Cloudflare ошибка 502

When troubleshooting most 5XX errors, the correct course of action is to first contact your hosting provider or site administrator to troubleshoot and gather data.

Required error details for hosting provider

When contacting your hosting provider, give them the following information:

1. Specific 5XX error code and message.
2. Time and timezone the 5XX error occurred.
3. URL that resulted in the HTTP 5XX error (for example: https://www.example.com/images/icons/image1.png).

The error cause is not always found in the origin server error logs. Check logs of all load balancers, caches, proxies, or firewalls between Cloudflare and the origin web server.

Additional details to provide to your hosting provider or site administrator are listed within each error description below. Cloudflare Custom Error Pages change the appearance of default error pages discussed in this article.

Error analytics

Error Analytics per domain are available within Zone Analytics. Error Analytics allows insight into overall errors by HTTP error code and provides the URLs, source IP addresses, and Cloudflare data centers needed to diagnose and resolve the issue.  Error Analytics are based on a 1% traffic sample.

To view Error Analytics:

• Log in to the Cloudflare dashboard.
• Click the appropriate Cloudflare account for your site, then pick the domain.
• Next, click the Analytics & Logs app icon.
• Click Add filter, select Edge status code or Origin status code and choose any 5xx error code that you want to diagnose.

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Error 500: internal server error

Error 500 generally indicates an issue with your origin web server.  Error establishing database connection is a common HTTP 500 error message generated by your origin web server.  Contact your hosting provider to resolve.

Resolution

Provide details to your hosting provider to assist troubleshooting the issue.

However, if the 500 error contains “cloudflare” or “cloudflare-nginx” in the HTML response body, provide 
Cloudflare support with the following information:

1. Your domain name
2. The time and timezone of the 500 error occurrence
3. The output of www.example.com/cdn-cgi/trace from the browser where the 500 error was observed (replace www.example.com with your actual domain and hostname)

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Error 502 bad gateway or error 504 gateway timeout

An HTTP 502 or 504 error occurs when Cloudflare is unable to establish contact with your origin web server.

There are two possible causes:

• (Most common cause) 502/504 from your origin web server
• 502/504 from Cloudflare

502/504 from your origin web server

Cloudflare returns an Cloudflare-branded HTTP 502 or 504 error when your origin web server responds with a standard HTTP 502 bad gateway or 504 gateway timeout error:

Resolution

Contact your hosting provider to troubleshoot these common causes at your origin web server:

• Ensure the origin server responds to requests for the hostname and domain within the visitor’s URL that generated the 502 or 504 error.
• Investigate excessive server loads, crashes, or network failures.
• Identify applications or services that timed out or were blocked.

502/504 from Cloudflare

A 502 or 504 error originating from Cloudflare appears as follows:

If the error does not mention “cloudflare,” contact your hosting provider for assistance on 502/504 errors from your origin.

Resolution

To avoid delays processing your inquiry, provide these required details to 
Cloudflare Support:

1. Time and timezone the issue occurred.
2. URL that resulted in the HTTP 502 or 504 response (for example: https://www.example.com/images/icons/image1.png)
3. Output from browsing to <YOUR_DOMAIN>/cdn-cgi/trace.

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Error 503: service temporarily unavailable

HTTP error 503 occurs when your origin web server is overloaded. There are two possible causes discernible by error message:

• Error doesn’t contain “cloudflare” or “cloudflare-nginx” in the HTML response body.

Resolution: Contact your hosting provider to verify if they rate limit requests to your origin web server.

• Error contains “cloudflare” or “cloudflare-nginx” in the HTML response body.

Resolution: A connectivity issue occurred in a Cloudflare data center. Provide 
Cloudflare support with the following information:

1. Your domain name
2. The time and timezone of the 503 error occurrence
3. The output of 
   www.example.com/cdn-cgi/trace from the browser where the 503 error was observed (replace 
   www.example.com with your actual domain and hostname)

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Error 520: web server returns an unknown error

Error 520 occurs when the origin server returns an empty, unknown, or unexpected response to Cloudflare.

