I don't use any docker file.
I run my container with:
docker run -it --restart always -p 80:80 v1 /bin/bash
Then I need to type in
service apache2 start
How to run the apache service automatically when docker container starts ?
I have no idea what v1 is, sorry. But if you check the official docs, you will see, that docker run has the following format:
$ docker run [OPTIONS] IMAGE[:TAG|#DIGEST] [COMMAND] [ARG...]
COMMAND is the command executed on start. The docs even suggest how to run nginx on start automatically:
docker run -d -p 80:80 my_image service nginx start
From all this you may derive, that you need to run something like
docker run -it --restart always -p 80:80 v1 service apache2 start
Related
I am running gitlab-runner with docker. I used to create a container with following command:
docker run -d --name runner --restart always -v /srv/gitlab-runner/config:/etc/gitlab-runner -v /var/run/docker.sock:/var/run/docker.sock gitlab/gitlab-runner:latest
then I exec the container with this command:
docker exec -it runner bash
and when I want to see the status of gitlab-runner it says
"gitlab-runner: Service is not running"
while when I restart gitlab-runner service with
/etc/init.d/gitlab-runner restart
it returns true and stop and start the service.
what is the problem exaclty?
I installed and run nginx on my linux machine to understand the configurations etc. After a while i decided to remove it safely by following this thread in order to use it in docker
By following this documentaion i run this command
sudo docker run --name ngix -d -p 8080:80 pillalexakis/myrestapi:01
And i saw ngix's homepage at localhost
Then i deleted all ngix images & stopped all containers and i also run this command
sudo docker system prune -a
But now restarted my service by this command
sudo docker run -p 192.168.2.9:7777:8085 phillalexakis/myfirstapi:01 and i keep seeing at localhost ngix index.html
How can i totally remove it ?
Note: I'm new with docker and i might have missed a lot of things. Let me know what extra docker commands should i run in order provide better information.
Assuming your host have been preparing as below
your files (index.html, js, etc) under folder - /myhost/nginx/html
your nginx configuration - /myhost/nginx/nginx.conf
Solution
map your files (call volume) on the fly from outside docker image via docker cli
This is the command
docker run -it --rm -d -p 8080:80 --name web \
-v /myhost/nginx/html:/usr/share/nginx/html \
-v /myhost/nginx/nginx.conf:/etc/nginx/nginx.conf \
nginx
copy your files into docker image by build your own docker image via Dockerfile
This is your Dockerfile under /myhost/nginx
FROM nginx:latest
COPY ./html/index.html /usr/share/nginx/html/index.html
This is the command to build your docker image
cd /myhost/nginx
docker build -t pillalexakis/nginx .
This is the command to run your docker image
docker run -it --rm -d -p 8080:80 --name web \
pillalexakis/nginx
I installed Mosquitto broker with Docker on Raspbian this way:
docker pull eclipse-mosquitto
docker run -d -p 1883:1883 -p 9001:9001 --name=mosquitto eclipse-mosquitto --restart=always
When I reboot the Raspberry, the container seems that is not running and I cannot connect to it. If I try to run it again I get:
docker: Error response from daemon: Conflict. The container name
"/mosquitto" is already in use by container
"3187ab53a3a2067b9d6ce0sa647a8d90cb52485f5540ca4eacad1c4e662ffa9d". You have
to remove (or rename) that container to be able to reuse that name.
See 'docker run --help'.
So I need to remove it
docker rm -f mosquitto
and restart it again.
What I miss?
Docker Engine prevents two containers from having the same name.
So if you run twice the command like this:
docker run -d -p 1883:1883 -p 9001:9001 --name=mosquitto eclipse-mosquitto
docker stop mosquitto # simulates your reboot
docker run -d -p 1883:1883 -p 9001:9001 --name=mosquitto eclipse-mosquitto
Then the second attempt will fail, as you noticed.
Actually, I guess that you had put the option --restart=always in the wrong place. (More precisely, the arguments given after the image name are not seen as Docker CLI options, they are provided to the entrypoint: docker run [OPTIONS] image-name [ARGUMENTS])
Could you try this (and reboot)?
docker run -d -p 1883:1883 -p 9001:9001 --name=mosquitto --restart=always eclipse-mosquitto
Otherwise, you could just as well do:
docker start eclipse-mosquitto
after a docker stop or a reboot that wouldn't succeed in restarting the container.
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 have a bash file that runs my apps docker image using docker run -it --network test_network -p 8000:8000 testApp but I also need to run my mysql image using docker run -it --network test_network -p 3308:3308 mysql/mysql-server
Normally I open a separate terminal window manually to run each one but I'm trying to edit my bash script so that it can do both for me. Not sure how though?
You can run both in the detached mode. That will not block the script and allow you to run both together. For that, you need to use the -d or --detach flag.
docker run --detach -it --network test_network -p 8000:8000 testApp
docker run --detach -it --network test_network -p 3308:3308
mysql/mysql-server
Edit:
While the approach mentioned above works, it is better to use docker compose to run multiple containers.