Amazon distributes its own version of the ElasticSearch stack. To be honest from the Elastic Search point of view, I would consider this move as an act of war. However both sides have decent arguments, so I will only focus on what we get.
I had to prepare an Elastic Search training that contains a theoretical and a hands on part. For the hands on part, we want the people to have locally on their laptops the following software:
- An ElasticSearch node
- Kibana to build dashboard
- A Jupyter notebook in order to use Python to play with ElasticSearch
- A Grafana Instance
Thanks to docker and docker-compose, all of these can be set in a few minutes. Continue reading “A complete ELK dev env in a few minutes”
In this post we will simulate two different betting tactics for the game of roulette. A martingale is a system of bet that gives the player an advantage that ensures gains.
Of course a working martingale does not exists in casino games but a lot of people still believe that the double bet on lost tactics work.
Let’s find out.
We are using Apache Camel to perform most of our ETLs. We are also using NodeRed for small things. For WebSphere MQ, I don’t think that it is possible to connect to the MQ using the IBM native protocol via NodeRed. So we will do this with Camel.
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.
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)
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.