Linux Containers (LXC) is a userspace interface for operating system-level virtualization features in the mainline Linux kernel, such as kernel namespaces and control groups (cgroups). These allow multiple distinct user space instances to be run on a single kernel.

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docker - how to run x desktop in a container?

I'm trying to set up my Linux machine to run multiple guest OSes, one of those being a Windows VM, and another a Linux container. The goal here is to prevent me from messing up the host system, while ...
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To what extent does LXC manage configuring the network interface in a container?

In the LXC config file we can specify an IP address for a container: lxc.network.type=veth lxc.network.link=br0 lxc.network.ipv4 = 10.1.0.35/16 lxc.network.flags=up lxc.network.hwaddr= ...
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Subordinate GIDs/UIDs with LXC and userns for unprivileged user?

When using userns (via LXC in my case), you assign a range of subordinate GIDs and UIDs to an unprivileged user. See for resources: subuid(5), subgid(5), newuidmap(1), newgidmap(1), ...
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987 views

How to setup unprivileged LXC container without reboot?

I am writing some bootstrapping scripts, and I can't get usermode LXC containers working on vanilla Ubuntu 14.04 headless without a reboot. Here is what i do. First, I download and install Ubuntu ...
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LXC with both GUI apps and snapshots on unmodified Fedora kernel

I am looking for a tool or library to run LXC that supports: running X applications conveniently snapshotting root filesystems (using a Fedora system with an unmodified kernel), so that I don't have ...
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80 views

LXC: Have rootfs mounted without nosuid

I have the container's rootfs in a volume mounted with the nosuid option. When I start the container, its / mounted is then also mounted nosuid, which breaks programs such as sudo. How can I avoid ...
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23 views

How to calculate LXC load average

How I can calculate or fetch LoadAverage from LXC container? (/proc/loadavg has load from physical server not from vm) Any ideas ?
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28 views

What is “state-object” in cgroups

I am gathering some idea about lxc, kernel name spaces and cgroups. While reading man lxc-cgroup, i find : lxc-cgroup gets or sets the value of a state-object (e.g., 'cpuset.cpus') in the ...
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83 views

Moving a whole server into docker instance (or LXC)

It seems to work, to move an existing install into a virtual machine. Is it possible to move a whole Debian server into a docker instance inside the same machine? I would like to get a docker that I ...
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86 views

Dedicate USB hardware to LXC container

Reading the LXC documentation, it seems possible to dedicate the physical network port eth2 to an LXC container with config something like: lxc.network.type = phys lxc.network.link = eth2 I'm ...
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444 views

Vagrant-lxc container not starting

Firstly I'd like to say that I'm new to LXC and I may have some problems getting the right idea of how the things should work. The thing is I'm trying to start a previously download vagrant-lxc box ...
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87 views

LXC apparmor profile limits executing scripts in /run/*

LXC is blocking a trusted container from running scripts in /run/*, how do I configure LXC to allow scripts to run here?
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283 views

Network in LXC not forwading through a bridge

I've got an LXC container, on the host I've got a bridge between the LXC container and eth0. The LXC container can ping it's Host 10.1.0.5, but can't ping the gateway of 10.1.0.2. The host is able to ...
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Using a bridge, an LXC container can't ping router, but the host OS can

I've got a virtual machine running under virtualbox, and in that virtual machine I've got an LXC container I'm trying to bridge to virtualbox's NAT interface: ------------- ----------- ...
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Why I can not update Linux core in dockers?

When I run apt-get update && apt-get upgrade in container, the core is not starting to update. Yes, I know, containers use the kernel of host machine and can not execute some ...
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NFS permissions across multiple LXC VM's

I recently changed my home server setup from a basic Ubuntu Server installation running everything to a virtualised environment. I am currently running ProxMox type 1 hypervisor, with several VM's. ...
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25 views

SSH/web servers in Linux containers improve security?

