Re: [CentOS] Why the command 'service ntpd stop' cause the time reversed?

2015-02-12 Thread David chen
Hi guys, I don't use virtual machine. The 192.168.0.191 is an internal ntpd server configured by administrator, so i can not see what ntp server it synchronizes to or what is its time reference. But i have added a new line server 192.168.0.191 into file /etc/ntp.conf on ntpd client machines,

[CentOS] Why the command 'service ntpd stop' cause the time reversed?

2015-02-11 Thread David chen
A shell script is deployed to synchronize time, the script is invoked hourly by crontab, and its content is as follows: #!/bin/bash service ntpd stop ntpdate 192.168.0.191 #it's a valid ntpd server in LAN service ntpd start chkconfig ntpd on Inspected the Linux log(Centos6.4 /var/log/messages),

Re: [CentOS] Why the command 'service ntpd stop' cause the time reversed?

2015-02-11 Thread David chen
Hi guys, Thanks for your reply. I originally used the following command to synchronize time: ntpdate 192.168.0.191 but got the error: ntpdate[16715]: the NTP socket is in use, exiting So i used the way of stopping ntpd service. Now I have known that using command ntpdate -u 192.168.0.191 can solve