blockchain

Usage: postchain-mc blockchain [OPTIONS] COMMAND [ARGS]...

  Interact with blockchains

Options:
  -h, --help  Show this message and exit

Commands:
  add           Propose a new blockchain in a specific container. Change is
                applied after voting within the deployer voter set of the cluster
                that the container belongs to.
  update        Propose new configuration to blockchain at specific height.
  remove        Propose removal of blockchain. Command is irreversible
  stop          Propose stopping a blockchain from building blocks
  start         Propose starting a chain that has previously been stopped.
  replicas      List blockchain replicas
  signers       List blockchain signers
  list          List blockchains
  get           Get blockchain configuration
  replica       Blockchain replica commands

The blockchain command (postchain-mc cluster) consists of sub-commands to interact with blockchains. For example, list existing blockchains, create new blockchains, and remove blockchains.

add

Usage: postchain-mc blockchain add [OPTIONS]

  Propose a new blockchain in a specific container. Change is applied
  after voting within the deployer voter set of the cluster that the container
  belongs to.

Options:
  -cfg, --config VALUE                  Configuration file for PMC (overrides system
                                        configuration)
  -bc, --blockchain-config PATH         Configuration file of blockchain (GtvML
                                        (*.xml) or Gtv (*.gtv))
  -c, --container TEXT                  Name of container to run in
  -n, --name TEXT                       Name of blockchain
  -h, --help                            Show this message and exit

The add command (postchain-mc blockchain add) proposes a new blockchain in a specific container.

Example usage:

Pmc blockchain add –blockchain-config ‘./config.xml’ –container <container-name> –name <blockchain-name>

update

Usage: postchain-mc blockchain update [OPTIONS]

  Propose new configuration to blockchain at specific height. Height must be >
  current height and > all previously approved configuration heights. Use
  force flag -f to override previously added configs or to squeeze in a
  configuration at a height < previously approved config heights. Change is applied after voting.

Options:
  -cfg, --config VALUE              Configuration file for PMC (overrides system
                                    configuration)
  -bc, --blockchain-config PATH     Blockchain config to propose
  -brid, --blockchain-rid VALUE     Blockchain RID
  -h, --height INT
  -f, --force
  --help                            Show this message and exit

The update command (postchain-mc blockchain update) proposes a new configuration for a running blockchain. You can only apply the new configurations at a block height higher than the current height and the block height specified in all previously approved configuration updates.

This can be overseen by using the force flag (-f), which overrides previously added configuration updates. Changes are applied after voting.

remove

Usage: postchain-mc blockchain remove [OPTIONS]

  Propose removal of blockchain. This command is irreversible.

Options:
  -cfg, --config VALUE          Configuration file for PMC (overrides system
                                configuration)
  -brid, --blockchain-rid VALUE Blockchain RID
  -h, --help                    Show this message and exit

The remove command (postchain-mc blockchain remove) proposes the removal of a blockchain.

stop

Usage: postchain-mc blockchain stop [OPTIONS]

  Propose stopping a blockchain from building blocks.

Options:
  -cfg, --config VALUE          Configuration file for PMC (overrides system
                                configuration)
  -brid, --blockchain-rid VALUE Blockchain RID
  -h, --help                    Show this message and exit

The stop command (postchain-mc blockchain stop) proposes to stop a blockchain from building blocks.

start

Usage: postchain-mc blockchain start [OPTIONS]

  Propose starting a chain that has previously been stopped.

Options:
  -cfg, --config VALUE           Configuration file for PMC (overrides system
                                 configuration)
  -brid, --blockchain-rid VALUE  Blockchain RID
  -h, --help                     Show this message and exit

The start command (postchain-mc blockchain start) proposes to start a blockchain that has previously been stopped.

replicas

Usage: postchain-mc blockchain replicas [OPTIONS]

  List blockchain replicas

Options:
  -cfg, --config VALUE           Configuration file for PMC (overrides system
                                 configuration)
  -brid, --blockchain-rid VALUE  Blockchain RID
  -i, --includeinactive          Include disabled/removed clusters (not
                                 implemented yet)
  -h, --help                     Show this message and exit

The replicas command (postchain-mc blockchain replicas) lists all the blockchain replicas.

signers

Usage: postchain-mc blockchain signers [OPTIONS]

  List blockchain signers

Options:
  -cfg, --config VALUE           Configuration file for PMC (overrides system
                                 configuration)
  -brid, --blockchain-rid VALUE  Blockchain RID
  -i, --includeinactive          Include disabled/removed clusters (not
                                 implemented yet)
  -h, --help                     Show this message and exit

The signers command (postchain-mc blockchain signers) lists all the blockchain signers.

list

Usage: postchain-mc blockchain list [OPTIONS]

  List blockchains

Options:
  -cfg, --config VALUE      Configuration file for PMC (overrides system
                            configuration)
  -i, --includeinactive     Include disabled/removed clusters (not implemented
                            yet)
  -h, --help                Show this message and exit

The list command (postchain-mc blockchain list) lists all blockchains.

get

Usage: postchain-mc blockchain get [OPTIONS]

  Get blockchain configuration

Options:
  -cfg, --config VALUE           Configuration file for PMC (overrides system
                                 configuration)
  -brid, --blockchain-rid VALUE  Blockchain RID
  -h, --height INT
  --save PATH                    where to save configuration XML
  --help                         Show this message and exit

The get command (postchain-mc blockchain get) receives the configuration of a given blockchain. The configuration can be saved to a desired path. It's possible to get the blockchain config at a specific block height using the –h flag.

Example usage:

Pmc blockchain get -brid <blockchain-rid> –height 200 –save <path-on-local-machine>

replica

Usage: postchain-mc blockchain replica [OPTIONS] COMMAND [ARGS]...

  Blockchain replica commands

Options:
  -h, --help  Show this message and exit

Commands:
  add           add replica of a blockchain. The node is verifying but not building
                blocks.
  remove        remove replica of a blockchain

• Use the (postchain-mc blockchain replica add) command to add a replica to the blockchain.

Usage: postchain-mc blockchain replica add [OPTIONS]

  add replica of a blockchain. The node is verifying but not building blocks.

Options:
  -cfg, --config VALUE          Configuration file for PMC (overrides system
                                configuration)
  -brid, --blockchain-rid VALUE Blockchain RID
  -pk, --pubkey VALUE           Public key
  -h, --help                    Show this message and exit

• Use the (postchain-mc blockchain replica remove) command to remove a blockchain replica.

Usage: postchain-mc blockchain replica remove [OPTIONS]

  remove replica of a blockchain

Options:
  -cfg, --config VALUE           Configuration file for PMC (overrides system
                                 configuration)
  -brid, --blockchain-rid VALUE  Blockchain RID
  -pk, --pubkey VALUE            Public key
  -h, --help                     Show this message and exit