https://polar-node.work/tags/mariadb/Recent content in Mariadb on polar-node // runbooksHugoen-usFri, 19 Jun 2026 00:00:00 +0000https://polar-node.work/projects/guacamole-ha-cluster/Fri, 19 Jun 2026 00:00:00 +0000https://polar-node.work/projects/guacamole-ha-cluster/<p><strong>Status: in progress.</strong></p> <p>A resilient remote-access gateway built so that no single component — web tier, application tier, or database — is a single point of failure:</p> <ul> <li><strong>Multiple Guacamole nodes</strong> behind an <strong>Nginx</strong> load balancer, so a node failure doesn&rsquo;t take down access</li> <li><strong>MariaDB Galera cluster</strong> as the authentication/connection database backend — synchronous multi-master replication, no single DB instance to lose</li> <li><strong>Session recording</strong> for connection auditing and compliance</li> <li><strong>Infrastructure as Code</strong> — the whole stack defined and reproducible, not hand-built</li> </ul> <p>The interesting part of this project isn&rsquo;t installing Guacamole — that&rsquo;s well documented. It&rsquo;s getting the <strong>Galera cluster quorum right</strong> (odd node count, proper arbitrator handling) and making sure failover at every layer — Nginx, Guacamole, and the database — actually works under a node failure, not just in theory.</p>