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Quick VRRP verification on RDO Liberty (CentOS 7.1)

Sample bellow demonstrates uninterrupted access, providing via HA Neutron router,  to cloud VM running on second Compute node, when Controller and (L3-router enabled) first Compute node are swapping MASTER and BACKUP roles (as members of keepalived pair).
Convert DVR configuration been built in RDO Liberty DVR Neutron workflow on CentOS 7.1  in the same way as it was done in ([ 1 ]) .

Complete text is available here

Good Graphical User Interfaces for R

R is widely regarded (and quite rightly) as an excellent tool for statistics, data analysis, and machine learning. Many statisticians use R with the command line. However, the command line can be quite daunting to a beginner of R. Fortunately, there are many excellent frontends for R which make R easier to use.

To provide an insight into the quality of software available for Linux, I have highlighted below the 6 best open source frontends for R. Hopefully, there will be something of interest for anyone who wants to quickly get to grips with this programming language and environment. I consider RStudio and StatET for R to be the finest; but that’s my personal preference.

<A HREF=”http://www.linuxlinks.com/article/20151025104536902/GUIsforR.html“>Full story</A>

How To Upgrade From Ubuntu 15.04/14.10 To Ubuntu 15.10 ‘Wily Werewolf’


upgrade to ubuntu 15.10 from 15.04/14.10

Canonical has worked hard to make Ubuntu 15.10 a release for everybody by including features for normal Ubuntu users and developers both. To enjoy all the features that Ubuntu 15.10 has brought, just upgrade from your previous releases to Ubuntu 15.10. Follow along with me to successfully upgrade to Ubuntu 15.10.

Read At LinuxAndUbuntu

Ubuntu 15.10 ‘Wily Werewolf’ Released With New Features And Improvements Download Now


ubuntu 15.10 wily werewolf available to download

Finally after the wait of approximately six months, wolf sharp teeth are ready to catch your computer with its extreme power. Ubuntu 15.10 ‘Wily Werewolf’ has been made available to download with new features, alot improvements and fixes. Let’s see what features this wolf has hunted down for us.

Read At LinuxAndUbuntu

Template Management in LibreOffice 5

jack-templates-AIf you’re a LibreOffice power user, you’ve probably ventured into the realm of templates. But, if you’ve upgraded to LibreOffice 5, you’ve probably noticed a few minor changes to the way this feature is managed. It’s not a profound or game-changing shift, but a shift nonetheless.

Because many people overlook the template feature in LibreOffice, I thought it would be a good idea to approach template management for LibreOffice 5 as if it were a new feature…and one that should be considered a must-have for all types of users. So, sit back and prepare to discover that feature which will make your time with LibreOffice exponentially easier.

Why Use Templates?

You might be wondering why you would need to use templates in the first place. The answer to this question is simple—because you have certain types of documents, all of which follow the same formatting and similar information data, that you frequently create. For this, you should be using templates. When you need to create that document again, you open up the template, add your data, and you’ve just saved yourself from having to reinvent the wheel.

Where Does LibreOffice Save Templates?

When you open up LibreOffice 5, click Ctrl+Shift+E and the template manager will open (see Figure 1 above). From this window, you can see all of the available templates. The My Templates section is special, as it is all of the templates you have created (more on that in a moment).

If you happen to be using the Linux platform, there’s a particular folder in your home directory (aka ~/) called Templates. That folder happens to hold a bit of “magical” properties within certain desktop environments. If you use a desktop like Ubuntu Unity, Elementary OS Freya, KDE, GNOME 3, etc, you’ve probably noticed a handy menu entry when you right-click within a folder in your file manager called New. If you click New > Templates, you should see any templates you’ve saved to the My Templates section in the Templates Manager. You can select from that list and a new file will be created, from that template, in that working directory.

Adding a New Template

There are two ways to add templates to LibreOffice: You can create them on your own or you can download templates from the Templates Repository. I will warn you on the Templates Repository…many of them haven’t been updated for a very long time, so some of the styles may or may not render correctly in LibreOffice 5. On the off chance you find a template you really want to use, but it doesn’t render correctly, you can always save it, fix it, and then save it again as a template. There may be some older templates that will either not open and some might even crash LibreOffice—so use them with caution.

When you download a template from the repository (or any other location), there are two ways to save it. The first, and easiest, is to save it to that “magical” folder ~/Templates. Doing this will cause that template to appear in the My Templates section of the LibreOffice Template Manager.

But, what if you want to save that template to a specific section (or create a new section)? Here’s what you need to do:jack-templates B

  1. Open the template in the correct LibreOffice tool

  2. Click File > Templates > Save as Template

  3. Double click the folder (aka Section) that you want to house the template

  4. Click Save

  5. Give the template a name

  6. Click OK

If there isn’t a section within the Template Manager that suits your needs, all you have to do is click the New Folder button (Figure 2), give the folder a name, and click OK.

