DRBD (Distributed Replicated Block Device) is an open source software that provides network-based RAID-1 functionality for Linux. In this tutorial, we will show you how to install DRBD on Ubuntu Server latest.
Before starting the installation, ensure that you have the following:
The first step is to update your system packages to the latest versions. Run the following command in the terminal:
sudo apt update && sudo apt upgrade
DRBD is available in the Ubuntu official package repository, so you can easily install it using the apt command.
sudo apt install drbd-utils
After installing the DRBD package, you need to configure it according to your requirements. The configuration file for DRBD is located at /etc/drbd.conf. You can edit this file using your favorite text editor.
Here is an example configuration file:
resource r0 {
protocol C;
syncer {
rate 50M;
}
on server1 {
device /dev/drbd0;
disk /dev/sda1;
address 10.0.0.1:7788;
}
on server2 {
device /dev/drbd0;
disk /dev/sda1;
address 10.0.0.2:7788;
}
}
In the above configuration file, there is a resource named r0 that uses the C protocol (which is the most commonly used protocol for DRBD). The syncer block specifies the synchronization rate of DRBD. In this example, the rate is configured to be 50MB/s.
The on blocks specify the configuration for each node. In this example, there are two nodes: server1 and server2. The address option specifies the IP address and port number used by DRBD to communicate between the nodes. The device option specifies the name of the DRBD block device, and the disk option specifies the physical disk that is used by DRBD.
You can modify this configuration file according to your specific requirements.
After configuring DRBD, you need to start the DRBD service. Run the following command in the terminal:
sudo systemctl start drbd
You can verify the status of DRBD by running the following command in the terminal:
sudo drbdadm status
If DRBD is working correctly, you should see output similar to the following:
r0 role:Secondary
disk:Inconsistent
server1 /dev/drbd0: cs:Connected ro:Secondary/Primary ds:Inconsistent/UpToDate C r-----
server2 /dev/drbd0: cs:Connected ro:Primary/Secondary ds:UpToDate/Inconsistent C r-----
In this tutorial, you learned how to install and configure DRBD on Ubuntu Server latest. With DRBD, you can easily create a redundant, high-availability storage solution for your Linux systems.
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