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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665 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 ...
0
votes
1answer
235 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 ...
0
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3answers
502 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 ...
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3answers
216 views

Can Docker Corrupt a Software RAID Setup? [closed]

I read that software RAID should not be implemented on a machine that also has ESXi virtual machines running. Does this mean that I would want to avoid LVM and or LXC/Docker containers as well on this ...
4
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2answers
2k 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 ...
4
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1answer
2k 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 ...
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0answers
36 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
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0answers
945 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/...
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2answers
257 views

LinuxContainers arch-linux double login tty

Since upgrading to LXC 1.0 with the new Arch Linux template when I create a new instance I have a double tty when invoking: lxc-console --name <container> This is the output: Arch Linux 3....
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1answer
1k views

How to run Fedora container on Ubuntu host?

I'm using Ubuntu 14.10 and was trying to run a Fedora container. The container I created via given templates does not work properly. I guess the reason is that systemd is not set up correctly. ...
1
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1answer
5k views

Easy way to transfer files between host and LXC container on LVM

This is an easy task in the case of containers that share the same filesystem but I'm not sure what would be the proper approach for containers that use LVM disks. I know I could use rsync or scp but ...
10
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2answers
8k 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 ...
1
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1answer
552 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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0answers
166 views

lxc / docker wake on lan?

Has anyone successfully implemented "wake on LAN" functionality in a linux container? In my setup each client has his own container for a vpn, but I only want the container to "boot up" when the ...
2
votes
1answer
200 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 ...
1
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0answers
191 views

Share serial port between linux containers

I have a requirement to share a single serial port between two or more linux containers. The LXCs are spawned by the host linux. I explored the option of socat, wherein the host will open a TCP ...
1
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2answers
976 views

LXC container gets 2 IP addresses

I want to have a flat configuration where the host and guest all have their own static addresses on the network. For some unknown reason however, the container is assigned 2 addresses, 192.168.0.110 ...
0
votes
1answer
2k views

How to connect a /dev USB modem in an LXC container?

I've been struggling with various tutorials to hook up my /dev/ttyACM0 in a lxc container. Basically I've tried adding the following line in my lxc config : lxc.cgroup.devices.allow = c 166:* rwm ...
0
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1answer
23 views

Is it possible to set the backing FS directory of a specific LXC?

So they don't all go to the same folder (e.g. /var/lib/lxc)? This would let the user take advantage of other partitions/disks when the default one becomes full. lxc version: 1.0.6
2
votes
1answer
2k views

Vsftpd doesn't work in passive mode in LXC container

I'm beginner in Docker, I have a vsftpd in a Debian and for passive mode I configured in vsftpd: pasv_enable=YES pasv_min_port=65000 pasv_max_port=65000 pasv_address=192.168.1.31 and I show with ...
2
votes
1answer
65 views

Why does the lxc container binds more than the configured ip?

I set up several ubuntu LXC containers on my ubuntu server. They all have a unique IP configured. As they start up, some of them do bind more than the defined IP address. For example container A ...
3
votes
0answers
307 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 ...
2
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1answer
2k views

systemd-journal in Debian Jessie LXC container eats 100% CPU

After creating fresh LXC based on Debian Jessie, on a Ubuntu 14.04, systemd-journal eats all CPU available. lxc-create -n jessie -t debian
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0answers
40 views

(Unexpected?) blkio controller behavior

I'm using docker 1.4.0 with lxc-1.0.6 and cgroup-lite-1.1.5 on Ubuntu 12.04. I have 3 hard disks (/dev/[sdb-sdd]) that I write to from 3 distinct containers. They have only one XFS partition, mounted ...
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0answers
31 views

less doesn't work in LXC container

I'm experiencing some trouble running less and expect inside LXC container (whether using console or SSH) Expect won't work before I won't add an "interact" anywhere in the script, and less doesn't ...
0
votes
1answer
458 views

Why port 22 redirection causes lxc containers to ssh to host?

I have a host A on which I have 2 lxc container (X and Y). I originally had port 22 on my host (A) forwarded to X. Using this configuration, I wasn't able to ssh out of the container X and when ssh-...
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votes
2answers
8k views

LXC container not starting

My CentOS LXC containers are not starting anymore on an Ubuntu 14.10 machine. I think that the problem started after a reboot, but I am not sure. I had a similar problem after an yum update, when the ...
1
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3answers
603 views

Missing packages after clean Debian install

I've just installed a clean version of Debian (Wheezy) using the netInstall image. I feel like there's a lot of missing package (that are usually installed by default when I used to use the full ...
0
votes
1answer
230 views

LXC container clone has no network and SSH stopped

I was having this networking problem with LXC containers (question and answer here:bridging LXC containers to host network with different IP range) and if I have found a solution, I still have not ...
23
votes
5answers
27k views

Docker containers can't resolve DNS on Ubuntu 14.04 Desktop Host

I'm running into a problem with my Docker containers on Ubuntu 14.04 LTS. Docker worked fine for two days, and then suddenly I lost all network connectivity inside my containers. The error output ...
1
vote
2answers
665 views

bridging LXC containers to host network with different IP range

I'm pretty new to linux, and I have been struggling with a problem for the past week or so... I am trying to setup a cluster of LXC containers on a workstation (host) which is has IP 192.168.10.33 ...
0
votes
2answers
772 views

could not create lxc container where linux distribution is different than the linux host?

