Storage Providers

Bacalhau has two ways to make use of external storage providers:

• Inputs storage resources consumed as inputs to jobs

• Publishers storage resources created with the results of jobs

Inputs

IPFS

To start, you'll need to connect the Bacalhau node to an IPFS server so that you can run jobs that consume CIDs as inputs.

You can either install IPFS and run it locally, or you can connect to a remote IPFS server.

In both cases, you should have an IPFS multiaddress for the IPFS server that should look something like this:

export IPFS_CONNECT=/ip4/10.1.10.10/tcp/80/p2p/QmVcSqVEsvm5RR9mBLjwpb2XjFVn5bPdPL69mL8PH45pPC

The multiaddress above is just an example - you'll need to get the multiaddress of the IPFS server you want to connect to.

You can then configure your Bacalhau node to use this IPFS server by passing the --ipfs-connect argument to the serve command:

bacalhau serve --ipfs-connect $IPFS_CONNECT

Or, set the Node.IPFS.Connect property in the Bacalhau configuration file.

Publishers

IPFS

The IPFS publisher works using the same setup as above - you'll need to have an IPFS server running and a multiaddress for it. You'll then you pass that multiaddress using the --ipfs-connect argument to the serve command.

If you are publishing to a public IPFS node, you can use bacalhau get with no further arguments to download the results. However, you may experience a delay in results becoming available as indexing of new data by public nodes takes time.

To speed up the download or to retrieve results from a private IPFS node, pass the swarm multiaddress to bacalhau get to download results.

# Set the below environment variable, use the --ipfs-swarm-addrs flag,
# or set the Node.IPFS.SwarmAddresses config property.
export BACALHAU_IPFS_SWARM_ADDRESSES=/ip4/.../tcp/5001/p2p/Qmy...
bacalhau get $JOB_ID

Pass the swarm key to bacalhau get if the IPFS swarm is a private swarm.

# Set the below environment variable, use the --ipfs-swarm-key flag,
# or set the Node.IPFS.SwarmKeyPath config property.
export BACALHAU_IPFS_SWARM_KEY=./path/to/swarm.key
bacalhau get $JOB_ID