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Shard Networking | ||||
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Shard Id | Base CIDR | Shard Management VPC CIDR | Availability Zone A Subnet | Availability Zone B Subnet |
1 – Development | 10.249.0.0/16 | 10.249.0.0/21 | 10.249.0.0/22 (1019 hosts) | 10.249.4.0/22 |
2 – Gen Pop | 10.248.0.0/16 | 10.248.0.0/21 | 10.248.0.0/22 | 10.248.4.0/22 |
3 – GDPR | 10.247.0.0/16 | 10.247.0.0/21 | 10.247.0.0/22 | 10.247.4.0/22 |
4 - Canada? | 10.246.0.0/16 | 10.246.0.0/21 | 10.246.0.0/22 | 10.246.4.0/22 |
5 - GovCloud | 10.245.0.0/16 | 10.245.0.0/21 | 10.245.0.0/22 | 10.245.4.0/22 |
00000000 00000000 00001000 00000000
The benefit of this approach allows you to tell that the server is in a Shard Management VPC and which shard it’s a member of just based on the server’s IP address. An address that falls within 10.249.0.0-10.249.7.255 will always be a Shard Management VPC and the range of the third number will tell you which Shard Service VPC it belongs to, i.e 10.249.8.0 belongs to Shard 1 North Virginia.
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Geography | AWS Region | Service VPC Id | Service VPC CIDR | Availability Zone A Subnet | Availability Zone B Subnet |
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1 – Dev/QA/Train | N. Virginia (us-east-1) | 1 | 10.249.8.0/21 | 10.249.8.0/22 (1019 hosts) | 10.249.12.0/22 |
Mumbai (ap-south-1) | 2 | 10.249.16.0/21 | 10.249.16.0/22 | 10.249.20.0/22 | |
2 - General Population | N. Virginia (us-east-1) | 1 | 10.248.8.0/21 | 10.248.8.0/22 (1019 hosts) | 10.248.12.0/22 |
Singapore (ap-southeast-1) | 2 | 10.248.16.0/21 | 10.248.16.0/22 | 10.248.20.0/22 | |
N California (us-west-1) | 3 | 10.248.24.0/21 | 10.248.24.0/22 | 10.248.28.0/22 | |
Ohio (us-east-2) | 4 | 10.248.32.0/21 | 10.248.32.0/22 | 10.248.36.0/22 | |
3 - GDPR | Paris (eu-west-3) | 1 | 10.247.8.0/21 | 10.247.8.0/22 (1019 hosts) | 10.247.12.0/22 |
4 - Canada | N. Virginia (us-east-1) | 1 | 10.246.8.0/21 | 10.246.8.0/22 (1019 hosts) | 10.246.12.0/22 |
5 - XYZ |
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