Resolution

Contact your hosting provider or site administrator and request a review of your origin web server error logs for crashes and to check for these common causes:

• Origin web server application crashes
• Cloudflare IPs not allowed at your origin
• Headers exceeding 16 KB (typically due to too many cookies)
• An empty response from the origin web server that lacks an HTTP status code or response body
• Missing response headers or origin web server not returning 
  proper HTTP error responses.
  • upstream prematurely closed connection while reading response header from upstream is a common error we may notice in our logs. This indicates the origin web server was having issues which caused Cloudflare to generate 520 errors.

If 520 errors continue after contacting your hosting provider or site administrator, provide the following information to 
Cloudflare Support:

• Full URL(s) of the resource requested when the error occurred
• Cloudflare cf-ray from the 520 error message
• Output from http://<YOUR_DOMAIN>/cdn-cgi/trace
• Two HAR files:
  • one with Cloudflare enabled on your website, and
  • the other with Cloudflare temporarily disabled.

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Error 521: web server is down

Error 521 occurs when the origin web server refuses connections from Cloudflare. Security solutions at your origin may block legitimate connections from certain 
Cloudflare IP addresses.

The two most common causes of 521 errors are:

• Offlined origin web server application
• Blocked Cloudflare requests

Resolution

Contact your site administrator or hosting provider to eliminate these common causes:

• Ensure your origin web server is responsive
• Review origin web server error logs to identify web server application crashes or outages.
• Confirm 
  Cloudflare IP addresses are not blocked or rate limited
• Allow all 
  Cloudflare IP ranges in your origin web server’s firewall or other security software
• Confirm that — if you have your SSL/TLS mode set to Full or Full (Strict) — you have installed a Cloudflare Origin Certificate
• Find additional troubleshooting information on the 
  Cloudflare Community.

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Error 522: connection timed out

Error 522 occurs when Cloudflare times out contacting the origin web server. Two different timeouts cause HTTP error 522 depending on when they occur between Cloudflare and the origin web server:

1. Before a connection is established, the origin web server does not return a SYN+ACK to Cloudflare within 15 seconds of Cloudflare sending a SYN.
2. After a connection is established, the origin web server doesn’t acknowledge (ACK) Cloudflare’s resource request within 90 seconds.

Resolution

Contact your hosting provider to check the following common causes at your origin web server:

• (Most common cause) 
  Cloudflare IP addresses are rate limited or blocked in .htaccess, iptables, or firewalls. Confirm your hosting provider allows Cloudflare IP addresses.
• An overloaded or offline origin web server drops incoming requests.
• Keepalives are disabled at the origin web server.
• The origin IP address in your Cloudflare DNS app does not match the IP address currently provisioned to your origin web server by your hosting provider.
• Packets were dropped at your origin web server.

If you are using Cloudflare Pages, verify that you have a custom domain set up and that your CNAME record is pointed to your custom Pages domain. Instructions on how to set up a custom Pages domain can be found here.

If none of the above leads to a resolution, request the following information from your hosting provider or site administrator before 
contacting Cloudflare support:

• An MTR or traceroute from your origin web server to a 
  Cloudflare IP address that most commonly connected to your origin web server before the issue occurred. Identify a connecting Cloudflare IP recorded in the origin web server logs.
• Details from the hosting provider’s investigation such as pertinent logs or conversations with the hosting provider.

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Error 523: origin is unreachable

Error 523 occurs when Cloudflare cannot contact your origin web server. This typically occurs when a network device between Cloudflare and the origin web server doesn’t have a route to the origin’s IP address.

Resolution Contact your hosting provider to exclude the following common causes at your origin web server:

• Confirm the correct origin IP address is listed for A or AAAA records within your Cloudflare DNS app.
• Troubleshoot Internet routing issues between your origin and Cloudflare, or with the origin itself.

If none of the above leads to a resolution, request the following information from your hosting provider or site administrator:

• An MTR or traceroute from your origin web server to a 
  Cloudflare IP address that most commonly connected to your origin web server before the issue occurred. Identify a connecting Cloudflare IP from the logs of the origin web server.
• If you use Railgun (deprecated) via a Cloudflare Hosting Partner, contact your hosting provider to troubleshoot the 523 errors.
• If you manage your Railgun (deprecated) installation, provide the following:
  • A traceroute to your origin web server from your Railgun server.
  • The most recent syslog file from your Railgun server.

