Public bug reported: Binary package hint: lxc
Linux containers fail to start on Karmic EC2 instances. Here's how to reproduce the problem: - Start up an instance of ami-5b1af932 (the current 32-bit EC2 AMI from http://uec-images.ubuntu.com/karmic/current/) - Log in - sudo apt-get update - sudo apt-get install lxc - Attempt to mount the cgroup file system (required for LXC), create a container, and run an application in it using the series of commands below: ubu...@domu-12-31-39-0a-d5-f6:~$ sudo mkdir /cgroup ubu...@domu-12-31-39-0a-d5-f6:~$ sudo mount -t cgroup cgroup /cgroup ubu...@domu-12-31-39-0a-d5-f6:~$ sudo lxc-create -n foo ubu...@domu-12-31-39-0a-d5-f6:~$ sudo lxc-execute -n foo /bin/echo hello On the EC2 instances, the last command prints the following error: lxc-execute: failed to clone(0x2c020000): Invalid argument lxc-execute: Invalid argument - failed to fork into a new namespace lxc-execute: failed to spawn '/usr/lib/lxc/lxc-init' On a raw hardware install of Karmic server, the commands work fine and the lxc-execute prints "hello". I think this may be due to kernel config differences. In particular, lxc-checkconfig shows a lot of things as disabled on EC2: ubu...@domu-12-31-39-0a-d5-f6:~$ lxc-checkconfig Kernel config /proc/config.gz not found, looking in other places... Found kernel config file /boot/config-2.6.31-302-ec2 --- Namespaces --- Namespaces: enabled Utsname namespace: enabled Ipc namespace: enabled Pid namespace: disabled User namespace: disabled Network namespace: disabled Multiple /dev/pts instances: disabled --- Control groups --- Cgroup: enabled Cgroup namespace: enabled Cgroup device: disabled Cgroup sched: enabled Cgroup cpu account: enabled Cgroup memory controller: enabled Cgroup cpuset: enabled --- Misc --- Veth pair device: enabled Macvlan: enabled File capabilities: enabled In contrast, on my raw hardware install, only "user namespace" and "cgroup device" are disabled. ** Affects: lxc (Ubuntu) Importance: Undecided Status: New ** Tags: ec2 linux lxc -- Linux containers not working on EC2 https://bugs.launchpad.net/bugs/471615 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
