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If your Lightsail instance keeps showing a Status Check Failed message, it’s probably because the CPU resources are running out. Here’s how you can understand and fix this issue.
When your Lightsail server uses more CPU than it’s allowed to, performance can slow down a lot. These servers are designed to have a baseline performance with the ability to burst above that for short times. But if you use up all the burst credits, the server slows down dramatically. It might stop responding at all, and the system can’t properly answer the health checks, making it look like it’s failed.
This problem often happens because the server is overloaded. The operating system and apps struggle to work properly when too many resources are used up. While the server is still running, it’s really slowed down and can’t fix itself.
To avoid this situation, you have a few options:
First, consider upgrading to a larger Lightsail plan. Bigger plans come with higher CPU limits and more credits, so your server can handle more activity without running out.
Second, optimize your applications. Check for processes or plugins that use a lot of CPU and turn off what isn’t necessary. For example, if you run a website with WordPress, too many plugins or custom themes might be slowing things down.
Third, keep an eye on how much CPU your server uses. Use Lightsail’s monitoring tools to track your CPU and burst credits. This way, you can spot potential problems early and make smarter decisions about resources.
Lastly, if you need a quick fix, you could set up an automatic reboot system. This would restart your server when it becomes unresponsive. You can do this with external monitoring tools combined with AWS commands or scripts.
In most cases, the main cause is that your server plan isn’t powerful enough for your needs. Upgrading to a bigger plan or reducing the workload is the best long-term solution. If you want more details or assistance, check out resources like AWS forums or official guides on managing Lightsail instances.
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