Questions tagged [docker]
Docker images, containers, hub, and everything related to the containerization platform
922
questions
0
votes
0answers
16 views
minimal VM image for running docker
I'm looking for a minimal VM to build docker images in a self-hosted (gitlab-)CI environment.
For security reasons, i don't want to enable DinD on my normal build nodes.
Instead, I want to use a ...
0
votes
0answers
5 views
Get a static hostname for container without ELB
I've been using compose-cli's cloud functionality to deploy my web app to AWS.
It works very well. I have an Nginx image with port 80 open (not publically accessible though).
Compose-cli will create ...
0
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0answers
5 views
How to build a docker container of Apache-httpd web server with PHP7.4?
I am trying to build a docker container image of apache web server along with PHP 7.4 (all of packages.)
I hav picked source httpd:2.4 and installing php7.4 and its other packages.
FROM httpd:2.4
...
0
votes
1answer
19 views
How can I get logs in real time from a docker container hosted on Digital Ocean
I have a docker container in which I am running Flask and Scrapy.
I noticed that when I run and build my container on my local machine I get logs in real time. However, on an Ubuntu instance hosted on ...
0
votes
1answer
11 views
Run docker with bind-mount pointing to non-existent host folder: Where is the data?
I run a docker image with a bind-mount pointing to a non-existing host directory. The docker image then created data into that volume, wherever it may be. The data is accessible on every docker run.
...
5
votes
0answers
28 views
How would you build docker images in Kubernetes while distributing its layer caching among all pod builders at scale?
We are using Azure DevOps as our CICD platform.
We have our own self hosted Linux agents which we integrated into our CICD Azure Kubernetes Cluster .
We use these agents to build our Docker images ...
0
votes
1answer
65 views
How to configure single nginx ingress with letsencrypt and multiple bitnami wordpress containers?
I'm using bitnami/wordpress helm chart to create many websites which should run on different domains. I'd like to auto secure them and use a single ingress to route traffic. I'm using this tutorial ...
0
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0answers
14 views
Using Docker containers to update files in another docker container
I'm having trouble managing CI/CD for a online psychology experiment platform.
I'm running a docker container for the experiment platform that serves static webpages. The container requires files to ...
0
votes
1answer
37 views
Difference between Docker container with Debian vs VM with Debian?
What is the difference between running a Docker container with Debian (eg. https://hub.docker.com/_/debian/) and then running a virtual machine with Debian? And why is it still an advantage if any?
I'...
0
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0answers
17 views
Manage environments with Github and Google Kubernetes Engine
I have a Github repo with 2 branches on it, develop and main. The first is the "test" environment and the other is the "production" environment. I am working with Google Kubernetes ...
0
votes
1answer
14 views
How to setup custom authentication and authorization in Istio/K8?
As I am new to istio world. I am having difficulty understanding how that technology's auth system work.
Let's say, I have a project that has 8 pods(services). I understand that authentication and ...
1
vote
2answers
34 views
How to resolve a problem “certificate signed by unknown authority” in GKE on pulling image (a private registry) when a pod is created?
I generated a CA certificate, then issued a certificate based on it for a private registry, that located in the same GKE cluster. Put the server certificates to the private registry and the CA ...
1
vote
1answer
17 views
OIDC token invalid when put into kubeconfig
I can connect to the Kubernetes API from a container running inside the cluster with an OIDC token like so:
kubectl —token $token get pod
I would now like to prepare a kubeconfig such that other ...
0
votes
0answers
6 views
Can I develop using a Python distribution which is inside a docker container on a remote machine using Visual Studio Code?
I would like to develop Python code on Visual Studio Code.
However, I want to develop it with autocomplete and linting based on the Python distribution which is inside a Docker container on a remote ...
0
votes
0answers
9 views
Docker: How to download & verify a publisher's root key (out-of-band, distinct-domain cryptographic verification, WoT)
For a given publisher of docker images on Docker Hub (let's say debian), how do I download their root release/image signing key and verify its authenticity from multiple sources out-of-band from each-...
1
vote
1answer
16 views
How to pin public root key when downloading an image with docker pull (Docker Content Trust)?
How can I execute docker pull (with Docker Content Trust enabled) such that it fails if the image doesn't have a valid signature using the private key corresponding to (or subordinate to) the public ...
