Pacemaker was never designed to operate across the WAN, or any high latency networks. However, there has always been a need and desire to orchestrate active/passive failovers between data centers and across long distances. To address this issue the Booth Pacemaker add-on was conceived back in late 2011. LINBIT has been involved in the development […]
Data seems to be on everyone’s mind these days. From employee to financial data, your company has to keep it available through seamless replication — without downtime. LINBIT DRBD is the open source software that ensures High Availability for your enterprise.
In Jim Whitehurst’s Red Hat Summit 2017 keynote, he opened by making a bold claim: planning is dead. He followed up his statement with predictions from the past that have turned out to be grossly inaccurate. He referred to a prominent example from 1899 when the US Patent office stated that “Everything that can be […]
Fencing is the process of isolating a node from a computer cluster or protecting shared resources when a node appears to be malfunctioning. As the number of nodes in a cluster increases, so does the likelihood of failure.1
By using the Pacemaker 1.1.15 release, the LINBIT cluster stack has been cutting-edge. Now the distributions are catching up.
TL;DR: Pairing DRBD with VDO reduces the replication network and storage utilization by ~85% while increasing load by ~0.8. VDO (Virtual Data Optimizer) is a ready-to-run software package that delivers block-level deduplication, compression, and thin provisioning capabilities to Linux. VDO operates inline at a 4 KB granularity, delivering the best possible balance of performance and […]