Set up a Pricefeeder (Testnet)

Instructions for validators to set up a Testnet pricefeeder.

1. Install the pricefeeder binary

   curl -s https://get.nibiru.fi/pricefeeder@v1.0.2! | bash

2. Setup the systemd service

   See below for an explanation for the environment variables.

   export CHAIN_ID="nibiru-testnet-1"
   export GRPC_ENDPOINT="localhost:9090"
   export WEBSOCKET_ENDPOINT="ws://localhost:26657/websocket"
   export FEEDER_MNEMONIC="<your feeder mnemonic here>"
   export VALIDATOR_ADDRESS="nibi1valoper..."

   sudo tee /etc/systemd/system/pricefeeder.service<<EOF
   [Unit]
   Description=Nibiru Pricefeeder
   Requires=network-online.target
   After=network-online.target
   
   [Service]
   Type=exec
   User=<your user>
   Group=<your group>
   ExecStart=/usr/local/bin/pricefeeder
   Restart=on-failure
   ExecReload=/bin/kill -HUP $MAINPID
   KillSignal=SIGTERM
   PermissionsStartOnly=true
   LimitNOFILE=65535
   Environment=CHAIN_ID='$CHAIN_ID'
   Environment=GRPC_ENDPOINT='$GRPC_ENDPOINT'
   Environment=WEBSOCKET_ENDPOINT='$WEBSOCKET_ENDPOINT'
   Environment=EXCHANGE_SYMBOLS_MAP='$EXCHANGE_SYMBOLS_MAP'
   Environment=FEEDER_MNEMONIC='$FEEDER_MNEMONIC'
   
   [Install]
   WantedBy=multi-user.target
   EOF

   sudo systemctl daemon-reload && \
   sudo systemctl enable pricefeeder && \
   sudo systemctl start pricefeeder

   # view pricefeeder logs
   journalctl -fu pricefeeder

Environment Variables

Name	Description	Example
CHAIN_ID	the chain id	nibiru-testnet-1
GRPC_ENDPOINT	the endpoint to fetch query params send txs	localhost:9090 if running locally lcd.testnet-1.nibiru.fi:443 if running remotely
WEBSOCKET_ENDPOINT	the endpoint to fetch streaming updates	ws://localhost:26657/websocket if running locally wss://lcd.testnet-1.nibiru.fi/websocket if running remotely
FEEDER_MNEMONIC	the account that sends price votes	guard cream sadness conduct invite crumble clock pudding hole grit liar hotel maid produce squeeze return argue turtle know drive eight casino maze host
VALIDATOR_ADDRESS	(OPTIONAL) the validator to send price votes for, not needed if the FEEDER_MNEMONIC is the validator mnemonic	nibivaloper1zaavvzxez0elundtn32qnk9lkm8kmcszuwx9jz

How to delegate pricefeeder responsibility

As a validator, if you'd like another account to post prices on your behalf (i.e. you don't want your validator mnemonic sending txs), you can delegate pricefeeder responsibilities to another nibi address.

nibid tx oracle set-feeder <nibi address> --from validator

Now that address can start sending votes on behalf of your validator. Just make sure that the FEEDER_MNEMONIC corresponds to the delegated address and the VALIDATOR_ADDRESS is set.