Category: Clustering

  • Using Ansible to manage your VPSs – Part One

    Ansible is a system to automate the updating of server configurations and other administration tasks.  In this post I’ll explain what’s necessary to get started with Ansible, creating a configuration structure, telling Ansble about your hosts and running ad-hock commands on multiple hosts. Ansible is useful when you have 3 or more VPSs and need…

  • Kubernetes support on RimuHosting VMs

    “Kubernetes is an open source orchestration system for Docker containers. It handles scheduling onto nodes in a compute cluster and actively manages workloads to ensure that their state matches the users declared intentions. Using the concepts of “labels” and “pods”, it groups the containers which make up an application into logical units for easy management…

  • Building database clusters with MySQL

    MySQL is a mainstay of many web based applications, and is popular with lots of our customers. There does comes a time when a single database server is not enough. To enhance redundancy MySQL has a couple of options. You can add more servers with vanilla replication enabled. Or you can look at setting up…

  • Storage Clustering Part 2: GlusterFS

    GlusterFS is an interesting solution for providing redundant network attached storage clusters. Some features include… trivially easy for basic setups supports virtually any file-system no need to mess with kernels can work across commodity network hardware suitable for enterprise deployment has commercial support available GlusterFS can scale well also, its simple configuration based storage is…

  • Easy IP failover (Debian squeeze)

    Say you have a bunch of servers on a fast private network, running a busy web site. And you need a gateway server so you can reach those from the outside world. You might run a proxy on a gateway server to expose that. However there could be a problem accessing your site if that…

  • Storage Clustering Part 1: An Introduction

    John and I have recently been looking at server clusters, and how they can be provisioned to best fit our customers needs. This post is the first in (hopefully) a series on the results of that research. To start with in this post I would like highlight some common questions about big storage options. If…