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Error 524: a timeout occurred

Error 524 indicates that Cloudflare successfully connected to the origin web server, but the origin did not provide an HTTP response before the default 100 second connection timed out. This can happen if the origin server is taking too long because it has too much work to do — e.g. a large data query, or because the server is struggling for resources and cannot return any data in time.

Resolution

Here are the options we’d suggest to work around this issue:

• Implement status polling of large HTTP processes to avoid hitting this error.
• Contact your hosting provider to exclude the following common causes at your origin web server:
  • A long-running process on the origin web server.
  • An overloaded origin web server.

• Enterprise customers can increase the 524 timeout up to 6000 seconds using the proxy_read_timeout API endpoint.
• If you regularly run HTTP requests that take over 100 seconds to complete (for example large data exports), move those processes behind a subdomain not proxied (grey clouded) in the Cloudflare DNS app.
• If error 524 occurs for a domain using Cloudflare Railgun (deprecated), ensure the lan.timeout is set higher than the default of 30 seconds and restart the railgun service.

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Error 525: SSL handshake failed

525 errors indicate that the SSL handshake between Cloudflare and the origin web server failed. Error 525 occurs when these two conditions are true:

1. The 
   SSL handshake fails between Cloudflare and the origin web server, and
2. Full or Full (Strict) SSL is set in the Overview tab of your Cloudflare SSL/TLS app.

Resolution

Contact your hosting provider to exclude the following common causes at your origin web server:

• No valid SSL certificate installed
• Port 443 (or other custom secure port) is not open
• No SNI support
• The cipher suites presented by Cloudflare to the origin do not match the cipher suites supported by the origin web server

Additional checks

• Check if you have a certificate installed on your origin server. You can check this article for more details on how to run some tests. In case you don’t have any certificate, you can create and install our free Cloudflare origin CA certificate. Using Origin CA certificates allows you to encrypt traffic between Cloudflare and your origin web server.
• Review the cipher suites your server is using to ensure they match what is supported by Cloudflare.
• Check your server’s error logs from the timestamps you see 525s to ensure there are errors that could be causing the connection to be reset during the SSL handshake.

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Error 526: invalid SSL certificate

Error 526 occurs when these two conditions are true:

1. Cloudflare cannot validate the SSL certificate at your origin web server, and
2. Full SSL (Strict) SSL is set in the Overview tab of your Cloudflare SSL/TLS app.

Resolution

Request your server administrator or hosting provider to review the origin web server’s SSL certificates and verify that:

• Certificate is not expired
• Certificate is not revoked
• Certificate is signed by a 
  Certificate Authority (not self-signed)
• The requested or target domain name and hostname are in the certificate’s Common Name or Subject Alternative Name
• Your origin web server accepts connections over port SSL port 443
• Temporarily pause Cloudflare and visit 
  https://www.sslshopper.com/ssl-checker.html#hostname=www.example.com (replace www.example.com with your hostname and domain) to verify no issues exists with the origin SSL certificate:

If the origin server uses a self-signed certificate, configure the domain to use Full SSL instead of Full SSL (Strict). Refer to recommended SSL settings for your origin.

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527 Error: Railgun Listener to origin error

A 527 error indicates an interrupted connection between Cloudflare and your origin’s 
Railgun server (rg-listener). Common causes include:

• Firewall interference
• Network incidents or packet loss between the Railgun server and Cloudflare

Common causes of 527 errors include:

• Connection timeouts
• LAN timeout exceeded
• Connection refusals
• TLS/SSL related errors

If contacting Cloudflare support, provide the following information from the Railgun Listener:

• The full content of the railgun.conf file
• The full content of the railgun-nat.conf file
• Railgun log files that detail the observed errors

Connection timeouts

The following Railgun log errors indicate a connection failure between the Railgun Listener and your origin web server:

connection failed 0.0.0.0:443/example.com: dial tcp 0.0.0.0:443: i/o timeout
no response from origin (timeout) 0.0.0.0:80/example.com

