Minio is a project that has come up on my radar several times and caught my attention - it's an S3-compatible object-storage server that you can run on your own kit and has first-class Docker and Raspberry Pi support.
What does Minio mean for me?
If you deploy Minio onto one of your PCs or Raspberry Pis you can leverage that machine for storing data in your applications, photos, videos or even backing up your blog. Minio even has a very attractive UI and a test site available at http://play.minio.io:9000/
Tell me about the moving parts
Well Minio comes in two parts - the client portion and the server portion which also includes a web-ui / file-browser. They've both easy to setup and if you're familiar with command-lines I think you will like working with it.
I found Minio easy to setup and liked the fact that it comes with sensible defaults. This means that if you were thinking of building a Raspberry Pi NAS - it can be even easier to get started than with NFS or Samba.
Let's start with the client. If you're on a Mac then you can install it with brew:
# brew install minio-mc
Now you have a choice of running Minio in Docker or on your bare-metal. Since I'm a Docker Captain I'm going to opt for containers.
# docker run -p 9000:9000 --name minio -d minio/minio server /export
The simplest set of overrides (above) would store all of your data inside the container, but we could probably use a bind-mount or Docker volume for that. Let's imagine you have an SSD mounted at
/mnt/sdd, then we can run the following to use it instead:
# docker run -v /mnt/ssd:/export -p 9000:9000 --name minio -d minio/minio server /export
When you run Minio you will be issued a key and a secret. These are used by the client or the web front-end to connect securely. I found my codes by typing in
docker logs minio.
You get a bit of help with configuring the client - but be careful because the IP address belongs to the container and you'll have to change that to localhost or the IP of an interface on your machine.
Upload a file
Configure your minio instance with the
mc client like this:
# mc config host add myminio http://127.0.0.1:9000 accessCode secretCode
Now in order to upload some data we need to create a
bucket which roughly corresponds to a mount point or a drive on Windows.
mb stands for make bucket.
# mc mb myminio/photos
Now that you've created a bucket with
mb let's upload a photo. Why not grab an image from my blog post on a building a Raspberry Pi NAS?
You can use Minio to upload the image just like you would if you were using
# mc cp ~/Downloads/IMG_20161203_151921-2.jpg myminio/photos IMG_20161203_151921-2.jpg: 164.98 KB / 164.98 KB ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ 100.00% 9.02 MB/s 0s
At any point you can use the
mc command to list the files in a bucket like this:
# mc ls myminio/photos [2017-01-17 21:00:58 GMT] 165KiB IMG_20161203_151921-2.jpg [2017-01-17 21:10:50 GMT] 0B Downloads/
Checkout your files in the browser
Minio's browser will ask you to login with your access codes we found earlier. Then you can navigate all the files you've uploaded and download them remotely. You could even tunnel Minio over an SSH tunnel to access it remotely.
If you'd like to learn more then most of the Minio client commands support a help flag or give info on the command line:
NAME: mc - Minio Client for cloud storage and filesystems. USAGE: mc [FLAGS] COMMAND [COMMAND FLAGS | -h] [ARGUMENTS...] COMMANDS: ls List files and folders. mb Make a bucket or a folder. cat Display file and object contents. pipe Redirect STDIN to an object or file or STDOUT. share Generate URL for sharing. cp Copy files and objects. mirror Mirror buckets and folders. diff Show differences between two folders or buckets. rm Remove files and objects. events Manage object notifications. watch Watch for files and objects events. policy Manage anonymous access to objects. session Manage saved sessions for cp and mirror commands. config Manage mc configuration file. update Check for new mc update. version Print version info. help, h Shows a list of commands or help for one command
Detailed documentation is also available on the website at http://docs.minio.io
More advanced options
You can have your client point to multiple Minio servers, which is really neat especially if you're working on a distributed team.
Minio's test-server called "play" is already configured in the default client, you can see all the servers you have configured with
mc config host list.
To upload the photo to Minio's "play" S3 server just type in:
# mc mb play/somebucketname # mc cp ~/Downloads/IMG_20161203_151921-2.jpg play/somebucketname
If you want to test something larger out you could try uploading your entire Downloads photo, and then you should use the
--recursive flag to make sure nothing's missed:
# mc cp --recursive ~/Downloads/IMG_20161203_151921-2.jpg myminio/photos
Minio supports integration at an API level, this is very exciting for integrating object storage into your business applications, side-projects and even CI processes.
The Raspberry Pi is supported natively with a download available for the Pi 2/3 and a Docker container recipe here: