In the blog post Install dev environment for Kafka, Nodejs and node-red I described to install a kafka – webstorm environment on a virtual machine. For a productive use, we need high availability kafka installation. The idea is to use an orchestration framework like DCOS. It is based on the documentation of mesosphere https://docs.mesosphere.com/1.8/usage/tutorials/iot_pipeline/.
I started installation of Cloud Control as described in the oracle documentation. My hardware and software environment was:
Oracle Virtual Box 5.0.x, 5.1.X
MacBook Pro 11,4
Processor: 2.2 GHz Intel Core i7
I tested it with CentOs 7.2 and 6.8, always the same problem.
The intention is to monitor a SOA/BPM Cluster installation with 2 managed servers on two hosts with Cloud Control 13.2. There is a different user for weblogic and cloud control agent.
First step is to install the agents on 2 servers. Each server has one managed server. The easiest installation for agents is to install it with AgentPull Scripts.
Here is a short script, for further information about agent install see oracle documentation.
In the first blog about installing DCOS, I described the normal procedure to install it with centos base image. The are som issues:
- overlay file system does not work – docker
- small vm file system
- Can’t start several apps fom dcos universe
Write-Back flash cache is a feature of oracle Exadata since version 22.214.171.124 and is available since 2012. By default it’s turned off. Do I need wbfc?
When you look at performance benchmark of oracle Exadata disk performance it decrease from 10.800 IOPS (X2-2 Quarter, HP Disks) to 7.800 IOPS (X6-2 Quarter, HC Disks). The size increased from 600GB to 8TB. If you want to write random IO to X6 without write-back flash cache it can be a nightmare in opposite to a X2-2 machine.