Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [lxc]

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 on steroids”.

1
vote
1answer
493 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 ...
1
vote
1answer
1k views

Proxmox: recreate CT from “.raw” disk image

I crashed a Proxmox 4 server beyond repair and some some of my CTs I don't have a dump file, all I have left is .raw disk image. So my questions are: where is the CT's ".conf" file once /etc/pve has ...
0
votes
2answers
938 views

LXC containers on a OpenVZ VPS

I am trying to run LXC on a VPN that is hosted in OpenVZ, I have tried doing this with multiple image flavours, ubuntu. centos, debian... with no luck. LXC installs correctly but containers fail to ...
3
votes
1answer
5k views

Iptables prerouting based on destination's DNS name?

I've got a question concerning iptable prerouting. I'm not that familiar with networking/routing/iptables so I hope this is not a stupid question, at all. So I ask for your understanding and ...
21
votes
4answers
12k views

Is it possible to start LXC container inside LXC container?

Is it possible to start LXC container inside another LXC container?
17
votes
3answers
19k 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 ...
1
vote
2answers
1k views

why docker not executing init as lxc

Docker is not running init. So services are not started during startup. Lxc runs init during lxc-start.Since Docker is using lxc why it is not running init. What are the advantages of not running init ...
0
votes
3answers
3k views

LXC container network/routing issues

I have been experimenting with LXC virtualisation in order to run virtual machines on a dedicated server, but am having trouble setting up the networking properly. I am using veth bridged networking, ...
1
vote
0answers
1k views

LXC Error -> Failed to reset devices.list on /lxc/103/system.slice/proc-diskstats.mount: Permission denied

unfortunately I'm getting a lot of errors like these ones in my debian 8 LXC-container: Failed to reset devices.list on /lxc/103/system.slice: Permission denied Dec 17 16:34:37 systemd[1]: Failed to ...
0
votes
1answer
78 views

Does LXC support IPSET6+?

I would like to use a new firewall-extension for PLESK on a Proxmox-LXC. Now the support of the firewall-extension wrote me this message: Does LXC support ipset 6+? If not then I wouldn't ...
4
votes
1answer
4k views

lxd container: port forwarding like docker

Is there a way to do port-forwarding in lxd-containers like docker does? I heard some rumours that there is no easy way. According to the homepage of lxd this is their goal: Intuitive (simple, ...
0
votes
1answer
2k views

How to make a drive mount avaialble inside a container?

I intend to use the mount inside the container for a postgres database. I have been unable to make the drive available inside the container. So far I have: mounted /dev/sdb to /mnt/psql on the host ...
1
vote
0answers
72 views

Strange messages in my syslog on Debian

I am getting strange messages on my /var/log/syslog that aren't usual. I am running a Debian Jessie LXC Container inside of a Debian Wheezy machine. But I believe this is not the problem. An example ...
0
votes
0answers
23 views

Controlling Remote Processes from Linux Access Server

I have constructed a HA web cluster in LXD with each major service run within its own container. I.e, 2 x Nginx servers in a container each, 2 x MySQL etc. I would like to add a management container ...
0
votes
2answers
9k views

LXC Container Networking

I just started to experiment with LXC containers. I was able to create a container and start it up but I cannot get dhcp to assign the container an IP address. If I assign a static address the ...
3
votes
1answer
850 views

Bash shell script executing out of order when passed over stdin to LXC container

I am passing the following simple shell script to bash on an LXC container: apt-get update apt-get install postgresql -y sudo -u postgres psql -c 'create database dvdrental;' The actual command I'm ...
4
votes
2answers
1k views

Ubuntu LXC 14.04 Error

I had installed LXC in ubuntu 14.04. I had used an existing template and created a VM by executing the below command. /usr/share/lxc-templates/lxc-ubuntu -p /lxc/vm0 After the installation getting ...
3
votes
3answers
729 views

service apache2 restart leads to “Error: No space left on device”

If I do me@server:/home/me# service apache2 restart on my LXC-VPS (node-server is not under heavy load) I'm getting Error: No space left on device df -h tells me that there is plenty enough ...
2
votes
1answer
6k views

How to migrate a regular LXC container to a Proxmox LXC container?

