Hi Brad I know multiple Karaf use cases: - embedded (I know in trucks, in the ESA spatial station ;)) - on prem - on cloud
About hypervisor/cloud/container, I did a blog about Karaf/Docker/Kubernetes: http://blog.nanthrax.net/?p=849 So, what are you looking for ? A dedicated hypervisor for Karaf (a bit like in Cellar and the kloud initiative I started). By the way about the kloud initiative, the first action around this is to: 1. provide tooling for dev (easily create a custom karaf runtime embedded business code, based on annotations for instance) 2. provide tooling for devops (easily create jar/docker image/tar.gz turnkey to start powered by Karaf) I would be more than happy to chat with you about the target ;) Thanks for bringing the discussion anyway ! Regards JB On 06/02/2019 16:06, r...@enjekt.org wrote: > Is anyone aware of a microkernel running a JVM/Karaf? I think Karaf > could really take advantage of microkernels avoiding the need for > Kubernetes, Docker and so on. Karaf is uniquely qualified for this by > the fact that it has its own hooks to repositories, a console and > monitoring with things like HawtIO. If the JVM/Karaf/Felix is running in > the kernel itself and that is running on the hypervisor, there’s not a > lot of overhead. That’s a stark contrast to the world of > Kubernetes/Docker/VM/hypervisor. > > > > With microkernels and rump kernels getting a lot of attention and > development these days, there seems to be a great opportunity for Karaf > running in a microkernel’s > > > > Camel->Spring Boot->JVM->Docker->Kubernetes->Linux->VM->hypervisor->server. > > Camel K->JVM->Docker->Kubernetes->Linux->VM->hypervisor->server. > > > > Server->hypervisor->microkernel->JVM->Karaf(!) > > > > Recently I was reading a bit more about Camel K. That’s Camel running > directly on Kubernettes sans container – no Spring Boot, Karaf/Felix, or > EAP. It’s a move in the right direction, I think, but as I think about > it Karaf seems uniquely poised to really jump to the front of the line. > James Strachan recently commented that he was concerned about the future > of the JVM due to the enormous overhead of running it in a Docker world. > > > > It isn’t simply that Karaf/Felix can run on a JVM in the kernel space > and avoid all the other overhead. OSGi bundles and Karaf features > essentially allow one to create microservices as groups of bundles that > can be deployed to separate Karaf instances or to the same Karaf > instances. That simply isn’t possible with Spring Boot, Camel K or other > stacks. > > > > If anyone is aware of a microkernel or rump kernel or exokernel running > a JVM/Karaf I’d really appreciate a pointer. > > > > Brad > > > > > -- Jean-Baptiste Onofré jbono...@apache.org http://blog.nanthrax.net Talend - http://www.talend.com
