centos7 Failed to start firewalld.service: Unit is masked.
centos7 启动防火墙失败：Failed to start firewalld.service: Unit is masked. ---- 刚yum安装了iptables
解决：
SRE实战 互联网时代守护先锋，助力企业售后服务体系运筹帷幄！一键直达领取阿里云限量特价优惠。执行”systemctl start firewalld”启动，出现”Failed to start firewalld.service: Unit is masked.”错误。继续找解决方法，然后输入”systemctl unmask firewalld.service”。
解决CentOS7出现的”Failed to start firewalld.service”问题
然后再启动”systemctl start firewalld”即可解决问题没有报错。
更多精彩
