(98)Address already in use: make_sock: could not bind to address 0.0.0.0:443

When starting httpd service, the following error message appears and the service failed to start.

# service httpd start
Starting httpd: (98)Address already in use: make_sock: could not bind to address 0.0.0.0:443
no listening sockets available, shutting down
Unable to open logs

The error message means that when httpd tried to start, some other process was already listening on 443. To see what other processes are using port 443, the following two commands may be used:

# netstat -A inet -lnp
# lsof -i tcp:443

Using the commands shown above, find a process that is listening on port 443 and kill that process. And, restart the http daemon.

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