Menu

Subscribe

NFS Plugin for Raspberry Pi on Docker Swarm

on Docker, Docker Swarm, NFS, Storage

In this post I will show you how to install a NFS Volume Plugin for Docker Swarm to persist your data on NFS

Pre-Requisites

If you have not installed your NFS Server, you can have a look at this post

Installing the Driver

We will mount the NFS server to create the directory so first install the dependencies:

$ sudo apt install nfs-common -y

Download the latest version of netshare:

$ wget https://github.com/ContainX/docker-volume-netshare/releases/download/v0.36/docker-volume-netshare_0.36_armhf.deb

Install, enable and start:

$ sudo dpkg -i docker-volume-netshare_0.36_armhf.deb
$ sudo systemctl enable docker-volume-netshare
$ sudo service docker-volume-netshare start

Demo

Let's mount the NFS export directory to our filesystem:

$ sudo mount 192.168.0.115:/opt/nfs /mnt

Create the directory on the NFS server:

$ mkdir /mnt/volumes/voltest

Run a container with the volume mapping:

$ docker run -i -t --volume-driver=nfs -v 192.168.0.115/opt/nfs/volumes/voltest4:/mount alpine /bin/sh

Create a file:

$ touch /mount/file.txt

Exit the container:

$ exit

Now run the container again and see if the data persisted:

$ docker run -i -t --volume-driver=nfs -v 192.168.0.115/opt/nfs/volumes/voltest4:/mount alpine /bin/sh

$ ls /mount/
file.txt

You can also created namespace volumes:

$ mkdir /mnt/volumes/voltest2

$ docker volume create --driver nfs --name voltest2 -o share=192.168.0.115:/opt/nfs/volumes/voltest2

$ docker run -i -t -v voltest2:/mount alpine /bin/sh

And also with docker-compose:

version: "3.5"  
services:  
  web:
    image: nginx
    volumes:
      - nginx.vol:/usr/share/nginx/html
    ports:
      - 86:80
    networks:
      - web

networks:  
  web:
    driver: overlay
    name: web

volumes:  
  nginx.vol:
    driver: nfs
    driver_opts:
      share: 192.168.0.115:/opt/nfs/volumes/voltest2