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#News(IoTStack) [ via IoTForIndiaGroup ]
Working for Red Hat is awesome. Not only can you work on amazing things, you will also get the tools you need in order to do just that. We wanted to test Eclipse Hono (yes, again) and see how far we can scale it. And of course which limits and issues we encounter on the way. So we took the current development version of Hono (0.7) from Eclipse IoT, backed by EnMasse 0.21 and ran it on an OpenShift 3.9 cluster.
Note: This blog post presents an intermediate result of the whole test, as it is still ongoing. Want to know more? We put in a talk for EclipseCon Europe about this scale test. With a bit of luck we can show you more in person at the end of October in Ludwigsburg.
The lab
From the full test cluster, we received an allocation of 16 nodes with a bit of storage (mostly HDDs), Intel Xeon E5-2620, 2×6 cores (24 threads) each and a mix of 64GB/128GB RAM. 12 nodes got assigned for the IoT cluster, running Eclipse Hono, EnMasse and OpenShift. The remaining 4 nodes made up the simulation cluster for generating the IoT workload. For the simulation cluster, we also deployed OpenShift, simply to re-use the same features like scaling, deploying, building as we did for the IoT cluster. Both clusters are a single master setup. For the IoT cluster, we went with GlusterFS as the storage provider as we wanted to have dynamic provisioning for the broker deployments. Everything is connected by a 1GBit Ethernet link. In the IoT cluster, we allocated 3 nodes for infrastructure-only purposes (like the Docker registry and the OpenShift router). Which left 8 general-purpose compute nodes that Hono could make use of.
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