title: Scaling Mariadb Galera Cluster
body: <p>I have installed MariaDB Galera Cluster on ubuntu 14 and it is working fine.</p>
  
  <p><a href="https://www.digitalocean.com/community/tutorials/how-to-configure-a-galera-cluster-with-mariadb-on-ubuntu-12-04-servers" rel="nofollow noreferrer">See the tutorial</a></p>
  
  <p>I have 3 nodes (each 500GB HDD capacity) mariadb cluster and all replications are working perfect.</p>
  
  <p><strong>My questions are :</strong></p>
  
  <p><em>When I run out of disk space after few years, What is the exact way to increase the capacity of the database?</em></p>
  
  <p><em>Is it possible to add extra nodes and increase the database HDD capacity?</em> I heard about MaxScale, but I can't figure it out to work on</p>
  
  <p>Can anyone explain this according to above configuration.</p>
  
  <p><a href="https://mariadb.com/kb/en/mariadb-enterprise/mariadb-maxscale/maxscale-simple-sharding-with-two-servers/" rel="nofollow noreferrer">This is a MaxScale Simple Sharding with Two Servers</a></p>