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This chapter covers the node documentation, necessary to have a working system. It covers the network, logging and storage parameters.

Node Configuration

This is an common example of a Jormungandr node configuration file typically named node-config.yaml, however your's will vary depending on your needs. Addtionally, this configuration has been tested on Jormungandr 0.7.1 and may change with newer versions. It's important to keep in mind that the trusted_peers portion of this configuration will be different for each Cardano blockchain network. If you're trying to connect this node to a specific network, you need to know it's genesis block hash, and it's associated list of trusted peers.

Example Configuration - 1:

---
log:
  - output: stderr
    level:  info
    format: plain
http_fetch_block0_service:
  - https://url/jormungandr-block0/raw/master/data
p2p:
  public_address: "/ip4/X.X.X.X/tcp/Y" # This should match your public IP address (X) and port number (Y)
  topics_of_interest:
    blocks: normal #Default is normal - high for stakepool
    messages: low   #Default is low - high for stakepool
  allow_private_addresses: false
  trusted_peers:
  - address: "/ip4/13.230.137.72/tcp/3000"
    id: e4fda5a674f0838b64cacf6d22bbae38594d7903aba2226f
  - address: "/ip4/13.230.48.191/tcp/3000"
    id: c32e4e7b9e6541ce124a4bd7a990753df4183ed65ac59e34
  - address: "/ip4/18.196.168.220/tcp/3000"
    id: 74a9949645cdb06d0358da127e897cbb0a7b92a1d9db8e70
  - address: "/ip4/3.124.132.123/tcp/3000"
    id: 431214988b71f3da55a342977fea1f3d8cba460d031a839c
  - address: "/ip4/18.184.181.30/tcp/3000"
    id: e9cf7b29019e30d01a658abd32403db85269fe907819949d
  - address: "/ip4/184.169.162.15/tcp/3000"
    id: acaba9c8c4d8ca68ac8bad5fe9bd3a1ae8de13816f40697c
  - address: "/ip4/13.56.87.134/tcp/3000"
    id: bcfc82c9660e28d4dcb4d1c8a390350b18d04496c2ac8474
rest:
  listen: 127.0.0.1:3100
storage: "./storage"

Note: The node configuration uses the YAML format.

advanced

this is not a recommended settings as it may take memory and may trigger some latency:

If you want to record the reward distributions in a directory it is possible to set the environment variable: JORMUNGANDR_REWARD_DUMP_DIRECTORY=/PATH/TO/DIR/TO/WRITE/REWARD.

If an error occur while dumping the reward, the node will panic with an appropriate error message.