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Moving TurnKeyLinux.org from Drupal to Hugo
TurnKeyLinux.org has accumulated a lot since the first Drupal version went online: appliance pages, documentation, release notes, screenshots, FAQs, blog posts, taxonomy terms and …
Topic
development
110 matching pages
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TurnKey 19 is getting close: the move to Debian Trixie
TurnKey 19, based on Debian 13 “Trixie”, is getting close. Development has moved beyond changing a version number. The base system, installer, repository configuration and …
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v18.0 Stable Release #6 - 10 Newly Updated ISOs, Hub Builds & Proxmox/LXC builds
The TKL team is thrilled to unveil 10 fresh updates to our appliance lineup! See here for all v18.x announcements. These 10 updated apps are available now on the TurnKey …
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v18.0 Stable Release #5 - 20 Updated ISOs & Hub Builds - Proxmox/LXC builds
Finally, following the announcement last week, we're back again with another batch of updated appliances - 20 to announce this time! See here for all v18.x announcements. These 20 …
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v18.0 Stable Release #4 - 10 Updated ISOs & Hub Builds - Proxmox/LXC builds
We're thrilled to announce the forth stable release of version 18.0, bringing another 10 updated appliances, including updated ISOs and Hub builds, with Proxmox/LXC support builds …
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v18.0 Stable Release #3 - 10 Updated ISOs & Hub Builds - Proxmox/LXC builds
We have the 3rd v18.0 stable release batch ready to roll (see all v18.x related announcements here). This batch brings the total number of v18.0 stable releases so far to 23! As …
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v18.0 Stable Release #2 - 11 Updated ISOs & Hub Builds
We have the 2nd v18.0 stable release batch ready to roll (see all v18.x related announcements here). This batch brings the total number of v18.0 stable releases so far to lucky …
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Core & TKLDev v18.0 Stable Release
Happy to announce the stable release of Turnkey v18.0. Took a little longer than I had hoped and there are only two this time. Regardless, we've finally made it to the stable …
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Core & TKLDev v18.0 Release Candidates are LIVE!!
I'm happy to announce the pre-release of the next major version of TurnKey GNU/Linux. The first v18.0 Release Candidates of Core and TKLDev are ready for download, inspection and …
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v17.x Stable Release #6 - 7 More Updated ISOs & Hub Builds, Plus Bug Fixes
We have the 6th (and hopefully final) release for 17.x (see previous v17.x announcements here if you wish). There may be some stragglers, but we're fairly close to …
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v17.1 Stable Release #5 - 17 More Updated & Buggfixed ISOs, Promxox & Hub Builds
We have the 5th release for 17.1 (see previous v17.x announcements here if you wish). We're fairly close to finishing the initial v17.x release, with only 4 appliances …
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v17.1 Stable Release #4 - 8 More Updated ISOs & Hub Builds, Plus Bug Fixes
I hope everyone had a happy holiday season; Turnkey associates have definitely been busy over the holidays. We have a 4th installment of stable v17.1 appliances and the 7th …
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How to create new sftp user with access to /var/www
In what appears to be the new way I do things (i.e. here and here), following a question from TurnKey Hub user Rob, I'm posting this "tutorial" as a blog post. Via Hub support, …
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Install newer (or latest) PostgreSQL on TurnKey
TurnKey Hub user Vishal recently asked about installing PostgreSQL v14+ on TurnKey. He noted that he was interested in Postgres 14 or higher because of the new IVM extension …
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v17.1 Stable Release #3 - 14 more ISOs & Hub builds
This will be technically the 3rd installment of stable v17.1 appliances and the 6th release for 17.x (see the first 5 announcements here if you wish). As previously noted, all of …
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v17.1 Stable Release #2 - 24 more ISOs, Hub builds and Proxmox/LXC
After a bit of a delay - due to other competing priorities; such as our webserver dying - the v17.x release continues. As per previous updates all these appliances are being built …
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Hacking on Debian packages - the quick and dirty way
TurnKey user Ed Carp was recently trying to install TKLBAM on Linux Mint 20.3/Una (which is based on Ubuntu 20.04/Focal). Despite my best efforts, he kept hitting issue after …
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v17.1 - The v17.x release continues with bugfixed builds
After a bit of hiccup, I am pleased to be back to announce the ongoing release of v17.x appliances. Because of the bug, the previously released v17.0 appliances have been patched …
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Bug Alert! v17.0 security updates kernel. Reboot results in kernel panic.
