SUMMARY
Linux Client / Agent
ISSUE
Note: The instructions in this article are for agent versions earlier than 7.4. Installer enhancements included in the 7.4 release greatly simplify the installation process by reducing the need to locate dependencies. The 7.4 agent is available in 32- and 64-bit versions. For details, see Installing and updating the Linux agent.
Purpose
Add a Linux backup client to the Unitrends backup system.
Description
Add protection for a Linux client to the Unitrends backup system by installing
the Linux backup agent and required dependencies on the Linux client system,
and registering that client with the Unitrends appliance.
Cause
The Unitrends Linux backup agent and its required dependencies must be installed on the Linux client system, and the
Linux client system must be registered with the Unitrends backup appliance.
Dependencies
Xinetd
The internet super server, xinetd, is required by the Unitrends Linux backup
agent. Many Linux distributions do not install xinetd by default.
32-bit Shared Libraries
The Unitrends agent also requires certain 32-bit shared libraries to complete installation and execute properly.
Many 64-bit Linux installations do not, by default, include these libraries. Some minimal 32-bit installations may also
be missing some of these libraries.
Resolution
Note: All commands detailed in this document should be executed as the root,
or super user.
Install Required Dependencies
Redhat based distributions
On Redhat based systems, such as RHEL, CentOS, Scientific Linux, etc., do
yum -y install xinetd
chkconfig xinetd on
service xinetd start
yum -y install libattr.i686 libcom_err.i686 krb5-devel.i686 libmenu.i686 ncurses-libs.i686 zlib-devel.i686 libxml2.i686
To locate a package which contains a missing library/file, execute the following command:
yum provides */libraryname
Debian based distributions
On Debian based systems, such as Debian, Ubuntu, Linux Mint, etc., do
apt-get install xinetd
apt-get install ia32-libs
If ia32-libs responds unable to install, you may need to enable 32bit platform support:
dpkg --add-architecture i386
apt-get update
apt-get install ia32-libs
May also require in some cases:
apt-get install cifs-utils
apt-get install lib32ncurses5
To locate any additional packages the installer requests dependencies be met for which contains a missing library/file, execute the following command:
apt-get install apt-file
apt-file update
apt-file search libraryname
SUSE based distributions
NOTE: libkeyutils1 is missing from SLES 10 and cannot run the latest Linux agent.
The 4.1.2 agent must be used instead and can be downloaded here: ftp://ftp.unitrends.com/bp/4.1.2/OES/oes_cnt
On Novell based systems, such as OES, and OpenSuSE, do
zypper install xinetd
zypper install -y libattr1-32bit libcom_err2-32bit krb5-32bit libxml2-32bit zlib-32bit
To locate a package which contains a missing library/file, execute the following command:
zypper what-provides libraryname
If zypper is not found, you may install the packages via yast2.
yast2 -i package_name
You may search for a package with yast2 by entering the yast2 menu:
yast2 --ncurses
Within this menu, select Software, then Software Management. From here you may search for, and install packages.
Note:
On some 64-bit systems, such as RHEL 6, 64-bit and 32-bit package version numbers may differ.
This will cause a conflict when installing the 32-bit package. The quickest solution is to downgrade the 64-bit
package so that the installed version coincides with that of the 32-bit package. Another possible solution
would be to obtain the latest stable source RPM from Redhat's website and build 32-bit and 64-bit rpms.
Download the Backup Agent
Download the current Linux agent installer from
http://ftp.unitrends.com/bp/latest_build/Linux/lnx32_cnt.run
If wget or curl are installed on the Linux system, the backup agent may
downloaded via the Linux command line with either of the following commands:
wget http://ftp.unitrends.com/bp/latest_build/Linux/lnx32_cnt.run
curl -O http://ftp.unitrends.com/bp/latest_build/Linux/lnx32_cnt.run
Make the installer binary executable
Set the executable bit on the file.
chmod +x lnx32_cnt.run
Install the Backup Agent
Please read the paragraph below before launching the installer binary:
You will be given the opportunity to enter the directory where you would like to
install the software. Press enter to accept the default installation directory
(/usr/bp).
If it does not exist, you will be asked if you wish to create it, enter y to continue.
There will be an option to enter an email address for the computer’s backup
summaries. Typically, backups will be launched using schedules on the system.
Schedule reports will be sent from the system. Enter none to disable reports
directly from the Linux client.
You will be asked to enter the hostname of the system. This name should be
resolvable using DNS or the /etc/hosts file.
You will be asked if the client and the server (backup system) are separated by a
firewall. If using a low, medium, or high security setting on the system, enter y
when answering this question. Saying yes will force data communication between
the system and the client to use port 1745.
The client can now be registered on the Unitrends backup appliance.
To launch the installer binary, execute the following command, in the same
directory where the installer resides:
./lnx32_cnt.run
To register a Linux client
1 From the backup system, select Settings > Clients, Networking, and Notifications
> Clients.
2 Click Add Client.
3 Enter the name of the client in the Client/Server name field.
4 Click Confirm.
Please refer to Chapter 12, Linux Protection, in the Administrator's guide for more information
concerning Linux protection. The administrator's guide may be found in PDF or
html format at
http://www.unitrends.com/support/customer-care-center/technical-documents.html