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Getting Started with the Datto Linux Agent

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This article provides system requirements and installation instructions for the Datto Linux Agent. The Linux agent protects Linux machines in conjunction with Datto's business continuity appliances.

Support for Linux is limited to 64-bit operating systems only.

Environment

  • Datto Linux Agent

Index

Versioning

The current release of the Datto Linux Agent is 1.0.16 with driver version 0.10.6 You can check the protected machine's agent version from the Protect tab of the Datto appliance's GUI. For release notes, see Datto Linux Agent (DLA): Software Release Notes.

For information about updating your Datto Linux Agent installation to a newer version, see this article.

Compatibility

The Datto Linux Agent supports the versions of Linux listed below. Compatibility of this backup solution with any hypervisor environment or operating system not listed in this article is untested and may yield unreliable results. 

Distro Virtualization Screenshot Notes
Red Hat Enterprise Linux/CentOS 6 Y Y  
Red Hat Enterprise Linux/CentOS 7 Y Y  
       
Scientific Linux 6 N Y  
Scientific Linux 7 N Y  
       
Fedora 26 Y Y  
Fedora 27 Y Y  
Fedora 28 Y Y  
       
SUSE Linux Enterprise 11 SP 4 Y N  
SUSE Linux Enterprise 12 Y N  
SUSE Linux Enterprise 12 SP 1 Y N  
SUSE Linux Enterprise 12 SP 2 Y N  
SUSE Linux Enterprise 15 Y N You may have to install sudo.
       
openSUSE Leap 42.1 Y N  
openSUSE Leap 42.2 Y N  
openSUSE Leap 42.3 Y N  
openSUSE Leap 15 Y N  
       
Debian 8 Y Y You may have to install sudo.
Debian 9 Y Y You may have to install sudo, curl and dirmngr.
       
Ubuntu 14.04 Y Y Screenshot verification is unsupported on kernel 3.13.0-65
Ubuntu 16.04 Y Y  
Ubuntu 18.04 Y Y  


Datto provides best-effort support only for custom distributions that are based on a supported OS distribution. 

Because custom distributions cannot be tested by Datto, functionality or support for them cannot be guaranteed.

Perform regular end-to-end backup and local & cloud virtualization tests to confirm that the variations in your custom distribution do not interfere with Datto product functionality.

If you have a request to support any other distribution, please put in a feature request on our Community Forum.

Warnings

  • The Datto Linux Agent does not currently support HIR for Linux EFI. Due to this limitation, screenshots, HIR, and Bare Metal Restore for EFI Linux agents are not supported.
  • The Datto solution can back up multiple types of disk sector schemes. The process writes an image-based backup to a file, which is 512 bytes per physical sector. While rare, certain software which relies on advanced formats (such as 4K) may have issues with the sector size change. Datto recommends performing regular DR tests to ensure that all required applications function as expected in our virtualized environments.
  • Due to their mobile nature, Datto does not endorse or support backing up laptops. Laptops must be inside the LAN, and not on a wireless network, to perform backups in a timely manner. Attempts to back up laptops are at your own discretion.
  • Because of this, and due to the wide range of touchpad drivers, custom drivers, and hardware configurations available for both laptops and all-in-one workstations, restoration support for these platforms is 'best-effort' only.
  • Datto does not support virtualizing disk images stored in Network Attached Storage volumes for any distribution.
  • Datto does not support backing up Docker containers. We can back up the host and container data.

System Requirements

To run the Datto Linux Agent, the protected machine must meet these requirements:

General System Requirements

  • 64 bit OS
  • Linux kernel version 2.6.32 or newer, excluding the following incompatible kernels:
    • 3.13.0-65
  • 1 GB or more of RAM
  • 10% free space (up to 10 GB) per protected volume
  • Internet connection
  • Corresponding Kernel Development package
  • RPM-based systems require a kernel-devel package to match the running kernel
    • VMware vCenter Server is unsupported.
  • The Datto Linux Agent supports ext2, ext3, ext4, and xfs filesystems.
    • Other file systems may work, but they are not supported and may result in large incremental backups.

Operating System-Specific Requirements

In addition to the requirements listed above, the following distributions of Linux carry additional system requirements:

Debian-Specific Requirements

  • Debian-based systems require a kernel-headers package to match the running kernel.

CentOS5-Specific Requirements

  • These systems require, at minimum, openssl-0.9.8e-22 to be installed. Otherwise, the agent will fail with a Certificate information not found error. You can download and install the proper package from vault.centos.org. by running the following commands:
wget http://vault.centos.org/5.8/updates/x86_64/RPMS/openssl-0.9.8e-22.el5_8.4.x86_64.rpm
yum localinstall openssl-0.9.8e-22.el5_8.4.x86_64.rpm

RHEL 5-Specific Requirements
Contact RHN (Red Hat Network) support to retrieve the prerequisite packages necessary to install the Datto Linux Agent.

Networking Requirements

See the SIRIS, ALTO & DNAS Networking and Bandwidth Requirements article for full networking requirements. At minimum, the protected machine must have Internet access, and be able to resolve the following addresses for the initial installation of the Datto Linux Agent:

TCP ports 25567 and 3260 must be open between the Datto appliance and the protected system. To check port connectivity, run the following command on the protected system:

nc -v <ip address of Datto appliance> <port number>

A successful connection will look like this:

On RHEL/CentOS:

[root@msmith-centos7 ~]# nc -v 10.72.68.84 3260
Ncat: Version 6.40 ( http://nmap.org/ncat )
Ncat: Connected to 10.72.68.84:3260.

On Ubuntu/Debian:

michael@MSmith-LinuxPC ~ $ nc -zv 10.72.68.247 3260
Connection to 10.72.68.247 3260 port [tcp/iscsi-target] succeeded!

Figure 1 illustrates the data flow for the Datto Linux Agent.

DLAD_dataflow_1_2_2018.pngFigure 1: Datto Linux Agent logical data flow (click for larger image) 

Installation

To ensure an issue-free setup experience, follow the steps in the Installing the Datto Linux Agent article to deploy the agent to your production machine.

FAQ

Why is the Linux agent important to Datto partners?
With the Linux agent, partners can use existing Datto devices to protect additional devices on their client’s network, all at no additional cost. This is added value that MSPs can pass directly on to their clients immediately. Also, Datto partners now have the capability to deliver business continuity in environments where they weren’t able to compete in the past - or where they had to rely on manual workarounds or offer only file-level protection.

What part of the Linux agent did Datto make open source? Why did it open source this?
Datto made three components of the agent open source:

1. The driver
2. A library for the agent to interact with the driver
3. Several utilities, the most important of which is a utility to compare incremental backups.

Making these components open source is a big win for partners because community involvement means support for more Linux distros, more quickly, plus faster maintenance and improvements for supported distros.

How does the licensing work?
Like our other agent offerings, the Linux agent is offered with unlimited licenses - back up as many Linux agents to your Datto device as you wish. Note: ALTO 2 devices are still limited to 2 or 4 licenses depending on the model, regardless of whether the agents are Windows/Linux. First generation ALTO devices do not support Linux agents.

Can you encrypt Linux agents?
Yes.

Can I protect a mix of Linux agents and Windows agents on the same Datto appliance?
Yes.

What Datto appliances work with the Linux agent?
The Linux agent works with all SIRIS ALTO, and SIRIS Imaged devices.

Do protected Linux machines get the same restore options as Windows machines?
Yes; however Rapid Rollback is not currently available for Linux machines.

Do local or cloud virtualization work any differently for Linux machines?
Cloud virtualization works exactly the same for Linux agents as it does for Windows ones.

Additional Resources


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