2022-05-17 Update: All affected appliances have now been bugfixed and rebuilt as v17.1. The v17.x release will continue, with all new appliances to be released as v17.1. As first …
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Do you love TurnKey? Have a few spare cycles and want to help out?
2022-05-17 Update: Please note that due to a bug, all v17.0 appliances have now been bugfixed and rebuilt as v17.1. The v17.x release will continue, with all new appliances to be …
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v17.0 Stable Release #3 - 15 more ISOs & Hub builds
2022-05-17 Update: All affected appliances have now been bugfixed and rebuilt as v17.1. The v17.x release will continue, with all new appliances to be released as v17.1. Important …
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v17.0 Stable Release #2 - ten more ISOs & Hub builds - Proxmox/LXC in development
2022-05-17 Update: All affected appliances have now been bugfixed and rebuilt as v17.1. The v17.x release will continue, with all new appliances to be released as v17.1. Important …
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Core & TKLDev v17.0 Stable Release & "preliminary" RPi3/4 builds
2022-05-17 Update: All affected appliances have now been bugfixed and rebuilt as v17.1. The v17.x release will continue, with all new appliances to be released as v17.1. Important …
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Core & TKLDev v17.0 Release Candidates - ready for battletesting
Update 2022-04-13: Please see the v17.0 stable release announcement for details about the stable v17.0 Core & TKLDev releases. Drum roll please... I'm proud to announce the …
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v16.0 Stable Release #12 - 9 new appliances & 1 revived (ISOs, Hub, VM & Proxmox builds)
I'm back with another v16.x update. I anticipate that this will be the last v16.0 appliances. I hope to start looking at a v16.1 update/rebuild soon after the holiday period. This …
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v16.0 Stable Release #11 - 7 updated ISOs, Hub, VM & Proxmox builds
I'm finally back with most of the outstanding v16 initial appliance release. This time it's 7 apps updated to v16.0. Just like the previous batch, this next instalment of v16.0 …
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v16.0 Stable Release #10 - 7 updated ISOs, Hub, VM & Proxmox builds
Update 2020-10-19: Please see the eleventh instalment of updated appliances. I'm back with some more updated appliances. This time it's 7 apps updated to v16.0. Just like the …
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v16.0 Stable Release #9 - 7 updated ISOs, Hub, VM & Proxmox builds
Update 2020-08-31: Please see the tenth instalment of updated appliances. Update 2020-10-19: Please see the eleventh instalment of updated appliances. I'm back with some more …
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v16.0 Stable Release #8 - 12 updated ISOs, Hub, VM & Proxmox builds
Update 2020-08-27: Please see the ninth instalment of updated appliances. Update 2020-08-31: Please see the tenth instalment of updated appliances. Update 2020-10-19: Please see …
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v16.0 Stable Release #7 - 10 updated ISOs, Hub, VM & Proxmox builds
Update 2020-07-27: Please see the eighth instalment of updated appliances. Update 2020-08-27: Please see the ninth instalment of updated appliances. Update 2020-08-31: Please see …
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v16.0 Stable Release #6 - 7 more updated ISOs, Hub, VM & Proxmox builds + rebuilt VMs
Update 2020-07-16: Please see the seventh instalment of updated appliances. Update 2020-07-27: Please see the eighth instalment of updated appliances. Update 2020-08-27: Please …
