The tutorial describes installation steps for Clonezilla Server Edition (SE) on Ubuntu 16.04.1 LTS using a Bash script. Clonezilla is OpenSource Cloning System (OCS) and it is a partition and disk imaging/cloning program . It helps you to do system deployment, bare metal backup and recovery. Two types of Clonezilla are available, Clonezilla live and Clonezilla SE (server edition).
Clonezilla live is suitable for single machine backup and restore. Clonezilla SE is for massive deployment because it can clone many computers simultaneously. Clonezilla saves and restores only used blocks in the hard disk. It decreases time and saves the hard disk space and increases the clone efficiency.
Clonezilla is a part of DRBL (Diskless Remote Boot in Linux) which provides a diskless environment for client machines. Therefore we need to install and configure DRBL server first. I created DRBL deployment script deploy_drbl.sh that helps you to install DRBL and configure server on Ubuntu with a single Ethernet card. You have to provide only the name of Ethernet interface and the script creates virtual interface for you based on your physical interface. It also downloads a DRBL project public key, download and install drbl package from repository. The script starts interactive Bash and Perl scripts that come with drbl package. It starts them in this order:
- drblsrv - prepares files for PXE client and generates PXE menu
- drblpush - configures DNS, clients' hostname, Ethernet card, collects MAC addresses of clients, configures and starts DHCP server, diskless services and Clonezilla mode, PXE password, grephical/text boot menu, NAT services for clients and firewall rules
- dcs - DRBL utility to switch the mode for clients
Here is a version of packages installed with DRBL.
Deploying DRBL Server
1. Starting Script
The script deploy_drbl.sh must be started with root privileges. Once you login to root account with sudo su command, assign execute privileges to the script.
$ sudo su
# chmod +x ./deploy_drbl.sh
Now enter the name of Ethernet interface which is connected to the Internet, e.g. eth0. The script creates a new virtual interface adding suffix 100 to the name of your Ethernet interface e.g. eth0:100. It also configures IP address 192.168.112.200/24 on your virtual interface. If you want to configure different suffix or IP address/mask on the virtual interface, just change a value of variables ipaddress, mask and suffix in the script. The script installs a package drbl from repository drbl testing.
Note: The script deploy_drbl.sh requires a working connection to the Internet in order to install DRBL server. The script sets only an IP address and a mask on the virtual interface. It is your job to configure a correct IP address/mask on the physical interface. You also need to configure default route and add DNS server. Here are my network settings /etc/network/interfaces.
2. DRBL Server Installation
The scripts deploy_drbl.sh automatically starts a script drblsrv with a parameter -i . The script drbl is responsible for installation of DRBL server. Installation is interactive so you must provide answers for questions - either y or n. If the letter is capital, it is a default choice and you can press Enter or type particular letter to select this choice.
2.1 Installation of Network Images
Picture 1 - Installation of Boot Images via Network
We do not need any boot images so type N.
2.2 Serial Console Output
Picture 2 - Serial Console Output on Client Computer
We do not want to use the serial console output on the client computers so type N.
2.3 Operating System Upgrade
Picture 3 - Operating System Upgrade
We do not want to upgrade our OS - Ubuntu 16.04.1 so type N.
2.4 Selection of Kernel Image
Picture 4 - Selecting Kernel Image for Clients
Choose option 1 - Ubuntu kernel from DRBL server.
3. Configure Clonezilla
The scripts deploy_drbl.sh automatically starts a script drblpush with a parameter -i (interactive mode).
3.1 DNS Domain
Picture 5 - DNS Domain
Press Enter key to configure default drbl.org domain.
3.2 NISP/YP Domain
Picture 6 - NISP/YP Domain
Again, press Enter key to configure default penguinzilla domain name.
3.3 Client Hostname Prefix
Picture 7 - Client Hostname
We want our client to keep default hostname prefix so press Enter.
3.4 Ethernet Port
Picture 8 - Ethernet Port
In this menu we select a network interface that is connected to the Internet (not used for DRBL connection). In our case it is enp0s3 port. Press Enter to choose a default option enp0s3.
3.5 Collecting MAC Addresses of Clients
Picture 9 - Collecting MAC Addresses of Clients
We do not want to assign the same IP addresses to the clients from DHCP server thus we do not need to collect MAC addresses of the clients. Type N or just press Enter.