Resolution

Contact your hosting provider for assistance to test for connectivity issues between your origin web server and your Railgun Listener. For example, a netcat command tests connectivity when run from the Railgun Listener to the origin web server’s SERVERIP and PORT (80 for HTTP or 443 for HTTPS):

LAN timeout exceeded

The following Railgun Listener log error is generated if the origin web server does not send an HTTP response to the Railgun Listener within the 30 second default timeout:

connection failed 0.0.0.0:443/example.com: dial tcp 0.0.0.0:443: i/o timeout



  


                       
  

The time is adjusted by the lan.timeout parameter of the railgun.conf file.

Resolution

Either increase the lan.timeout limit in railgun.conf, or review the web server configuration. Contact your hosting provider to confirm if the origin web server is overloaded.

Connection refusals

The following errors appear in the Railgun logs when requests from the Railgun Listener are refused:

Error getting page: dial tcp 0.0.0.0:80:connection refused

Resolution

Allow the IP of your Railgun Listener at your origin web server’s firewall.

The following errors appear in the Railgun logs if TLS connections fail:

connection failed 0.0.0.0:443/example.com: remote error: handshake failure
connection failed 0.0.0.0:443/example.com: dial tcp 0.0.0.0:443:connection refused



  


                       
  



connection failed 127.0.0.1:443/www.example.com: x509: certificate is valid for
example.com, not www.example.com

Resolution

If TLS/SSL errors occur, check the following on the origin web server and ensure that:

• Port 443 is open
• An SSL certificate is presented by the origin web server
• the SAN or Common Name of the origin web server’s SSL certificate contains the requested or target hostname
• SSL is set to Full or Full (Strict) in the Overview tab of the Cloudflare SSL/TLS app

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Error 530

HTTP error 530 is returned with an accompanying 1XXX error displayed. Search for the specific 1XXX error for troubleshooting information.

Enabling Load Balancing in China will cause a 530 error.

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• Gathering information to troubleshoot site issues
• Contacting Cloudflare Support
• Customizing Cloudflare error pages
• MTR/Traceroute Diagnosis and Usage
• Cloudflare Community Tips

502 Bad Gateway is a common HTTP error status code that occurs mostly due to server-side issues. That is, the error is related to the server of a website, and not the client (your browser).

Sometimes, Cloudflare can also trigger the 502 Bad Gateway error if it cannot reach the origin server or if its services are down. The error looks like this 👇🏻

Though it’s a temporary error, it can appear quite frequently depending on your hosting provider and website setup.

So why does this error occur, and how can you fix a 502 Bad Gateway Cloudflare error?

Let’s find out.

Was that a horrible explanation? Sorry, let me try again.

(Or click here if you’re just looking for how to fix this 502 Bad Gateway Cloudflare error)

Every time you visit a website, the browser sends a request to the origin server. The server then processes the request and sends it back to the browser with an HTTP status code.

But when you’re using Cloudflare on your website, the request is sent to Cloudflare before it reaches the client.

And a 502 Bad Gateway error occurs when Cloudflare cannot establish a valid connection with your website’s origin web server.

While this error message relates to the server-side, it can also happen if Cloudflare service is down or not configured correctly.

Different Variations of a 502 Bad Gateway Error

Based on your web server and browser, you might see a different 502 error, but they all mean the same thing:

• 502 Bad Gateway
• Error 502
• 502 Proxy Server
• HTTP 502
• 502 Proxy Error
• Temporary Error (502)
• HTTP Error 502 – Bad Gateway
• 502 Bad Gateway Nginx
• 502 Server Error: The web server encountered a temporary error and could not complete your request
• 502. That’s an error
• 502 Service Temporarily Overloaded

Some websites can also customize how a bad 502 gateway error looks.

However, all variations have the same meaning that the server acting as a proxy has not received a valid response from the origin server.

Causes for a Cloudflare 502 Bad Gateway Error

The two possible causes for this error are:

• 502 status code from the origin web server
• 502 error from Cloudflare

Error code from the origin server is most common as excessive server loads or network failures can result in server downtime.

