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[英]How to assign a specific private ip (pre-determined ip base on my CIDR and subnet) when create ec2 using Cloudformation script
[英]How to create a NAT Gateway in CDK and then add route to a private subnet pointing CIDR to it?
我找到了一些關於將 NAT 實例設置為私有 su.net 的例子。 我不想讓 AWS 在每個 AZ 中創建 NAT 網關,因為我不會擁有多 AZ。
我可能誤解了你的問題。 我按照以下(Python)的方式進行工作。 使用ec2.Vpc.from_lookup
獲取 vpc。
allocation_id = 'eipalloc-xxx1'
nat_gateway = ec2.CfnNatGateway(
self,
'My-Nat-Gateway',
allocation_id = allocation_id,
subnet_id = 'subnet-1234' # the ID of the first default subnet in the VPC, in my case it was ok not to do it for all subnets
)
ip_range_index_offset = 3
for i, az in enumerate(vpc.availability_zones):
sub_net = ec2.PrivateSubnet(
self,
id = 'private-subnet-' + str(i),
availability_zone = az,
cidr_block = '123.12.'+ str(16 * (i+ip_range_index_offset)) +'.0/20', # there is likely a better way to do this
vpc_id = vpc.vpc_id,
)
route_table_entry = ec2.CfnRoute(
self,
id = 'route-table-entry' + str(i),
route_table_id = sub_net.route_table.route_table_id,
destination_cidr_block = '0.0.0.0/0',
nat_gateway_id = nat_gateway.ref
)
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