My VM on ESXi have all different dates. Here is how toset them the same.
First, you’ll need to install NTP. For Debian or Ubuntu, that would be this command:
# sudo apt-get install ntp |
For Redhat or CentOS, you’ll need to use this one:
# yum install ntp |
Then you’ll want to edit the /etc/ntp.conf file, which is quite possibly already filled out for you.
# nano /etc/ntp.conf |
You can get a list of server addresses at www.pool.ntp.org. Here are the North America ones:
server 0.north-america.pool.ntp.orgserver 1.north-america.pool.ntp.orgserver 2.north-america.pool.ntp.orgserver 3.north-america.pool.ntp.org |
Set it to run at boot
# chkconfig --listntpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off |
For Redhat and CentOS 6
chkconfig ntpd on |
# ntpd 0:off 1:off 2:on 3:on 4:on 5:on 6:off |
For Redhat 7 and CentOS 7
# systemctl enable ntpd.service |
CentOS 6 restart or start the NTPD service:
# /etc/init.d/ntpd restart |
CentOS 7 Restart
# /bin/systemctl start ntpd.service |
If you want to update the time right now, you can stop the NTP service and then run the following command, swapping out your preferred server for pool.ntp.org.
/usr/sbin/ntpdate pool.ntp.org |