timedatectl实验

CSE实验 创建两台虚拟机 一台作为时间服务器 另一台从该服务器获取时间

• timeserver的设置

# 配置虚拟机server的网络
[root@localhost ~]# nmcli connection modify ens160 ipv4.dns 8.8.8.8 ipv4.addresses 192.168.25.100/24 ipv4.gateway 192.168.25.2 ipv4.method manual 
[root@localhost ~]# nmcli connection up ens160 
连接已成功激活（D-Bus 活动路径：/org/freedesktop/NetworkManager/ActiveConnection/3）
[root@localhost ~]# ip  a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:0c:29:3c:dc:7b brd ff:ff:ff:ff:ff:ff
    altname enp3s0
    inet 192.168.25.100/24 brd 192.168.25.255 scope global noprefixroute ens160
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe3c:dc7b/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever


#克隆的服务器和客户端名字，一样ssh后改个名
[root@localhost ~]# hostname
hostname     hostnamectl
[root@localhost ~]# hostnamectl hostname server
[root@localhost ~]# exit



Last login: Fri Mar 28 21:32:31 2025 from 192.168.25.1
# 在/etc/chrony.conf中 

# 将以下屏蔽不再从远程时间服务器获取时间
[root@server ~]# vim /etc/chrony.conf
[root@server ~]# systemctl stop chronyd.service
[root@server ~]# timedatectl set-time  "2011-11-11 11:11:11"
[root@server ~]# systemctl start chronyd.service
[root@server ~]# systemctl stop firewalld
[root@server ~]# setenforce 0
[root@server ~]#

• timeclient设置

# 设置网络为192.168.xxx.200
[root@localhost ~]# nmcli connection modify ens160 ipv4.dns 8.8.8.8
[root@localhost ~]# nmcli connection modify ens160 ipv4.addresses 192.168.25.200/24
[root@localhost ~]# nmcli connection modify ens160 ipv4.gateway 192.168.252.2
[root@localhost ~]# nmcli connection modify ens160 ipv4.method manual 
[root@localhost ~]# nmcli connection up ens160 
连接已成功激活（D-Bus 活动路径：/org/freedesktop/NetworkManager/ActiveConnection/4）
[root@localhost ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:0c:29:17:53:7b brd ff:ff:ff:ff:ff:ff
    altname enp3s0
    inet 192.168.25.200/24 brd 192.168.25.255 scope global noprefixroute ens160
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe17:537b/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
[root@localhost ~]#


#克隆的服务器和客户端名字，一样ssh后改个名
[root@localhost ~]# hostnamectl hostname client
[root@localhost ~]# exit


Last login: Fri Mar 28 21:32:26 2025 from 192.168.25.1
[root@client ~]# vim /etc/chrony.conf
[root@client ~]# systemctl restart chronyd.service
[root@client ~]# timedatectl
               Local time: 五 2011-11-11 11:14:55 CST
           Universal time: 五 2011-11-11 03:14:55 UTC
                 RTC time: 五 2011-11-11 03:14:55
                Time zone: Asia/Shanghai (CST, +0800)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no
[root@client ~]#