TurnKey Linux Virtual Appliance Library
|Source model||Open source|
|Supported platforms||IA-32, X86-64|
|Kernel type||Monolithic (Linux)|
|License||Free software licenses|
The Turnkey Linux Virtual Appliance Library is an open source project developing a free virtual appliance library of pre-packaged servers based on Debian (previous versions based on Ubuntu) that can be deployed on virtual machines, in cloud computing infrastructures or installed in physical computers.
Each virtual appliance is a ready-to-use solution that's optimized for ease of use in server-type usage scenarios. Each appliance is designed to "just work" with little to no configuration required.
The project currently maintains over 100+ virtual appliances, which are packaged in multiple build formats:
- Amazon Machine Image: provisioned on-demand via the Amazon Elastic Compute Cloud.
- Virtual appliance: a ready-to-run Virtual Machine with optimized builds available for OpenStack, OVF, OpenVZ, Xen, LXC and Docker. Does not require installation. TKL OVZ appliances are also available in Proxmox VE with direct download from within the PVE WebUI (via TKL mod for PVE v1.x  or by default from PVE v2.0 on. Likewise, TKL OVZ templates are also available for download and deployment from within OpenNode's interface.
- Installable Live CD: an ISO image which installs on both bare metal (I.e., a non-virtualized physical machine) and virtual machines, including VMware, Xen, VirtualBox, and KVM. This image can also run live in non-persistent demo mode. Future ISO releases of TKL will be hybrid ISOs also allowing writing to USB stick.
Founded by engineers of an Israeli startup, the project was conceived in mid-2008 as a community-oriented open source project that would focus on helping users piece together turnkey solutions from open source components in the largest Linux distributions. According to one of TurnKey Linux's co-founders, the project was in part inspired by a desire to provide open source alternatives to proprietary virtual appliance vendors that would be aligned with user interests and could engage the community.
The project launched in September 2008 with three prototype appliances for Drupal, Joomla and LAMP, based on the Ubuntu 8.04.1 build. In the following months usability was improved and a dozen additional appliances were released including Ruby on Rails, MediaWiki and Django.
In October 2009, the project released 40 appliances based on Ubuntu 8.04.3 including 25 new additions to the virtual appliance library. The release included support for Amazon Elastic Compute Cloud, and a new Virtual Machine image format with OVF support.
Turnkey Linux was nominated for the SourceForge February 2012 Project of the Month
In August 2012, version 12.0 was released with the library increased to include over 100 appliances. This release also marked a move away from Ubuntu as the underlying Operating System to Debian 6.0 (aka Squeeze). This move was cited as being for various reasons, particularly security.
Early June 2013 saw a significant change of tack with the version 12.1 update release; built with the new "TKLDev" open build infrastructure. This release also included the first X86-64 builds. Later that same month, the Turnkey Linux custom application code was moved to GitHub which also included a tracker for appliances bug reports. As promised, in mid July Turnkey Linux released their image building appliance (TKLDev) as well as an additional separate GitHub account to house all the appliance specific code (used by TKLDev to build the appliances).
TurnKey's virtual appliances are a series of "stripped down" versions of Debian (versions previous to v12.0 based on Ubuntu.) To this they add the TurnKey Core, which includes all the common features for the project's virtual appliances, including:
- di-live: a live installer, derived from debian-installer.
- A configuration console: developed in Python for the project to allow users to perform basic configuration tasks (for example, networking configuration, reboots)
- An automatic mechanism that installs security patches on a daily basis.
- Web administration interface based on Webmin which includes a selection of generic add-on control and configuration modules.
- TKLBAM (TurnKey Linux Backup And Migration) - a custom TKL backup/migration application/service that uses Duplicity as a backend. By default TKLBAM uses Amazon S3 for storage, but can also be configured to use any other storage medium supported by Duplicity. As of version 1.4 TKLBAM is available for non-TKL Linux OS.
The TurnKey Core has a footprint of approximately 110 MB, and is available as a separate download. Application software is installed on top of the Core, which typically increases the size of a virtual appliance up to approximately 160 MB. By downloading and installing the appliance package to the hard drive, it is intended by the developers that administrators would gain an easy method of setting up a dedicated server.
New software appliances, or customised appliances can be developed by forking the appropriate appliance build code on GitHub and then built using TKLDev. Additionally appliances can also be customized and extended using TKLPatch, a simple appliance modification mechanism.
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- "Introducing TurnKey Linux Appliance Library". OpenNode Cld Platform. 18. October 2013. Retrieved 8 February 2014.
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- 2009 BOSSie for Open Source Platforms and Middleware, see Slide 7
- "SourceForge.net: VOTE for the February Project Of The Month". SourceForge.net. 10 January 2012. Retrieved 15 April 2012.
- "Announcing TurnKey Linux 12.0: 100+ ready-to-use solutions". Liraz Siri. 30 August 2012. Retrieved 13 November 2012.
- "TurnKey Linux offers 64-bit server apps on Amazon cloud". Steven J. Vaughan-Nichols. 11 June 2013. Retrieved 16 February 2014.
- "TurnKey moves to GitHub". Alon Swartz. 28 June 2013. Retrieved 8 February 2014.
- "Introducing TKLDev - Turnkey's appliance development and build system in a box". Alon Swartz. 18 July 2013. Retrieved 8 February 2014.
- "TurnKey 13 out, TKLBAM 1.4 now backup/restores any Linux system". Liraz Siri. 21 November 2013. Retrieved 8 February 2014.
- "TurnKey Linux Core - Common Base Appliance". TurnKey Linux. Retrieved March 23, 2009.
- TKLBAM - Smart automated backup and restore
- "Open source server appliances ship". LinuxDevices.com. March 9, 2009. Archived from the original on 27 January 2013. Retrieved March 23, 2009.
- Turnkey Linux Appliance Build code repository
- TKLDev - Appliance Build Engine
- TKLPatch - a simple appliance customization mechanism
- Proffitt, Brian (February 15, 2010). "Virtual Appliances Offer Fast Sandboxes, Production Environments". ITWorld. Retrieved 24 February 2010.