How do you migrate a regular LXC container (from another or the same server) to a Proxmox LXC container, which can be accessed via the Proxmox web GUI? For example, I have a container created by ...
1
vote
1answer
1k views

Libcontainer VS. LXC driver

What are main differences between these Docker drivers? Why is libcontainer better than LXC driver? Why should we use libcontainer, which are its benefits on practical way?
11
votes
3answers
7k views

Proper way of handling LXC containers on btrfs

Lets say we have one server with lxc installed, and a lxc container used for as a base img /var/lib/lxc/ubuntu_base. For simplicity let's forget the config changes after copying the base img. some ...
1
vote
0answers
296 views

LXC Snapshotting on Ubuntu 15 and BTRFS file backend

i have a dedicated server with Ubuntu 15 Wily and i want to play/study with LXC. My main goal is to snapshot and clone containers without stopping them, and for so i have formatted a partition with ...
2
votes
2answers
1k views

Debian Linux routing additional IP to LXC

I'm trying to route an additional IP of my server from Hetzner to a LXC instance (on Debian Jessie). I've found this guide http://www.jotschi.de/technik/2012/04/18/hetzner-lxc-linux-subnet-...
1
vote
1answer
685 views

Ipv6 over bridged network stops working after some time (Ubuntu LXC)

i hope you can help me. I am running several Linux Containers on a bare metal server which is provided with an Global Ipv6 address as well as an 64-bit network by my provider. I have configured IPv6 ...
0
votes
2answers
866 views

Deny usage of host consoles/ tty to lxc container

I'm running Ubuntu 12.04.5 LTS (lxc package 0.7.5-3ubuntu69) with a single lxc guest. Everything works fine, except the lxc container seems to use/ mess with the hosts tty devices. As soon as the ...
3
votes
1answer
961 views

How to make a device node persistent in a LXC

I need /dev/fuse inside a LXC. cgroups are properly configured, i.e. I can manually create the device node and everything is fine - until I restart the container, then the node is gone. Of course I ...
13
votes
3answers
10k views

Linux containers (LXC) on Red Hat/CentOS EL6 - lxc-create versus libvirt?

It's tricky trying to stay within the good graces of Red Hat and still plan for system longevity... I've been a proponent of Linux Containers (LXC) for over a year. My initial installations were ...
2
votes
1answer
42 views

libvirt lxc container won't use statically assigned address at startup

I have an LXC OS container (CentOS 7) configured via libvirt (CentOS 7): <domain type='lxc'> <name>lxc-test1.example.com</name> <uuid>5a715193-55ef-49d7-a4f6-ac5c27bce838&...
4
votes
2answers
3k views

LXC networking with public IP

I have installed LXC in ubuntu server 12.04 using this link. It was installed successfully and i am able login using ubutu/ubuntu as username and password. Then I tried to setup network for LXC ...
3
votes
2answers
2k views

Enable SELinux on Centos7 LXC container with Ubuntu 14.04 host

I'm trying to setup an LXC container for testing which is running CentOS 7 with SELinux enabled to meet the requirements for a test I'm trying to run. Despite all my efforts, I'm still unable to get ...
15
votes
2answers
16k views

Running containers inside a virtual machine?

It is my understanding that containers are much more lightweight than VMs because they do not virtualize the hardware but instead just isolate the software running in them from software running in ...
0
votes
1answer
526 views

Change shell prompt based on container name?

