dotmesh: git for data
Dotmesh is a git-like CLI for capturing, organizing and sharing application states.
In other words, it's a snapshotting tool for databases and other filesystem states.
The application states that dotmesh captures are stored in datadots.
It can capture the state of multiple databases, each one in a subdot, in a single atomic commit.
installing on docker (Mac or Ubuntu 16.04+)
Install the dotmesh client
sudo curl -sSL -o /usr/local/bin/dm \ https://get.dotmesh.io/$(uname -s)/dm
Make the client binary executable.
sudo chmod +x /usr/local/bin/dm
Then use the client to install
dotmesh-server, assuming you have Docker installed and your user account has access to the Docker daemon.
dm cluster init
Checking suitable Docker is installed... yes, got 17.12.0-ce. Checking dotmesh isn't running... done. Pulling dotmesh-server docker image... [...]
This will set up a single-instance cluster on your local machine.
Verify that the
dm client can talk to the
See the installation docs for more details, including installing dotmesh on Kubernetes.
getting started guide
Try our hosted tutorial!
Alternatively, try the hello Dotmesh on Docker guided tutorial.
what is a datadot?
A datadot allows you to capture your application's state and treat it like a
A simple example is to start a PostgreSQL container using a datadot called
docker run -d --volume-driver dm \ -v myapp:/var/lib/postgresql/data --name postgres postgres:9.6.6
This creates a datadot called
myapp, creates the writeable filesystem for the default
master branch in that datadot, mounts the writeable filesystem for the
master branch into
/var/lib/postgresql/data in the
postgres container, and starts the
postgres container, like this:
First, switch to it, which, like
cd'ing into a git repo, makes it the "current" dot -- the dot which later
dm commands will operate on by default:
dm switch myapp
You can then see the
dm list output:
DOT BRANCH SERVER CONTAINERS SIZE COMMITS DIRTY * myapp master a1b2c3d /postgres 40.82 MiB 0 40.82 MiB
The current branch is shown in the
BRANCH column and the current dot is marked with a
* in the
dm list output.