Hi Peter, I need to get round to polishing a dockerfile that would create an image to be run as a CloudStack simulator in a container (or if there's enough interest I could share it's current state for others to finish).
But..... If you want to work on real world integrations, I'd guess that you would likely to need real hosts to create VMs on. Trillian (https://github.com/shapeblue/trillian) was created for the exact purpose that you are describing. In fact it runs most of the automated testing done on CloudStack. And can support 10s even 100s of concurrent environments. I'm not going to lie - it takes a bit of setting up (and isn't local) - but it's run thousands of times creating environments for testing business logic and integrations Regards Paul Angus -----Original Message----- From: Muryshkin, Peter <peter.murysh...@zv.fraunhofer.de> Sent: Thursday, October 21, 2021 11:30 AM To: dev@cloudstack.apache.org; us...@cloudstack.apache.org Subject: Local simulation of Apache Cloudstack instances/API endpoints: state of the art, target groups and use cases Hi all, from what I can find, there are three more or less established/already well elaborated approaches to simulate a CloudStack instance locallly. Depending on the target group and their goals, they can have different levels of fidelity and usability. 1. Obviously CloudStack developers confgure a KVM development environment to work inside it, this is part of the Apache CloudStack Hackerbook kindly shared by ShapeBlue. [1] 2. For test scenarios, Hackerbook describes a mocked simulator approach [2] 3. For users for whom the whole cloud system is just a "black box", especially cloud beginners, there is a single integrated Docker container. [3] With the rise of CI/CD and infrastructure as code automation practices, where you just need more or less on demand one or even many versions of the CloudStack API, [3] appears to be a crucial building block in the cloud userspace before just "trying out CloudStack". So it appears that there might be much demand on a Apache CloudStack containerized instance: 1. Demand from potential new adopters, for their "Apache CloudStack to go" demos 2. Demand from DevOps/GitOps/SRE/you-name-it enabled teams who implement their virtual infrastructure for example with Terraform and the CloudStack provider plugin and want to simulate rollout scenarios. However, is this true? * the container simulator hasn't been updated on DockerHub since a couple of years; is there another place in meantime or will this approach dumped for some reason? * there is not so much discussion about this asset on mailing lists; so there is not so much demand as one might assume? What do you think? kind regards -- Peter Muryshkin Fraunhofer Gesellschaft https://www.linkedin.com/in/muryshkin/
