![]() Master the skills of creating various plugins and integrating great tools in order to enhance the functionalities of DockerĪ practical and learning guide that ensures your investment in Docker becomes more valuable #Convoy plugin vs docker for volume how to#Get the first book on the market that shows you how to extend the capabilities of Docker using plugins and third-party tools ![]() This should integrate well into the Docker ecosystem, most importantly docker-compose.Master the art of making Docker more extensible, composable, and modular by leveraging plugins and other supporting tools All the other commands work like with locally stored named volumes. You only need to pass the needed arguments when creating the named volume. It does integrate nicely into Docker when using named volumes. NFS seems to be a viable option for sharing data between docker containers running on different hosts. The names prefixes (core-01, core-02, core-03) show, that indeed all our hosts were used and could share the data. Paste in the following content:Į:\Projekte\coreos-vagrant>docker ps -allĬONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMESĠac66948dc37 busybox "cat /my-shared-data/" 3 minutes ago Exited (0) 3 minutes ago core-02/elated_knuthĠ0b69e2eaed6 busybox "cat /my-shared-data/" 3 minutes ago Exited (0) 3 minutes ago core-03/tiny_hawkingĢdcb47f2b7ad busybox "ls -l /my-shared-dat" 3 minutes ago Exited (0) 3 minutes ago core-01/furious_crayį78fd608ac88 busybox "cp /etc/hostname /my" 3 minutes ago Exited (0) 3 minutes ago core-02/drunk_turingīf2e1dd43439 busybox "ls -l /my-shared-dat" 5 minutes ago Exited (0) 5 minutes ago core-03/zen_pare To do so, create a new file bootstrap.sh in the folder of your Vagrantfile. Now let’s modify our setup, so that the nfs volume plugin is loaded by default. A newly created file is persisted over different runs. Afterwards we can use the new volume-driver nfs to access our hello file. Getting the volume plugin to run was as easy as to load a binary and run it. $ docker run -i -t -volume-driver=nfs -v core-01/exports:/mount busybox cat /mount/greeting INFO Unmounting volume name core-01/exports from /var/lib/docker-volumes/netshare/nfs/core-01/exports ![]() # echo "another hello" > /mount/greeting INFO Mounting NFS volume core-01:/exports on /var/lib/docker-volumes/netshare/nfs/core-01/exports $ docker run -i -t -volume-driver=nfs -v core-01/exports:/mount busybox /bin/sh For this we will be editing the cloud-config (user-data file) as follows. But for some tests, it’s easier to start the NFS service with our virtual Vagrant Environment. For production it’s probably best to use an external file service like NFS or Amazons EFS. If you already have an NFS server, you may skip this part. Read on to find out more about this configuration. If you start with this template, you should be able to just run the tests. TLDR You can get an running Vagrant Template in my Github Repository. So it is surely possible to use a network file system like NFS to share data between containers. You can create networks to connect multiple containers. So I decided to try a more straightforward solution next. It doesn’t seem to solve the problem with sharing volumes between hosts though and does not work with docker-compose yet. You need to create special services to utilize it. Some quick tests with the integrated swarm mode for Docker 1.12 showed, that this new mode takes an different approach than the docker-swarm containers before. ![]() The main problem was sharing data between containers on different swarm nodes. This docker-swarm was no transparent replacement for a plain Docker host. After my initial tests with Sharing Volumes with docker-swarm based on Docker 1.11 I still had some open issues. ![]()
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