LXC short for (Linux Containers) LXC is an operating system-level virtualization method for running multiple isolated Linux systems (containers) on a single control host. LXC is the userspace control package for Linux Containers, a lightweight virtual system mechanism sometimes described as “chroot ...

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0
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2answers
399 views

Accessing LXC container's filesystem from host

I'm looking for a way to access the container's rootfs from the host. While I could just use the directory that was passed to lxc.rootfs, it doesn't have the mounts that the container has, so there ...
2
votes
1answer
1k views

lxc container not getting default route

I'm running Ubuntu Precise. I understand that my current version of lxc doesn't support gateway/default route assignment (lxc 0.7.5-3ubuntu67). I've been trying like heck to get a few lines to execute ...
2
votes
2answers
418 views

LXC and port overlapping

I've done a lot of searching on Google and browsed what I could find on Server Fault, but can't find any solution to this. I have a server that is running LXC containers (2 for right now, both Ubuntu)...
1
vote
1answer
464 views

Cannot start XML defined Linux Container, faulty cgroup mount

Using ubuntu 13.04 latest; i've installed lxc and various other tools Here's my XML definition: <domain type='lxc'> <name>vm1</name> <memory>500000</memory> <...
2
votes
1answer
1k views

Allowed cgroup devices for libvirt/lxc container

I want to allow my libvirt/lxc containers to use tun/tap device. In order to do so I for a running container I can add it to the allowed devices by: # echo "c 10:200 rwm" > /sys/fs/cgroup/devices/...
1
vote
1answer
774 views

Configuring bridging between a linux containers (LXC) interface and the hosts

I want to run 2 LXC containers under a host, and I want each to have their own IP on the network, let's say the host has 10.10.1.10 and the containers have 10.10.1.11 and 10.10.1.12. Does my setup ...
3
votes
1answer
849 views

Managing LXC containers in EC2

I have an EC2 instance running inside a VPC. I need to run a service inside a LXC container started in that instance and to make the service available to the outside world. I have therefore created a ...
5
votes
4answers
9k views

LXC, Port forwarding and iptables

I have a LXC container (10.0.3.2) running on a host. A service is running inside the container on port 7000. From the host (10.0.3.1, lxcbr0), I can reach the service: $ telnet 10.0.3.2 7000 Trying ...
8
votes
3answers
358 views

Technology for short-lived private VMs

I'm trying to build a system that will run short-lived (CI and test builds) of software components, it's mandatory according to my requirements that each live on a private host. I'm taking that ...
4
votes
3answers
4k views

Running systemd based container in LXC

I'm currently trying to run an Arch Linux container using LXC on an Ubuntu 12.04 host. Arch Linux has recently migrated to systemd, which according to a variety of places has some problems operating ...
2
votes
1answer
1k views

Mounting a network file system inside LXC on Ubuntu 12.10

On an Ubuntu 12.10 server, I created an Ubuntu cloud lxc container. In the /var/lib/lxc/MY_CONTAINER/config file, I uncommented the line: lxc.aa_profile = unconfined and started the container. ...
0
votes
1answer
658 views

Different behavior of ubuntu-cloud image between LXC and libvirt-lxc

I've used ubuntu-cloud template as LXC containers, and they all worked fine. Recently I switched to use libvirt-lxc, and followed instructions in Ubuntu document, but the image initialized differently ...
1
vote
1answer
2k views

lxc vm access outside the host

On Debian 64bit, I configured a lxc like this : host ip : 172.16.0.25 vm guest on this host : 172.16.0.44 I've done the bridge on my host auto eth0 iface eth0 inet manual up ...
1
vote
1answer
360 views

lxc-console only works once

I have a debian-squeeze host-system on which I have installed lxc. i created a (squeeze) container, and started it. then I'm trying to get inside the container with lxc-console. everything works fine ...
3
votes
1answer
2k views

eth0 on lxc does not work

I am facing some problems that the eth0 on lxc container does not work. I already tried Bridging LXC containers to host eth0 so they can have a public IP, but it does not help. On my host (Ubuntu on ...
0
votes
1answer
499 views

Move an LXC container to a dm-crypt/LUKS filesystem

I need to move a container to a different filesystem, specifically a subdir of an already mounted LUKS/dm-crypt home dir. I tried moving it there and then bind mounting or symlinking it to /var/lib/...
0
votes
2answers
529 views

