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Questions tagged [docker-volume]

A docker data volume is a specially-designated directory within one or more containers that bypasses the Union File System.

A docker data volume is a specially-designated directory within one or more containers that bypasses the Union File System. Data volumes provide several useful features for persistent or shared data:

  • Volumes are initialized when a container is created. If the container’s base image contains data at the specified mount point, that existing data is copied into the new volume upon volume initialization.
  • Data volumes can be shared and reused among containers.
  • Changes to a data volume are made directly.
  • Changes to a data volume will not be included when you update an image.
  • Data volumes persist even if the container itself is deleted.

Reference: https://docs.docker.com/engine/userguide/dockervolumes/

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docker run with --volume

I'm trying to dockerize some services for development on my machine and wondering how docker run --volume=.. works. For example, if I do something like docker run --volume=/path/to/data:/data [...] will /path/to/data be (re)created locally only if…
planetp
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Undefined volume with Docker Compose

I wanted to translate this docker CLI command (from smallstep/step-ca) into a docker-compose.yml file to run with docker compose (version 2): docker run -d -v step:/home/step \ -p 9000:9000 \ -e "DOCKER_STEPCA_INIT_NAME=Smallstep" \ -e…
Connor Low
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Is there a way to determine the size of a docker volume on my macOS machine?

I'm aware of docker volume ls and docker inspect -s, but the former doesn't show size info and the latter, even though it has a --size option, ignores it for volumes. Is there something I'm missing?
Bonifacio2
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How can I mount a volume of files to a remote docker daemon?

I have a Docker image a which does some logic on a given set of files. When running locally, I start a as following: docker run -v /home/Bradson/data:/data a This does its job. Now I want to run a on a remote Docker…
Bradson
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Mysql docker container keeps restarting

The Container keeps restarting. I tried docker-compose down -v docker volume rm The container was working fine earlier. Logs 2021-03-27 13:16:08+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.23-1debian10 started. 2021-03-27…
Shimron Duan
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How to create docker volume device/host path

I believe there is an easy way to copy files into a docker volume that has already been mounted to a container. docker cp /tmp/my_data/. my_container:/my_data as referenced by How to copy multiple files into a docker data volume But, how does one…
loonyuni
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Recreate named volume with compose

-V, --renew-anon-volumes Recreate anonymous volumes instead of retrieving data from the previous containers. Does docker-compose up -V not apply to named volumes? I have a service that, at image build time, pulls…
Slav
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Docker add network drive as volume on windows

I am trying to mount a network drive as a volume. This is the command I am trying docker run -v //NetworkDirectory/Folder:/data alpine ls /data I am running this command on windows and the data directory is coming up empty. How can I mount this…
Salmaan P
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How to share data between host and containers using volumes in Docker Compose

I am playing with Docker Compose and volumes version: '2' services: php-apache: env_file: - dev_variables.env image: reypm/php55-dev build: context: . args: - PUID=1000 …
ReynierPM
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Docker Anonymous Volumes

I've seen Docker volume definitions in docker-compose.yml files like so: -v /path/on/host/modules:/var/www/html/modules I noticed that Drupal's official image, their docker-compose.yml file is using anonymous volumes. Notice the comments: volumes: …
Raphael Rafatpanah
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docker-compose volume on node_modules but is empty

I'm pretty new with Docker and i wanted to map the node_modules folder on my computer (for debugging purpose). This is my docker-compose.yml web: build: . ports: - "3000:3000" links: - db environment: PORT: 3000 volumes: -…
Mike Boutin
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How to copy data from docker volume to host?

I have created a docker volume "hello" and it contains some data . How can I copy the data to host ? First : kerydeMacBook-Pro:~ hu$ docker volume create --name hello hello checking : kerydeMacBook-Pro:~ hu$ docker volume ls DRIVER …
Kery Hu
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Kubernetes Secrets Volumes vs Environment Variables

Is there a recommended way to use Kubernetes Secrets? They can be exposed as environment variables or using a volume mount. Is one more secure than the other?
Muhammad Rehan Saeed
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docker-compose.yml Syntax for Named Volumes

What is the docker-compose.yml syntax for specifying the host path of a named volume? docker-compose.yml: volumes: myvolume: # how do I specify path here? othervolume: services: # etc... I've checked the docs, but I can't find it. Honestly, I…
Petrus Theron
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Docker named volume not updating

I am confused on how the named data-volume (not data container) should be used. I have a named data volume app_src that is mounted to /usr/src/app using docker compose file. However, after making changes to my source code (locally), building the…
Shulhi Sapli
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