May 27 09:27:24 server systemd[1]: Starting A high performance web server and a reverse proxy server...
May 27 09:27:25 server nginx[3715]: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
May 27 09:27:25 server nginx[3715]: nginx: [emerg] bind() to 0.0.0.0:443 failed (98: Address already in use)

deploy@server:~$ sudo netstat -tulpn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:443             0.0.0.0:*               LISTEN      322/sshd
tcp        0      0 0.0.0.0:111             0.0.0.0:*               LISTEN      189/rpcbind
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      598/apache2
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      322/sshd
tcp        0      0 0.0.0.0:25              0.0.0.0:*               LISTEN      517/master
tcp6       0      0 :::111                  :::*                    LISTEN      189/rpcbind
tcp6       0      0 :::25                   :::*                    LISTEN      517/master
udp        0      0 0.0.0.0:789             0.0.0.0:*                           189/rpcbind
udp        0      0 0.0.0.0:111             0.0.0.0:*                           189/rpcbind
udp6       0      0 :::789                  :::*                                189/rpcbind
udp6       0      0 :::111                  :::*                                189/rpcbind