Networking (dhcpcd) under LXC

I would like to boot an Arch Linux instance using LXC. Just about everything works, but I'm encountering the following error when trying to configure an interface using dhcpcd: # dhcpcd eth0 dhcpcd[...
1
vote
0answers
560 views

Set up LXC container as VM with its own IP address

I need to set up a fenced environment in on Ubuntu server. The actual use case is to have two separate websites running on the same physical box, but I want one of those websites running in a fenced ...
2
votes
1answer
188 views

NAT for static private addresses

Could someone please help me out with the following scenario: I have a machine that hosts 3 lxc containers, and acts like a router for them. The LXC containers have private ip addresses set on the ...
3
votes
1answer
180 views

OpenVZ has vzctl exec, what is the equivelent for lxc

I'm switching from OpenVZ to lxc. The one thing that is really bugging me is that I can't find a lxc alternative to vzctl exec. Before on OpenVZ I could do vzctl exec 1033 restart nginx. Now, all I ...
1
vote
1answer
3k views

How to create a LXC container on LVM from an OpenVZ template?

I have a lot of experience using OpenVZ, but I want to give LXC a try on a server where perfect isolation is not a concern. The main reason for the switch is preferring Ubuntu Server LTS as the base ...
7
votes
2answers
18k views

Bridging LXC containers to host eth0 so they can have a public IP

UPDATE: I found the solution there: http://www.linuxfoundation.org/collaborate/workgroups/networking/bridge#No_traffic_gets_trough_.28except_ARP_and_STP.29 # cd /proc/sys/net/bridge # ls bridge-...
6
votes
2answers
11k views

Limit memory and cpu with lxc-execute

I would like to isolate processes using lxc-execute. Is it possible to set bandwidth, cpu and memory limit? I had a look in the man of lxc.conf but I did not find it exhaustive.
1
vote
1answer
113 views

Chef-Server fails startup

I've installed chef-server from the chef apt repository using these instructions and everything seems to work until I try to start chef-server. I'm running Debian Squeeze in a Linux container (LXC). ...
6
votes
2answers
2k views

lxc bandwidth control using tc

I am trying to restrict bandwidth inside my containers. I have tried using the following commands , But I think it is not getting effective. cd /sys/fs/cgroup/net_cls/ echo 0x1001 > A/net_cls....
8
votes
3answers
9k views

No tun device in lxc guest for openvpn

I am trying to set up an openvpn server inside a lxc guest. However, it seams there is no tun device available in the container. Starting openvpn inside the container gives me this error: Tue Sep 18 ...
0
votes
2answers
1k views

howto remove udev from centos(lxc-guest) without dependencies

i downloaded a openvz template for my lxc server to create a new centos 6.3 guest. Now the guest is not starting because udev is hanging in the boot process. Last time i didn't had this problem but ...
0
votes
1answer
440 views

Debian bridged network between virtual machines

I installed two linux containers (lxc) in a debian squeeze server so the environment is as follows: Physical server: 192.168.2.200 Linux container 1: 192.168.2.201 Linux container 2: 192.168.2.202 ...
1
vote
0answers
110 views

Why can't rsyslogd find libgcc_s.so.1?

Scenario: Running a debootstrapped Ubuntu 11.4 lxc guest on a Ubuntu 12.4 lxc host. Inside the lxc guest, rsyslogd is constantly crashing with SIGABRT stating: libgcc_s.so.1 must be installed for ...
3
votes
1answer
330 views

Link all LXC node APT caches to the host machine's APT cache

I have a number of LXC containers (ubuntu template) which all have their own separate APT caches. /var/lib/lxc/*/rootfs/var/cache/apt/archives/ I would like to have these linked to the host ...
2
votes
1answer
2k views

“mount error(13): Permission denied” only in LXC container for CIFS/Samba share

I have a samba share that mounts just fine under the Ubuntu 12.04 host: root:~# mount -t cifs -o credentials=/var/lib/lxc/vpn/rootfs/etc/samba/desktop.credentials //desktop/Media /media/Media But ...
1
vote
1answer
236 views

installing debian with debootstrap and lxc instead of debootstrap and chroot

So I need to 'install' (or rather prepare a root filesystem for) a Debian system and that was done with debootstrap and chroot before. However due to the not-very-existent isolation of chroots (with ...
2
votes
1answer
943 views

firehol (firewall) with bridge: how to filter

I have two interfaces: eth0 (public address) and lxcbr0 with 10.0.3.1. I have a LXC guest running with ip 10.0.3.10 This is my firehol config: version 5 trusted_ips=`/usr/local/bin/strip_comments /...
33
votes
4answers
28k views