Using Templates

Once you’ve added those templates to the manager, how do you use them? Fortunately, the developers of LibreOffice have made this process quite simple. There are two ways to use a template—from the LibreOffice home window or from each tool (Writer, Calc, etc).

If you’re in the LibreOffice home window (Figure 3), click Templates, click in the section housing the template, and then double-click the template you want to use. That template will open as an untitled document, ready for data entry.

jack-templates C

The second route to opening a template for use is from within each individual tool. We’ll use Writer as an example. Open up Writer and click File > Templates > Manage. This will open the Templates Manager where you can find your template and open it with a double-click.

You’ll also notice, when you select a template within the Template Manager, a row of icons appears at the top of the window (Figure 4).jack-templates D

Once selected, you can:

  • Open a template

  • Edit a template (this will open the template up for editing)

  • View the properties of the template

  • Set the template as the default for that tool

  • Move the template to another folder

  • Export the template

  • Delete the template

If you happen to select a template as the default, you cannot unset it. The only way to revert to a blank document as the default template is to create a blank document, save it as a template, and set it as the default. The nice thing about this is that you can then set the styles exactly as you like so that every time you open a new document, you won’t have to go through and set the styles to suit your needs.

You should now have as complete an understanding of the LibreOffice 5 template manager as an end user should have. And, with this understanding comes a certain level of power—as in you powering up your LibreOffice usage to the next level.

Have you become a recent convert to templates? If so, how have they helped your usage?

This Week in Linux News: Jim Zemlin Speaks About New Frontier for OSS, Microsoft Azure CTO Shares Love for Linux, & More

jz-imagesThis week in Linux news, Linux Foundation executive director Jim Zemlin speaks about the new frontier for OSS, Microsoft Azure CTO Mark Russinovich shares love for Linux, and more! Stay in the know with these top Linux headlines of the week. 

1) Jim Zemlin shares thoughts on security, community, and the ‘new breed’ of coders.

Networking is the Next Frontier For Open Source Software– The Inquirer

2) Microsoft CTO embraces open source in the cloud at All Things Open conference.

Azure CTO Says Microsoft Loves Open Source. World Keeps Spinning– The VAR Guy

3) An overview of the Linux Foundation’s second “World Without Linux” video.

A World Without Linux Would Mean a World Without Direction– Softpedia

4) New Linux Foundation Collaborative Project hopes to boost use/development of SDN.

ONOS Project, Linux Foundation Partner for SDN Development– Lightwave

5) Adobe flash vulnerability affects all versions of flash for Mac, Windows, & Linux. 

Adobe Confirms Major Flash Vulnerability, and the Only Way to Protect Yourself is to Uninstall Flash– BGR

How CERN Uses OpenStack to Drive Their Scientific Mission

osdc Science Beaker PatternOne of the world’s largest scientific organization is using OpenStack to understand what makes up everything in our universe. CERN runs one of the most collaborative scientific projects on Earth, responsible for producing enormous amounts of data on a routine basis to make Nobel prize winning discoveries such as the Higgs boson has some pretty unique computing requirements.

Belmiro Moreira takes us through how OpenStack is being used to enable this groundbreaking science at CERN, and how they have contributed back to this open source project. 

Read more at OpenSource.com

AirConsole Is A Browser-Based Gaming Platform Where Your Smartphone Is The Controller

Gamers with a penchant for old school gaming have another platform to add to their entertainment mix: AirConsole is a recently launched browser-based games platform that repurposes players’ smartphones as controllers.

There’s no need to download any games or apps — or indeed, hunt out your Nintendo 64 and remember where you left the controllers… For a local multiplayer gaming session AirConsole is super simple to use — you just go to AirConsole.com on your computer and smartphone, entering the link code that’s shown on the bigger screen on your smaller screen…

Read more at TechCrunch

Kubuntu’s Release Manager Calls It Quits

After Jonathan Riddell lost his leadership roles relating to Ubuntu, the future of Kubuntu became quite vague for after Kubuntu 15.10. Riddell has announced now that he’s leaving Kubuntu. 

Now that Kubuntu 15.10 shipped yesterday, he’s moving on and will no longer be serving as the Kubuntu release manager. Instead, Riddell is just going to get involved with upstream KDE development more as he no longer wants to be involved under the Ubuntu/Canonical umbrella. 

Read more at Phoronix

GALPon Minino Another Lightweight Linux Distribution For 10+ Years OLD Computers


Picture

Here we have “GALPon minino” another Linux distribution that is based on Debian and designed for computers older than 10 years or more. The distro comes with LXDE Desktop Environment and a set of applications that fulfills the day-to-day needs of the users without slowing down the machine.
 

Read At LinuxAndUbuntu