Docker container for nodes?

[loth]

Hello,

Has any work been done on a node image?

Thanks.

[weizhouapache]

@loth
do you mean the docker image for cloudstack-agent service ?

I wonder how the cloudstack-agent process in docker container perform some command on the kvm host, for example virsh, qemu, some scripts, shell commands.

[loth]

Yeah for the agent service, basically so we can dockerize a full hypervisor

Openstack does this in this project https://github.com/openstack/kolla maybe worth a look?

[weizhouapache]

Yeah for the agent service, basically so we can dockerize a full hypervisor

Openstack does this in this project https://github.com/openstack/kolla maybe worth a look?

@loth
interesting

as I understand, some services like cloudstack-agent, libvirt (and other dependencies) are running in the container, while vms are running on the hypervisor, is it right ?

[loth]

Yes i believe they expose the qemu-kvm device to a special container which houses the VMs

[weizhouapache]

I see. you want a docker container to mock a kvm host and create vms inside it, right ?
for test purpose, it should be feasible. I think nobody will use it in production 😄

[weizhouapache]

Maybe I am wrong

cloudstack agent looks like a combinaton of nova, neutron, it also manages volumes ( by libvirt or access storage directly).

It looks kolla can create containers for libvirt and openvswitch. I am able to manage vms on a kvm host using libvirt.
However, for neutron and storage, I do not find a doc saying they can use containers .
https://docs.openstack.org/kolla-ansible/latest/reference/index.html

If we run cloudstack-agent in a container, it is difficult to manage the network and storage configurations.