Re: [openstack-dev] [Fuel] Using host networking for docker containers

2014-08-11 Thread Aleksandr Didenko
Hi, we're running only 3 containers in privileged mode: cobbler, rsyslog and mcollective. Running all the containers in privileged mode is not a good idea for security reasons. Docker manages DNAT forwarding itself, so it does not create any overhead for us. Is there any real benefits of using

Re: [openstack-dev] [Fuel] Using host networking for docker containers

2014-08-11 Thread Matthew Mosesohn
Moving to host networking would reduce our ability to do zero downtime upgrades in the future. It means you must kill the old container in order to start the new one, rather than allowing for the possibility to remap the network configuration in iptables. It's something we don't have now, but we

[openstack-dev] [Fuel] Using host networking for docker containers

2014-08-09 Thread Dmitriy Shulyak
Hi team, I want to discuss benefits of using host networking [1] for docker containers, on master node. This feature was added in docker 0.11 and basicly means - reuse host networking stack, without creating separate namespace for each container. In my opinion it will result in much more stable