Lotus Worker

The Lotus Worker is an extra process that can offload heavy processing tasks from your Lotus Miner. The sealing process automatically runs in the Lotus Miner process, but you can use the Worker on another machine communicating over a fast network to free up resources on the machine running the mining process.

Note: Using the Lotus Worker from China

If you are trying to use lotus-worker from China. You should set this environment variable on your machine:

export IPFS_GATEWAY="https://proof-parameters.s3.cn-south-1.jdcloud-oss.com/ipfs/"

Get Started

Make sure that the lotus-worker is compiled and installed by running:

make lotus-worker

Setting up the Miner

First, you will need to ensure your lotus-miner's API is accessible over the network.

To do this, open up ~/.lotusminer/config.toml (Or if you manually set LOTUS_MINER_PATH, look under that directory) and look for the API field.

Default config:

[API]
ListenAddress = "/ip4/127.0.0.1/tcp/2345/http"
RemoteListenAddress = "127.0.0.1:2345"

To make your node accessible over the local area network, you will need to determine your machines IP on the LAN, and change the 127.0.0.1 in the file to that address.

A more permissive and less secure option is to change it to 0.0.0.0. This will allow anyone who can connect to your computer on that port to access the API. They will still need an auth token.

RemoteListenAddress must be set to an address which other nodes on your network will be able to reach.

Next, you will need to create an authentication token. All Lotus APIs require authentication tokens to ensure your processes are as secure against attackers attempting to make unauthenticated requests to them.

Connect the Lotus Worker

On the machine that will run lotus-worker, set the MINER_API_INFO environment variable to TOKEN:MINER_NODE_MULTIADDR. Where TOKEN is the token we created above, and NIMER_NODE_MULTIADDR is the multiaddr of the Lotus Miner API that was set in config.toml.

Once this is set, run:

lotus-worker run

If you are running multiple workers on the same host, you will need to specify the --listen flag and ensure each worker is on a different port.

To check that the Lotus Worker is connected to your Lotus Miner, run lotus-miner sealing workers and check that the remote worker count has increased.

why@computer ~/lotus> lotus-miner sealing workers
Worker 0, host computer
        CPU:  [                                                                ] 0 core(s) in use
        RAM:  [||||||||||||||||||                                              ] 28% 18.1 GiB/62.7 GiB
        VMEM: [||||||||||||||||||                                              ] 28% 18.1 GiB/62.7 GiB
        GPU: GeForce RTX 2080, not used

Worker 1, host othercomputer
        CPU:  [                                                                ] 0 core(s) in use
        RAM:  [||||||||||||||                                                  ] 23% 14 GiB/62.7 GiB
        VMEM: [||||||||||||||                                                  ] 23% 14 GiB/62.7 GiB
        GPU: GeForce RTX 2080, not used

Running locally for manually managing process priority

You can also run the Lotus Worker on the same machine as your Lotus Miner, so you can manually manage the process priority. To do so you have to first disable all seal task types in the miner config. This is important to prevent conflicts between the two processes.

You can then run the miner on your local-loopback interface;

lotus-worker run

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