (attach & release), small charge if not used, support reverse DNS.Public IPv4 & hostname (also based on IP).IPv4 + optional IPv6 (IPv6 reachable form Internet).