My linux host is ubuntu 14.04 x64. I tried to create a centos lxc container sudo lxc-create -n centos -t centos but return errors Host CPE ID from /etc/os-release: 'yum' command is missing ...
1
vote
1answer
224 views

How do base linux distributions differ from the same distro on a VPS

I have centos 6.5 vps hosted by a 3rd party. I had planned to install docker on the vps but started to recieve lxc-start errors. This was wierd as I installed the docker without issue on a Vagrant box ...
2
votes
2answers
716 views

How do I configure LXC to allow the use of SCHED_RR in a container?

Any ideas on how I can configure LXC/cgroups, to allow the use of SCHED_RR for applications in a container? On the internet I have seen mention of unmounting the cpu-cgroup, I have tried that, ...
1
vote
1answer
259 views

Running tor on lxc-based virtual infrastructure

I tried to set up a tor relay node on my server running debian squeeze with linux containers for better maintainability. Installing from main repository and tor repository failed. In debug.log there ...
0
votes
0answers
72 views

Can I create separate bridges for every lxc user?

I have successfully created unprivileged lxc containers for one user on a system. All of those containers use the default lxcbr0 bridge. Now I want to allow other users on the system to create ...
5
votes
4answers
187 views

Setting the noatime flag for filesystems inside an lxc container

My host filesystem is ext4 mounted with the noatime flag. But inside an lxc-container, the flag is absent. Here's the output of mount on the host: /dev/sdb1 on /home type ext4 (rw,noatime) And ...
12
votes
3answers
5k views

Mount Docker container contents in host file system

I want to be able to inspect the contents of a Docker container (read-only). An elegant way of doing this would be to mount the container's contents in a directory. I'm talking about mounting the ...
7
votes
6answers
3k views

How to auto-start unprivileged lxc containers?

On Ubuntu 14.04, I have created an unprivileged container that I can manually start and stop. But I would like this to start and stop along with the system. I have added the following to the ...
1
vote
0answers
518 views

lxc command always “get error 4 in libc-2.12.so”

I've tried several time to find out why suddenly my LXC not working, I use dmesg | tail it shows: lxc-start[2777]: segfault at fffffffffffffffc ip 000000390347b82c sp 00007fffd9046c18 error 4 in ...
1
vote
0answers
313 views

How to change docker lxc/cgroup configuration at runtime

I would like to change docker lxc/cgroup settings while a container is running. As an example, if I launch a container like this: docker run --lxc-conf="lxc.cgroup.cpuset.cpus = 0" ... How do I ...
2
votes
0answers
108 views

LXC containers act differently on difrent servers [closed]

I have two physical servers A and B. I wanted to upgrade them from Ubuntu 12.04 to 14.04. Here is my current setup (if I'm left out any info here, let me know and I'll add it): Server A: Ubuntu 12....
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vote
0answers
364 views

Publish or forward ipv6 port range to Docker container

I'm building a IPv6 enabled FTP container based on pure-ftpd and I have the problem that passive mode needs the client to connect on any port in the range of 30000 to 50000 to the server on the ...
2
votes
1answer
1k views

Can a Docker container uses the full CPU power and memory of the host OS?

I am new to Docker, but I have experience of using VM and hypervisor. Referring to Docker introduction and this image, Docker containers are isolated but share the same host OS. If we deploy only 1 ...
3
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 ...
11
votes
3answers
4k 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
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2answers
294 views

What is Linux containers after all? [duplicate]

I've been reading many documentations on Linux containers. I also tried it out the CentOS way and the Ubuntu way . Wikipedia says it is an operating system–level virtualization. ...
0
votes
2answers
5k 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 ...
1
vote
1answer
232 views

LXC networking not giving outgoing connection

I have a LX container on Ubuntu 13.04 which has worked flawless for the last 161 days. I restarted the host and started all the LXC's and I'm allowed to connect to the LXC containers from the outside. ...
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votes
1answer
266 views

OpenVZ Web panel: no such file to load when add physical server

I'm trying to use on my (testing) lxc server. I've on my server "potager.local": root@potager:~# lxc-list RUNNING FROZEN STOPPED web I've installed OpenVZ Web Panel on it and it ...