Disable SELinux and iptables firewall

Modify selinux = disabled in the/etc/SELINUX/config file, and then restart the server.

Disable SELinux in Linux

1) it takes effect permanently after restart:

Modify selinux = disabled in the/etc/SELINUX/config file, and then restart the server.

2) it takes effect immediately and becomes invalid after restart:

Run the setenforce 0 command.

Appendix:

Setenforce 1 sets SELinux to enforcing mode

Setenforce 0 sets SELinux to permissive mode

Disable firewall (iptables) in Linux)

1) it takes effect permanently after restart:

Enable: chkconfig iptables on

Close: chkconfig iptables off

2) it takes effect immediately and becomes invalid after restart:

Enable: service iptables start

Disable: service iptables stop