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Question

Web server is down - Error 521?

Posted April 5, 2019 5.9k views
WordPressUbuntu 18.04

I just opened my website today and saw that “Error 521” web server is down! Also I’ve been using digital ocean for the past 5 months with cloudflare and haven’t seen such an error? So any help would be much appreciated.

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By:
jamessmith4

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Permission denied (publickey) for SSH login on new droplet. Unable to login Question Question
Deleted wordpress droplet, but domain still points to it Question Question
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2 comments
  • mburdett555 April 5, 2019
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    Can you share us some logs? You can find these in /var/log - perhaps give us the last few lines of the apache2/error.log if you run apache. Please let us know some more information about the software your server is running and your stack. Thanks

  • jamessmith4 April 5, 2019
    Reply Report

    my apache2/error.log is showing something like this

    [Fri Apr 05 06:25:02.852346 2019] [mpm_prefork:notice] [pid 24151] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g configured – resuming normal operations
    [Fri Apr 05 06:25:02.852372 2019] [core:notice] [pid 24151] AH00094: Command line: ’/usr/sbin/apache2’
    [Fri Apr 05 06:48:52.348663 2019] [mpm_prefork:notice] [pid 24151] AH00169: caught SIGTERM, shutting down
    [Fri Apr 05 06:48:55.399082 2019] [mpm_prefork:notice] [pid 16198] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g configured – resuming normal operations
    [Fri Apr 05 06:48:55.399141 2019] [core:notice] [pid 16198] AH00094: Command line: ’/usr/sbin/apache2’
    [Fri Apr 05 06:48:55.962026 2019] [mpm_prefork:notice] [pid 16198] AH00169: caught SIGTERM, shutting down
    [Fri Apr 05 06:49:01.739451 2019] [mpm_prefork:notice] [pid 16738] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g configured – resuming normal operations
    [Fri Apr 05 06:49:01.739508 2019] [core:notice] [pid 16738] AH00094: Command line: ’/usr/sbin/apache2’
    [Fri Apr 05 06:49:02.115546 2019] [mpm_prefork:notice] [pid 16738] AH00169: caught SIGTERM, shutting down
    [Fri Apr 05 12:30:16.792425 2019] [mpm_prefork:notice] [pid 18682] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g configured – resuming normal operations
    [Fri Apr 05 12:30:16.792484 2019] [core:notice] [pid 18682] AH00094: Command line: ’/usr/sbin/apache2’
    [Fri Apr 05 12:30:23.594864 2019] [mpm_prefork:notice] [pid 18682] AH00171: Graceful restart requested, doing restart
    [Fri Apr 05 12:30:23.675523 2019] [mpm_prefork:notice] [pid 18682] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g configured – resuming normal operations
    [Fri Apr 05 12:30:23.675537 2019] [core:notice] [pid 18682] AH00094: Command line: ’/usr/sbin/apache2’
    [Fri Apr 05 12:30:23.909395 2019] [mpm_prefork:notice] [pid 18682] AH00169: caught SIGTERM, shutting down

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3 answers
jamessmith4 April 6, 2019

Thanks to you! I just somehow found out that I need to reboot my droplet. For anyone who is facing such an issue try rebooting your droplet.

To reboot a server from the command line, run:

sudo shutdown -r now

To restart Apache, run:

sudo service apache2 restart

https://www.digitalocean.com/community/questions/how-to-reboot-droplet-through-the-command-line-restart-apache-server

Everything is working fine! BTW DigitalOcean support was not helpfull at all! They cant even suggest a thing apart from repeating one thing! “its not our problem”

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  • sososong February 28, 2020

    I use DigitalOcean for 8 days, and I meet this issue 4th time, I usually doing shutdown or wait 2 hours, but this time I have same error log, but shutdown and restart isn’t work for me anymore

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infoddae78c8fd1297cbe493eb April 6, 2019

Hello There

Im having the same issue, ive logging in to the website of DO. Ive also raised a ticket but no luck. The Site has been down since 2 hours. Can you help in a laymans language what to do.

Im getting the same Error 521 need urgent help.

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jamessmith4 April 6, 2019

I’m no expert myself but just like mburdett555 said check what the error is! To do that you need to access your error.log file that you can find it in /var/log/apache2/ and can acess it via FileZilla. After that anyone can tell whats causing the Error 521.

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