Docker is an application to create containers for applications.

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/var/run/docker.sock: permission denied

I tried to run this docker image which load inside another image. However, I run into /var/run/docker.sock: permission denied on CentOS 6.6 and docker 1.7.1 which I reported here. Which linux ...
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32 views

SSH to docker container is not working

I'm running a Discourse forum software container in an Ubuntu Server, I was able to login to container using the command. sudo docker exec -it app bash And then I've setup password for the root ...
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34 views

Configure firewalld properly to access a subnet of docker containers from outside the host

Background I have a Fedora 22 Server running a docker daemon. For some reason, i want not to use the "docker0" subnet (which masquerades ip, and i do not want to change this), but my own bridged ...
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15 views

Basic minimum requirements for systems with Red Hat Openshift Origin on CentOS?

What are the basic requirements for systems running the Red Hat Openshift Origin infrastructure? I understand that there are many machines involved, there is one that runs Openshift Origin, one that ...
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16 views

gdb attach question

When using gdb to attach to the process. It shows that Could not attach to process. If your uid matches the uid of the target process, check the setting of /proc/sys/kernel/yama/ptrace_scope, ...
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11 views

why does docker use space on the root even with an LVM setup?

I've followed the procedure here to set up docker to use the LVM on CentOS. nonetheless, it's busy using space on the root file system via /var/lib/docker; it managed to fill up the root file system ...
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33 views

Docker Owncloud Cannot create /var/www/owncloud/data

I try to host Owncloud in a docker container and use the Docker Image l3iggs/owncloud. After run the Image i start a new Browser window to configure Owncloud but get an error: (Free translated) ...
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19 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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34 views

Can I cheat the docker run -it session by remapping ctrl+p key?

This is regarding this issue with docker: https://github.com/docker/docker/issues/3519 and http://stackoverflow.com/questions/20828657/docker-change-ctrlp-to-something-else As I understand this, the ...
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22 views

How to redirect roundcube log to stdout

Installed roundcube from source on top of debian. I wanna redirect roundcbe logs to stdout. How to achieve this?
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57 views

TFTP times out when connecting to Docker server

I'm trying to install FOG in Docker (via boot2docker for Windows) at my workplace as a bit of a learning exercise. FOG has a handy little script that installs everything for you, and that works great ...
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882 views

What do the processes inside a Docker container look like?

I've heard confusion come up several times recently around what a Docker container is, and more specifically what's going on inside, with respect to commands & processes that I invoke while inside ...
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49 views

List repositories from private docker registry

i need list/delete image and repositories to my private registry, i tried with: docker search registry.mydomain.com with result: NAME DESCRIPTION STARS OFFICIAL AUTOMATED I have ...
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9 views

How to make roundcube work with pgsql?

roundcube & pgsql are running on different containers docker run --name to-postgres --expose 5342 -e POSTGRES_USER=roundcube -e POSTGRES_PASSWORD=roundcube -d postgres Now how shall I install ...
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25 views

Is it possible to run script while stopping docker container?

I want to run some script inside the container when I execute the docker stop ${ContainerName} Is there any way of achieving that?
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1answer
25 views

Systemd journal plagued with docker messages

I've found that systemd is full of lines like that when I issue journalctl -f jul 09 21:13:47 newhope.belkin.home docker[1430]: time="2015-07-09T21:13:47-03:00" level=info msg="GET ...
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52 views

Is there a way to have OpenSUSE (13.2) boot up without launching the GUI desktop?

What I'd like to accomplish is to have it boot to a script that would download and run a desktop through docker (something like this). We will have dozens of devices that will come pre-installed with ...
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1answer
107 views

ssh asking for passphrase that doesn't have passphrase

I'm trying to build docker image with this docker file and I need to clone some private repositories from bitbucket. FROM ubuntu RUN chsh -s /bin/bash RUN apt-get update RUN apt-get install -y ...
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1answer
31 views

Docker: personal ip but another network

Recently i found this for give to docker a "personal" ip ip addr del 10.1.1.133/24 dev eth0 ip link add link eth0 dev eth0m type macvlan mode bridge ip link set eth0m up ip addr add 10.1.1.133/24 dev ...
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118 views

Docker: i want a “personal” ip for containers

Simple question: under kvm i use a scheme like this SERVER1(slackware with libvirt and kvm) 192.167.0.14 interface BR0(bridged network to eth0) the virtualmachines of kvm take ip static or dhcp ...
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53 views

inconsistent Docker image

Docker images are supposed to be immutable, yet when I import one of my images on another machine, it behaves differently. To reproduce the bug, I will start from a debian-wheezy image built using ...
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2answers
87 views

Which Linux capability do I need in order to write to /proc/sys/vm/drop_caches?