3.6 Same IP address for Clients
Picture 10 - Same IP address for Clients
Press Enter to reject the offer to configure the same IP addresses for clients.
3.7 DHCP Server
Picture 11 - DHCP Server
Now we configure a DHCP server running on the interface enp0s3:100 and providing IP addresses for clients. Enter an initial IP address from the range and the number of clients in your network. Then just confirm the DHCP range with Enter key or type Y.
3.8 Diskless Linux Services
Picture 12 - Diskless Linux Service
We do not need to provide diskless Linux service to clients so type option 2.
3.9 Clonezilla Modes
Picture 13 - Clonezilla Modes
Type 0 to configure full Clonezilla mode.
3.10 Directory for Storing Images
Picture 14 - Directory for Saving Saved Images
Press Enter to configure a default directory /home/partimg/ for storing saved images.
3.11 PXE Linux Password for Clients
Picture 15 - PXE Linux Password for Clients
Type y if you want to configure a password for clients. The chosen password can be changed or disabled anytime by drbl-pxelinux-passwd utility.
3.12 Graphical Background for PXE Menu
Picture 16 - Graphical Background for PXE Menu
Type y if you want to boot your clients with graphical PXE Linux menu.
3.13 NAT Services for Clients
Picture 17 - NAT Services for Clients
We do not need to provide Internet to clients so type n.
3.14 Firewall Rules
Picture 18 - Changing Firewall Rules
Press Enter or type y to let DRBL server to change firewall rules.
4. Start Clonezilla Server
The scripts deploy_drbl.sh automatically starts a script dcs which starts Clonezilla.
4.1 Client Selection
Picture 19 - Selecting Clients
We can either select all clients or an individual client based on its IP or MAC address. Select the first option - All .
4.2 Start Clonezilla Mode
Picture 20 - Starting Clonezilla Mode
Select an option clonezilla-start to start clonezilla mode.
4.3 Beginner Mode
Picture 21 - Beginner Mode
Select an option Beginner which accepts the default options.
4.4 Select-in-Client Clonezilla Mode
Picture 22 - Select-in-Client Clonezilla Mode
Select an option select-in-client. This option allows you to select either to restore or save the image on client.
4.5 Clonezilla Advanced Extra Parameters
Picture 23 - Clonezilla Advanced Extra Parameters
Select an option -y1 default Clonezilla.
4.6 Shutdown Clients
Picture 24 - Shutdown Clients When Cloning is Finished
Select an option -p poweroff. Clients automatically power off once cloning is finished. When dcs script finishes, you can see the following command in your terminal window.
drbl-ocs -b -l en_US.UTF-8 -y1 -p poweroff select_in_client
-b - run program in batch mode, i.e without any prompt
-l - language en-US.UTF-8
-y1 - clonezilla server as restore server
-p - shutdown client when cloning/restoring finishes
select_in_client - client chooses either to clone or restore
You can put the command inside the script /etc/init/clone.conf to start Clonezilla automatically after boot. To clone clients using multicast in order to speed up cloning process, use the following command.
drbl-ocs -b -g auto -e1 auto -e2 -x -r -j2 -sc0 -p poweroff --time-to-wait 30 -l en_US.UTF-8 startdisk multicast_restore core_linux sda
All options are explained here.
Here are the problems I noticed during writing the tutorial.
5.1 Client Does Not Get IP Address
Check if DHCP service is running with the command:
$ ps -ef | grep dhcpd | grep -v grep
Picture 25 - Checking DHCP Service
If you cannot see the output above, DHCP service is not running. Check the service status with the command:
$ systemctl status isc-dhcp-server
Picture 26 - DHCP Service Disabled and Not Active
We can see that DHCP service is disabled and not active. We can enable it with the command:
$ systemctl enable isc-dhcp-server
Picture 27 - DHCP Service Enabled But Not Active
DHCP service is enabled but not active. Activate the service with the command:
$ systemctl start isc-dhcp-server
Picture 28 - DHCP Service Enabled and Active
You can check DHCP messages in /var/log/syslog file.
Picture 29 - Obtaining IP Address for Client
Obtaining IP address 192.168.112.1 for client with a MAC address 09:00:27:93:43:bb via the interface enp0s3.