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nginx fails to start: nginx: [emerg] bind() to 203.0.113.2:443 failed (98: Address already in use)

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Leonid Gukhman
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Applicable to:

  • Plesk Onyx for Linux
  • Plesk for Linux

Symptoms

  • nginx fails to start:

    # service nginx starts:
    nginx: [emerg] bind() to 203.0.113.2:443 failed (98: Address already in use)

  • There are running nginx processes on the server:

    # ps aux | grep nginx
    root 6927 0.0 0.1 38604 4752 ? Ss 06:27 0:00 nginx: master process /usr/sbin/nginx

Cause

nginx processes are stuck.

Resolution

  1. Login server via SSH.

  2. Find the stuck nginx processes:

    # # ps aux | grep nginx
    root 6927 0.0 0.1 38604 4752 ? Ss 06:27 0:00 nginx: master process /usr/sbin/nginx

  3. Kill the stuck processes using the ID(s) taken from the output of the previous command:

    # kill -9 6927

  4. Restart nginx:

    # service nginx restart

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