docker volumes

/via: https://docs.docker.com/storage/volumes/

• bind mount: montaje clásico con -v sobre una estructura de directorios
• tmpfs mount: almacenar data no persistente
• volume:
  • gestionado desde cli docker
  • trasversal al OS

• desde la versión 17.06 –mount está también disponible en «standalone» contenedores (además de swarm)

• create
• ls
• inspect
• rm

• –volume | -v
  • [ volume_name | local_path | <nothing-for-anonymous-volume ] : path-in-container [ : [ ro ] ]
• –mount | -m
  • type=[bind,volume,tmpfs], [ source|src= {name,path} ], destination|dst|target=<path-in-container>[,readonly][,volume-opt=<options]

docker run -d \
  --name devtest \
  --mount source=myvol2,target=/app \ # -v myvol2:/app \
  nginx:latest

docker run -d \
  --name=nginxtest \
  --mount source=nginx-vol,destination=/usr/share/nginx/html \ #  -v nginx-vol:/usr/share/nginx/html \
  nginx:latest

$ docker run -d \
  --name=nginxtest \
  --mount source=nginx-vol,destination=/usr/share/nginx/html,readonly \ # -v nginx-vol:/usr/share/nginx/html:ro \
  nginx:latest

docker volume create --driver vieux/sshfs \
  -o sshcmd=test@node2:/home/test \
  -o password=testpassword \
  sshvolume
 
docker run -d \
  --name sshfs-container \
  --volume-driver vieux/sshfs \
  --mount src=sshvolume,target=/app,volume-opt=sshcmd=test@node2:/home/test,volume-opt=password=testpassword \
  nginx:latest

# NFS v3
docker service create -d \
  --name nfs-service \
  --mount 'type=volume,source=nfsvolume,target=/app,volume-driver=local,volume-opt=type=nfs,volume-opt=device=:/var/docker-nfs,volume-opt=o=addr=10.0.0.10' \
  nginx:latest
 
# NFS v4
docker service create -d \
    --name nfs-service \
    --mount 'type=volume,source=nfsvolume,target=/app,volume-driver=local,volume-opt=type=nfs,volume-opt=device=:/,"volume-opt=o=10.0.0.10,rw,nfsvers=4,async"' \
    nginx:latest

docker run -v /dbdata --name dbstore ubuntu /bin/bash
docker run --rm --volumes-from dbstore -v $(pwd):/backup ubuntu tar cvf /backup/backup.tar /dbdata

docker run -v /dbdata --name dbstore2 ubuntu /bin/bash
docker run --rm --volumes-from dbstore2 -v $(pwd):/backup ubuntu bash -c "cd /dbdata && tar xvf /backup/backup.tar --strip 1"