Red Hat Summit Red Hat SummitSupportConsoleDevelopersStart a trialContact

1.2. Prerequisites

Ensure that your environment meets the following requirements.
File System Requirements

XFS - Format the back-end file system using XFS for glusterFS bricks. XFS can journal metadata, resulting in faster crash recovery. The XFS file system can also be defragmented and expanded while mounted and active.

Note

Red Hat assists existing Gluster Storage Software Appliance customers using ext3 or ext4 to upgrade to a supported version of Red Hat Gluster Storage using the XFS back-end file system.
Logical Volume Manager

Format glusterFS bricks using XFS on the Logical Volume Manager to prepare for the installation.

Network Time Configuration
  • Synchronize time across all Red Hat Gluster Storage servers using the Network Time Protocol (NTP) daemon.

1.2.1. Network Time Protocol Setup

Use a remote server over the Network Time Protocol (NTP) to synchronize the system clock. Set the ntpd daemon to automatically synchronize the time during the boot process as follows:
  1. Edit the NTP configuration file /etc/ntp.conf using a text editor such as vim or nano.
    Copy to Clipboard Toggle word wrap 
    # nano /etc/ntp.conf
  2. Add or edit the list of public NTP servers in the ntp.conf file as follows: Copy to Clipboard Toggle word wrap 
    server 0.rhel.pool.ntp.org
server 1.rhel.pool.ntp.org
server 2.rhel.pool.ntp.org
     The Red Hat Enterprise Linux 6 version of this file already contains the required information. Edit the contents of this file if customization is required.
  3. Optionally, increase the initial synchronization speed by appending the iburst directive to each line:
    Copy to Clipboard Toggle word wrap 
    server 0.rhel.pool.ntp.org iburst
server 1.rhel.pool.ntp.org iburst
server 2.rhel.pool.ntp.org iburst
  4. After the list of servers is complete, set the required permissions in the same file. Ensure that only localhost has unrestricted access:
    Copy to Clipboard Toggle word wrap 
    restrict default kod nomodify notrap nopeer noquery
restrict -6 default kod nomodify notrap nopeer noquery
restrict 127.0.0.1
restrict -6 ::1
  5. Save all changes, exit the editor, and restart the NTP daemon: Copy to Clipboard Toggle word wrap 
    # service ntpd restart
  6. Ensure that the ntpd daemon starts at boot time:
    Copy to Clipboard Toggle word wrap 
    # chkconfig ntpd on
Use the ntpdate command for a one-time synchronization of NTP. For more information about this feature, see the Red Hat Enterprise Linux Deployment Guide.
Back to top
Red Hat logoGithubredditYoutubeTwitter

Learn

Try, buy, & sell

Communities

About Red Hat Documentation

We help Red Hat users innovate and achieve their goals with our products and services with content they can trust. Explore our recent updates.

Making open source more inclusive

Red Hat is committed to replacing problematic language in our code, documentation, and web properties. For more details, see the Red Hat Blog.

About Red Hat

We deliver hardened solutions that make it easier for enterprises to work across platforms and environments, from the core datacenter to the network edge.

Theme

© 2025 Red Hat, Inc.