If you have a WordPress website, then too many MySQL connections or low PHP memory limits can lead to request timeout. As a result, the website starts loading slowly and gives 502 errors.

Several other reasons can lead to a bad gateway error—incorrect DNS records, request block by a firewall, service failure (like PHP-FPM and cache services), or plugin/theme conflict in WordPress.

When a 502 Bad Gateway error occurs, it’s mostly related to the server-side response, but Cloudflare can also cause this error. So below are a few ways you can apply to fix the problem and get your website up and running.

1. Clear Your Cache And Reload The Page

Little is more frustrating than your IT guy telling you to reset your modem or turn your computer off and on again.

But they do it for a reason: it’s the most common (and easiest) way to fix the issue.

Cloudflare-related 502 Bad Gateway errors often occur due to temporary connection problems.

So simply waiting 5 minutes and reloading the page can do the trick.

If you still see a 502 bad gateway error, then clear your browser cache and reload the page again.

To clear the browser cache, you can hold down Ctrl + F5 for Windows and Linux browsers, and Cmd + Shift + R for Chrome and Safari on Mac.

This shortcut (known as a “hard refresh”) will bypass the cache for the specific page that you’re on, and the site will come back if it’s just a temporary connection issue.

2. Check Your DNS Servers

Sometimes, DNS can also cause 502 bad gateway errors.

If you’ve recently changed your web hosting service or moved to a different IP address, then it’s recommended to wait for 24 hours for the DNS changes to resolve.

You can also change your DNS to any third-party DNS servers like Google DNS to see if that solves the 502 error.

3. Check Your Web Hosting

The most common cause of Cloudflare 502 Bad Gateway error is when the web hosting server is down — especially on shared hostings where servers kill the processes that take too long to complete.

When that happens, Cloudflare returns a Cloudflare branded HTTP 502 bad gateway error.

To fix this, you can contact your hosting provider to make sure that the web server is performing correctly.

Sometimes, a sudden increase in traffic can also cause the web server to crash. When that happens, the server becomes temporarily overloaded, resulting in loss of a connection between the server and Cloudflare.

Servers can get overloaded due to excessive CPU and memory usage as well.

A lot of hostings also put servers into maintenance without any notification. The only way to solve the problem, in this case, is to wait for the hosting to finish the server maintenance.

So if the problem is on the host end, it’s best to contact the hosting customer support as they will help you faster.

4. Disable Cloudflare Proxy

If your hosting and DNS is fine, you can disable Cloudflare’s proxy for a while, and then visit the site again. If you’re using a dedicated CDN (content delivery network) in addition to Cloudflare, you can disable that too.

Cloudflare and CDNs can also experience system outages, that rarely happens, but a possible situation.

If the 502 error goes away after you disable Cloudflare proxy, then you will have to contact the Cloudflare support to find out the cause of the issue.

Also, if you see the following screen, then the error is because of Cloudflare.

To troubleshoot this, you can keep the Cloudflare proxy disabled, and share the following details with Cloudflare support:

• Time and timezone when the error occurred
• Website URL

Cloudflare usually replies within 1 to 3 business days to users on the free plan. You can also post your issue on the Cloudflare community platform, where other users might help you faster.

Before raising the problem in the Cloudflare support center, it’s good to check their System Status to make sure that Cloudflare services are working fine, and only you’re facing the 502 bad gateway error.

5. Plugin/Theme Conflict in WordPress

If you’re on a WordPress website, then some plugins and themes can also cause 502 errors when PHP scripts take too long for execution.

To check, go to “Plugins” in your WordPress dashboard (yourwebsite.com/wp-admin/), disable all the plugins, and see if the site works.

If this fixes the error, then activate the plugins one by one and reload the site after each activation. When you see the 502 error, you’ve found the cause of the problem.

But if you can’t access your WordPress dashboard, then you can disable the plugins via FTP by changing the name of the “Plugins” folder to something else (like “Old_Plugins”).

Once you have found the issue causing plugin/theme, you can contact their developers and notify them about the problem.

Summary

Bad Gateway errors are unexpected and can be frustrating. The best way to solve it is to see if the DNS is working fine, and your web server is running properly. You can also check the server error logs to pinpoint the issue triggered by any recently added application.

