Questions concerning container in Digital container format, programming, type theory, Operating system-level virtualization, Web container, etc.

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How could I set a file overlay on my whole system?

I need to build and test system components on my Ubuntu laptop and I want to be sure that it won't damage (or replace any my current components) (I plan to build and test gtk, gstreamer and ...
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18 views

Is it possible to use both libvirt and lxc userspace tools?

Libvirt is pretty easy to use and has the bonus of having cross compatibility with other hypervisors. I was curious, is it possible to create a container and manage it with both virsh and lxc-* ...
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1answer
117 views

LXC start error : setup_caps: 2337 unknown capability mac_admin

When i try to start the lxc container created it fails with below error, I have used the Ubuntu template for this template. It seems lxc is unable to drop the kernel privileges it is trying to drop, ...
3
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1answer
114 views

How to modify rootfs of an unprivileged LXC container?

I have configured for namespaces for unprivileged LXC containers using this docuement https://help.ubuntu.com/lts/serverguide/lxc.html#lxc-unpriv I can create and start containers using lxc-create ...
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0answers
950 views

LXC container no outgoing traffic with bridged network and public IP address

I try to setup a LXC container with bridged network on ubuntu 14.04.1, but the outgoing traffic seems to be blocked. Ping another IP than the container's one is not working. Actually I tried this with ...
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1answer
200 views

Lo interface not coming up on boot (upgrade fom 12LTS to 14LTS, work in container mode)

I am using the Linux container , I upgraded from 12LTS to 14LTS recently, however after upgrade, the lo interface cannot be start automatically, and here is "ip link show" 1: lo: <LOOPBACK> ...
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0answers
493 views

Modifying sysctl values inside lxc container

I have made several linux containers using the normal userspace tools (not docker), and I have been setting up a test environment. I want to set up two containers to try out heartbeat, which requires ...
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1answer
4k views

How does kernel support swap limit?

When i run docker info command on my ubuntu 13.04 with kernel 3.8.0-19-generic i got a warning "no swap limit support". How can i solve this? docker info Containers: 10 Images: 37 Driver: aufs ...
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1answer
224 views

docker commands related problem

I tried: :~$docker -d [/var/lib/docker|99d07396] +job initapi() [/var/lib/docker|99d07396.initapi()] Creating server mkdir /var/lib/docker/containers: permission denied[/var/lib/docker|99d07396] ...
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1answer
2k views

lxc containers hangs after upgrade to 13.10

I have 3 lxc containers. They were all working fine on 12.10 and I upgraded the containers with do-release-upgrade on the containers to 13.04 and 13.10 and that worked great. Then I upgraded the ...
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1answer
151 views

LXC: Can I guarantee a certain level of CPU resources to a given container

We're going to use LXC to multi-purpose our hardware while keeping the various applications easy to manage, develop, upgrade, and logically segregated. What I want to know is if I can guarantee ...
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1answer
520 views

block outgoing internet calls from inside a container

This question is not similar to my earlier post. This is pretty simple I think, I just don't know enough about networking and the ubuntu firewall. I followed this article and setup a linux container ...
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1answer
2k views

debootstrap or virt-install Ubuntu Server Maverick fails

Oki so running any kind of variation of debootsrap i get the following error I: Extracting zlib1g... W: Failure trying to run: chroot /lxc/iso/dodo mount -t proc proc /proc debootstrap.log : ...
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2answers
666 views

How can I fully use the chroot I create with debootstrap on a local machine?

I'm running on a Ubuntu 10.04, and installed an 8.04 version in a directory /stuff/hardy sudo debootstrap --variant buildd --arch i386 hardy /stuff/hardy http://archive.ubuntu.com/ubuntu What I want ...