I am behind a corporate firewall, running on Windows 7. I believe that I have gotten past any proxy issues (at least as far as accessing the container for which I'm trying to install.)
At this point I'm trying to execute docker's run command which 'acquires' the tensorflow package an installs it on my system.
$ docker run -it -p 8888:8888 gcr.io/tensorflow/tensorflow
C:\Program Files\Docker Toolbox\docker.exe: An error occurred trying to connect:
Post https://192.168.99.100:2376/v1.23/containers/create: Service Unavailable.
See 'C:\Program Files\Docker Toolbox\docker.exe run --help'.
I'm new to docker, (obviously) but I see that the 192.168.99.100 default docker container exists and is running.
I do see documentation regarding the 'create' service endpoint. I'm at a dead end. Any help is appreciated.
-gene
when you type docker command docker client try to connect with your local docker service. And in linux world you need a superuser privileges to connect client and service.
I don`t run docker on windows, but may be you need run docker as Administrator. like linux
sudo docker run ...
Related
I want to install a package by docker, following instruction in: https://dynamic-fba.readthedocs.io/en/latest/installation.html#installing-from-source
I installed ubuntu and then Docker. But I don't understand what I need to do next. There it is said to type (docker run -it -v ${PWD}:/opt/examples davidtourigny/dfba python3 examples/example1.py). I excatly type it in ubuntu but I get this error:
docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.
See 'docker run --help'.
Using alternative method of dockerfile, I also get error. I don't know how to make use of make build, but used build instead following tutorials on the web.
It's my first time using Docker and I don't know what to do.
Any help is very appreciated.
The Docker application has two components, a back-end server, and a front-end cli. This way you can do cool stuff like control Docker remotely or have orchestration frameworks that manage multiple Docker nodes over the network like Kubernates.
For security, the Docker back-end server is not exposed on a normal TCP port but it uses a unix domain socket (Linux magic that makes a file act as a port) at unix:///var/run/docker.sock.
When you execute docker run -it ... the cli application will attempt to connect to the backend server, but it looks like the daemon/server is probably not running.
Try to check that daemon is running. If you are using systemd you can check with
systemctl status docker and start if is stopped with systemctl start docker finally it might be good to enable it to make sure it starts automatically on reboot, you can do that with systemctl enable docker
Make sure to start docker service (you can either go for systemctl start docker or reboot your computer).
Once this is done, it is likely that your user has no permissions to communicate with Docker without sudo. Docker has privileged access to your hardware and therefore giving a user the docker group is required for security reasons.
Run:
sudo usermod -aG docker $USER
groupadd docker
docker run hello-world
This will add you to docker group, reflect the changes inmediately and run a sample image from Docker.
If all was okay, the last command should tell you "Hello from Docker".
I am trying to use the python in a docker container on a remote machine as the interpreter in Pycharm. Since that is a mouthful, here is a diagram:
There is a Jupyter Notebook running in the container, which I am able to connect to through my local browser (although this is just for testing the connection). The command I am using to launch the Docker container is
docker run --runtime=nvidia -it --rm --shm-size=2g -v /home/timo/storage:/storage -v /etc/passwd:/etc/passwd -v /etc/group:/etc/group --ulimit memlock=-1 -p 8888:8888 -p 7722:22 --ipc=host latest:latest
I can forward the port 8888 which the Jupyter notebook is running on with ssh -L 8888:0.0.0.0:8888 BBB.BBB.BBB.BBB and thus use it on the local machine. But I don't much like using Jupyter for developing and would like to use the Python interpreter in the Docker Container in Pycharm.
When I select "Add Python Interpreter" in Pycharm, I get the following options:
The documentation for Pycharm suggests using the "Add Python Interpreter/Docker" tool which looks like this:
However the documentation doesn't say how to set up the Docker container and the connections if the Docker is on a remote machine.
So my questions are: should I use a Unix or a TCP socket to connect to my remote docker? Or should I somehow forward all the relevant ports from the container and use the "SSH Interpreter" option? And if so, how do I set this all up? Am I setting up my Docker Container properly in the first place?
I think I have trawled through every forum and online resource, over the last two days, but have not come any closer to getting this to work. I have also tried to get this to work in Spyder, but to no avail either. So any advice is very appreciated!
Many thanks!
