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Installing and Managing DRBD
8
Services
This section describes how to install, configure, and manage a device-level software RAID 1 across
a network using DRBD* (Distributed Replicated Block Device) for Linux.
Section 8.1, "Understanding DRBD," on page 85
Section 8.2, "Installing DRBD Services," on page 85
Section 8.3, "Configuring the DRBD Service," on page 86
8.1 Understanding DRBD
DRBD allows you to create a mirror of devices that are located at two different sites across a
network. When used with HeartBeat 2 (HB2), DRBD supports distributed high-availability Linux
clusters.
Data on the primary device is replicated to the secondary device in a way that ensures that both
copies of the data are always identical.
The data traffic between mirrors is not encrypted. For secure data exchange, you should deploy a
virtual private network (VPN) solution for the connection.
8.1.1 Additional Information
The following open-source resources are available for DRBD:
DRBD.org (http://www.drbd.org)
DRBD references at the Linux High-Availability Project (http://linux-ha.org/DRBD)
Linux High-Availability Project
For information about installing and configuring HeartBeat 2 for SUSE
10, see the
HeartBeat 2 Installation and Setup Guide (http://www.novell.com/documentation/
sles10/hb2/data/hb2_config.html)
Enterprise Server 10
(http://www.novell.com/documentation/sles10).
8.2 Installing DRBD Services
1 Install the High Availability (HA) pattern on both SUSE Linux Enterprise Servers in your
networked cluster. Installing HA also installs the drbd program files.
1a Log in as the root user or equivalent, then open YaST.
1b Choose Software > Software Management.
1c Change the filter to Patterns.
1d Under Base Technologies, select High Availability.
1e Click Accept.
2 Install the drbd kernel modules on both servers.
on the
Novell Documentation Web site for SUSE Linux
by the
®
Linux Enterprise Server
Installing and Managing DRBD Services
8
85
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