Parachain Setup
A guide showing how to setup a parachain on the Porta Relay Chain
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Setup server on Digital Ocean
Minimum required specification: 2 GB Memory / 1 AMD vCPU / 50 GB Disk / LON1 - Ubuntu 20.04 (LTS) x64
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Install dependencies
Open console
Enter the following command into the console:
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sudo apt update && sudo apt upgrade && sudo apt install -y git clang curl libssl-dev llvm libudev-dev && curl https://getsubstrate.io -sSf | bash -s -- --fast
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Add a volume
Volume > Create Volume
Configure:
- Storage size
- Droplet
- Volume name
Click Create Volume
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Build Pod
Open the server’s console and navigate to the volume storage. Download the pod and compile.
Run the following command:
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cargo build--release
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Purchase domain and transfer nameservers to Digital Ocean
Here is an example of purchasing the domain portaverse.co.uk through 1&1 and changing its name servers to Digital Ocean.
We shall be using portastation.co.uk as the domain in this tutorial.
Add DNS record to Digital Ocean
A parachain is both relay node and a collator node, do you must add one record to represent the collator node and another record to represent the relay node.
Networking > Domains > portastation.co.uk
Create a record called ‘collator.portaverse.co.uk’ pointed to the IP address of your parachain node.
Create another record called ‘relay.portaverse.co.uk’ pointed to the IP address of your parachain node.
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Setup Certificate
Enter the following command in the console:
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sudo apt-get install nginx && sudo snap install core && sudo snap refresh core && sudo apt-get remove certbot && sudo snap install --classic certbot && sudo ln -s /snap/bin/certbot /usr/bin/certbot && sudo certbot –nginx
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Enter:
- Contact email address
- Relay and Collator FQDN’s
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Configure Nginx server block
My preferred method for doing this is accessing the server using FileZilla.
- 9944 and 443 for relay
- 9945 and 4433 for collator
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cd .. && nano /etc/nginx/sites-available/default
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File should be this:
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server {
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root /var/www/html;
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index index.html index.htm index.nginx-debian.html;
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server_name relay.portastation.co.uk; # managed by Certbot
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location / {
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try_files $uri $uri/ =404;
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proxy_buffering off;
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proxy_pass http://localhost:9944;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header Host $host;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_http_version 1.1;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection "upgrade";
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}
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listen [::]:443 ssl; # managed by Certbot
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listen 443 ssl; # managed by Certbot
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ssl_certificate /etc/letsencrypt/live/relay.portastation.co.uk/fullchain.pem; # managed by Certbot
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ssl_certificate_key /etc/letsencrypt/live/relay.portastation.co.uk/privkey.pem; # managed by Certbot
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include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
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ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
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}
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server {
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if ($host = relay.portastation.co.uk) {
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return 301 https://$host$request_uri;
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} # managed by Certbot
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listen 80 ;
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listen [::]:80 ;
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server_name relay.portastation.co.uk;
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return 404; # managed by Certbot
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}
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server {
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root /var/www/html;
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index index.html index.htm index.nginx-debian.html;
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server_name collator.portastation.co.uk; # managed by Certbot
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location / {
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try_files $uri $uri/ =404;
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proxy_buffering off;
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proxy_pass http://localhost:9945;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header Host $host;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_http_version 1.1;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection "upgrade";
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}
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listen [::]:4433 ssl; # managed by Certbot
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listen 4433 ssl; # managed by Certbot
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ssl_certificate /etc/letsencrypt/live/collator.portastation.co.uk/fullchain.pem; # managed by Certbot
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ssl_certificate_key /etc/letsencrypt/live/collator.portastation.co.uk/privkey.pem; # managed by Certbot
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include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
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ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
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}
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server {
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if ($host = collator.portastation.co.uk) {
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return 301 https://$host$request_uri;
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} # managed by Certbot
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listen 80 ;
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listen [::]:80 ;
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server_name collator.portastation.co.uk;
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return 404; # managed by Certbot
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}
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Restart nginx
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sudo systemctl restart nginx
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Register Parachain ID
Access relay chain UI: Open Polkadot-UI and navigate to the following custom network:
wss://station.porta.network:443
Network > Parachain > Parathreads
Click: ParaId
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Make a note of the para_id and click Submit
Our example will use para_id 2001
Generate chain_spec
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./target/release/parachain-collator build-spec --disable-default-bootnode --chain local > parachain-chainspec.json
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Generate two sr25519 encryption keys
Enterthe following command in the console:
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subkey generate --scheme sr25519
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Adapt chain_spec to reference
- para_id 2009
- Porta NFT Testnet
- ProtocolId
- Properties
- Custom sudo key
- Custom aura key x2
- Custom balances x2
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Build the raw chain_spec
Enter the following command:
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./target/release/parachain-collator build-spec --chain=parachain-chainspec.json --raw --disable-default-bootnode > parachain-chainspec-raw.json
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Generate Parachain Genesis State
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./target/release/parachain-collator export-genesis-state --chain parachain-chainspec.json > parachain-genesis
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Generate WASM Runtime Validation Function
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./target/release/parachain-collator export-genesis-wasm --chain parachain-chainspec.json > parachain-wasm
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Move the raw chain_spec used for Relay Nodes (porta-raw.json) to the ./pod directory
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Start the Collator Node
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./target/release/parachain-collator --name nft --collator --force-authoring --base-path ./data/parachain-demo --port 30000 --ws-port 9945 --rpc-port 9933 --rpc-external --rpc-cors all --rpc-methods=unsafe --chain parachain-chainspec-raw.json -- --execution wasm --chain ./porta-raw.json --port 30001 --ws-port 9944 --bootnodes /ip4/64.227.45.184/tcp/30001/p2p/12D3KooWDGgqoUNZKNmwJL48eRoS59KZT7JyBL5ne7G59cGMjjrF --rpc-port 9934 --rpc-external --rpc-cors all --rpc-methods=unsafe
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Wait for the node to synchronise blocks...
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Create a parathread
Network > Parachain > Parathread
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Once the instantiation lifecycle completes, the parathread will have been created
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To upgrade the parathread to a parachain you must call paraSudoWrapper.sudoScheduleParathreadUpgrade()
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Parachain will then begin the countdown to upgrade
The wait time will be: the time remaining in this epoch + one whole epoch
Add custom aura keys to the parachain node
Access the node:
- wss://collator.portastation.co.uk:4433
Navigate to Developer > RPC Calls
Author > insertKey()
Insert both the sr25519 keys you previously generated
- aura
- 12-word mnemonic
- Public key (hex)
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Proof of Validity will now begin. The parachain will now author blocks (#best) and having them finalised by the relay chain (#finalised).
The parachain is now working.
Last modified 3mo ago
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