Three weeks ago we released a new version of Speak Like A Brazilian.
Most changes are not visible to users, mainly improvements to the framework used to build it
But one major change that is visible to users is the new layout and CSS, powered by
Semantic UI, which replaces Bootstrap.
The frameworks have some parts that overlap, but Semantic UI has more components that can
be easily used. There are tons of examples, plug-ins and snippets of code for Bootstrap, but
sometimes they do not match your current layout, or become deprecated with new releases.
This was the main reason for using Semantic UI instead of Bootstrap. Coincidentally, the next
major change in Speak Like A Brazilian is adding semantic web tags to the site. These tags are
useful for search engines, for displaying extra information in search results, but also for
linked data sites to index our content.
Nikto is a web server scanner, written in Perl and licensed under
GNU GPL. The source code is available at GitHub.
We released a new version of Speak Like A Brazilian last week,
upgrading from Laravel 4.x to 5.x. Once we had a release candidate (RC) tag
ready we deployed it and ran Nikto to check for issues in the server.
The default settings are enough for an initial test, but you can take a look at
nikto —help for other interesting parameters.
nikto -host https://speaklikeabrazilian.com
Here are the results of the scanning.
- Nikto v2.1.4
+ Target IP: 22.214.171.124
+ Target Hostname: speaklikeabrazilian.com
+ Target Port: 80
+ Start Time: 2016-04-08 12:57:02
+ Server: nginx
+ Retrieved x-powered-by header: PHP/5.5.9-1ubuntu4.14
+ No CGI Directories found (use '-C all' to force check all possible dirs)
+ robots.txt contains 11 entries which should be manually viewed.
+ ETag header found on server, fields: 0x5704861f 0xef
+ OSVDB-3092: /new: This may be interesting...
+ OSVDB-3092: /new/: This might be interesting...
+ OSVDB-3093: /.htaccess: Contains authorization information
+ OSVDB-3092: /de/: This might be interesting... potential country code (Germany)
+ OSVDB-3092: /it/: This might be interesting... potential country code (Italy)
+ OSVDB-3092: /jp/: This might be interesting... potential country code (Japan)
+ OSVDB-3092: /pt/: This might be interesting... potential country code (Portugal)
+ OSVDB-3092: /es/: This might be interesting... potential country code (Spain)
+ 6448 items checked: 39 error(s) and 11 item(s) reported on remote host
+ End Time: 2016-04-08 13:29:41 (1959 seconds)
+ 1 host(s) tested
There list had a few false positives, but two outstanding issues could be easily fixed.
First the .htaccess file.
And the second one is to hide the PHP server signature.
# File: php.ini# From: http://www.techbrown.com/hide-server-signature-of-nginx-php-version-on-linux.shtmlexpose_php= Off
It is not polite to run Nikto (or most other scanners to be honest) on web sites that you
do not maintain. Some sites are behind firewalls and IDS (Intrustion Detection System) systems
that may block Nikto. When that happens, you can liaise with your Ops team and schedule an
internal run on an application you develop or maintain.
Nikto may help you finding flaws in your server and deployment. The next step now for Speak Like A
Brazilian now is running the new code through
OWASP’s ZAP Proxy,
which can analyse the HTTP requests for possible bugs.
One of the most common tasks in data management, common in many companies, is
ETL. ETL stands for
Extract, Transform, and Load. Basically, it consists in retrieving existing data, doing
some transformation (remove columns, add columns, sum values, etc), and then loading the result
data back in to some other database.
We just finished migrating Speak Like A Brazilian from
Laravel 4.x to Laravel 5.x, and besides the necessary changes for adapting the existing code to
the new version of the framework, we have also tackled other issues in the backlog,
such as SSL, using a new e-mail service and a few changes in the database schema. Due to this
last item, we had to do a small ETL.
But the interface can be quite intuitive, with drag and drop items, help pop up dialogue boxes, and
a help available with the local tool. There are other tools such as Luigi and Pentaho Kettle that could
have been used for the same task. It also supports several databases out of the box.
Talend has other free and commercial tools, that can be used for other tasks and processes in
Data Management, and solutions that can also work with Big Data.
On Using Docker
Since the database is quite small (< 10 MB), using Docker seemed like a good idea to avoid
installing MySQL or MariaDB locally and having to configure databases and move data around.
But before starting containers, we needed a dump of the existing database.
mysqldump -u user -p pass > slbr_20160403.sql
And now we could load the data into a new container, using the mysql:latest Docker image.
Transfer the data from the server to local computer, and start a container where we will store and massage the data.
Done, now the old database is running in one container of the mysql:latest image, listening to port 4406
and the new database is running with Docker Compose, listening for connection on 3306.
Creating Talend jobs to migrate the data
We start by creating a blank project in Talend.
And then creating the database connections for the two databases.
Now it is just a matter of dragging and dropping the two connections on to the main canvas.
After that, we still need one more component: a map or
tMap. This allows you to map
columns between databases, doing transformations like running SQL functions or Java code.
In our case, the database for Speak Like A Brazilian had a few columns removed. These columns
were simply not mapped into the destination database. Running the job loaded the data, but excluding
the old columns.
There was also one column added with a defaul value, for which the tMap was also used.
You can play with Talend, use row filters and other components to do different data modifications,
and also use other features such as job schedule or combine with other Talend tools.
We could have used Python, Shell, or other tools for the job, but using a tool tailored for
ETL is quite handy and easy. Specially in case you ever need to do that again, against different
databases. All it takes is just adjust the database connections and re-run the jobs.
O segundo dia do DMC Latam 2014 começou com um dos dias mais frios em São Paulo. Mas dentro do Hotel o clima estava ótimo, e ainda tinha bastante café preto e bem quente. Percebi que o pessoal estava mais a vontade para trocar cartões e puxar assunto na área livre.
O DMC Latam 2014 começou nesta quinta-feira, 13/08. O evento está sendo realizado no mesmo local do ano passado, na Rua Martins Fontes, 330, no Hotel Braston. Este ano consegui chegar cedo e peguei o café da manhã.
A abertura deste ano teve um narrador, daqueles com voz de filmes, explicando a agenda do evento e fazendo os agradecimentos aos patrocinadores. Seguido pelo Rossano falando sobre realizações da DAMA desde o ano passado e sobre as palestras do dia.
O DMC Latam deste ano distribuiu um brinde na entrada para todos os participantes e também um exemplar do livro “A função do Chief Data Officer - Reorganizando os cargos executivos para alavancar o seu mais valioso ativo”.