Docker is an application to create containers for applications.

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Can't install man pages on minimal Centos Docker container

I have a minimal Centos 7 Docker image, and I'm trying to get some man pages on it to help in debugging my Dockerfile. Out of the box, it doesn't have much: # man ls No manual entry for ls Per this ...
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1answer
40 views

ssh Connection reset by 192.168.x.x

I'm trying to ssh login from Mac OSX 10.10 into CentOS 7.1 on boot2docker by using public key authentication. The problem is that ssh shows Connection reset by 192.168.99.100 when I login to CentOs ...
2
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0answers
26 views

How to run builds in Docker containers from Jenkins

I am trying to use Jenkins to build a C++ project in a Docker container. I have no problem building in Jenkins, or building in a container outside of Jenkins. Below is what I tried. I am omitting the ...
0
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1answer
25 views

source RPM doesn't seem to install on CentOS with no errors

My experience with CentOS and RPM's is limited so I might be missing something obvious, but I can't seem to figure this out... I'm trying to install Sphinx into CentOS 6 in a Docker image using the ...
2
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1answer
55 views

docker compose create containers without starting them

My docker containers are build with docker-compose and I automatically start them container on my CentOS 7 system using derivatives from the documentation example:: [Unit] Description=condb container ...
1
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1answer
30 views

Unable to find file after adding in Docker

I am new with Docker and I am trying to use ADD to copy a zipped file locally to the container: RUN mkdir /root/foo ADD foo.zip /root/foo/ UNZIP -o /root/foo/foo.zip I then build and run the ...
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2answers
134 views

What is the difference between Docker, LXD, and LXC [closed]

What is the difference between Docker, LXD, and LXC. Do they offer the same services or different.
2
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1answer
402 views

Creating threads fails with “Resource temporarily unavailable” with 4.3 kernel

I am running a docker server on Arch Linux (kernel 4.3.3-2) with several containers. Since my last reboot, both the docker server and random programs within the containers crash with a message about ...
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0answers
8 views

Is there a way to automatically restart docker after updating firewall rules with iptables?

A recent update of iptables and firewall rules caused errors in our app. The culprit was finally found: the docker daemon needed to be restarted. Docker adds own NAT rules to the firewall. A way to ...
1
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1answer
473 views

Why am I getting “Cannot connect to the Docker daemon” when the daemon is running?

The Docker service is clearly running: $ systemctl status docker.service ● docker.service - Docker Application Container Engine Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; ...
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2answers
38 views

Which container implementation docker is using

Docker is based on Linux containers and control groups. But I would like to know which implementation of Linux containers , docker is using? Is it using the native/default (LXC execution environment ) ...
1
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1answer
27 views

Do I need at least 3 machines to be able to work on CoreOS?

This is a strange question, but I can't find an answer to it: can I use CoreOS on one machine? Many guides/docs on the internet mention 3 machines. Or can I use it on 2 machines? I'm familiar with ...
0
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1answer
41 views

Problem installing docker on kali linux?

I want to install MongoDB on Kali linux but it didn't get install. The problem here is explained. Now is a try to install MongoDB using Docker for which I am following this tutorial. Now when I run ...
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1answer
29 views

Cannot start minecraft server on Ubuntu Snappy with docker

I have a Raspberry Pi with Ubuntu Snappy on it. I've installed minecraft server with docker pull itzg/minecraft-server Following the instructions from ...
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0answers
123 views

docker run always fails with “no such file or directory”

Every time that I try to run a container with docker I get the following error: # docker run hello-world Error response from daemon: Cannot start container ...
2
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1answer
221 views

Can't run docker hello-world: mountpoint for devices not found

New to docker. Installed docker from software management tool in mint 17. When I run docker run hello-world I receive: FATA[0000] Error response from daemon: Cannot start container ...
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1answer
14 views

Connect Docker container and host to different network

I don't know if this makes any sense, but is it possible to use WiFi in host but only mobile broadband in a docker image?
4
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1answer
117 views

What is cgroupfs and how is it used with Docker?

In the Docker documentation there is a discussion of options for the native execdriver (https://docs.docker.com/engine/reference/commandline/daemon/). The documentation says The ...
3
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0answers
64 views

curl request to IPv6 localhost gets stuck

A docker container of mine exposes a HTTP interface on port 8500, which is mapped to host port 8500. It is not IPv6 enabled. This still means, I should be able to access it at localhost:8500. IPv6 ...
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0answers
32 views

Building Apache hadoop on fedora 22 - Could not resolve 'archive.ubuntu.com'

I've having an issue with building apache hadoop by Docker 1.9.1 on my fedora 22. I'm getting the following output when executing ./start-build-env.sh for building environment for apache hadoop. ...
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0answers
29 views

Docker(-like virtualization) for non-ephemeral VMs/isolation? [closed]

Until now I used KVM/Xen for virtualization. I heared about docker beeing a light-weight alternative to it. But the official best practices of docker state that docker-container should be ephemeral. ...
1
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1answer
39 views

building docker images makes the Vagrant-managed VBox VM freeze

Folks While researching utilizing Docker images for web apps development I've stumbled upon the following issue. (all commands found bellow are executed inside a Vagrant-managed VBox vm) Create a ...
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0answers
52 views

Bridge interface does not use networkd configuration

I am using Archlinux and Docker. I configured my docker0 interface using networkd because the default subnet used by docker is the same of my school network (172.17.0.0/16). I wrote the following ...
1
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1answer
127 views

How to run source with docker exec?

