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Docker

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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Testing ELK 5.2

ELK 5.2 has arrived and there are some nice additions. Please find below a complete docker-compose file that let’s you quickly play with the latest versions of elastic search, kibana and a few additional tools used to monitor the system.

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Monitoring Docker 2

There are a lot of tools that can be used to monitor docker as explained in this previous post, but it could be interesting to keep the history of the CPU and memory used by each individual container.

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Playing With Kairos DB

KairosDB is a time series database built on top of Cassandra, one of the top NoSQL database. It has a very simple API and a nice Grafana plugin in order to display the time series.

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Linking InfluxDB and Grafana

We will once again use docker to deploy a fully functional stack of InfluxDB and Grafana. I was a little bit disappointed by the lack of free options to scale the InfluxDB horizontally but however, it is still a nice product when it is deployed in a single server.

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Playing with a Cassandra cluster via Docker

Docker is the best tool to quickly check new technologies without the hassles of installations.

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