Network Time Protocol (NTP) configuration

The Blue Planet host environment installer installs and enables NTP using RHEL or Ubuntu pool servers defined in /etc/ntp.conf, depending on your OS.

If you prefer another NTP source, complete the following steps.

  1. In /etc/ntp.conf, comment out the Ubuntu pool servers and add your NTP server.

    $ sudo vim /etc/ntp.conf

    For example, for Red Hat comment out the text below.

    # Use public servers from the pool.ntp.org project.
# Consider joining the pool (http://www.pool.ntp.org/join.html).
server 0.rhel.pool.ntp.org iburst
server 1.rhel.pool.ntp.org iburst
server 2.rhel.pool.ntp.org iburst
server 3.rhel.pool.ntp.org iburst

    For Ubuntu, comment out the following text.

    # Use servers from the NTP Pool Project. Approved by Ubuntu TechnicalBoard16 # on 2011-02-08 (LP: #104525). See http://www.pool.ntp.org/join.html for17
# more information.18
# pool 0.ubuntu.pool.ntp.org iburst19
# pool 1.ubuntu.pool.ntp.org iburst20
# pool 2.ubuntu.pool.ntp.org iburst21
# pool 3.ubuntu.pool.ntp.org iburst22 server vaxvntp01.ciena.com2324
# Use Ubuntu's ntp server as a fallback.25
# pool ntp.ubuntu.combpadmin@host1:~$b

  2. Restart NTP.

    $ sudo systemctl restart ntp
$ sudo systemctl status ntp

  3. Repeat steps 1 and 2 on each host.

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