I wanted to source a file in a docker container running Ubuntu without going inside the container. I used to: docker exec -it CONTAINER_ID bash source FILE Now I wanted to do: docker exec -it ...
0
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2answers
60 views

Docker bash: fork: Cannot allocate memory

I am trying to create 4000+ docker containers via separate demons (To avoid the barrier of 1023 veth’s per bridge). But I am getting bash: fork: Cannot allocate memory error around 1800.I have ...
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0answers
35 views

systemd how to run service after docker.service

I have a service file, which executes a shell script, and the script needs to be executed after docker is started. Here is what I tried, but the script is started without waiting for the ...
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0answers
23 views

Desktop ubuntu edition container with docker

I have Docker installed on my local machine and able to create the Containers of ISO provided by Docker. So, How can i Upload Ubuntu ISO 14.04 Desktop Edition on Docker.
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0answers
42 views

Are docker container security limits limited by the host's security limits?

Lets say that I have a host which has max locked memory set to 64kb: [root@host]# ulimit -l 64 and a docker container running in that host with no limits: [root@container]# ulimit -l ...
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0answers
124 views

Use dpkg in busybox

I am trying to install sensu inside a busybox docker container (busybox:ubuntu-14.04). To do that, I've downloaded the .deb package from the official sensu repositories and now I'm trying to install ...
2
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0answers
74 views

CentOS7 on VMware: How to reach Docker service from Host

I want to access the guests docker services via browser with IP:port/service. For example, I'm running a RabbitMQ, which I want to check. Unfortunately I get a ERR_CONNECTION_REFUSED, when trying to ...
0
votes
1answer
108 views

Rancher: how to add a qcow2 image?

On internet i found this, enter link description here I have created the qcow2 image containing my edited linux vm how to add to docker and see it from rancher vm web menu? Thanks
1
vote
1answer
52 views

How can I know if a command works with pipe?

I am new to Linux shell pipe. The question may not make sense so. I saw this command: docker inspect --format '{{.State.Running}}' $(docker ps -lq) and this: docker ps -l -q|while read cid b; do ...
2
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0answers
62 views

Relocation in a docker volume: svirt_sandbox_file_t and texrel_shlib_t

I run a Docker container with a volume that contains a executable and shared library which requires relocation. I get: error while loading shared libraries: /opt/J9/bin/libj9thr24.so: cannot restore ...
2
votes
1answer
306 views

Docker package not installable from debian, but ok from ubuntu [closed]

There are no official Docker package for Debian jessie. There's a backport, and I have installed it, but when started, it was emitting errors for crucial tasks like running a container. There's a ...
0
votes
1answer
72 views

If I set java bin PATH Dockerfile Jar Command runs but tomcat doesn't

I'm creating a Docker file that FROM's the official TOMCAT 8 docker file and also seeks to use the jar command to extract content from a WAR file so I install openjdk-7-jdk. If I don't set the PATH ...
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0answers
44 views

How to set up syncthing + disco server on Docker?

I'd like to run syncthing in Docker on my Ubuntu 14.04 server. I also want to run my own discovery server. How can I do this? Should they be in separate containers, or share a container? What is ...
0
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1answer
151 views

Breaking out of a docker container

Are there any security risks with allowing users to run docker and mount files he has access to? We have shared network mount where all users home directories reside and we basically don't want ...
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0answers
23 views

How can I make a postgresql and postgis enabled image pgrouting enabled?

I am very new to Docker, the documenatation is awesome, but I have a small difficulty. I need to create a postgresql image that is postGIS enabled. Luckily for me, an image was already created HERE. ...
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0answers
309 views

Installing Docker on CentOS

I'm working through the docker installation guide. Running centos 7. I ran curl -sSL https://get.docker.com/ | sh Output warning: ...
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0answers
12 views

Install rgdal in Debian, with aptitude [duplicate]

I am installing rgdal in a docker container that also contains RShiny. I need some specific set of libraries for installing some packages, but also a downgraded version of the libraries for gdal. I ...
0
votes
1answer
103 views

Why does systemctl start docker with different arguments

I'm running an instance of VMware's Photon distro, which uses systemctl. I want docker to use a TCP port so I can play with the REST API. I used 'systemctl stop docker' and the service stops. I ...
0
votes
1answer
230 views

/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 ...
0
votes
2answers
378 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 ...
0
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0answers
135 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 ...
0
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0answers
81 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 ...
0
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0answers
73 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, ...
0
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0answers
57 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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0answers
103 views

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

I am trying to host Owncloud in a docker container and use the Docker Image l3iggs/owncloud. After running the image I started a new Browser window to configure Owncloud but get an error: (Free ...
0
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0answers
72 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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0answers
171 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 ...