Http error 503 service unavailable explained


Imagine someone searches for a topic and finds your website on page one of Google. When they click through to lớn your website, though, their eyes land on a bland webpage that says "Service Unavailable".

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What do you think they"ll bởi vì when they find your trang web on Google again? Odds are, they"ll skip over it và click on the next link. If visitors are looking for answers & you"re promising them those answers, but you can"t deliver because something"s wrong with your website, they"ll chiến bại trust in your brand.

Unfortunately, if your website experiences a 503 Service Unavailable Error, there"s no silver bullet solution. You have khổng lồ investigate what"s actually causing the issue, because even though these types of errors indicate what happened khổng lồ your website, they don"t tell you why it happened.

To help you fix your 503 Service Unavailable Error & avoid losing potential customers, kiểm tra out our guide on what exactly the issue is and its most common solutions.

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What is a 503 error?

A 503 Service Unavailable Error is an HTTP response status code that indicates your web vps operates properly, but it can"t handle a request at the moment. Since it"s just a generic error message, it"s difficult to lớn pinpoint the issue"s exact cause.

When your trang web is experiencing a 503 Service Unavailable Error, your site"s visitors will land on an error page. Fortunately, Airbrake recommends five common solutions for troubleshooting most 503 Service Unavailable Errors.

How lớn Fix an HTTP Error 503

Reboot your server. Kiểm tra to see if your web server is going through maintenance. Fix faulty firewall configurations. Sift through your server-side logs. Comb through your website"s code lớn find bugs.

1. Restart your server.

Sometimes, there will be congestion in the vps chain that hosts your website. One of the most effective ways to mở cửa up & refresh it is khổng lồ simply restart your website server. If your website is hosted on multiple servers, make sure you restart all of them khổng lồ get it running again.

2. Kiểm tra to see if your web hệ thống is going through maintenance.

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Most web servers shut down when they"re going through maintenance. If you can access your server"s administration settings, check the configuration options lớn see when automatic maintenance sessions are scheduled. If you"d rather have complete control over your server"s maintenance, you can disable these automatic updates in the configuration options, too.

3. Fix faulty firewall configurations.

Your firewall is your website"s gatekeeper, protecting your site from malicious visitors or distributed denial-of-service (DDoS) attacks. Sometimes, a faulty firewall configuration will cause your firewall lớn deem requests from a nội dung delivery network as an attack on your server and reject them, resulting in a 503 Service Unavailable Error. Kiểm tra your firewall configuration khổng lồ pinpoint và fix the issue.

4. Sift through your server-side logs.

There are two types of server-side logs -- applications logs và server logs. Application logs recount your website"s entire history, letting you see the web pages requested by visitors & the servers it connected to. Server logs provide information about the hardware running your server, revealing details about its health & status. Sift through both types of server-side logs to uncover any alarming information about your hệ thống or website.

5. Comb through your website"s code to find bugs.

If there"s a mistake in your website"s code, your web server might not be able to correctly answer requests from a content delivery network. Comb through your code to find bugs or copy your code into a development machine. It"ll perform a thorough debug process that will simulate the exact situation your 503 Service Unavailable Error occurred in and allow you to find the exact moment things went wrong.

Any time there"s an error on your site, it"s important to fix it as soon as you can. If customers get errors, they probably won"t come back to your page.

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Editor"s note: This post was originally published in January 2019 and has been updated for comprehensiveness.