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Manneken-Tech

Where Tech meets Beers

Author

Arnaud Marchand

Heavily interested in new technologies, I like to upgrade old software to the most recent standards and stack as many data I can find in order to mine it for unexpected parterns.

Testing the Elastic Stack 6.3

Version 6.3 is out and it includes a lot cool new features.

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Using ElastAlert

ElastAlert is a very nice package that can be installed on top of the ELK stack. It is a free replacement of the X Pack watcher product.  The basic idea of the package is to use rules defined as yaml file in order to describe each alerting rule. You will find a nice introduction of the package possibilities here.

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Monitoring Docker Part 3

We already saw that we can monitor Docker via the Elastic Stack in this previous post. In this post we will update the monitoring script in order to also store the docker events in Elastic Search.

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Testing the ELK stack 6.1

Elastic Search released the version 6.1 of its stack, and once again there are a tons of good new things but this is once again a disappointment for developers writing plugins for Kibana. Once again the compatibility is broken and the code has to be changed. This is painful and I stopped writing plugins for it. I will probably still port the traffic lights plugin for it. (I already have 3 different versions of it, one per Elastic flavour)

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Playing With Docker and Cassandra 2

We already made a few blogs on Cassandra and Kairos DB. Unfortunately, the recipes used to build the cluster via docker-compose are no longer working with new versions of docker. You will find below a working docker-compose using version 3 of the docker-compose system that builds a three nodes Cassandra cluster.

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Python Lambdas in AWS

Using python in amazon web service lambdas can be tricky in the following scenarios.

  • There are some dependencies that are not included in the aws python lambda executor
  • There are some dependencies that require binaries (Packages such as numpy, sklearn e.t.c.)

For the first topic it is still possible to develop on your laptop and to send the lambda via s3. For dependencies with binaries you have to work with a real ec2.

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Using AWS to build a personal VPN

Personal VPNs can be really useful in the following scenarios:

  • You want to secure your connection because you are using a free internet hotspot.
  • You want to access forbidden sites such as google from countries that block it.
  • You want to use a service that is not available in your country and that has an IP geo location filter

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Kibana 5.5 Region Map

Kibana 5.5 is out, and there is a nice new visualizer that lets you colorise a full country depending on the value of the record. It is really interesting for me as I developed such a plugin because I required the exact same functionality here.

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Playing with the 6502 in 2017

For people born in the seventies, 6502 is a magic number. It was the name of one of the most used processors in electronic devices of the eighties such as the Apple 2, the commodore 64, the nintendo NES e.t.c.

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