pool/docs/install.md
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# Installation
Lightning Pool is built very similarly to
[Lightning Loop](https://github.com/lightninglabs/loop): There is a process that
is constantly running in the background, called the trader daemon (`poold`) and
a command line tool to interact with the daemon, called just `pool`.
The `poold` trader daemon can be run either as a standalone binary connected to
a compatible `lnd` node or integrated into
[Lightning Terminal (LiT)](https://github.com/lightninglabs/lightning-terminal).
## Downloading the standalone binaries
The latest official release binaries can be [downloaded from the GitHub
releases page](https://github.com/lightninglabs/pool/releases).
## Downloading as part of Lightning Terminal (LiT)
To run `poold` integrated into the Lightning Terminal, download [the latest
release of LiT](https://github.com/lightninglabs/lightning-terminal/releases)
and follow
[the installation instructions of LiT](https://github.com/lightninglabs/lightning-terminal#execution)
## Building the binaries from source
To build both the `poold` and `pool` binaries from the source code, at least the
`go 1.14` and `make` must be installed.
To download the code, compile and install it, the following commands can then
be run:
```shell script
$ git clone https://github.com/lightninglabs/pool
$ cd pool
$ make install
```
This will install the binaries into your `$GOPATH/bin` directory.
## Installing `lnd`
Lightning Pool needs to be connected to an `lnd` node version `v0.11.1-beta` or
later to work. It is recommended to run an
[official release binary of `lnd`](https://github.com/lightningnetwork/lnd/releases).
[Installing `lnd` from source](https://github.com/lightningnetwork/lnd/blob/master/docs/INSTALL.md#installing-lnd)
is also possible but needs to be done **with all sub-server build flags
enabled**:
```shell script
$ make install tags="signrpc walletrpc chainrpc invoicesrpc"
```
## Running `poold`
If `lnd` is configured with the default values and is running on the same
machine, `poold` will be able to connect to it automatically and can be started
by simply running:
```shell script
$ poold
# Or if you want to do everything in the same terminal and run poold in the
# background:
$ poold &
# For testnet mode, you'll need to specify the network as mainnet is the
# default:
$ poold --network=testnet
```
In the case that `lnd` is running on a remote node, the `tls.cert` and all
`*.macaroon` files from the `lnd` data directory need to be copied to the
machine where `poold` is running.
The daemon can then be configured to connect to the remote `lnd` node by using
the following command line flags:
```shell script
$ poold --lnd.host=<the_remote_host_IP_address>:10009 \
--lnd.macaroondir=/some/directory/with/lnd/data/macaroons \
--lnd.tlspath=/some/directory/with/lnd/data/tls.cert
```
To persist this configuration, these values can also be written to a
configuration file, located in `~/.pool/<network>/pool.conf`, for example:
> ~/.pool/mainnet/pool.conf
```text
lnd.host=<the_remote_host_IP_address>:10009
lnd.macaroondir=/some/directory/with/lnd/data/macaroons
lnd.tlspath=/some/directory/with/lnd/data/tls.cert
```
## Configuration options
There is a range of operational settings that can be set to change the default
logging behavior or change the directories where `poold` stores its data. To
see the full list of options, run `poold --help`.
The following list only includes flags that have an impact on the match making
or business related behavior of the Pool trader daemon:
| Flag | Required | Default Value | Description |
|-------------|----------|---------------|-------------------------------------|
| `newnodesonly` | No | `false` | If set to `true` the daemon will only buy channels from nodes it does not yet have channels with |
# Authentication and transport security
The gRPC and REST connections of `poold` are encrypted with TLS and secured with
macaroon authentication the same way `lnd` is.
If no custom base directory is set then the TLS certificate is stored in
`~/.pool/<network>/tls.cert` and the base macaroon in
`~/.pool/<network>/pool.macaroon`.
The `pool` command will pick up these file automatically on mainnet if no custom
base directory is used. For other networks it should be sufficient to add the
`--network` flag to tell the CLI in what sub directory to look for the files.
For more information on macaroons,
[see the macaroon documentation of lnd.](https://github.com/lightningnetwork/lnd/blob/master/docs/macaroons.md)
**NOTE**: pool's macaroons are independent from `lnd`'s. The same macaroon
cannot be used for both `poold` and `lnd`.