Hi Ranx, I realy like your point about the overhead of running a JVM in a Docker world ;)
I think Karaf is a very good alternative to reduce this overhead and all the tooling provided by Karaf make it the perfect solution :) "Server->hypervisor->microkernel->JVM->Karaf(!)" Regards, François Papon fpa...@apache.org Le 06/02/2019 à 19:06, r...@enjekt.org a écrit : > > 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 > > > > >
