Quick note for myself. Today I have to increase php upload maximum size in Centos server. I got this error : # /sbin/service httpd restart Stopping httpd:                                            [FAILED] Starting httpd: (98)Address already in use: make_sock: could not bind to address [::]:80 (98)Address already in use: make_sock: could not bind to address 0.0.0.0:80 no listening sockets […]