執行 systemctl start firewalld 命令后出現Failed to start firewalld.service: Unit is masked
firewalld服務被鎖定，不能添加對應端口 執行命令，即可實現取消服務的鎖定 # systemctl unmask firewalld 下次需要鎖定該服務時執行 # systemctl mask firewalld ...
原文：centos7 Failed to start firewalld.service: Unit is masked.
centos 啟動防火牆失敗：Failed to start firewalld.service: Unit is masked. 剛yum安裝了iptables 解決： 執行 systemctl start firewalld 啟動，出現 Failed to start firewalld.service: Unit is masked. 錯誤。繼續找解決方法，然后輸入 systemctl un ...
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CentOS 7出現Failed to start firewalld.service: Unit is masked的解決辦法和firewalld 防火牆開關
說明：剛剛使用systemctl start firewalld命令開啟防火牆的時候，卻開不成功，出現Failed to start firewalld.service: Unit is masked的錯誤，經過搜索下后，發現是firewalld服務被鎖定了，這里說下方法。 方法 ...
執行 systemctl start firewalld 命令后出現Failed to start firewalld.service: Unit is masked
firewalld服務被鎖定，不能添加對應端口 執行命令，即可實現取消服務的鎖定 # systemctl unmask firewalld 下次需要鎖定該服務時執行 # systemctl mask firewalld ...
Centos7關閉防火牆時遇到的錯誤Failed to start firewalld.service: Unit not found. Unit firewalld.service could no
Centos7關閉防火牆 執行命令 systemctl status firewalld.service 時報錯Unit firewalld.service could not be found.然后查了很多資料都說執行下面這個就解決了 systemctl unmask ...
Unit is masked.
今天裝完開源郵箱服務（EwoMail）之后發現防火牆被屏蔽了，執行相關所有firewall的命令都失效，提示如下： 執行下 即可解除屏蔽 國產開源太可怕..... ...
CentOS7安裝MySQL報錯,解決Failed to start mysqld.service: Unit not found CentOS7安裝MySQL,解決Failed to start mysqld.service: Unit not found
當輸入命令 ~]# systemctl start mysql.service 要啟動MySQL數據庫是卻是這樣的提示 Failed to start mysqld.service: Unit not found 解決方法如下: 首先需要安裝mariadb-server ...
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