I am trying to clear my filesystem cache from inside a docker container, like so: docker run --rm ubuntu:vivid sh -c "/bin/echo 3 > /proc/sys/vm/drop_caches" If I run this command I get sh: 1: ...
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1answer
29 views

Docker CentOS7 image and locale compilation problems

I'm setting up a Docker image which requires localization support. I also need to patch the pt_BR locale according to comment #21 on this thread. So what I'm basically doing is reinstall glibc to ...
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17 views

How to Transport a Mono Development Environement using Docker

I am developing a Mono Application and i want to run it on several Linux Machines . I have to set up Mono Development Environment on each machine and it can take a lot of time. I read that it is ...
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1answer
58 views

Running a systemd service once a day (on a CoreOS cluster)

I currently have a CoreOS cluster on AWS. The cluster runs multiples containers, mainly for Rails applications. However, one of this container is a pure Ruby app processing a lot of data from specific ...
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73 views

Running tc inside a container

I have a debian-lastest container launched from Docker in interactive mode. I want to simluate network delay on this container, using tc. I was trying to use this command: root@a859600f8ea0:/# tc ...
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141 views

“date -d” command fails on Docker Alpine Linux container

I built Alpine Linux in a Docker container with the following Dockerfile: FROM alpine:3.2 RUN apk add --update jq curl && rm -rf /var/cache/apk/* the build run successfully: $ docker build ...
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0answers
54 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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1answer
79 views

How to enter filesystem on docker container after computer crash?

I had a running Docker container on a computer. The computer crashed due to a power failure. The disk started up right etc, and now I want to go somehow go to the container and "salvage" the data ...
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47 views

docker container manual networking setup not working

I have an application environment where two containers need to talk to each other. container A gets a message from container B, and container A initiates a connection back to container B using the ...
2
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1answer
351 views

'Docker' File System - Compatibility with Symbolic Links

The question is marked in bold if you wish to skip the explanation of our situation. I work as a developer for a server network. We deploy multiple instances of our servers. we have 5 types of server ...
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1k views

Docker says “no space left on device” but, system has plenty of space?

I'm trying to run a docker image that works on other systems (and you can even pull it from dockerhub, if you'd like: it's dougbtv/asterisk) however, on my general workstation, it's complaining about ...
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79 views

firewalld isn't blocking/dropping ports for ports mapped from docker containers

I have firewalld installed and running on my machine. here are my active zones # firewall-cmd --list-all-zones ... drop (active) interfaces: enp2s0 sources: services: http https ssh ports: ...
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1answer
84 views

Automate input to the shell of a program

These days many programs like mongodb, docker etc, have there own shell i.e., if you type docker -i it opens an interactive shell (similarly with mongo and other programs). Is there a way to automate ...
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173 views

mDNS to/from a Docker container

I've made a Docker container which runs a forked-daapd (a DAAP server publishing over mDNS with a single port 3689 for HTTP requests) and exposes the port properly to the host operating system: sudo ...
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2answers
961 views

How to configure Centos 7 firewallD to allow docker containers free access to the host's network ports?

I have docker installed on CentOS 7 and I am running firewallD. From inside my container, going to the host (default 172.17.42.1) With firewall on container# nc -v 172.17.42.1 4243 nc: connect to ...
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129 views

Installing Docker into Vagrant VM failed

I'm using Vagrant and Docker and this problem occurred while i vagrant up my machine, it works fine before: ==> default: Running provisioner: docker... default: Installing Docker (latest) onto ...
2
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1answer
522 views

Getting “Protocol Error” when trying to create a symlink in Docker

I'm trying to setup a symlink, using the command ln -s /var/www/data/cache/widget/overlay/ /var/www/public_html/images/overlay but it outputs ln: failed to create symbolic link ...
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1answer
250 views

Cannot (force) remove directory in Docker build

With this Dockerfile: FROM php:5.4-fpm RUN apt-get -qqy update \ && apt-get -qqy install git \ libcurl4-gnutls-dev \ libmcrypt-dev \ ...
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0answers
252 views

Make docker containers accessible via vpn

I have three physical machine A, B, C, each of them has docker installed. I want to install openvpn server on machine A, and install openvpn client on B and C. B and C will connect to A. I want to ...
2
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1answer
1k views

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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1answer
43 views

Can I mount /usr/src/linux from docker to my session?

I need access to kernel sources from my session. Is it possible? Can I mount it to /usr/src/linux/ ?
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1answer
140 views

Firefox in Docker, failed in isolation

While experimenting with docker, I realized I can run a browser in a container for improved security. I managed to start with a clean Docker Fedora, in which I installed the openssh-daemon package. ...
4
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1answer
309 views

CoreOS can't pull docker container on boot

While following the systemd guide I ran into an issue with this example configuration: [Unit] Description=MyApp After=docker.service Requires=docker.service [Service] TimeoutStartSec=0 ...
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660 views

“exec format error” on docker run

I have a MacBook Pro running Yosemite. On this I have Virtualbox installed with an Ubuntu system running within it. All packages on both are reasonably up to date (within a month of current). ...
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1answer
249 views

CoreOS in Vagrant - interfaces

I'm trying to understand the networking model in CoreOS but I'm having trouble making the operating system bend to my will. The problem I'm facing is that I want to use weave as an overlay network ...
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1answer
179 views

Starting Services without Systemd?

Is it possible to start services on and post startup in CentOS/Fedora distributions without using systemd (systemctl)? If yes, how? Systemd does not work in non-privileged docker containers; ...
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82 views

Error in Installing eclipse

I am running sudo apt-get install eclipse-platform command inside Docker Then ran eclipse I get the following error find: `//.eclipse': No such file or directory find: `//.eclipse': No such file ...
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1answer
2k views

How can i kill docker containers

I have seen many times i am not able to stop conatiner docker stop hashid Error response from daemon: Cannot stop container 1fdfd212ebb7: no such process FATA[0000] Error: failed to stop one or more ...
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65 views

How to use stdout/stderr from multiple program

I'm working with Docker-containers. An important part of Docker is to log error, etc., to stdout/stderr. For example, I want to run the following program by using this command: nginx -g "daemon ...