执行 systemctl start firewalld 命令后出现Failed to start firewalld.service: Unit is masked

firewalld服务被锁定,不能添加对应端口。

执行命令,即可实现取消服务的锁定

# systemctl unmask firewalld

下次需要锁定该服务时执行

# systemctl mask firewalld

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转载自blog.csdn.net/fangdengfu123/article/details/82422307