Skip to content

Commit

Permalink
initial files
Browse files Browse the repository at this point in the history
  • Loading branch information
CrackTheCode016 committed Sep 17, 2024
1 parent e9b65e3 commit 4dd5ccd
Show file tree
Hide file tree
Showing 2 changed files with 95 additions and 0 deletions.
1 change: 1 addition & 0 deletions infrastructure/general/.pages
Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
title: General Infrastructure
nav:
- index.md
- setup-bootnode.md
94 changes: 94 additions & 0 deletions infrastructure/general/setup-bootnode.md
Original file line number Diff line number Diff line change
@@ -0,0 +1,94 @@
---
title: Set up a Boot Node
description: Instructions on setting up, testing, maintaining, and testing a boot node.
---

!!!note
When you first start a node, it has to find a way to find other nodes in the network. For that
purpose, you need "bootnodes". After the first bootnode is found, it can use that node’s connections
to continue expanding and play its role in the network, like participating as a validator.

<!-- TODO: link wss guide wherever applicable. -->

## Accessing the Bootnode

The consensus is that bootnodes have to be accessible in three ways:

- **P2P**: the p2p port, which can be set by `--listen-addr /ip4/0.0.0.0/tcp/<port>`. This port is
not automatically set on a non-validator node (for example, an archive RPC node)
- **P2P/WS**: the WebSocket version, which can be set by `--listen-addr /ip4/0.0.0.0/tcp/<port>/ws`
- **P2P/WSS**: the _secure_ websocket version. An SSL-secured connection to the p2p/ws port must be
achieved by a proxy since the node cannot include certificates. It is needed for light clients.

## Network Key

Starting a node creates its node key in the `chains/<chain>/network/secret_ed25519` file. You can
also create a node-key by `polkadot key generate-node-key` and use that node-key in the startup
command line.

It is essential you backup the node key, especially if it gets included in the polkadot binary
because it gets hardcoded in the binary and needs to be recompiled to change.

## Running the Bootnode

Say we are running a Polkadot node with:

```
polkadot --chain polkadot --name dot-bootnode --listen-addr /ip4/0.0.0.0/tcp/30310 --listen-addr /ip4/0.0.0.0/tcp/30311/ws
```

You would have the p2p on port 30310 and p2p/ws on port 30311. For the p2p/wss port, we need to
set up a proxy, a DNS name, and a corresponding certificate. These concepts and example setups are
described here. The following example is for the popular nginx server and enables p2p/wss on port 30312 by proxying the p2p/ws
port 30311:

_/etc/nginx/sites-enabled/dot-bootnode_

```
server {
listen 30312 ssl http2 default_server;
server_name dot-bootnode.stakeworld.io;
root /var/www/html;
ssl_certificate "<your_cert";
ssl_certificate_key "<your_key>";
location / {
proxy_buffers 16 4k;
proxy_buffer_size 2k;
proxy_pass http://localhost:30311;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";
proxy_set_header Host $host;
}
}
```

## Testing Bootnode Connection

If we have the above node running with DNS name `dot-bootnode.stakeworld.io`, proxied with a valid
certificate and node-id `12D3KooWAb5MyC1UJiEQJk4Hg4B2Vi3AJdqSUhTGYUqSnEqCFMFg` then the following
commands should give you a: "syncing 1 peers".

!!!tip
You can add `-lsub-libp2p=trace` on the end to get libp2p trace logging for debugging purposes.

### P2P

```bash
polkadot --chain polkadot --base-path /tmp/node --name "Bootnode testnode" --reserved-only --reserved-nodes "/dns/dot-bootnode.stakeworld.io/tcp/30310/p2p/12D3KooWAb5MyC1UJiEQJk4Hg4B2Vi3AJdqSUhTGYUqSnEqCFMFg" --no-hardware-benchmarks
```

### P2P/WS

```bash
polkadot --chain polkadot --base-path /tmp/node --name "Bootnode testnode" --reserved-only --reserved-nodes "/dns/dot-bootnode.stakeworld.io/tcp/30311/ws/p2p/12D3KooWAb5MyC1UJiEQJk4Hg4B2Vi3AJdqSUhTGYUqSnEqCFMFg" --no-hardware-benchmarks
```

### P2P/WSS

```bash
polkadot --chain polkadot --base-path /tmp/node --name "Bootnode testnode" --reserved-only --reserved-nodes "/dns/dot-bootnode.stakeworld.io/tcp/30312/wss/p2p/12D3KooWAb5MyC1UJiEQJk4Hg4B2Vi3AJdqSUhTGYUqSnEqCFMFg" --no-hardware-benchmarks
```

0 comments on commit 4dd5ccd

Please sign in to comment.