0
votes
0answers
27 views
docker push/pull works with insecure registry, but kubectl fails with ImagePullBackOff
I am using docker version - 18.09 with kubectl version v1.21.1 on Ubuntu 18.04.5 LTS. I am trying to work with a private insecure docker registry at 10.106.58.220:5000
Modified /etc/docker/daemon.json:...
0
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0answers
23 views
Getting network connection error when trying to build docker container
I am trying to build a docker container but getting network connection error :
# docker build -t zhaochang/flaskarm64:1 .
Sending build context to Docker daemon 161.3kB
Step 1/9 : FROM arm64v8/alpine
...
0
votes
0answers
19 views
kube-apiserver container failed to start after upgrade vm
The k8s cluster that I monitor got a problem when update VM host.
At first I got connection refused on xxxxxx:6443 when I try to kubectl get no.
Then I check kubelet log by journalctl -xeu kubelet and ...
0
votes
0answers
19 views
How to configure docker volume mounted to external storage that is likely to fail? Detecting drive fail and automatic recovery
I've created container whose purpose is to act as network storage (samba). This storage is actually an external drive, with its own (independent of server, so possibly likely to fail) power supply. ...
2
votes
2answers
43 views
Log/Data rotation in Docker Container
My question is more on the concept or best practices to follow.
I have two docker containers running InfluxDB and Grafana (monitoring applications). I have mounted external volume to each.
now, the ...
0
votes
0answers
20 views
How to properly set up a VPN connection inside a kubernetes pod?
Working on a script which involves querying a PostgreSQL db. This db is on a host which is behind an f5 VPN.
I'm pretty new to the concept of VPNs, and particularly with f5's products.
Ideally, I'd ...
0
votes
0answers
15 views
How do I install GitWeb onto k8s-Gerrit? (itself installed through Helm chart)
My team uses Gerrit for code review, and has it installed on Kubernetes via Helm chart. We want to be able to see our code changes, and so we wanted to integrate Gitweb with Gerrit. This begins with ...
0
votes
1answer
56 views
Docker compose up, Error starting userland proxy: listen tcp 0.0.0.0:22: bind: address already in use
I'm trying to a gitlab/gitlab-ce image up and running with docker-compose on macOS (Big Sur) (docker-compose up -d). I'm using docker-machine with the virtualBox driver.
However, when starting the ...
0
votes
1answer
24 views
Which container will be targeted when replicas larger than 1
Below is a simplified version of my docker-compose.yml file.
I can understand or find any resources to tell me which container of the 5 django replicas the nginx container will target if i reference ...
0
votes
1answer
21 views
Docker image file location
I run Docker on Windows 10 machine with WSL 2 support. I would like to know where docker image files are located in this situation? Where docker image files are located in case when no WSL 2 is ...
0
votes
0answers
9 views
OpenShift - identify request to pod with the service that sent it
I have several services running on OpenShift that are interacting with each other. Right now one of the services is crushing as a result of too many requests, and I want to know which one of the ...
0
votes
1answer
19 views
How to change ownership of folder inside the container after build?
I have this service in my docker-compose.yml
php-fpm:
container_name: php_app
restart: always
build:
context: .
dockerfile: ./docker/php-fpm/Dockerfile
volumes:
- ./src:/var/www/html
that take ...
2
votes
1answer
35 views
Best Kubernetes storage option
I know there are several options, I’ve heard everything from SSHFS, NFS, object storage all the way to storage OS, my issue is I need something fast and reliable to serve a media website built on ...
0
votes
2answers
81 views
Reaching a Docker environment running in VMware from LAN
Here is my setup:
I have a Ubuntu 20.04.2 LTS machine running in VMware (vSphere client).
On this machine, I have a local Drupal website running in Docker using Wodby Docker4Drupal https://github.com/...
0
votes
1answer
27 views
ArgoCD Autosync based off of Docker Image `latest` Tag
Using ArgoCD, I'd like to have the App AutoSync Update/Reploy when the docker image is updated on a specific tag such as latest or stable.
For example, if I have a deployment in my git repo like this:
...
0
votes
1answer
31 views
Docker compose to ECS, two services in one task
I'm using this method to deploy my docker-compose project to AWS ECS.
A simplified version of my docker-compose.yml looks like this:
version: '3'
services:
web:
image: .dkr.ecr.eu-west-3....
0
votes
0answers
12 views
Docker run command inside jenkins pipeline produces error
Background
I have a Jenkins pipeline that I use for building my application. Actual building of software is done using a container. I just mount the source code to container and run container with a ...
