To disable SELinux, edit
sed -i 's/^SELINUX=.*/SELINUX=disabled/g' /etc/selinux/configNow you need to reboot. If you don’t want to reboot, disable it for current session with
setenforce 0If you use SELinux, you may need to configure it for each applications.
For web server
setsebool httpd_can_network_connect true
setsebool -P httpd_can_network_connect_db 1
setsebool -P memcached_connect_any 1CURL ERROR 7 could not establish a secure connection to WordPress.org
SELinux allow non default SSH port