How to disconnect from lxc-console

I'm working with lxc in Ubuntu 12.04, and it's really great. However, I am unable to disconnect from a lxc-console session after I've connected. I read somewhere that Ctrl-aq will disconnect me from ...
1
vote
1answer
416 views

Linux Container conversion to Vagrant and back

The situation is the following: we have an lxc (linux-container), which contains a Debian Squeeze distribution, built up with a preseed file. We wanted to add some extra packages (packages for the OMF ...
3
votes
1answer
676 views

fail2ban on server with LXC Containers

The issue is modprobe and iptables don't work inside an LXC Container. LXC is the userspace control package for Linux Containers, a lightweight virtual system mechanism sometimes described as “...
2
votes
2answers
3k views

When I restart my LXC environment, the container does not re-bind to the IP address

The IP does no longer respond to a remote ping With restart I mean: lxc-stop -n vm3 lxc-start -n vm3 -f /etc/lxc/vm3.conf -d -- /etc/network/interfaces auto lo iface lo inet loopback up route ...
9
votes
1answer
970 views

Can I use a different linux distribution in an LXC container?

We are developing a server product targeted for Debian Lenny (and some others). However, due to driver needs, developers' personal choices etc. we run Ubuntu (12.04) on the hardware. Is it possible ...
1
vote
2answers
581 views

Proper way to expose VirtualBox' machine to network via “one MAC” security locked switch port

Say, we need to expose LXC container (LXC) or Virtualbox VM (VBM) to public network with its own IP-adress (within additionaly assigned network — ADD-net) which is to be routed through main host. When ...
2
votes
1answer
1k views

How to start external programs in “unshare” container, with sending of file descriptors?

With unshare or lxc-execute I can create environments with separate network/mount/whatever namespaces. But starting programs there from outside is not really straightforward. Usually network and sshd ...
2
votes
1answer
687 views

FTP proxy with SSL support

I have a bunch of LXC containers with vsftpd daemon installed on each. I would like to forward/proxy traffic from dom0 server port 21 to particular containers based on ftp user name e.g. user@domain....
2
votes
1answer
1k views

modprobe inside an LXC container

I need to run a WebDAV server inside of an LXC container, but I'm being told that modprobe is not available (even as root). I've seen that this was requested by developers, but how can I get around ...
15
votes
4answers
6k views

Is it possible to start LXC container inside LXC container?

Is it possible to start LXC container inside another LXC container?
3
votes
1answer
2k views

SSH traffic redirect for LXC containers

I use LXC containers for ssh hosting and I would like to redirect SSH/SFTP traffic (using port 22) to the container's private IP address but on a user/IP basis. That is - one source port, many ...
2
votes
0answers
2k views

User not recognized by underlying authentication

I'm running lxc on Linux Mint Debian Edition tracking Wheezy/Sid. I created a container using "lxc-create -t debian -n dev". In accordance with the Debian wiki article on LXC I have mounted the ...
8
votes
2answers
3k views

Is LXC secure enough for VPS hosting?

Right now I'm using Linux VServer for VPS hosting. But it's lacking some functionality I need (ex. cpu usage virtualization, quota support for guests, etc.) so I'm thinking about switching to OpenVZ ...
3
votes
3answers
843 views

LXC container templates?

Is it possible to create an LXC container that you maintain only for the purpose of copying as a template? If so, how does one properly copy an LXC container?
1
vote
1answer
814 views

NTP on main server, and alternative on virtual (LXC)

I am setting up a server with several VPS. I am using LXC. I am thinking it would be better to have only the main server equipped with ntp and have the virtual boxes just get the time from the main ...
1
vote
2answers
848 views

Real life virtual bridge setup on Debian

How do I get the bridge setup done with multipe IP addresses. Ideally, I would have 4 virtual systems each with it's own IP address but also an intranet address (like 10.#.#.#). So that they can ...
0
votes
3answers
250 views

Find ip address of VM or Container using a bridge

I have a virtual machine/LXC container that is using a bridge (on br0) to access the network. On the system that is hosting the virtual machine and the bridge, I would like to be able to tell what ...