All Questions
Tagged with amazon-vpc subnet
38
questions
0
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answers
219
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AWS: Ping between multiple namespaces in seperated EC2 Instance
I am encountering an issue where I am unable to receive a response when attempting to ping from a namespace located within a public EC2 instance to a private one. To better illustrate my situation, I ...
- 101
0
votes
1
answer
536
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Creating Subnet IP address : IPv4 block sizes must be between a /16 netmask and /28 netmask
I'm new to AWS and I'm looking to create a subnet. Whenever I try the defaults subnets under I get either the error message "IPv4 block sizes must be between a /16 netmask and /28 netmask." ...
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votes
2
answers
2k
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Selecting subnets for a Service in Fargate
As we can see in the picture above, I can select as many subnets as I want. Does it mean, the tasks in the service are created across these two subnets?
Suppose I have one task running, in which ...
- 123
0
votes
1
answer
64
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How to configure VPC and subnet for EC2 Database accessible privately
I have an EC2 Postgres Database (not standard AWS RDS, but based on my own configured AMI)
I have a load balancer, auto scaling group with 4 max servers in each AZ (us-west-2)
My load balancer is ...
- 111
1
vote
0
answers
272
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Network latency & Performance for inter subnet traffic in a AZ
My current local DC deployment has 2 subnets inside a datacenter where data is injected to the instances on a subnet A and then the instance is migrated to subnet B to serve traffic
We need to migrate ...
- 111
0
votes
2
answers
186
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CIDR ipv4 allocation to subnet
I have my VPC configured with 10.0.0.0/16 CIDR. I want to create around 7-10 subnets in this VPC.
On my calculation, I have decided to have 8 subnets where each subnet can host 8192 resources (8192*8=...
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1k
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Can't connect to a public accessible AWS RDS
I was running a serverless web application on a lambda inside a VPC, and connecting to a Aurora-MySQL RDS instance, with inbound rules to allow traffic from the security group of the lambda
The ...
- 135
0
votes
1
answer
313
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What is the VPC accepted address and why [duplicate]
i am trying to create a vpc but the ip i am providing is not accepted which is 192.168.1.1/16 but aws says i can use the following range if i set to 192.168.0.0/16 it works , i guess to an extent ...
- 1
0
votes
1
answer
6k
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Elastic beanstalk deployment in private subnet of the VPC is failing with following error when public subnet ACL inbound is deny all
TLD: Error, when the public subnet is inbound, is deny all.
The EC2 instances failed to communicate with AWS Elastic Beanstalk,
either because of configuration problems with the VPC or a failed EC2 ...
- 101
-2
votes
1
answer
373
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What if my public address is same as one of the IP address in my AWS VPC CIDR Block? [closed]
My public IP address (of my personal computer) from which I access the internet ranges from 112.110.x.x. For experiment, I created a VPC in AWS and chose the CIDR block as 112.110.0.0/16. In the route ...
1
vote
3
answers
11k
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EC2 unable to ping google.com
We created new VPC that has four subnets, two private and two public.
Private and public will be Mumbai A Mumbai B region.
When I ping google.com from public Mumbai A it is not working. When I ping ...
- 111
9
votes
2
answers
7k
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How to pick AWS CIDR within the CIDR ranges of VPC?
When i try to add a new subnet in my VPC I get this message:
172.22.128.0/24 CIDR is not within the CIDR ranges of VPC.
My current VPC CIDR is 172.22.130.0/28
Any help?
- 91
1
vote
1
answer
1k
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AWS Security group for restricting inbound traffic from private subnet
I have a load balancer with public IP, which delegates calls to two EC2 web servers on a private subnet in AWS VPC. For redundancy reasons, each on a separate private subnet. Let them be denoted as A1,...
- 121
3
votes
1
answer
635
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What is a good subnet strategy for AWS VPC? [closed]
I currently have each VPC per cluster (stg, prd, tst, misc) and the standard clusters (stg, prd) have these subnets:
elb: for public elb(s) that will received direct public traffic
elb-int: for ...
- 131
3
votes
1
answer
2k
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Export my whole AWS architecture into file?
In AWS, I have a VPC with many components inside, including subnets, security groups, gateways, load balancers, target groups, many instances, and others.
Is there any ways to export my whole ...
- 133