20 Years of LINBIT
Block Storage and Open Source Developments since Nov 2001 In November 2021, we celebrated 20 years of LINBIT, and we wanted to take the opportunity to reflect on our story. This post takes a detailed and personal look at what inspired the formation of LINBIT and what inspires and drives them still today. Early Inspiration […]
DRBD Reactor – Prometheus
This blog post discusses the ‘Prometheus’ plugin, which implements a prometheus.io compatible metrics endpoint. But, first, for a more general introduction to ‘drbd-reactor,’ please read the overview blog post. Motivation Proper monitoring of DRBD® resources has been a messy task for too long. There are various monitoring solutions, and as DRBD is widely used, there are plugins/agents/importers that […]
DRBD Reactor – User Mode Helper (UMH)
This blog post discusses the User Mode Helper (UMH) plugin. Read the overview blog post first for a more general introduction to drbd-reactor. Motivation Experienced DRBD® users will know that DRBD (the part in the Linux kernel) can call user-defined helper scripts if several important events happen, like before a resource becomes a sync target. Such a […]
Multi Availability Zone Block-Level Replication using DRBD
Reader Bootstrapping Amazon Web Services (AWS) is designed from the ground up with availability in mind. The geographical locations of their Availability Zones (AZs) are carefully selected to mitigate the risk of natural disasters that could impact their services. Even the most unexpected natural disaster is unlikely to affect all of a region’s AZs. However, […]
DRBD Reactor – Design & Features
Over time, LINBIT® has built a variety of software components for use in highly-available systems. These components range from DRBD® for block device replication to LINSTOR®, our SDS solution, to various plugins/scripts integrating DRBD into Pacemaker, OpenStack, OpenNebula, Proxmox, Kubernetes, and more. However, a missing component was a daemon that monitors DRBD events like a resource becoming […]
Who Needs High Availability: Industries & Use Cases
When considering ‘Who needs high availability?’ ask the following question: is downtime unacceptable to your business? Do you work for an Enterprise company? Is access to your services & data around the clock important, if not required? Then likely, your business can benefit from a Highly Available (HA) IT system. Customers of all industries need […]
Tailored fit for any business: IBM LinuxONE & LINBIT SDS
IBM LinuxONE & LINBIT SDS Integration Benefits of the Integration Conclusion
File vs. Block vs. Object Storage
Storage systems are almost unquestionably the most critical component of larger IT systems. Without storage systems operating normally, websites could serve outdated information, customers and employees may not have access to the information they need, and in extreme cases, data loss could put a company out of business entirely. You could make similar statements for […]
How To Use an Open Source SDS Solution for HashiCorp Nomad
Overview Nomad is a simple and flexible workload orchestrator which deploys and manages containers and non-containerized applications. It does so across on-prem and clouds at scale and supports Container Storage Interface (CSI). LINBIT SDS is an open-source software-defined storage solution and is certified as the only open-source Technology Partner Integration through CSI by HashiCorp so […]
Tutorial: Stacked Block Storage in LINBIT SDS (aka LINSTOR)
In this tutorial, I will show you how to use LINBIT SDS to orchestrate DRBD, bcache and ZFS in a stacked block storage layer. We have three satellite nodes in this demo cluster, all installed with the latest CentOS 8.4, and each node has 1 x NVMe drive and 3 x HDD drives. Install ZFS […]
