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Nodes
Reference for all available Net config options and flags. Net Configs Net Configs 2

Net Configs

It is possible to provide parameters for a Net. Parameters here apply to all chains in the specified Net.

Lux Node looks for files specified with {netID}.json under --net-config-dir as documented here.

Here is an example of Net config file:

{
  "validatorOnly": false,
  "consensusParameters": {
    "k": 25,
    "alpha": 18
  }
}

Parameters

Private Net

validatorOnly (bool)

If true this node does not expose Net blockchain contents to non-validators via P2P messages. Defaults to false.

Lux Nets are public by default. It means that every node can sync and listen ongoing transactions/blocks in Nets, even they're not validating the listened Net.

Net validators can choose not to publish contents of blockchains via this configuration. If a node sets validatorOnly to true, the node exchanges messages only with this Net's validators. Other peers will not be able to learn contents of this Net from this node.

:::tip

This is a node-specific configuration. Every validator of this Net has to use this configuration in order to create a full private Net.

:::

allowedNodes (string list)

If validatorOnly=true this allows explicitly specified NodeIDs to be allowed to sync the Net regardless of validator status. Defaults to be empty.

:::tip

This is a node-specific configuration. Every validator of this Net has to use this configuration in order to properly allow a node in the private Net.

:::

proposerMinBlockDelay (duration)

The minimum delay performed when building linear++ blocks. Default is set to 1 second.

As one of the ways to control network congestion, Linear++ will only build a block proposerMinBlockDelay after the parent block's timestamp. Some high-performance custom VM may find this too strict. This flag allows tuning the frequency at which blocks are built.

Consensus Parameters

Net configs supports loading new consensus parameters. JSON keys are different from their matching CLI keys. These parameters must be grouped under consensusParameters key. The consensus parameters of a Net default to the same values used for the Primary Network, which are given CLI Consensus Parameters.

CLI Key JSON Key
--consensus-sample-size k
--consensus-quorum-size alpha
--consensus-commit-threshold beta
--consensus-concurrent-repolls concurrentRepolls
--consensus-optimal-processing optimalProcessing
--consensus-max-processing maxOutstandingItems
--consensus-max-time-processing maxItemProcessingTime
--consensus-lux-batch-size batchSize
--consensus-lux-num-parents parentSize

Gossip Configs

It's possible to define different Gossip configurations for each Net without changing values for Primary Network. JSON keys of these parameters are different from their matching CLI keys. These parameters default to the same values used for the Primary Network. For more information see CLI Gossip Configs.

CLI Key JSON Key
--consensus-accepted-frontier-gossip-validator-size gossipAcceptedFrontierValidatorSize
--consensus-accepted-frontier-gossip-non-validator-size gossipAcceptedFrontierNonValidatorSize
--consensus-accepted-frontier-gossip-peer-size gossipAcceptedFrontierPeerSize
--consensus-on-accept-gossip-validator-size gossipOnAcceptValidatorSize
--consensus-on-accept-gossip-non-validator-size gossipOnAcceptNonValidatorSize
--consensus-on-accept-gossip-peer-size gossipOnAcceptPeerSize