If it’s a Cloudflare issue, keep the proxy disabled and raise a ticket on their customer support.

Finally, if nothing works, reach out to your hosting provider and let them know about the error. They can identify the problem from their end and help you fix it as well.

502 Bad Gateway — это распространенный код состояния ошибки HTTP, который обычно возникает из-за проблем на сервере. Это когда ошибка связана с сервером веб-сайта, а не с клиентом (вашим браузером).

Когда Cloudflare не может связаться с исходным сервером или если его службы не работают, он может сгенерировать ошибку 502 Bad Gateway.

Несмотря на то, что это временная ошибка, она может произойти во многих случаях в зависимости от того, кто размещает ваш веб-сайт и как он настроен.

Итак, почему возникает эта ошибка и как исправить ошибку 502 Bad Gateway Cloudflare?

Давайте выясним.

Cloudflare выдает ошибку 502 Bad Gateway Error, когда возникают проблемы с подключением к исходному веб-серверу. Сообщение об ошибке также может появиться, если Cloudflare настроен неправильно или не работает.

Это был плохой способ объяснить это? Позвольте мне попробовать еще раз, извините.

(Или, если вы просто хотите узнать, как исправить эту ошибку 502 Bad Gateway Cloudflare, нажмите здесь.)

Когда вы заходите на сайт, браузер отправляет запрос на сервер, на котором хранится сайт. Затем сервер обрабатывает запрос и отправляет его обратно в браузер с кодом состояния HTTP.

Но когда вы используете Cloudflare на своем веб-сайте, запрос отправляется в Cloudflare до того, как он попадет к клиенту.

Ошибка 502 Bad Gateway возникает, когда Cloudflare не может установить хорошее соединение с веб-сервером, на котором работает ваш сайт.

Несмотря на то, что это сообщение об ошибке связано с сервером, оно также может произойти, если служба Cloudflare не работает или настроена неправильно.

Различные варианты ошибки 502 Bad Gateway

Ошибка 502 может выглядеть по-разному в зависимости от вашего веб-сервера и браузера, но означает одно и то же:

• 502 Bad Gateway
• Ошибка 502
• 502 Прокси-сервер
• HTTP 502
• 502 Ошибка прокси
• Временная ошибка (502)
• Ошибка HTTP 502 — неверный шлюз
• 502 Плохой шлюз Nginx
• 502 Ошибка сервера: временная ошибка не позволила веб-серверу выполнить ваш запрос.
• 502. Это ошибка
• 502 Сервис временно перегружен

Некоторые сайты также могут изменить внешний вид плохой ошибки шлюза 502.

Но независимо от того, что он говорит, это означает, что сервер, выступающий в роли прокси, не получил действительного ответа от сервера, отправившего запрос.

Ошибка 502 Bad Gateway, вызванная Cloudflare

Эта ошибка может быть вызвана двумя причинами:

• Исходный сервер вернул код состояния 502.
• Облачная ошибка 502

Когда серверы перегружены или возникают проблемы с сетью, они могут генерировать коды ошибок.

Если у вас есть сайт WordPress, время ожидания запроса может произойти, если у вас слишком много подключений MySQL или недостаточно памяти PHP. Из-за этого сайт начинает медленно загружаться и выдает 502 ошибки.

Плохая ошибка шлюза также может быть вызвана неправильными записями DNS, блокировкой запросов брандмауэром, сбоем служб (например, PHP-FPM и служб кэширования) или конфликтом между плагином и темой в WordPress.

Как исправить ошибку Cloudflare 502 Bad Gateway?

• Перезагрузите страницу после очистки кеша
• Вы должны проверить свои DNS-серверы
• Убедитесь, что ваш сайт размещен правильно
• Прокси Cloudflare должен быть отключен
• Конфликты между плагинами WordPress и темами

Когда происходит ошибка 502 Bad Gateway, обычно это происходит из-за ответа сервера, но Cloudflare также может быть ответственным за это. Итак, вот несколько вещей, которые вы можете сделать, чтобы решить эту проблему и вернуть свой сайт в онлайн.

