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Server Logs and Diagnostics in Plesk

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Step 1: Log in to Plesk

Visit:

https://yourdomain.com:8443

Log in using your Plesk credentials.

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Step 2: Open the Log Browser

  1. In the left menu, click Websites & Domains

  2. Find your domain and click “Logs”

This opens the Log Browser, where you can monitor server activity in real-time or check past events.

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Step 3: Choose the Right Log to View

At the top of the Logs page, you’ll see a dropdown labeled something like:

Viewing: All logs / access_log / error_log / proxy_error_log

Here are the most common log types:

Log Type What It Shows
access_log All requests to your website (pages, images, etc.)
error_log PHP errors, script issues, misconfigurations
proxy_error_log Reverse proxy issues via nginx
mail_log (if available) Mail delivery attempts, bounces, or errors

Tip: Most website problems are logged in the error_log.


Step 4: Filter or Search Logs

  • Use the search box to look for specific terms like:

    • 500, 404, permission denied, database

  • Use the refresh icon to get real-time updates while testing


Step 5: Understand Common Log Messages

Here are a few common examples and what they mean:

Log Message What It Means
500 Internal Server Error A PHP or configuration issue
404 Not Found File or page missing
Permission denied File/folder doesn’t have correct permissions
Connection refused: MySQL server has gone away Problem with database server or credentials

If you're not sure what a message means, just copy it and search it — or ask your host or me!


Step 6: Check Resource Usage Logs (VPS/Dedicated)

If you have VPS or higher-level hosting:

  1. Go to Tools & Settings > Resource Usage

  2. You’ll see:

    • CPU and RAM usage

    • Time of overloads

    • A log of what caused high usage (like scripts or bots)


Step 7: Download Raw Logs (Optional)

Need to send logs to support?

  1. Go to Websites & Domains > Logs

  2. Click the “Download” icon near the top-right

  3. Save the compressed file and send it to your tech or hosting team


Tips for Using Logs Effectively

  • Use error logs when your site shows a white screen, “500 error”, or something breaks

  • Use access logs to track bots, suspicious traffic, or page visits

  • Clean logs regularly if your disk space is limited


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