I have been doing a lot of work using Linux containers, and I keep forgetting which of the terminals on my screen is running inside which container, particularly when I leave them open overnight. How ...
0
votes
1answer
408 views

Forwarding all traffic coming into eth0 on host to eth1 on LXC container

I'm trying to monitor all the traffic coming into my computer using software running in an LXC container. The software on the LXC expects to be monitoring eth1. Thus, I would like to Create an ...
3
votes
0answers
402 views

/dev/ttyS0 in lxc container

How to set up lxc to get /dev/ttyS0 in lxc container. I add # /dev/ttyS0 lxc.cgroup.devices.allow = c 4:64 rwm into config but nothing works - If I add manually mknod in running container ...
0
votes
1answer
639 views

lxc - how to make a mount survive an external unmount / mount (eg. sharing folders on a USB key)

I have an LXC container, where I setup the fstab to use a directory situated on an external usb disk. I need this because I use this container for disk intensive computations on my laptop, and I need ...
5
votes
0answers
971 views

Make LXC containers directly accessable with ipv6

First off I have a special IPv6 address allocated to my dedicated server, just 1. A ::1/128 one. But I can assign addresses to eth0 (eg ::2/128, ::3/128, etc). Now I would like to run LXC containers ...
7
votes
1answer
1k views

Do I need a CPU that supports Virtuallization to do Containerization?

I've read that Containerization is cheaper than virtualization; I know that containerization uses less resources than virtualization since there's only one OS involved and no virtualized hardware. ...
1
vote
6answers
7k views

Can Docker help me install Oracle 11g database on Ubuntu?

We are struggling with a common problem of trying to provide an Oracle 11g instance for our developers to test with. Our standard build agents are based on Ubuntu 12.04 but Oracle supports only RedHat ...
2
votes
1answer
990 views

Running LXC and Docker on the same host

I'm running a private server for a some time now and back when I set it up, I used LXC to separate the different services from each other. About a month ago I've started to use docker (for work as ...
-2
votes
1answer
256 views

Link containers on cockpit

I think this is a pretty common scenario, but I don't seem to find a solution. Given: 1. A container with an application that requires a database, 2. A database container; I need to link those ...
8
votes
2answers
25k 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-...
1
vote
1answer
2k views

linux container bridge port forwarding?

How to setup linux container bridge port forwarding? I start using LXD, and looks like their policy is to setup port-forwarding with OS base unlike docker. I want to build a web server, so 80 port ...
1
vote
3answers
3k views

How can I install multiple Atlassian applications in a single server?

Ok, this is a two-part question. I got an unmanaged VPS with CentOS from a hosting company in order to install several Atlassian tools, however, I ran into the problem that when starting a second ...
4
votes
0answers
318 views

What is the best practise to autostart unprivileged lxc containers on Ubuntu 14.04 64bit? [duplicate]

The current implementation of the LXC technology deals nicely with an issue of starting the privileged containers upon system start.. Users of the unprivileged containers (which arguably promise ...
0
votes
1answer
613 views

Nginx forward ssl to ISPConfig lxc container

I am having issues with https connexions to the ISPConfig admin panel (port 8080). My setup is relatively standard. I own a physical host, which routes all traffic on common ports to an LXC container ...
4
votes
2answers
5k views

LXC container shows host's full RAM amount and CPU count

I've been using LXC containers for a few years and have recently expanded the types of applications that run inside of container environments. I'm starting to limit resources at the container level ...
10
votes
1answer
7k views

How to create /dev/tun device inside unprivileged LXC container?

This question is similar to No tun device in lxc guest for openvpn . The LXC has evolved and the unprivileged LXC containers were introduced recently that offer another layer of security against ...
0
votes
0answers
60 views

Prevent container from shutting down at console exit

As the manual clearly states, an LXC container automatically destroys (shuts down) itself when you exit the console. However, we're using these machines as servers (sshd, sometimes apache, ...) and I ...
4
votes
0answers
2k views

Unprivileged lxc container as root

I have successfully been able to run privileged lxc containers (as root). My system: uname -a Linux ruby-dev 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/...
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 ...