How to use letsencrypt certificates in Jupyter and IPython

jupyter-sq-textSo I got into the letsencrypt-everything-train using letsencrypt. It’s really nice being able to add SSL to all my private and public domains, gives me the illusion of security, anyway, you are most likely here to know how to add your letsencrypt certificates to your iPython or Jupyter setup.

If you already have your letsencrypt certificate skip to step 3.

1. Clone letsencrypt from github

Copy the generated certificates to a location your notebook server can access

2. generate a certificate for your domain, I love this one liner

3. On your iPython/Jupyter configuration file you’d need to add the following lines

Start your notebook server and voila.

Hope this is useful to you.

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Fix “IOError: Not a gzipped file” In TensorFlow Docker Example

TensorFlow_logoIf you are learning TensorFlow there’s a lot of nice options that the TensorFlow tutorial site propose, one of them is the one of using Docker Containers, however I found that while trying to follow through the MNIST example notebook I was getting error:

IOError: Not a gzipped file

This is caused because the notebook attempts to download the MNIST data set from the original site, for whatever reason the downloads are not working but if you try it from a regular browser you’ll be able to download the files however.

So to fix this problem what I did is the following:

1.- Delete the existing files inside the docker container

2.- Download all the files to your local system:

 

3.- get your docker container ID

output:

CONTAINER ID        IMAGE                            COMMAND                  CREATED             STATUS              PORTS                              NAMES

79110284079c        b.gcr.io/tensorflow/tensorflow   “/run_jupyter.sh”        44 minutes ago      Up 44 minutes       6006/tcp, 0.0.0.0:8888->8888/tcp   clever_bhaskara

4.- copy the files from your local folder into your docker container in the /tmp/mnist-data folder

That should do the trick, keep following the notebook lesson.

Happy Learning.

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How to compile Apache Zeppelin with Spark 1.6

zeppelinhqdefaultRecently I found Apache Zeppelin, an Apache Incubator project that seems to bring a new paradox into the data science game, and other areas.

Something I’ve really like about Zeppelin is the ease of interaction with spark, I use the spark-shell all the time, but it’s tedious having to re-evaluate commands that I previously inputted, Zeppelin fixes this problem. It let’s me go back and forth across the script that I’m building on spark which is nice.

At time of writing the latest release of Zeppelin is 0.5.6, which comes bundled with Spark 1.4.1 but for reasons I want to use Spark 1.6 so in order to build Zeppelin with Spark 1.6 you are going to have to build it from the source.

1.- Download the latest stable source code from Zeppelin’s download page:

https://zeppelin.incubator.apache.org/download.html

2.- untar

3.- compile with support for spark 1.6

For more information on what other parameters you can tweak, checkout Zepellin’s Readme file

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Solr FieldType class to type

Solr, you are great but we need a list of mappings between your classes and your types to understand everyone’s examples of you.

Here’s a small list I’ve compile for Solr 5.3

 

Class Type
org.apache.solr.schema.TrieLongField
org.apache.solr.schema.TrieDateField tdate
org.apache.solr.schema.BoolField boolean
org.apache.solr.schema.TextField text_general
org.apache.solr.schema.StrField strings

I hope this is useful for everyone landing on this artcile

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How to fix HBase 0.94.x not starting after downgrade

hbase_logo-470x140After downgrading my HBase installation from HBase 1.1.2 (currently stable at time of writing) to HBase 0.94.27, for purposes of compatibility with Gora I found myself unable to run HBase with multiple errors, after a couple of hours of debugging I found that the solution is to simply delete all the files in the hbase.rootdir which I specified in my hbase-site.xml

so, if your hbase-site.xml has the following properties

 

just cd to the previous directory and drop the hbase folder and recreated

after this, just start hbase with start-hbase.sh and eveything should be fine.

Related Error Stacks:

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Coda 2 Plugin to autocomplete Angular

coda-iconI love the new Coda 2.5, it has great improvements over the first release of Coda 2 however there is one huge thing that it’s missing and that is more Angular integration.

I think it’d be great if we could have bot syntax and code competition that fits our Angular needs.

So….. I wrote a small plugin that autocompletes the basic angular functions and services, it’s not much but it can get you started, please leave some feedback regarding what do you think I could improve or feel free to collaborate on GitHub.

Downolad from GitHub

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How to duplicate a GlideRecord on ServiceNow

servicenowWhile working on generating thousand of rows to stress my application on ServiceNow I figure a way to duplicate any GlideRecord.

It’s important to note that in my example I’m querying a table and duplicating each record, this method should work with any single GlideRecord.

For the sake of simplicity here’s the code:

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org.hibernate.HibernateException: /hibernate.cfg.xml not found in IntelliJ Project

hibernate_logo_aWhile working on a project on IntelliJ I added Hibernate, everything looked great since IntelliJ Idea 13 added the libraries and even allowed me import a schema until I hit run, then I stumble across this problem:

“org.hibernate.HibernateException: /hibernate.cfg.xml not found”

Like, “WHAT?” Wasn’t IntelliJ supposued to configure everything for me? Well, it configured everything up to a nice point but this error was a show stopper, the solution is quite simple and that is to move the hibernate.cfg.xml file to your WEB-INF/classes directory

To fixed I had to do the following.

In your project, in the WEB-INF directory, create a classes folder if it already doesn’t exist.

Look for hibernate.cfg.xml in your Project, it’s usually located at Project > src > main > java and copy it to Project > src > main > webapp > WEB-INF > classes

Hit Run and that’s it.

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How to delete de DefaultDomain of an Integrated Application Server for Weblogic on OS X

weblogicWow, this has a really long post title.

Basically what I just figured out is how to delete the default domain that is created by the integrated Application Server (weblogic) by Jdeveloper.

Open Terminal.app

Here you’ll find various folders, go into the one that resembles systemjdevversion for example

then delete folder DefaultDomain

After this just restart jdeveloper and you can create a default domain again.

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True meaning of blog

It’s been a while since I’ve added a post to my blog, I though I’d just add this quick note just to add the feel of new post to the main page.

When I decided to start a blog I realized that I could simply share with the world what I learn, of course not everything I learn, but the things that I learn that google couldn’t solve with a simple search, most knowledge is arcane, if you could see my notes you’d be surprised how much tweaks and work arounds I figure. For this 2014 I’ll try to share more of my findings on this website.

Hope something is reading out there.

Huh, the internet, such majestic creature.

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