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v16.0 Stable Release #5 - Another 10x ISOs, Hub, VM & Proxmox builds
Update 2020-06-29: Please see the sixth instalment of updated appliances. Update 2020-07-16: Please see the seventh instalment of updated appliances. Update 2020-07-27: Please see …
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v16.0 Stable Release #4 - 8 more ISOs, Hub & Proxmox/LXC builds; plus VM builds
Update 2020-06-09: Please see the fifth instalment of updated appliances. Update 2020-06-29: Please see the sixth instalment of updated appliances. Update 2020-07-16: Please see …
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v16.0 Stable Release #3 - Another 10 ISOs, Hub & Proxmox/LXC builds
Update 2020-05-25: Please see the forth instalment of updated appliances. Update 2020-06-09: Please see the fifth instalment of updated appliances. Update 2020-06-29: Please see …
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v16.0 Stable Release #2 - 10 more ISOs, Hub & Proxmox/LXC builds
Update 2020-05-20: Please see the third instalment of updated appliances. Update 2020-05-25: Please see the forth instalment of updated appliances. Update 2020-06-09: Please see …
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v16.0 Stable Release #1 - 10 x ISOs, Hub & Proxmox/LXC builds
Update 2020-05-15: Please see the second instalment of updated appliances. Update 2020-05-20: Please see the third instalment of updated appliances. Update 2020-05-25: Please see …
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Core & TKLDev v16.0 Release Candidates - now available for download!
Update 2020-05-04: We've finally published Core and TKLDev as stable releases (v16.0); along with a few others. The RC releases noted here are no longer available for download. …
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Core v16.0 RC (Release Candidate) is on the way...
Update 2020-05-04: We've finally published our first batch of 10 v16.0 appliances. Please see the full announcement for details. Update 2020-03-10: v16.0rc1 ISOs of both Core and …
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v15.1 Appliance Updates and Bugfixes - 70+ Rebuilt and Updated Apps
In the wake of the "mini-nightmare" (to quote a user) that was the Debian MariaDB auto removal fiasco; we're back with ~70 updated appliances (all the ones with MySQL/MariaDB). …
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v15.0 Stable Release #4 - final appliance roundup
I'm pleased to announce the 4th and final stage of the v15.0 release. This final instalment consists of 31 new, updated and/or bugfixed appliances. It follows release parts 1, 2 …
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v15.0 Stable Release #3 - 35 updated/new apps in all builds
UPDATE: Stage 4; the 4th and final instalment of v15.0, includes the remaining v15.0 appliances, plus a number of bugfixed and updated v15.0 apps - 31 in total. All appliances are …
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v15.0 Stable Release #2 - 47 OVAs, OpenStack and Xen builds
UPDATE: Stage 3 includes 35 additional appliances; including info on 3 new v15.0 appliances, plus other notes of interest. Stage 4; the 4th and final instalment of v15.0, includes …
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v15.0 Stable Release #1 - 47 ISOs including Core, LAMP and WordPress
UPDATE: Stage 2 includes OVA/VM, OpenStack and Xen. Docker and Proxmox/LXC builds published too. Stage 3 includes 35 additional appliances; including info on 3 new v15.0 …
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TurnKey v15.0 RC1 is LIVE!
