Tag: ha

  • I got to learn some (more) High Availability things

    In the spirit of continuous improvement, I made another HA setup. Same basic front-end with two webservers behind one HAProxy load balancer, but with way more fault tolerance behind them. I used the guide I mentioned in the previous HA post to create this new setup. Webservers look to for a database connection.  This […]

  • Galera test cluster created

    Well that was freakishly easy.  Thanks again Digital Ocean.  Seemed easier to set up than master-slave replication and this is way more featureful in that you can write to any node in the cluster, not just the master. There may be a way to override this, but its like every Galera node is the same […]

  • I got to learn some High Availability things

    As part of a job opportunity, the interviewer assigned some homework.  The expectations were as follows: Redundant webservers Redundant database servers Read-write splitting between the webservers and the database servers And ~24 hours later, I have achieved this.  This is spread across six virtual machines: HAProxy server Apache server 1 Apache server 2 ProxySQL server […]