Install Backup Agent on Debian and Ubuntu manually

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h2. Option 1 - Install the Backup Agent using APT

Configure an APT repository on Debian and Ubuntu to install the Backup Agent using apt. This repository also helps to manage upgrades of the Backup Agent in the future. For more information about upgrading the Backup Agent, see [ServerBackup:Upgrade Backup Agent for Linux].

*To configure an APT repository*:
# Modify the {{/etc/apt/sources.list}} to include the R1Soft repository, and then download the R1Soft {{apt gpg}} key using a command similar to the following:

h3. Download Backup Agent

For more information about downloading the Backup Agent, see [ServerBackup:Obtain Linux Backup Agent].

h3. Make sure you can unzip the download

Most Linux distributions come with the *unzip* utility pre-installed.

*To determine if you have the unzip utility*:

Run the following command:

{code}which unzip{code}

The system returns output similar to the following:

{code}which unzip

*To install unzip on Debian or Ubuntu*:

Execute the following command:

Use the {{unzip}} command to extract the files.

{note:title=Notice}You must be a Linux root user to install the Backup Agent.
{note}

The archive extracted contains two folders: one with {{.deb}} packages (in our case, "*deb-linux64*") and one with {{.rpm}} packages ("*rpm-linux64*"). If you are installing on Debian or Ubuntu, choose the folder with {{.deb}} packages.

Each folder contains a set of the Backup Agent components:

* {{serverbackup-setup}}
* {{serverbackup-agent}}
* {{serverbackup-enterprise-agent}}

Server Backup Device Driver is a proprietary, loadable Linux kernel module distributed by R1Soft. It is loadable at run-time without restarting Linux, and you do *not* need to recompile your Linux kernel to use it. R1Soft does not provide pre-built modules for the popular kernels, so you must compile the module from source.
{note:title=Notice}You need to have loadable modules enabled as a feature in your kernel. This is an advanced feature on all popular Linux distributions.
{note}

h4. 1. Compiling Server Backup kernel module against kernel headers

You must compile the kernel module using the kernel headers. The program {{serverbackup-setup}} obtains all the information needed to compile a module from your running kernel.

In order for kernel module compilation to work, you should have Internet connectivity directly from the Linux server you are installing the Backup Agent on, to TCP port HTTPS (443), on the host {{krnlbld.r1soft.com}}.

You can test connectivity with the following command (this may take a minute):

{info}

h4. 3. Build Server Backup kernel module online (direct Internet connection to R1Soft build server)

To attempt to build the kernel module, run the following command (this may take several minutes):

Use '/etc/init.d/cdp-agent restart' to load the new driver{code}

h4. 4. Build the Server Backup kernel module offline (without direct Internet connection to R1Soft build server)

{code}serverbackup-setup --no-binary --tarball-only /tmp/kernel-headers.tar.gz{code}
After running this command, the system displays output similar to the following:
{code}Gathering kernel information
Gathering kernel information complete.
Creating kernel headers package
Checking '/tmp/r1soft-cki.1353084109' for kernel headers
Found headers in '/tmp/r1soft-cki.1353084109'
Compressing...
Header package created '/tmp/kernel-headers.tar.gz'

* Copy the generated {{tar.gz}} file to a computer with Internet access.
* Go to [https://krnlbld.r1soft.com/] and upload the {{.tar.gz}} file to build a kernel module.
* After the build, download a kernel module.
* Copy this module to your Linux Server and place in the folder {{/lib/modules/r1soft}}.