UPDATE: Stage 1 of v15.0 stable release is now available. It includes 47 updated appliance ISOs. Stage 2 includes OVA/VM, OpenStack and Xen. Docker and Proxmox/LXC builds …
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v14.2 Release Update #5 - final updated appliances and wrapup
About 3 weeks since my last announcement, I am super excited to announce the final few v14.2 appliances! And the completion (almost) of the v14.2 release! Yay! So this will be the …
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v14.2 Release Update #4 - 17 more updated appliances and v14.2-update#3 optimized builds
This release update was a bit quicker! :) Barely 2 weeks since the last one, here comes another v14.2 update...! Today I'm announcing 17 more appliances updated to v14.2, as well …
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v14.2 Release Update #3 - 3 brand new appliances and 24 updated apps (ISO only; others coming)
Almost another month has passed since my v14.2 - update #2 announcement. I must say that this is taking longer than I'd hoped, but we're getting there. Today/Tonight (depending on …
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v14.2 Release Update #2 - 25 more apps, new OpenStack, OVA & VMDK
What!?! Another month (actually a month and a half) has gone by and we're only just announcing the next batch?! Well, I better get on with it then! Today I'm announcing 25 more …
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v14.2 Release Update #1 - 27 more appliances
Wow, has it really been almost a month since I announced v14.2 Core?! Looks like it has! Time flies when you're having fun I guess... :) I'm pleased to announce 27 new updated …
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v14.2 Core Release - Improvements to Confconsole, including easy Let's Encrypt SSL certs
Just shy of a year since our v14.1 release I am relieved to announce that Core v14.2 is finally ready for prime time! It's been a while in the making, but v14.2 Core is now …
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v14.1 Release - Bugfixes, Maintenance and More
About seven months after the release of v14.0 we are proud to announce the updated v14.1 release. All of the v14.1 appliances are available for immediate launch in the cloud via …
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systemd sysv init compatibility mode: how it works and troubleshooting when it breaks
systemd sysv init compatibility mode is magical. That is in the sense that it tries to handle compatibility with sysv init scripts while you are distracted looking somewhere else. …
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Python's timeless principles of good software
$ python -c 'import this' The Zen of Python, by Tim Peters Beautiful is better than ugly. Explicit is better than implicit. Simple is better than complex. Complex is better than …
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Bug hunting with the scientific method
I've never come across a problem I couldn't solve using the following technique / problem solving methodology, and I've come across some tough ones. …
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v14.0 stable release - Massive Community Effort!
Drum roll please... May I proudly introduce: The TurnKey Linux v14.0 release! A long time coming... Wow is it mid September already!? What has happened to the year?! To be honest …
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Marching towards v14.0 RC2
Update: v14.0 stable is available in all build types: OVA & VMDK, Proxmox, OpenNode & Docker (Proxmox build is somewhat generic LXC/OpenVZ container) and Xen & …
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How to build a TurnKey appliance ISO from source
[UPDATE:] This blog post has been converted to a Doc page and has had some updates since this post was published. For the upcoming v14.0 stable release, we are doing things a …
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TurnKey v14.0 RC1 is LIVE! (aka we need YOU!)
Update: v14.0 stable is available in all build types: OVA & VMDK, Proxmox, OpenNode & Docker (Proxmox build is somewhat generic LXC/OpenVZ container) and Xen & …
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Invalidating the disk cache on Linux
Here's a super easy way to invalidate the disk cache, which is useful for testing IO performance in the real world, where you can't rely on all of your reads being served up from …
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pyproject-pub: A simple Python project template
I hate repeating myself. It's boring. Life is too short. Like any self respecting hacker I will go out of my way to avoid it, even when I suspect it would cost me more to automate …
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Getting started with Python and Lisp
A few weeks ago I talked with a friend studying computer science who I discovered had never experienced the joy of programming with a high level language. Not only that but he …
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Why parallel programming is hard
Implementing Cloudtask took more time than I had planned due mainly to the challenges of parallel programming, which I hadn't done that much of before. Also, parallel programming …
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Parallelize - a simple yet powerful high-level interface to multiprocessing
When I was developing Cloudtask, I discovered none of the interfaces in the Python multiprocessing module were powerful enough for my needs so I had to roll my own. The result is …
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Three strikes - time to automate!
I caught myself today repeating a few basic operations by hand what seemed like a zillion times. Over and over again. I didn't really notice it at the time but it was really …
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My last Perl program - a Perl obfuscater that can eat its own tail
OK, I admit it. I used to program in Perl. And I liked it! My Perl programs were terse. If I could shave a line off, I did. In fact, I spent a non-trivial amount of time figuring …
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Python optimization principles and methodology
Methodology The basic methodology for optimization: Discover where you program is spending its time (hotspots vs coolspots) A good way to get an overview is to use the Python …
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4 simple software optimization tips
1) Always be experimenting! Trying to squeeze out more performance out of your program? Don't be afraid to experiment! In practice what that means is you setup small, simple …
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Transcend the Drupal documentation, use the source Luke!
