openstack/openstack-manuals
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openstack-manuals/doc/install-guide/source/environment-ntp-other.rst
Ivan Anfimov a4453d8488 Use dnf instead of yum - Network Time Protocol (NTP) 
Change-Id: Ibba389bae7297c95959e41c320be1cb126ded328
Closes-Bug: #2095098
2025-01-16 15:50:57 +00:00

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Other nodes

Other nodes reference the controller node for clock synchronization. Perform these steps on all other nodes.

Install and configure components

  1. Install the packages.

    For Ubuntu:

    # apt install chrony

    For RHEL or CentOS:

    # dnf install chrony

    For SUSE:

    # zypper install chrony

  2. Configure the chrony.conf file and comment out or remove all but one server key. Change it to reference the controller node.

    For RHEL, CentOS, or SUSE, edit the /etc/chrony.conf file:

    server controller iburst

    For Ubuntu, edit the /etc/chrony/chrony.conf file:

    server controller iburst

  3. Comment out the pool 2.debian.pool.ntp.org offline iburst line.

  4. Restart the NTP service.

    For Ubuntu:

    # service chrony restart

    For RHEL, CentOS, or SUSE:

    # systemctl enable chronyd.service
# systemctl start chronyd.service