安装apache

yum install httpd

vi /etc/httpd/conf/httpd.conf

修改默认端口为81

service httpd start

netstat -nltp

[root@xxx html]# netstat -nltp

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name

tcp               0.0.0.0:              0.0.0.0:*               LISTEN      /httpd        

sudo firewall-cmd --permanent --zone=public --add-service=http

sudo firewall-cmd --permanent --zone=public --add-service=https

sudo firewall-cmd --reload

sudo systemctl status httpd

sudo systemctl enable httpd

sudo systemctl stop httpd

sudo systemctl start httpd

sudo yum install httpd

sudo yum reinstall httpd

netstat -nltp