Tag: High Availability

  • MariaDB – Continuous Availability

    Is it possible to have continuous availability in your data layer? It is critical to almost every organisation that their data is available and serves the needs of the business and customers at every moment of every day. The 9’s of Uptime Many people claim they have five 9’s of uptime and then a few…

  • MariaDB MaxScale — Replica Rebuild – Part 2

    Part 2 — Install Database Servers This multi-part series breaks down each section into easy logical steps. If you have not completed part 1, start here. MariaDB Enterprise Server Installation On the remaining three servers, we are going to install MariaDB’s Enterprise Server. MariaDB Enterprise Server is a product that requires a license. You could use a…

  • MariaDB MaxScale — Replica Rebuild – Part 1

    Part 1 — Install MaxScale This multi-part series breaks down each section into easy logical steps. MaxScale MaxScale is a fantastic product produced by MariaDB, which has, over time, been developed into a must-have tool for anyone running MariaDB. It is unfair to think of it as ‘just’ a database proxy as it brings with it many…

  • MariaDB MaxScale — Replica Rebuild – Part 3

    Part 3 — Create MaxScale Database Users This multi-part series breaks down each section into easy logical steps. If you have not completed part 1, start here. Creation of Database Users for MaxScale On one database server only, we will use ‘Server 1’, you will need to create some database users that will be used by MaxScale.  MaxScale…

  • MariaDB MaxScale — Replica Rebuild – Part 5

    Part 5 — Configure MaxScale This multi-part series breaks down each section into easy logical steps. If you have not completed part 1, start here. MaxScale Configuration To configure MaxScale various parts need to be completed. We will be using the MaxScale Config Sync to save the configuration within our database. This is a good thing, as…

  • MariaDB MaxScale — Replica Rebuild – Part 6

    Part 6 — The Magic This multi-part series breaks down each section into easy logical steps. If you have not completed part 1, start here. Replica Rebuild The MaxScale Replica Rebuild functionality is amazing. It brings a ‘Galera-like’ rebuild process to any replica servers. These servers could be brand new servers, which just have MariaDB installed, or…

  • MariaDB MaxScale — Replica Rebuild – Part 7

    Part 7 — MaxScale Configuration continued This multi-part series breaks down each section into easy logical steps. If you have not completed part 1, start here. MaxScale Configuration To allow MaxScale to process database connections, we must set up a listener and a service.  It is possible to have a number of listeners and services to support…

  • MariaDB MaxScale — Replica Rebuild – Part 8

    Part 8— Sysbench Test This multi-part series breaks down each section into easy logical steps. If you have not completed part 1, start here. Sysbench Sysbench is a great tool for testing various parts of a system, one of the tests is a MySQL driver that allows us to test our MariaDB installation. We are…

  • MariaDB MaxScale — Replica Rebuild – Part 9

    Part 9 — Live connection tests This multi-part series breaks down each section into easy logical steps. If you have not completed part 1, start here. Failover tests Whilst this mini-series is about rebuilding replicas automatically with MaxScale, it also brings some amazing protection against failure of your database servers or the ability for you to take…

  • MariaDB MaxScale — Replica Rebuild – Part 4

    Part 4— Configure SSH access This multi-part series breaks down each section into easy logical steps. If you have not completed part 1, start here. SSH Configuration For MaxScale to communicate with the database servers to be able to rebuild the replica servers, we must configure a passwordless user with an SSH key. This means…