![]() Last and not the least, often high CPU usage on the EC2 instance can make the server unreachable too. Additionally, Access Control lists restricting location wise access also create problems with EC2 connection. Or, if the Linux instance has a custom SSH port, that also should be open in the firewall. Yet another reason that make EC2 instance not reachable can be firewall restrictions.Ī windows instance need port 3389 open in the security group of the EC2 instance. The right way would be to configure a network interface and then attach it to the instance.Īgain, when EC2 uses VPN, it should be properly allowed in the network. As per AWS policy, Amazon EC2 ignores static IP address as such. Likewise a common network setting error with EC2 happens when someone sets a static IP address. As a result, it can cause the instance to be inaccessible. When someone makes a networking change, the instance can be dropped off from the network. Similarly, network configuration errors also contribute to a major share of EC2 connectivity errors. As a result, an attempt to connect to the EC2 instance ends up in Not reachable error. In Linux instances, the boot script goes faulty and make the entire system non-functional. In many cases, the operating system experiencing a fatal corruption in the system files, registry corruption, etc. We’ll now check each of the reason in detail.Ī very common reason for EC2 instance to become not reachable would be the booting errors on the server. Basically, this happens on both Linux or Windows instances. Now, its time to see the typical reasons for EC2 unreachable error. An easy way would be to do a ping check on the public IP address or hostname of EC2 instance.Īnd, when the instance is not reachable, it shows up as : :~$ ping Today, we’ll see the various reasons that can make EC2 instance not reachable and how our Cloud Experts fix it.įirstly, lets check on how EC2 unreachable error look like. That’s why, we often get requests from our AWS customers to fix EC2 access problems as part of our Cloud Management Services. However, connectivity problems can often make EC2 instance not reachable.Īnd, it can be really frustrating when you are doing a last minute website edit. You could have a script running on the Minecraft server that monitors the game and, after a period of inactivity, simply calls the operating system to perform a Shutdown.Cloud servers like EC2 make web solutions easy and cheap. ![]() The library you referenced might be able to assist with finding a way to do this. Stopping the server after a period of non-use is a different matter. They will not provide the secret, so the server will not be started. The purpose of the secret is to avoid the server from starting if an unauthorized person (or a bot) happens to hit the API Gateway endpoint. Here is a tutorial that shows many of these concepts: Build an API Gateway API with Lambda Integration The Lambda function confirms that the secret is correct and starts the Amazon EC2 instance with Minecraft installed.The API Gateway will call the Lambda function, passing the secret.Give a URL to your friends that calls the API Gateway and passes a 'secret' (effectively a password).Create an API Gateway that triggers the Lambda function.Create an AWS Lambda function that turns on the server.Whether you willing to give your friends AWS credentials (not a good idea) that they could use to start the server directly, or whether it should be an indirect method.įrankly, I would recommend the following architecture:.Whether only authorized users should be able to trigger the Lambda function, or is it okay that anybody (eg a web crawler) might trigger it.When considering a method to use, you should consider security implications such as: Trigger an Amazon CloudWatch Alarm (which calls Lambda via SNS).Somehow put a message in an SNS topic or an SQS queue. ![]() There are a few ways you could have users trigger the AWS Lambda function: Therefore, another mechanism is required that can be used to start the server.Ĭombine that with your desire to minimise costs and the only real solution is to somehow trigger an AWS Lambda function, which could start the server. If the server is off, it would not be possible to "connect" to the server. ![]()
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