在外面找到的方法如下:
Use this command to find your active zone(s):
firewall-cmd --get-active-zones
It will say either public, dmz, or something else. You should only apply to the zones required.
In the case of dmz try:
firewall-cmd --zone=dmz --add-port=2888/tcp --permanent
Otherwise, substitute dmz for your zone, for example, if your zone is public:
firewall-cmd --zone=public --add-port=2888/tcp --permanent
Then remember to reload the firewall for changes to take effect.
firewall-cmd --reload
