Qlik Sense Release Version & Support List

Qlik Sense log files usually contain a reference to a build or engine number, and I’ve not yet found a complete list – so I’ve created one.

This list contains the current (at time of writing) list of Qlik Sense external version names to build number, release dates and end of support dates.

For the latest version of this list (and in CSV format), visit https://github.com/withdave/qlik-releases

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QVD read/write performance comparison in Qlik Sense Enterprise with QVD and QVF encryption

Following on my previous post, I had a look at the performance impact of enabling QVD and QVF encryption in Qlik Sense.

In this test, I’m using Qlik Sense Enterprise November 2019 release on an Azure B4ms (4 vCPU, 16GB RAM) VM running Windows Server 2019. Qlik Sense encryption settings were left at default.

A sneak peak of the results for the largest data set tested
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Qlik Sense QVD / QVF Encryption (Qlik Sense Enterprise on Windows)

From Qlik Sense Enterprise on Windows September 2019 (the option became configurable via the QMC in November 2019), users have the option of enabling one or both of QVD and QVF encryption – adding at-rest protection from people who shouldn’t have access to your valuable files. This is enabled server-wide and applies to all content on the environment.

The big issue that I see is that any security office is going to require that any and all encryption is enabled – without understanding the issues this could cause.

Here’s the new DATA ENCRYPTION section under Service cluster in the QMC
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AWS Lightsail snapshots – now automatic for Linux

As an update to my previous post on using lambda to automate snaphots, I’ve finally logged back into the Lightsail console and seen they have added a new feature – automatic snapshots.

There’s now an automatic snapshot section – note that the manual snapshots above are the 14 days dutifully maintained by the lambda script

It looks like the feature was added in October, based on the help site.

You’re able to change the time the snapshot is taken, but not the amount of history maintained

I won’t be switching from the lambda function as I require 14 days on Lightsail boxes, but if you’re happy with the following constraints, then it’s a great option:

  • Pre-set to 7 days of snapshot retention (no more, no less)
  • Must be set to run at a specific time (no triggers)
  • Available on Linux boxes only (no Windows as yet)

Remove (destroy) all variables in a Qlik Sense application

In QlikView, you had the ability to select multiple variables and delete them en-mass. In Qlik Sense, the UI permits you to undertake this activity one-by-one, and each takes two or three clicks.

This bookmarklet (Chrome only this time, not tried elsewhere) removes ALL variables from a Qlik Sense application by cheating the APIs used by the Qlik Sense client.

Demo showing addition of bookmark and destruction of variables in a Qlik Sense app
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Generating consistent Qlik Sense app icons

Application icons are prominently displayed throughout the Qlik Sense hub, and they are usually either the default blue, or some horrendously stretched icon that has no business being on an enterprise system.

This simple tool (packaged as an extension and accessible as a mashup) helps users generate consistent, appropriate app icons for use in their apps.

Without peering at the text, the default icons are rather generic
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Get Qlik Sense Object IDs quickly

If you’re doing anything but vanilla Qlik Sense development, it’s likely you’ll need to get to the object IDs at some point. You can do this by appending /options/developer to the end of the page URL and clicking on each object in turn, or using dev tools – but that’s slow.

This bookmarklet makes getting the object IDs fast in Chrome (and, begrudgingly, IE11).

Animated demo showing adding of bookmarklet to chrome and displaying of object IDs
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Adding CentOS Web Panel to a fresh CentOS 7 box

Revisiting an earlier post on configuring a LAMP server, and on a recent post on installing Webmin, this time I’m dropping CentOS Web Panel (CWP) onto a new CentOS 7 box.

So, on a fresh CentOS 7 1901-01 box on AWS, let’s begin.

# Set the hostname correctly before we start off, otherwise CWP will pick up the wrong name
hostname sub.host.com
# Update existing packages
sudo yum -y update
# Install wget and nano (as I like nano and wget is needed for the CWP install)
sudo yum -y install wget nano
# Reboot the box to sort out any updates requiring reboot
sudo reboot
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Adding Webmin to a fresh CentOS 7 Box

As a quick refresh from an earlier post, I’m going to use a new CentOS image with Webmin as the control panel of choice.

Happily, the only thing that’s changed in the documentation is the way the gpg key is imported – documentation is here: https://doxfer.webmin.com/Webmin/Installation

So, on a fresh CentOS 7 1901-01 box on AWS, let’s begin.

# Update all base packages
sudo yum -y update
# Install nano (my preferred text editor)
sudo yum -y install nano
# Edit the /etc/yum.repos.d/webmin.repo file
sudo nano /etc/yum.repos.d/webmin.repo
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An example of embedding Qlik Sense (mashup and APIs)

I’m often asked how to create mashups with Qlik Sense, and I strongly believe that it’s both easy and intuitive to leverage Qlik Sense APIs to build mashups…when you understand the options available to you.

To help new developers, I’ve put together a basic mashup using the Material Design Lite template. This example connects to a provided app and demonstrates several different ways of embedding Qlik Sense into a HTML site using just a little Javascript.

The mashup has four pages, one based on the default template and the other three focused on content
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