Persisting Docker state

Alexey Starinsky

8/30/24, 9:33 AM

I was able to follow this guide and run VPN on my Ubuntu 22.04, but was unable to persist my VPN configuration with

-v openvpn_conf:/opt/Dockovpn_data

Where should this /opt/Dockovpn_data folder appear? At least there is no this folder on the host machine.

/opt folder on the host contains the following:

me@localhost:/opt$ cd /
me@localhost:/$ ll opt
total 12
drwxr-xr-x  3 root root 4096 Apr 13 15:46 ./
drwxr-xr-x 19 root root 4096 Apr 13 15:46 ../
drwx--x--x  4 root root 4096 Apr 13 15:46 containerd/

Should I use docker commit?

1 + 0

ubuntu

docker

Score:1

Server

hardillb

8/30/24, 1:18 PM

It is not on the local filesystem, it is a named volume.

openvpn_conf is the name of the Docker volume, /opt/Dockovpn_data is the path inside the container it will be mounted on.

If you want to use a local directory you need to use a fully qualified path for the first part (and it needs to existing if pre Docker 23)

e.g.

-v /opt/Dockovpn_data:/opt/Dockovpn_data

This would mount the local /opt/Dockovpn_data on /opt/Dockovpn_data inside the container (you will need to ensure the permissions are right...)

https://docs.docker.com/engine/reference/commandline/run/#volume

+ 0

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Persisting Docker state

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