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A.14.9. DRBD and System Requirements

In the following section, we provide answers to questions that are most frequently asked about DRBD and System Requirements.

Questions

Questions and Answers

23.14.9.1: What other packages besides DRBD are required?

When using pre-built binary packages, none except a matching kernel, plus packages for glibc and your favorite shell. When compiling DRBD from source additional prerequisite packages may be required. They include but are not limited to:

  • glib-devel

  • openssl

  • devel

  • libgcrypt-devel

  • glib2-devel

  • pkgconfig

  • ncurses-devel

  • rpm-build

  • rpm-devel

  • redhat-rpm-config

  • gcc

  • gcc-c++

  • bison

  • flex

  • gnutls-devel

  • lm_sensors-devel

  • net-snmp-devel

  • python-devel

  • bzip2-devel

  • libselinux-devel

  • perl-DBI

  • libnet

Pre-built x86 and x86_64 packages for specific kernel versions are available with a support subscription from LINBIT. Please note that if the kernel is upgraded, DRBD must be as well.

23.14.9.2: How many machines are required to set up DRBD?

Two machines are required to achieve the minimum degree of high availability. Although at any one given point in time one will be primary and one will be secondary, it is better to consider the machines as part of a mirrored pair without a “natural” primary machine.

23.14.9.3: Does DRBD only run on Linux?

DRBD is a Linux Kernel Module, and can work with many popular Linux distributions. DRBD is currently not available for non-Linux operating systems.