Network Connection Failure

Question

Hi there,

I have some linux instances running on AWS but sometimes when we try to connect to the instance its say "Network connection failure" and same when I check on AWS EC2 console its says 1/2 status check failed. 
and after rebooting the instance sometimes its works perfectly and sometimes it got completely disconnected and after this we have to recover the data from EBS volumes and required to create new instance. But the previous instance was not in work. 
Please provide me a solution, why it is happening?

Answer

There are several possible reasons why you are experiencing network connection issues with your Linux instances on AWS:

* Security Group Rules: Check the security group rules of your instance and ensure that the ports required for your application are open for incoming traffic.
* Network Configuration: Check the network configuration of your instance and ensure that the IP address, subnet mask, and gateway are correctly configured.
* Route Tables: Verify the route tables to make sure that they are correctly configured and point to the correct Internet Gateway or NAT Gateway.
* DNS Resolution: Check the DNS resolution of your instance and ensure that it can resolve hostnames to IP addresses.
* Resource Exhaustion: Verify that your instance has enough resources, such as CPU, memory, and disk space.
* Instance Health: Check the system log and CloudWatch Logs to identify any potential issues with the instance's health.
* Instance Type: Consider upgrading the instance type to a larger one if the current instance type is unable to handle the workload.

Network Connection Failure

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