Thank you for depicting the dilemma so poignantly and clearly in your cartoon :-). My colleague and I were trying to do something similar and what ultimately worked beautifully was creating an SSH config directly to the Docker container jumping from the remote machine, and then setting it as a remote SSH interpreter so that pycharm doesn't even realize it's a Docker container. It also works well for vscode.
set up ssh service in docker container (subset of steps in https://dev.to/s1ntaxe770r/how-to-setup-ssh-within-a-docker-container-i5i, port22 stuff wasn't needed)
docker exec -it <container> bash: create admin interactive prompt for docker
apt-get install openssh-server
service ssh start
confirm with service ssh status -> * sshd is running
determine IP and test SSHing from remote machine into container (adapted from https://phoenixnap.com/kb/how-to-ssh-into-docker-container, steps 2 and 3)
from normal command prompt on remote machine (not within container): docker inspect -f "{{ .NetworkSettings.IPAddress }}" <container> to get container IP
test: ping -c 3 <container_ip>
ssh: ssh <container_ip>; should drop you into the container as your user; however, requires container to be configured properly (docker run cmd has -v /etc/passwd:/etc/passwd:ro \ etc.). It may ask for a password. note: if you do this for a different container later that is assigned the same IP, you will get a warning and may need to delete the previous key from known_hosts; just follow the instructions in the warning.
test SSH from local machine
if you don't have it set up already, set up passwordless ssh key-based authentication to the remote machine with the docker container
make SSH command that uses your remote machine as a jump server to the container: ssh -J <remote_machine> <container_ip>, as described in https://wiki.gentoo.org/wiki/SSH_jump_host; if successful you should drop into the container just as you did from the remote machine
save this setup in your ~/.ssh/config; follow the ProxyJump Example from https://wiki.gentoo.org/wiki/SSH_jump_host
test config with ssh <container_host_name_defined_in_ssh_config>; should also drop you into interactive container
configure pycharm (or vscode or any IDE that accepts remote SSH interpreter)
Preferences -> Project -> Python Interpreter -> Add -> SSH Interpreter -> New server configuration
host: <container_host_name_defined_in_ssh_config>
port: 22
username: <username_on_remote_server>
select interpreter, can navigate using the folder icon, which will walk you through paths within the docker, or you can enter the result of which python from the container
follow pycharm prompts
After starting a command prompt, I normally start with login in to openshift with this command:
$ oc login https://api.starter-us-west-1.openshift.com
--token=
Works fine. Up till now I then connected to the docker registry of Openshift with the command:
$ docker login -u myOpenShiftName -p registry.starter-us-west-1.openshift.com (or :443)
Now I get this error (partly translated):
Warning: failed to get default registry endpoint from daemon (error
during connect: Get http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.37/info:
open //./pipe/docker_engine: The system cannot find the specified
file. In the default daemon configuration on Windows, the docker
client must be run elevated to connect. This error may also indicate
that the docker daemon is not running.). Using system default:
https://index.docker.io/v1/
Do I need a local docker running?
UPDATE/ANSWER: yes. On windows10 home start e.g. DockerQuickstartTerminal.
At another computer I had a similar error on Windows 10 pro with Docker. The service was started, but after I had started "Docker for Windows" the error disappeared.
My environment is Win10 home, virtual box + extension + docker toolbox.
The docker command cannot work without its local Docker daemon process running.
If you want to be able to work with OCI/Docker images and not need docker and the daemon, for some things you can use a tool like Skopeo.
https://github.com/containers/skopeo
There are also tools for building OCI container images which aren't dependent on docker.
I am trying to install Docker Tools on Windows 7 laptop, installed Docker using Windows Docker Tools.
When I run docker run hello-world I get the below error. I have already removed the VM, and recreated it. Also, I am using a VPN.
Please let me know what steps should I try next.
C:\Program Files\Docker Toolbox\docker.exe: error during connect: Post http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.35/containers/create: open //./pipe/docker_engine: The system cannot find the fi daemon configuration on Windows, the docker client must be run elevated to connect. This error may also indicate that the docker daemon is not running. See 'C:\Program Files\Docker Toolbox\docker.exe run --help'.
Try restarting the docker service using below on cmd-prompt:
Net stop com.docker.service
Net start com.docker.service
or restart the Docker for Windows service through the Windows GUI by right clicking the service and choosing restart
Have a look at this article on success.docker.com
I am running docker commands in the docker quick start terminal. I need to run those commands in my windows terminal. When I check the version of docker, It shows correctly but when I run docker ps or other docker commands. It shows like :
C:\Users\rajasekar.sambandam>docker ps
error during connect: Get http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.29/containers
/json: open //./pipe/docker_engine: The system cannot find the file specified.
In the default daemon configuration on Windows, the docker client must be run elevated to connect. This error may also indicate that the docker daemon is not running.
On Windows, docker runs in the background in an linux VM. The quick start terminal delegates all the calls to the VM, and thats why the docker commands work.
When running from a normal terminal, run the command:
eval $(docker-machine env default)
This command will connect the current terminal to the backgound machine.