During the first few months of my Drupal experience I looked for answers to any issues that came up first in the official documentation, then on Google. It's a big Drupal world …
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Pythonic attribute magic (property, customized attribute access)
Many languages encourage programmers to use a getter/setter pattern. Like this: instance.set_foo(value) print instance.get_foo() Many years ago, as a junior programmer still …
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Tips for the Object Oriented Programming novice
The following is written for programmers who don't really understand object oriented programming yet. They probably understand the language semantics, but don't really understand …
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Unix buffering delays output to stdout, ruins your day
Let's say you have the following program: cat>example.py<<'EOF' #!/usr/bin/python import time while True: print 'hello world' time.sleep(1) EOF chmod +x ./example.py If …
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Two simple ways a script can detect if it's online
I didn't want installation of one of TurnKey's components to freeze up too long if it was installed offline so I looked for a nice way to detect that without bringing in …
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configuring libresolv to timeout DNS queries to unreachable nameservers more quickly when offline
When I go offline I pull my network cable. This causes DNS queries to take forever to resolve. Actually 40 seconds but it feels like forever. I ran across this most recently when …
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StdTrap: a magical Pythonic mechanism for intercepting console output
As a programmer I believe less is more. Good code is small, simple and elegant and many times favorable to larger, noisier code that does the same. It's not just about aesthetics …
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How Foodsoft inspired me to rewrite the TKLDev documentation
A couple of weeks ago I was corresponding with @wvengen, a free software developer from the Netherlands who has been using TKLDev to package Foodsoft into a ready-to-use Foodsoft …
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TurnKey 13.0 ready for community development
Want to roll your own Debian Wheezy based images? You're in luck because we just finished upgrading TurnKey's build chain, including new versions of TKLDev and TurnKey Core ready …
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Using Comet to update web application data in real time?
Recently I've been looking into a powerful but complex web application technology we're considering using in future versions of the Hub. The problem: how do we update a browser …
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Python iterators considered harmful
I just tracked down a nasty bug in my code to a gotcha with Python iterators. Consider the following code... class Numbers(list): def even(self): for val in self: if val % 2 == 0: …
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How to write a good changelog
In a nutshell, think of your users. They read top to bottom. They have a very limited attention span. Even if they read all the way through, they're probably going to pay more …
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Python property gotcha
If you like using a single getter/setter function for your properties, watch out if using None for the default. If you do that you won't be able to set your property to None! …
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Use the stash, Luke (git-stash)
I was in the middle of developing a new feature for the TurnKey Hub when I received a bug report that needed to be fixed. What to do? Throw away my current changes? Checkout a …
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Amazon FPS (flexible payments system) in a nutshell
A few weeks ago I looked into Amazon FPS (Flexible Payments Service), just to see what our options are for premium services like commercial support. You know, the stuff we can't …
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My code refactoring algorithm
You're looking at a block of Python code. It's not immediately obvious what it does. It's sort of a mess and you realize it needs to be refactored. But how? What mental algorithm …
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Neat trick: invoking a Python debugger at an arbitrary point in your program
Do you find yourself occasionally wishing you could freeze a misbehaving program at an arbitrary point in time and then examining what was going on interactively? That's exactly …
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Growl type notifications in Django
First, a little background Django has an excellent messages framework which provides support for cookie and session-based messaging, for both anonymous and authenticated users. …
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Prevent double click on form submission
Recently I've been going over the Hub logs and fixing issues which have caused exceptions to be raised in the application. One in particular had me stumped for a while. An …
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A lazy yet surprisingly effective approach to regression testing
To regression test, or not to regression test Building up a proper testing suite can involve a good amount of work, which I'd prefer to avoid because it's boring and I'm lazy. On …
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Python performance tests reaffirms "premature optimization is the root of all evil"
"Premature optimization is the root of all evil" Today while programming I found myself thinking about the performance impact of various basic Python operations such as method …
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Practical guidelines for beautiful Python code
Every now and then Liraz and I find ourselves chatting about how much we love Python, but more so the lessons we have learned from coding, and how to apply them to create …
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Git - Fixing commit mistakes
I use Git. I use it a lot. I basically use it for everything I do, from code revision control to revisioning my notes, my journal, even my email archive (don't ask, it's a long …
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Tweaking Django exceptions with custom middleware
When settings.DEBUG is set to False, exception tracebacks will be sent to settings.ADMINS. To make it simpler to track down how and why the exception was raised, it's beneficial …
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Programming insight that helped unblock me
I'm finding a big part of the context switch involved in getting back to a high level of productivity on my programming is relearning old lessons. In particular one of the most …
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To Lisp or not to Lisp, that is the question.
