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Questions tagged [docker]

Docker is an open source project that automates the deployment of applications inside software containers.

Docker is an open source project that automates the deployment of applications inside software containers. Docker extends a common container format called Linux Containers (LXC), with a high-level API providing a lightweight virtualization solution that runs processes in isolation. Docker utilizes LXC, cgroups, and the Linux kernel itself. Unlike traditional virtual machines, a Docker container does not include a separate operating system, instead it relies on the operating system’s functionality provided by the underlying infrastructure.

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Can you give public IP addresses to multiple Docker containers on a single server?

I want to have multiple Docker containers on a single server, and have them both host web applications. If I only have one Docker container set up, I can expose port 80 on the Docker container and connect to the Docker container via the public IP…
AndreasKralj
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Docker symmetric/policy-based routing

Background I have a debian server that has 3 network interfaces which are: eno1 (10.0.0.35/24) eno1.10 (10.0.10.65/24) eno1.40 (10.0.40.40/24) Between those interfaces is a firewall. The multiple routes on the server lead to asymetrical routing…
Claypenguin
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MariaDB connection refuse docker compose

I'm gonna try to explain what my recently found headache is. First of all I'm using Gitlab CI so docker and docker in docker is involved. The structure of the CI is basically this and all running dind: Stand UP 3 services for 3 different databases…
Felipe Rodriguez
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Docker overlay host to container network not working

I am trying to create overlay docker network without swarm Link using consul multi host in aws ec2 instance AMI. I have created a overlay network and able to communicate with the containers . However when I am trying to reach from host to container…
pikas
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tc rule not matching when applied on virtual interface created with Docker

I'm trying to delay traffic between containers (container1 calling container2) from a third container that has access to the host network and having capability NET_ADMIN (container3_admin). When I apply the following tc rules on the container I want…
Nicolas Henneaux
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Glusterfs support for user namespaces

I have a gluster volume mounted on a host machine and tried to run a namespaced docker container with a bind mount from the gluster mount on the host. It seems that the user namespacing is not handled correct for the glusterfs bind mount. My problem…
jojoob
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Blacklisting IPs with Docker, Traefik and DigitalOcean

I’m currently using Traefik on a digitalocean instance with Docker provider enabled. It’s working well with several containers (frontends and backends). The problem is that most DO IPs are recycled and the several that I’ve tried keep getting noisy…
Andres
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gitlab-runner process in container can't find gitlab container when using docker-compose

Update: I did not resolve my problem but I know why it does not work. If you are using docker executor, when you launch a job, gitlab-runner binary will start a special container. This container is gitlab-runner-helper and will manage git, caches,…
Antoine
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Got permission denied while trying to connect to the Docker daemon socket

This error persist even when my user is already in the docker group. I added my user like this: $ sudo usermod -a -G docker $USER
Mateo Gutierrez
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Docker pull then start for running container - what is the expected behavior?

Let's say I have a running Docker container X that is based on image foo. If I pull a new version of foo, then stop and delete X, and then docker run foo - will it start the new version of the image? Said differently - do I need to stop X before I…
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Owncloud behind Nginx (docker containers) not logging remote client IP

For some reason my Owncloud container behind an Nginx reverse proxy is not logging the remote client IP but the Nginx IP. Please check below my config files for Nginx. I've tried multiple solutions modifying the Nginx proxy_set_headers directives…
ascub
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Unable to connect to local postgres docker container

I am trying to troubleshoot a connection issue between my postgres client and my postgres docker container (locally). To start my docker container I ran the following command: docker run -d --name postgres -p 5432:5432 -e POSTGRES_PASSWORD=docker …
one stevy boi
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How to Handle Long TCP Sessions deployment in ZDD?

I have an application that forward TCP connection to another App. Currently I am trying to make this application Zero Download Deployment, so I can deploy new version at any time but there is a problem I don't have not found a solution in how to…
Penguin_HuHu
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container cannnot connect to service from another container

I have the following containers running: $ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES b02d801f9aa3 …
ivanleoncz
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Is a Hyper-V Container somewhere between a docker container and a virtual machine?

We know that Virtual Machines have a full OS with its own memory management installed with the associated overhead of virtual device drivers. In a virtual machine, valuable resources are emulated for the guest OS and hypervisor, which makes it…
Hawkeye
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