docs: add note about bitcoind with multiple lnd instances
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tyzbit
Olaoluwa Osuntokun
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@ -3,15 +3,15 @@
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### Preliminaries
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In order to work with [`lnd`](https://github.com/lightningnetwork/lnd), the
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following build dependencies are required:
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* **Go:** `lnd` is written in Go. To install, run one of the following commands:
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**Note**: The minimum version of Go supported is Go 1.9. We recommend that
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users use the latest version of Go, which at the time of writing is
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[`1.10`](https://blog.golang.org/go1.10).
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On Linux:
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```
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sudo apt-get install golang-1.10-go
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@ -29,7 +29,7 @@
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Alternatively, one can download the pre-compiled binaries hosted on the
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[golang download page](https://golang.org/dl/). If one seeks to install
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from source, then more detailed installation instructions can be found
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[here](http://golang.org/doc/install).
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[here](http://golang.org/doc/install).
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At this point, you should set your `$GOPATH` environment variable, which
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represents the path to your workspace. By default, `$GOPATH` is set to
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@ -46,7 +46,7 @@
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* **dep:** This project uses `dep` to manage dependencies as well
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as to provide *reproducible builds*.
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**Note**: `dep` is automatically installed via the `make`. To fetch `dep`
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manually, use the following command (assumes you already have Go properly
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installed):
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@ -106,7 +106,7 @@ following commands:
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Install **btcd**: (must be from roasbeef fork, not from btcsuite)
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```
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make btcd
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make btcd
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```
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### Starting btcd
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@ -129,7 +129,7 @@ btcctl --testnet --rpcuser=REPLACEME --rpcpass=REPLACEME getinfo
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{
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"version": 120000,
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"protocolversion": 70002,
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"blocks": 1114996,
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"blocks": 1114996,
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"timeoffset": 0,
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"connections": 7,
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"proxy": "",
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@ -141,7 +141,7 @@ btcctl --testnet --rpcuser=REPLACEME --rpcpass=REPLACEME getinfo
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```
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Additionally, you can monitor btcd's logs to track its syncing progress in real
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time.
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time.
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You can test your `btcd` node's connectivity using the `getpeerinfo` command:
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```
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@ -240,11 +240,12 @@ Once all of the above is complete, and you've confirmed `bitcoind` is fully upda
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lnd --bitcoin.active --bitcoin.testnet --debuglevel=debug --bitcoin.node=bitcoind --bitcoind.rpcuser=REPLACEME --bitcoind.rpcpass=REPLACEME --bitcoind.zmqpath=tcp://127.0.0.1:28332 --externalip=X.X.X.X
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```
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*NOTE:*
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*NOTE:*
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- The auth parameters `rpcuser` and `rpcpass` parameters can typically be determined by `lnd` for a `bitcoind` instance running under the same user, including when using cookie auth. In this case, you can exclude them from the `lnd` options entirely.
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- If you DO choose to explicitly pass the auth parameters in your `lnd.conf` or command line options for `lnd` (`bitcoind.rpcuser` and `bitcoind.rpcpass` as shown in example command above), you must also specify the `bitcoind.zmqpath` option. Otherwise, `lnd` will attempt to get the configuration from your `bitcoin.conf`.
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- You must ensure the same address (including port) is used for the `bitcoind.zmqpath` option passed to `lnd` as for the `zmqpubrawblock` and `zmqpubrawtx` passed in the `bitcoind` options.
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- When running lnd and bitcoind on the same Windows machine, ensure you use 127.0.0.1, not localhost, for all configuration options that require a TCP/IP host address. If you use "localhost" as the host name, you may see extremely slow inter-process-communication between lnd and the bitcoind backend. If lnd is experiencing this issue, you'll see "Waiting for chain backend to finish sync, start_height=XXXXXX" as the last entry in the console or log output, and lnd will appear to hang. Normal lnd output will quickly show multiple messages like this as lnd consumes blocks from bitcoind.
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- Don't connect more than one instance of `lnd` to `bitcoind`. With the default `bitcoind` settings, having more than one instance of `lnd`, or `lnd` plus any application that consumes the RPC could cause `lnd` to miss crucial updates from the backend.
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#### Disabling Wallet Encryption
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@ -269,7 +270,7 @@ file into `lncli` using the `--macaroonpath` argument.
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To disable macaroons for testing, pass the `--no-macaroons` flag into *both*
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`lnd` and `lncli`.
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#### Network Reachability
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#### Network Reachability
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If you'd like to signal to other nodes on the network that you'll accept
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incoming channels (as peers need to connect inbound to initiate a channel
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@ -280,7 +281,7 @@ reachable IP address.
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Optionally, if you'd like to have a persistent configuration between `lnd`
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launches, allowing you to simply type `lnd --bitcoin.testnet --bitcoin.active`
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at the command line, you can create an `lnd.conf`.
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at the command line, you can create an `lnd.conf`.
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**On MacOS, located at:**
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`/Users/[username]/Library/Application Support/Lnd/lnd.conf`
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@ -307,6 +308,6 @@ for Litecoin accordingly. For node configuration, the sections are called
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which chain and node type you're using.
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# Accurate as of:
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- _roasbeef/btcd commit:_ `f8c02aff4e7a807ba0c1349e2db03695d8e790e8`
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- _roasbeef/btcutil commit:_ `a259eaf2ec1b54653cdd67848a41867f280797ee`
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- _roasbeef/btcd commit:_ `f8c02aff4e7a807ba0c1349e2db03695d8e790e8`
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- _roasbeef/btcutil commit:_ `a259eaf2ec1b54653cdd67848a41867f280797ee`
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- _lightningnetwork/lnd commit:_ `08de2becf8d77fae192205172c4fb17bb09bd0dbf49e64aa323b2fcbf9fe2a35`
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