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VistasWhy do I lose data if docker restarts?
I am new to docker and would need some advice. I am about to set up my own personal git repository with Gitea. The docker compose file can be seen below. When I first run the file everything is fine. The problem occurs when I restart my computer or Docker then the page loads but it is empty no repos, nothing. Also it is not possible to log in with the credential that were set after first installation. It looks like the connection to the database is lost after restarting.
docker compose file:
version: "2"
networks:
gitea:
external: false
volumes:
gitea:
driver: local
services:
server:
image: gitea/gitea:latest
environment:
- USER_UID=1000
- USER_GID=1000
- DB_TYPE=mysql
- DB_HOST=db:3306
- DB_NAME=gitea
- DB_USER=gitea
- DB_PASSWD=gitea
restart: always
networks:
- gitea
volumes:
#- ./gitea:/data
- gitea:/data
ports:
- "3000:3000"
- "222:22"
depends_on:
- db
db:
image: mysql:5.7
restart: always
environment:
- MYSQL_ROOT_PASSWORD=gitea
- MYSQL_USER=gitea
- MYSQL_PASSWORD=gitea
- MYSQL_DATABASE=gitea
networks:
- gitea
volumes:
- ./mysql:/var/lib/mysql
1 Respuestas
Responde la pregunta0
You should declare one of your local folder as a volume in order to get persistent data. As in here for instance:
docker run -v /host/directory:/container/directory -other -options image_name command_to_run
Otherwise, any data written on top of an existing image layer is discarded by default when the container is removed.
This is using a union filesystem: (see "Digging into Docker layers")
In the case of gitea (docker), make sure you have a local data and mysql folder, to be mounted by the Docker images.
volumes:
- ./data:/data
volumes:
- ./mysql:/var/lib/mysql
You have used
volumes:
#- ./gitea:/data
- gitea:/data
That would declare a volume (instead of a bind mount), named "gitea", stored into your Docker installation.
You could try the same for the db part:
volumes:
- mysql:/var/lib/mysql