1. Перезагрузите страницу после очистки кеша

Получить сообщение от своего ИТ-специалиста о сбросе модема или перезагрузке компьютера — одна из самых неприятных вещей, которые вы можете испытать.

Но они делают это, потому что это самый простой и распространенный способ решить проблему.

Большинство ошибок 502 Bad Gateway, связанных с Cloudflare, вызваны временными проблемами с подключением.

Так что все, что вам нужно сделать, это подождать 5 минут и перезагрузить страницу.

Если вы по-прежнему видите ошибку 502 bad gateway, очистите кеш браузера и перезагрузите страницу.

Удерживание Ctrl + F5 в браузерах Windows и Linux или Cmd + Shift + R в браузерах Mac Chrome и Safari очистит кеш браузера.

Этот ярлык, называемый «жестким обновлением», пропускает кеш страницы, на которой вы находитесь. Если это просто временная проблема с подключением, сайт снова загрузится.

2. Проверьте свои DNS-серверы

DNS также может иногда приводить к ошибкам 502 bad gateway.

Если вы только что сменили хостинговую компанию или перешли на новый IP-адрес, вам следует подождать 24 часа, пока изменения DNS вступят в силу.

Вы также можете использовать Google DNS или любой другой сторонний DNS-сервер, чтобы узнать, устраняет ли это ошибку 502.

3. Проверьте свой веб-хостинг

Существует несколько причин, по которым возникает ошибка Cloudflare 502 Bad Gateway. Это особенно актуально для виртуального хостинга, где серверы убивают длительные процессы.

Когда это происходит, Cloudflare отправляет обратно ошибку HTTP 502 неверный шлюз с брендом Cloudflare.

Ваш хостинг-провайдер может помочь вам исправить это, убедившись, что веб-сервер работает правильно.

Когда происходит внезапный рост трафика, веб-сервер также может дать сбой. Когда это происходит, сервер временно перегружается, и сервер и Cloudflare теряют связь друг с другом.

Серверы также могут быть перегружены, когда используется слишком много ЦП и памяти.

Многие хостинг-сервисы также отключают серверы на техническое обслуживание, никому не сообщая об этом. В этом случае единственный способ решить проблему — дождаться окончания обслуживания сервера.

Итак, если проблема связана с хостингом, лучше всего позвонить в службу поддержки хостинговой компании, потому что они могут помочь вам быстрее.

4. Отключить прокси-сервер Cloudflare

Если ваш хостинг и DNS работают нормально, вы можете на время отключить прокси Cloudflare, а затем вернуться на сайт. Если вы также используете выделенный CDN (сеть доставки контента), вы также можете отключить его.

Cloudflare и CDN также могут иметь системные сбои, которые случаются не очень часто, но возможны.

Если ошибка 502 исчезнет после отключения прокси-сервера Cloudflare, вам нужно будет поговорить со службой поддержки Cloudflare, чтобы выяснить, что пошло не так.

Отключите прокси-сервер Cloudflare и предоставьте в службу поддержки Cloudflare следующую информацию, если вы хотите устранить эту проблему:

• Когда произошла ошибка и в каком часовом поясе
• URL-адрес веб-сайта

Обычно Cloudflare требуется от одного до трех рабочих дней, чтобы ответить пользователям бесплатного плана. Платформа сообщества Cloudflare также может решить вашу проблему быстрее, если вы опубликуете ее там.

Прежде чем обращаться в центр поддержки Cloudflare, рекомендуется проверить статус их системы, чтобы убедиться, что службы Cloudflare работают правильно и что ошибка 502 bad gateway возникает только на вашей стороне.

5. Конфликт плагина/темы в WordPress

В дополнение к длительному запуску PHP-скриптов, некоторые темы и плагины WordPress также могут вызывать ошибку 502, когда они работают слишком медленно.

На панели управления вашего веб-сайта WordPress (yourwebsite.com/wp-admin) вы можете отключить плагины, выбрав «Плагины». Затем убедитесь, что сайт работает.

Если это решит проблему, включайте каждый плагин по одному и перезагружайте сайт после каждого. Когда вы видите сообщение об ошибке 502, вы знаете, что не так.