Scenario: A 'gateway' machine functioning as a router and firewall, connecting a small LAN to the internet. The machine also runs a webserver (hosting a simple website) and an SSH server, providing ...
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61 views

Implement network bridge as userspace program?

I am looking to do some packet filtering/address rewriting for packets which are coming from and going to a lxc container. After some basic research, I figured the best way to do this is to assign a ...
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85 views

LXC mount CIFS => permision denied

I'm trying to mount a shared folder /disk from local network with cifs to folder test, but I get permission denied. I can ping 192.168.1.x. So what's the problem with LXC?
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87 views

Move lxc container to a different host

I'd like to know, if it is possible to move a lxc container from one lxc host to a different one. Here are the specs of the machines: Current LXC host: Gentoo: Linux 3.7.10-gentoo #1 SMP x86_64 ...
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Is an unprivileged LXC where the host user itself is mapped to 0 less secure of one where one of its subids is mapped to 0, and why?

Instead of creating "common" LXC unprivileged containers where all the users are mapped to (unprivileged) subuid/gid of my host user, I'm considering a mapping where my host user itself will be mapped ...
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37 views

how to tell lxc to not use /usr/share/lxc/templates for making a linux container

This is a follow-up question to How to make a local template for a linux container and point to that Now, in that it seems that a user has to make some changes to /usr/share/lxc/templates in order ...
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89 views

Default lxc networking suddenly stops to work

I've recently installed lxc on ubuntu 14.04. Networking used to work (lxcbr0 being a NAT interface, DHCP configured using dnsmasq) but after a container restart, the networking does not work any more. ...
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What is the correct way to start a container with a given command?

I want to create a set of containers for simulating network traffic. Inside each of the containers, I would like to set a different network delay. Right now I am doing it manually using this command, ...
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How would I get the preprocessed configuration of an LXC guest?

So LXC is installed, guests configured and working, but how would I extract information from the effective LXC configuration of a single guest? Now the naive approach is obvious. Take the output of ...
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27 views

A way to set parameters in the LXC parent cgroups

So I have LXC installed, guest containers configured and all. The LXC containers each go into their own submodule (in cgroup parlance) and each are configured with cpu.shares and also the memory ...
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187 views

How to install graphic capabilities to CoreOs?

I would like to install CoreOs as a base on my desktop machine. Then, I could launch some containers, with eventualy a graphical environnement. So I have to add all the graphic stack: GPU drivers, ...
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96 views

Linux Container LXC Intra Host Networking Issues

I have a problem that I cannot seem to resolve. I have two hosts M and N. A container in host M can ping the gateway, its host and all containers in Host N but cannot ping any co-hosted container in ...
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194 views

Setup public IP address on LXC container

Can anyone tell me how to setup a network interface for each LXC container so that each container can have its own dedicated IP address? Here's what the /etc/network/interfaces file on my host node ...
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151 views

Shorewall on router keeps blocking apt-get update on virtual guest

I have a dual-IP LXC server with several unprivileged containers configured for three users. Each user has his own bridge: lxcbr0, lxcbr1 and lxcbr2. For efficiency, the host runs apt-cacher-ng. Each ...
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49 views

Debian - System (audio) Settings breaking when starting/stopping LXC

I'm rather new to Linux, recently having to start using it to make something for work (controlling Linux Containers). I'm on debian: $ uname -a Linux debian 3.2.0-4-amd64 #1 SMP Debian ...
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969 views

Can a process running in a linux container communicate with another process running on the host OS via IPC?

