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HA (High availability) and clustering might be a quite unknown feature inside openSUSE (Pacemaker, Corosync, crmsh, resource agents, etc), but it provides really interesting and powerful options.
In order to explain how HA cluster works in a more visible and funnier way, I will expose a didactic demonstration with a cluster created with some Raspberries and Webcams. The main idea is to create a high available video security system with the tools provided in openSUSE (and some custom code, of course). In this use case, the cluster will host a Webcam service where if the current Webcam (or raspberry with the connected Webcam) fails the whole system is migrated to the seconde node, and the service continues working in the same address and without downtime. This will help to understand what is application or service level redundancy and some of the advantages of it.
HA (High availability) and clustering might be a quite unknown feature inside openSUSE (Pacemaker, Corosync, crmsh, resource agents, etc), but it provides really interesting and powerful options.
In order to explain how HA cluster works in a more visible and funnier way, I will expose a didactic demonstration with a cluster created with some Raspberries and Webcams. The main idea is to create a high available video security system with the tools provided in openSUSE (and some custom code, of course). In this use case, the cluster will host a Webcam service where if the current Webcam (or raspberry with the connected Webcam) fails the whole system is migrated to the seconde node, and the service continues working in the same address and without downtime. This will help to understand what is application or service level redundancy and some of the advantages of it.
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