查看hostname
[root@note02 eureka]# hostnamectl
Static hostname: note02
Icon name: computer-vm
Chassis: vm
Machine ID: 4434b1d63fed4e0088894xxxxxx
Boot ID: 368b0e771a3a497caa3e067xxxxx
Virtualization: vmware
Operating System: CentOS Linux 7 (Core)
CPE OS Name: cpe:/o:centos:centos:7
Kernel: Linux 3.10.0-862.el7.x86_64
Architecture: x86-64
修改当前主机hostname
[root@note02 eureka]# hostnamectl set-hostname note01.com
[root@note02 eureka]# hostname
note01.com
查看|关闭防火墙
[root@note02 eureka]# systemctl start firewalld.service --启用防火墙
[root@note02 eureka]# systemctl status firewalld.service --查看防火墙状态 running就是在运行
● firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
Active: active (running) since Fri 2020-09-04 15:57:08 CST; 8s ago
Docs: man:firewalld(1)
Main PID: 1573 (firewalld)
CGroup: /system.slice/firewalld.service
└─1573 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid
Sep 04 15:57:08 note01.com systemd[1]: Starting firewalld - dynamic firewall daemon...
Sep 04 15:57:08 note01.com systemd[1]: Started firewalld - dynamic firewall daemon.
[root@note02 eureka]# systemctl stop firewalld.service -- 关闭防火墙 dead 状态
[root@note02 eureka]# 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)
Sep 04 14:53:46 note02 systemd[1]: Starting firewalld - dynamic firewall daemon...
Sep 04 14:53:46 note02 systemd[1]: Started firewalld - dynamic firewall daemon.
Sep 04 15:25:25 note02 systemd[1]: Stopping firewalld - dynamic firewall daemon...
Sep 04 15:25:25 note02 systemd[1]: Stopped firewalld - dynamic firewall daemon.
Sep 04 15:57:08 note01.com systemd[1]: Starting firewalld - dynamic firewall daemon...
Sep 04 15:57:08 note01.com systemd[1]: Started firewalld - dynamic firewall daemon.
Sep 04 15:57:32 note01.com systemd[1]: Stopping firewalld - dynamic firewall daemon...
Sep 04 15:57:32 note01.com systemd[1]: Stopped firewalld - dynamic firewall daemon.