Musings on Lisp by a routinely Pythonic programmer Last week I did some maintenance on various Python projects I haven't touched in years (literally), and I was surprised by how …
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TKLPatch summer contest summary: let the judging begin!
It all started with a happy accident I have a confession to make. This contest, which is directly fueling the largest expansion of the TurnKey library since the project started, …
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Django settings.py for development and production
So you developed a Django web application and now need to deploy it into production, but still need to actively continue development (bugfixes, tweaks, adding and testing new …
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TurnKey Appliance Development Contest: An Open Source Summer Bonanza!
Over the last few months donations have been trickling in and gradually piling up. Since there's a limit to how much beer we can reasonably drink we've been brainstorming ideas …
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Django navigation bar (active link highlighting)
Every web application needs a navigation bar. Common practice is to indicate to the user where he or she is, and is usually implemented by using a visual aid such as a bold …
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Automatic batch editing of Drupal nodes and CCK file fields
In a previous post I explained why we decided to convert most of the images on this site from PNG to JPG and how we used ImageMagick to batch it. What I didn't get into is how we …
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Optimizing Django: tricks for faster page loads
By reducing the file size of your CSS, JavaScript and images, as well as the number of unnecessary browser requests made to your site, load time of your applications pages can be …
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Two simple tricks for better shell script error handling
Psssst. Hey you... yeah you. Word on the street is your shell scripts don't do any error handling. They just chug happily along even when everything is broken. Because a lowly …
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CSS cheat sheet
While reading CSS books and experimenting I found it helpful to take notes and put together a cheat sheet for quick reference. I figured others might find it useful so I'm …
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Python symmetric encryption with CRC
Recently I needed to transfer data between entities, but I needed to keep the data secure from prying eyes, and its integrity intact from busy little fingers on the wire. I needed …
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9 things about CSS any web developer should know
9 things I didn't know about CSS that I should have known years ago but I only picked up from a couple of good CSS books. Having dabbled in web development over the years, I've …
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Django User Profiles - Simple yet powerful
So you're building a web application, and using the excellent contrib.auth subsystem to manage user accounts. Most probably you need to store additional information about your …
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Smack yourself if you don't use generic shell script hooks
Smack yourself in the forehead if you don't use the following snippet (or an equivalent) in all custom shell scripts that could benefit from a hooking mechanism: run_scripts() { …
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Background task processing and deferred execution in Django
Or, Celery + RabbitMQ = Django awesomeness! As you know, Django is synchronous, or blocking. This means each request will not be returned until all processing (e.g., of a view) is …
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Good automation vs bad automation
I recently eliminated a bit of code that was supposed to handle upgrading our build infrastructure from using one distribution (e.g., Ubuntu 8.04 LTS) to another (e.g., Ubuntu …
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Django Signals: Be lazy, let stuff happen magically
When I first learned about Django signals, it gave me the same warm fuzzy feeling I got when I started using RSS. Define what I'm interested in, sit back, relax, and let the …
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Friends don't let friends program in shell script
Lately I've been going over a hellish patch-work of old shell scripts we wrote to automate some internal processes and I realized something: friends shouldn't let friends program …
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Using git and rsync to synchronize changes on a staging box to a live server
The problem: working on a live web site is a bad idea Anyone who's ever worked on a sufficiently complex web site knows it's a bad idea to work directly on the live server hosting …