Также возможно отключить ваши плагины через FTP, если вы не можете получить доступ к Панель инструментов WordPress переименовав папку «Плагины» во что-то другое, например «Старые плагины».

Как только вы найдете плагин или тему, которая вызывает проблему, вы можете связаться с ее разработчиками, чтобы сообщить им об этом.

Быстрые ссылки:

• Как исправить ошибку 403 «Запрещено в Cloudflare»?
• Как легко реализовать авторство Google
• Как быстро разместить свой блог в Google

Итоги: Cloudflare Ошибка 502 Плохой шлюз 2023

Ошибки Bad Gateway разочаровывают, потому что их не ожидают. Лучший способ исправить это — убедиться, что ваш DNS и веб-сервер работают нормально.

Вы также можете просмотреть журналы ошибок сервера, чтобы узнать, была ли проблема вызвана только что добавленным приложением.

Если проблема связана с Cloudflare, отключите прокси-сервер и создайте заявку в их службе поддержки.

Наконец, если ничего не работает, обратитесь в свою хостинговую компанию и сообщите им об ошибке. Они могут сказать, что не так с их стороны, а также помочь вам исправить это.

Пожалуйста, отправьте мне прямое сообщение (DM), если у вас есть какие-либо вопросы по поводу этой статьи о Cloudflare (или если у вас есть какие-либо предложения по ее улучшению).

A 502 Bad Gateway error occurs when Cloudflare is unable to contact the origin web server.

As a part of our Server Management Services, our Support Engineers help webmasters to fix Cloudflare-related errors regularly.

Let us today discuss the possible reasons and fixes for this error.

What causes Cloudflare 502 error

Cloudflare returns an HTTP 502 or 504 error when the origin web server responds with a standard HTTP 502 bad gateway or 504 gateway timeout error.

To list out, some of the common reasons for this error include:

• Excessive server load
• Firewall restrictions

Let us now look at some possible steps that our Support Engineers follow to resolve this error.

How to fix Cloudflare 502 error

The exact steps to be followed to resolve the 502 error depend on the particular reason that triggered it.Some of those include:

1.Investigate excessive server load

The first step that our Support Engineers follow when they receive the 502 error is to investigate the server load. As this error generally triggers due to excessive server loads, crashes, or network failures, they cross-check these parameters initially.

We already have some articles discussing how to troubleshoot server load here.

We often see that the underlying cause for 502 errors can be service failures for web server, mysql server etc.

Also, we largely see 502 errors when the Web server in failed status. A simple restart of the httpd service will make the websites working again. To avoid recurrence, our Support Specialists go way further and fixes the real reason for web server failure.

2. Firewall restrictions

Most Web Hosting servers have built-in firewall to block traffic from bad networks. Additionally, some servers implement Country-based firewall blocks as well. That is, websites will be served only to users from selected countries.

In such cases, a user accessing the website from a blocked network will see 502 errors.

Here, our Support Engineers modify the server firewall in a way that does not create a security risk for the server.

Nowadays, many website owners rely on third-party content delivery networks for faster loading of images, videos etc. on the websites.

So this firewall modification also needs to accommodate these third-party content delivery networks as well.

Conclusion

The Cloudflare 502 error triggers when the origin web server responds with a standard HTTP 502 bad gateway or 504 gateway timeout error. This happens due to firewall restrictions and server resource issues. Today, we saw how our Support Engineers fix them.

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Myself and my users are often running into a Cloudflare Bad Gateway 502 error. Trying to figure out what goes wrong is hard, because Cloudflare blames the hosting company and the hosting company blames Cloudflare. A typical situation when using Cloudflare.

What I noticed is that nothing actually fails. The host receives the request and is handling the request just fine but which sometimes takes a bit longer than usual to complete. But Cloudflare can’t wait and instead throws a Bad Gateway error, while the script is actually still running.

I’ve noticed this behavior when performing heavy back-end tasks (like generating +50 PDFs). My users notice this when they try to upload an image (which often starts a re-sizing task).

Is there a way I can configure my server so that Cloudflare knows that the request is still being processed? Or should I just ditch Cloudflare overall?