I have 2 processes A and B. Currently, both A and B are running on the same OS (RHEL6.2) and the processes can intercommunicate via TCP sockets. My objective is to run process B in a Linux Container ...
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466 views

Making an Android container with Ubuntu 12.04 on the Samsung ARM Chromebook : initrd file not found

I'm trying to run Android as guest OS with LXC containers on Ubuntu 12.04 LTS on the ARM Chromebook, reading this tutorial. At some point of the tutorial, it says: Then get the initrd for your ...
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201 views

Containers running on ARM

I've been doing some research and decided to implement OpenVZ since it allows each container to be isolated from other containers, unlike LXC. However, OpenVZ is still not supported for ARM ...
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154 views

benchmarking ftp in 3 methods of virtualization

My Bachelor Final Project is about benchmarking visualization methods with ftp, web and mysql services: installing Debian on xen (para-visualization) kvm and lxc with equal resources config (equal ...
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219 views

vi hangs when run in /dev/console under LXC

I'm running an Arch Linux container from within lxc. The lxc-start command connects to the internal /dev/console, on which I have agetty running using the following command: /sbin/agetty --noclear -a ...
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477 views

lxc networking quesion

I have a similar requirement to the OP of this thread. I want the following configuration: -Physical host (PhyHost) reachable from the network at IP 10.1.101.89 -LXC container (LxcHost) ...
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98 views

lxc-unfreeze does not resume the guest if the host is rebooted

Does a guest that has been frozen with lxc-freeze survive a reboot of the host? I.e. after rebooting the host, can the guest be unfrozen with lxc-unfreeze?
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Installing qemu-user-static and binfmt-support inside an LXC

I'd like to run armhf executables inside an amd64 LXC container. How to do that? update-binfmts --display shows no qemu interpreters.
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246 views

Trouble installing Unity8-LXC on Mint

(I originally posed this on askubuntu but was told it should be here instead.) I want to install unity8-lxc on Linux Mint so I can check out Unity8 without installing it. Mint 17.3 (Rafaela) of ...
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84 views

Possible to install 32-bit LXC container in 64-bit host with multilib support?

Is it possible to run a 32-bit LXC container (i.e. x86_32-based) on a 64-bit host (i.e. x86_64-based)? Does it work at all? What precautions may I have to take to make this work? My kernel would ...
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54 views

LXC GUI wont start

I'm trying to learn how to create LCX GUI containers. I've followed the guide at https://www.stgraber.org/2014/02/09/lxc-1-0-gui-in-containers/ and watched the YouTube clip ...
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74 views

`vagrant up` dies in wait_for_communicator.rb:16:in `block in call'

I followed these steps including common advice to enable NFS in my vagrant-lxc setup for mediawiki-vagrant, but I'm getting stuck in this loop which ends with the lines below as I run REDIR_LOG=1 ...
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59 views

Is possible to have full guest system under host installed via DebootstrapChroot?

My goal is installing Ubuntu 14.04.2 LTS under Debian 7 wheezy with full GNOME Desktop. I know I can use use tools like VirtualBox etc. but it seems like overhead. To be more precise under this Ubuntu ...
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165 views

Virtualization on Intel Edison

I want to do virtualization on the Edison. (Edison has vt-x.) On Yocto linux there isn't anything in the repo that is useful. On Ubilinux there is KVM but there is no kernel module in aptitude package ...
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322 views

how to mount samba dir into lxc container

I want to have access to samba dir inside lxc container. I found, that i can't mount directly, but have to mount samba to host, than use bind mount in container's config. I add ...
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66 views

How do I edit files in LXC?

I have a Centos 6.6 running on lxc. I would like to edit files using Sublime or Gedit but not as a root user. Presently I do a gksudo editor and then open rootfs folder. Is there a better way of doing ...
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171 views

Do I need systemd-logind service on server?

I'm setting up debian 8 lxc container on debian 8. And I see a lot of: [FAILED] Failed to start Login Service. See 'systemctl status systemd-logind.service' for details. when the container starts. ...
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Unable to mount cgroup

I've been searching for a solution to this problem but none was working. I would like to start my LXC container but i need to mount cgroup before. [root@stag-devCentOs ~]# lxc-start -n debianLxc ...
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51 views

Lxc giving error at the time of shutdown

I had installed lxc on my debian wheezy. Now during shutdown it give error /var/lib/lxc/*/status : no such file or directory. it show this line for 50-60 times then got shutdown. why am i getting this ...