0
votes
1answer
32 views
yarn server with docker-compose
So I am trying to start up an server that has:
a mongodb container
a backend container
a client container
Both server containers require me to run yarn start at the end. However, when I run this in ...
0
votes
1answer
55 views
AWS ECS Update with new docker image
I've setup a cluster on AWS ECS, it's hosting nginx and a webapp.
I've used these commands to create my resources
aws ecr create-repository --repository-name <repo-name>
ecs-cli configure --...
0
votes
1answer
48 views
Continuous Deployment with jenkins
I am a beginner in DevOps.
I created a continuous integration cycle using jenkins(docker image) and bitbucket.
I used a simple spring boot hello-world project and after CI i got an executable Jar.
I ...
0
votes
0answers
38 views
Error while building Docker image
I tried to build the Docker image using the command "docker build --no-cache -t cytools .", but got the following error:
=> ERROR [27/30] RUN tar zxvf palp-2.20.tar.gz; rm palp-2.20.tar....
0
votes
0answers
11 views
ssl on wordpress docker image
When using https links for siteurl and home my docker wordpress stops responding (getting connection refused errors).
Its a known issue (https://github.com/docker-library/wordpress/issues/46) and the ...
0
votes
0answers
16 views
Cannot execute two phpmyadmin instances in different containers
I trying to run multiple instances of phpmyadmin and MySQL. So I have actually 2 docker-compose.yml files, which contains this
database:
container_name: boilerplate_db
restart: always
...
0
votes
1answer
70 views
Minikube for Ubuntu 20.04 WSL stuck on 'Restarting existing docker container for “minikube” …' after minikube start and 'StartHost failed' error
I've come across the following problem where my minikube cluster doesn't start and the command line becomes stagnant in the following way:
$ minikube start
�😄 minikube v1.17.1 on Ubuntu 20.04
�🆕 ...
0
votes
0answers
19 views
What is the effect of setting up CPU limits on docker containers according to run time of the process
Let's say I have a Linux machine with 10 CPUs (1000%) and a docker container that at its peak consumes 500% of the CPU and the process takes 10 hours to complete (let's say it runs most of the time at ...
1
vote
0answers
22 views
How to add one downloaded images layer to Docker without using Docker? [closed]
I am already downloaded docker images by other tools.
it is possiable to add one images layer to docker?
direct copy it to /var/lib/docker/overlay2 ?
dowload file example:
> docker_pull.py node
......
1
vote
1answer
28 views
Testing docker image builds when low level libraries change
Background
In our organization we have many small repos for shared libraries used among our applications. Particularly, we have many Python libraries and Python applications. We have a structures like:...
1
vote
0answers
72 views
Connection Refused to Unix socket in Docker container from host
I have a service running in Docker that listens on a Unix Domain Socket, and a client running on the Docker host (a Mac). The client gets a "Connection Refused" error trying to connect.
I'm ...
0
votes
1answer
185 views
How to build, package and deploy a react-native-web app in a Docker container?
Given there is a react-native-web solution, what needs to be done to build it and run inside a Docker container?
What is the build environment/toolchain?
Which environment is required to run?
From ...
0
votes
0answers
17 views
How to tell “docker push” command to print out the progress in way that is suitable for CI
Is it possible to call docker push command and tell it to show the overall progress but turn off the animations so that it would be useful in CI pipeline. Currently I can not see any progress info ...
0
votes
0answers
27 views
Docker | Multiple ways to build Docker Image
I'm just getting into DevOps, trying to learn as I go. One thing I don't understand is this.
When I was trying to automate my docker image build, I noticed that there are multiple ways to accomplish ...
0
votes
1answer
97 views
mysqld: [ERROR] Found option without preceding group in config file /root/.my.cnf at line 1!
I'm trying to create a .my.cnf file for my MySQL docker-container that would allow me to prefill the user and password for the MySQL client. To achieve this I created the following dockerfile:
FROM ...
0
votes
1answer
23 views
Untracable glassfish docker container image or clean installation?
For a customer I need to create a glassfish container, containing the glassfish 5.0 release.
I have been looking for standard glassfish images on docker hub, and other places, but can't manage to find ...
0
votes
1answer
87 views
Having trouble with building Docker image
I'm trying to build a docker image for a software using docker build -t cytools .
Here is the output that I'm confused about:
[+] Building 0.0s (1/2) ...
