I need a Debian container that can run containers itself (and has access to systemd). Following this post, I have tried to run
docker run -v /var/run/docker.sock:/var/run/docker.sock --name debian-buster-slim -h 10-slim -e LANG=C.UTF-8 -it debian:10-slim /bin/bash -l
but the container cannot run docker containers. What am I doing wrong?
Related
I have a Docker image named pfa-image (contains a fairly basic Express-based website), a running mongoDB container named pfa-mongo, and a docker volume named image-volume. When I run the following sequence of commands..:
host$ docker run -d --name pfa-container -v image-volume:/images \
--link pfa-mongo:mongodb -p 5000:5000 pfa-image
host$ docker exec -it pfa-container /bin/bash
container:/pfa-site# cd images
container:/pfa-site/images# touch test.txt
container:/pfa-site/images# exit
host$ docker rm -f pfa-container
host$ docker run -d --name pfa-container -v image-volume:/images \
--link pfa-mongo:mongodb -p 5000:5000 pfa-image
host$ docker exec -it pfa-container /bin/bash
container:/pfa-site# cd images
container:/pfa-site/images# ls
...test.txt is missing. What am I overlooking here? I am quite new to docker and somewhat new to Linux.
Thank you!
I have tried using bind mounts and volumes, to the same result.
Im trying to run docker inside jenkins container, i used this command to create jenkins container
docker run -p 8080:8080 -p 50000:50000 -d -v jenkins_home:/var/jenkins_home -v /var/run/docker.sock:/var/run/docker.sock -v $(which docker):/usr/bin/docker jenkins/jenkins:latest
then this command to access jenkins container bash
docker exec -u 0 -it <container-id> bash, whenever i run docker i get this error
docker: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by docker) docker: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by docker)
What is creating this problem and what ways in order to solve it ?
This is not reliable anymore, because the Docker Engine is no longer distributed as (almost) static libraries.
so run docker run -p 8080:8080 -p 50000:50000 -d -v jenkins_home:/var/jenkins_home -v /var/run/docker.sock:/var/run/docker.sock jenkins/jenkins:latest
then this command to access jenkins container bash as root user docker exec -u 0 -it <container-id> bash
Once inside the Jenkins container, simply run this command to install docker inside of the Jenkins container: curl https://get.docker.com/ > dockerinstall && chmod 777 dockerinstall && ./dockerinstall
this command gets the docker quick installation script and runs the script which then installs docker inside of the container
Exit out of the Jenkins container interactive shell, and run the following command to change permissions on “docker.sock” for added security sudo chmod 666 /var/run/docker.sock
solved by downgrading my server OS to Ubuntu 18
I've tried to get access to docker command from a container I got an issue says that
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
the container created using this CMD line :
sudo docker run -p 8080:8080 -p 50000:50000 -v /var/run/docker.sock:/usr/lib/systemd/system/docker.socket --name jenkins-master -d jenkins
Hey Guys the issue was in the socket volume I mean in this section
-v /var/run/docker.sock:/usr/lib/systemd/system/docker.socket
should be change to
-v /var/run/docker.sock:/var/run/docker.sock
I want to run docker inside another docker container. My main container is running in a virtualbox of OS Ubuntu 18.04 which is there on my Windows 10. On trying to run it, it is showing me as:
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
How can I resolve this issue?
Yes, you can do this. Check for dind (docker in docker) on docker webpage how to achieve it: https://hub.docker.com/_/docker
Your error indicates that either dockerd in the top level container is not running or you didn't mount docker.sock on the dependent container to communicate with dockerd running on your top-level container.
I am running electric-flow in a docker container in my Ubuntu virtual-box using this docker command: docker run --name efserver --hostname=efserver -d -p 8080:8080 -p 9990:9990 -p 7800:7800 -p 7070:80 -p 443:443 -p 8443:8443 -p 8200:8200 -i -t ecdocker/eflow-ce. Inside this docker container, I want to install and run docker so that my CI/CD pipeline in electric-flow can access and use docker commands.
From your above description, ecdocker/eflow-ce is your CI/CD solution container, and you just want to use docker command in this container, then you did not need dind solution. You can just access to a container's host docker server.
Something like follows:
docker run --privileged --name efserver --hostname=efserver -d -p 8080:8080 -p 9990:9990 -p 7800:7800 -p 7070:80 -p 443:443 -p 8443:8443 -p 8200:8200 -v $(which docker):/usr/bin/docker -v /var/run/docker.sock:/var/run/docker.sock -i -t ecdocker/eflow-ce
Compared to your old command:
Add --privileged
Add -v $(which docker):/usr/bin/docker, then you can use docker client in container.
Add -v /var/run/docker.sock:/var/run/docker.sock, then you can access host's docker daemon using client in container.
I'm trying to get VirtualBox to run inside of Docker. I'm using this: https://registry.hub.docker.com/u/jess/virtualbox/dockerfile/.
When I run the command:
sudo docker run -d \
-v /tmp/.X11-unix:/tmp/.X11-unix \
-e DISPLAY=unix$DISPLAY \
--privileged \
--name virtualbox \
jess/virtualbox
It adds virtualbox inside a container. When I run sudo docker start container_id, it echoes back the container_id but doesn't add it to the running containers. I check with sudo docker ps and it is not there; however, it is there with sudo docker ps -a.
What am I doing wrong? I get no errors either.
EDIT: I'm running Docker in Ubuntu 15.04 (Not inside VirtualBox)
You have to let docker to connect to your local X server. There are different ways to do this. One straight way is running xhost +local:docker before running your container (i.e.: before docker run).