Nowadays, Docker has support for plugins; for LINBIT, volume plugins are certainly the most interesting feature. Volume plugins open the way for storing content residing in usual Docker volumes on DRBD backed storage.
In this blog post we show a simple example of using our new Docker volume plugin to create a WordPress powered blog with a MariaDB database, where both the content of the blog and the database is replicated among two cluster nodes. Continue reading →
In the “Root-on-DRBD” Tech-Guide we showed how to cleanly get DRBD below the Root filesystem, how to use it, and a few advantages and disadvantages. Now, if there’s a complete, live, backup of a machine available, a few more use-cases become available; here we want to discuss testing upgrades of production servers. Continue reading →