In a previous post I had mentioned that I was doing a bit of digging into Docker in order to get a better grasp of the technology. Part of that was exploring common administrative tasks. I would venture to say…

Cassandra is a distributed, decentralized, fault-tolerant system. Data is replicated throughout multiple nodes (centers) across various data centers. The fact that Cassandra is decentralized means that it can survive single or even multi-node failures without losing any data. With Cassandra,…

Percona Live Santa Clara, an annual event where open source database users, developers and enthusiasts come together, was held in April at the Santa-Clara convention centre. Pythian was well represented once more with no less than five presentations and a…

One key factor on running stateful services (i.e., database servers) on container-centric, managed environments is portability: you need the dataset to follow your container instance. I spent some time reviewing how external persistent volumes are handled when working with DC/OS…

I was recently asked to set up a solution for Cassandra open-source log analysis to include in an existing Elasticsearch-Logstash-Kibana (ELK) stack. After some research on more of the newer capabilities of the technologies, I realized I could use “beats”…

Earlier this year, I was presented with the challenge of streamlining user access to MySQL, allowing users self-serve access using their LDAP credentials, while logging all access. Of course, various MySQL forks allow for user auditing, but the solution is…

While working on a few tasks in the past few weeks, I faced a problem that involved setting a “filter” for an application that was exposed to the internet. The application receives requests with some data, processes it and then…

Introduction In this post we will explore one approach to MySQL high availability with HAProxy, Consul and Orchestrator. Let’s briefly go over each piece of the puzzle first: – HAProxy is usually installed on the application servers or an intermediate…

Introduction One of the things I like about Continuent Tungsten is how Tungsten Connector can hold traffic while a (graceful) master switch is taking place. This means the application may experience a brief spike in latency, but has not returned…

Introduction In this article we will explore one approach for deploying ProxySQL behind a load balancer in Google Cloud. While considering the deployment of ProxySQL, one has basically the following options: Install ProxySQL on existing application server(s) Provision dedicated ProxySQL…