Merge pull request #624 from filecoin-project/feat/add-remote-ledger-…

…tutorial

Add remote ledger tutorial

content/en/tutorials/lotus/remote-ledger.md

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+---
+title: "Using Ledger on a remote machine"
+description: "This is a step-by-step guide on how to use Ledger on a remote machine"
+lead: "This is a step-by-step guide on how to use Ledger on a remote machine"
+draft: false
+menu:
+    tutorials:
+        parent: "tutorials-lotus"
+weight: 230
+toc: true
+---
+
+Lotus users might want to use a Ledger device for the owner-address of an SPs for higher security. Often This tutorial is based on a setup with two different servers, one to run the `lotus daemon` while the other runs the `lotus-wallet` application. 
+
+## Prerequisites
+
+- A lotus daemon running and being in-sync on a separate server, hereafter called `lotus-node operator`.
+- A machine where you plan to plug in and use the Ledger device, hereafter called `ledger-provider`.
+
+## As the "Ledger-provider" (Linux specific)
+
+1. Install `lotus-shed` and `lotus-wallet` (Linux specific):
+
+```shell
+sudo apt install
+```
+
+## As the "Ledger-provider" (Mac specific)
+
+1. Install `lotus-shed` and `lotus-wallet` (Mac specific):
+
+Install the required depencies with:
+
+```shell
+brew install go jq pkg-config hwloc
+```
+
+Clone the Lotus-repo with:
+
+```shell
+git clone https://github.com/filecoin-project/lotus
+```
+
+Change directory to Lotus with:
+
+```shell
+cd lotus
+```
+
+Install `lotus-shed` and `lotus-wallet`
+
+```shell
+make lotus-shed lotus-wallet
+```
+
+## As the “lotus-node operator”
+
+1. On your node that is in sync with the chain, setup a remote wallet backend:
+
+In your `.lotus/config.toml` file:
+
+```shell
+[Wallet]
+  RemoteBackend = "http://127.0.0.1:1777"
+```
+
+2. Import the wallet:
+
+```shell
+lotus wallet import --format json-lotus
+```
+
+And paste the JSON-line that was given to you in the third step in the `As the "Ledger-provider"` section.
+
+3. That is it! 🚀
+
+As long as the ssh reverse-tunnel is alive, you will be required to confirm transactions on the Ledger whenever the Lotus node makes them.