linux-containers

I work on an application with different processes and I'm asked to contain those processes for achieving more isolation. The problem is that the processes share memory with a single "hypervisor" process in order to exchange data (they use classic shared buffers). This solution was implemented for performance requirement and because it is running in user-space, so there aren't content switching between user-space and kernel-space. If I'm not wrong is not possible to run more than one docker container inside a single IPC namespace, but I don't know if it is possible that a single docker

I'm not sure if I've misunderstood something here, but it seems like it's only possible to set port mappings by creating a new container from an image. Is there a way to assign a port mapping to an existing Docker container? Fujimoto Youichi I'm also interested in this problem. As @Thasmo mentioned, port forwardings can be specified ONLY with docker run command. Other commands, docker start does not have -p option and docker port only displays current forwardings. To add port forwardings, I always follow these steps, stop running container docker stop test01 commit the container docker commit

I've been using this Docker-image tutum/wordpress to demonstrate a Wordpress website. Recently I found out that the image uses volumes for the MySQL-data. So the problem is this: If I want to backup and restore the container I can try to commit an image, and then later delete the container, and create a new container from the committed image. But if I do that the volume gets deleted and all my data is gone. There must be some simple way to backup my container plus its volume-data but I can't find it anywhere. Thomasleveil if I want to revert the container I can try to commit an image, and then