[root@yuandong2019 ~]# systemctl stop firewalld.service
[root@yuandong2019 ~]# systemctl disable firewalld.service
[root@yuandong2019 ~]# systemctl status firewalld.service
● firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
Active: inactive (dead)
Docs: man:firewalld(1)
May 29 15:04:18 yuandong2019 firewalld[5820]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -D FORWARD -i docker0 -o docker0 -j DROP' failed:... chain?).
May 29 15:10:30 yuandong2019 firewalld[5820]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -t nat -D OUTPUT -m addrtype --dst-type LOCAL -j ...hat name.
May 29 15:10:30 yuandong2019 firewalld[5820]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -t nat -D PREROUTING' failed: iptables: Bad rule ... chain?).
May 29 15:10:30 yuandong2019 firewalld[5820]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -t nat -D OUTPUT' failed: iptables: Bad rule (doe... chain?).
May 29 15:10:30 yuandong2019 firewalld[5820]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -t filter -X DOCKER' failed: iptables: Too many links.
May 29 15:10:30 yuandong2019 firewalld[5820]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -t filter -X DOCKER-ISOLATION' failed: iptables: ...ny links.
May 29 15:10:30 yuandong2019 firewalld[5820]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -D FORWARD -i docker0 -o docker0 -j DROP' failed:... chain?).
May 29 15:10:31 yuandong2019 firewalld[5820]: WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -D FORWARD -i docker0 -o docker0 -j DROP' failed:... chain?).
May 29 15:31:26 yuandong2019 systemd[1]: Stopping firewalld - dynamic firewall daemon...
May 29 15:31:26 yuandong2019 systemd[1]: Stopped firewalld - dynamic firewall daemon.
Hint: Some lines were ellipsized, use -l to show in full.
启动一个服务：systemctl start firewalld.service
关闭一个服务：systemctl stop firewalld.service
重启一个服务：systemctl restart firewalld.service
显示一个服务的状态：systemctl status firewalld.service
在开机时启用一个服务：systemctl enable firewalld.service
在开机时禁用一个服务：systemctl disable firewalld.service
查看服务是否开机启动：systemctl is-enabled firewalld.service;echo $?
查看已启动的服务列表：systemctl list-unit-files|grep enabled