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Command Line Interface (CLI)
The command-line command to interact with BigchainDB Server is bigchaindb.
bigchaindb --help
Show help for the bigchaindb command. bigchaindb -h does the same thing.
bigchaindb --version
Show the version number. bigchaindb -v does the same thing.
bigchaindb configure
Generate a local configuration file (which can be used to set some or all BigchainDB node configuration settings). It will ask you for the values of some configuration settings. If you press Enter for a value, it will use the default value.
At this point, only one database backend is supported: localmongodb.
If you use the -c command-line option, it will generate the file at the specified path:
bigchaindb -c path/to/new_config.json configure localmongodb
If you don't use the -c command-line option, the file will be written to $HOME/.bigchaindb (the default location where BigchainDB looks for a config file, if one isn't specified).
If you use the -y command-line option, then there won't be any interactive prompts: it will use the default values for all the configuration settings.
bigchaindb -y configure localmongodb
bigchaindb show-config
Show the values of the BigchainDB node configuration settings.
bigchaindb init
Create a backend database (local MongoDB), all database tables/collections, various backend database indexes, and the genesis block.
bigchaindb drop
Drop (erase) the backend database (the local MongoDB database used by this node).
You will be prompted to make sure.
If you want to force-drop the database (i.e. skipping the yes/no prompt), then use bigchaindb -y drop
bigchaindb start
Start BigchainDB. It always begins by trying a bigchaindb init first. See the documentation for bigchaindb init.
The database initialization step is optional and can be skipped by passing the --no-init flag, i.e. bigchaindb start --no-init.
Options
The log level for the console can be set via the option --log-level or its
abbreviation -l. Example:
$ bigchaindb --log-level INFO start
The allowed levels are DEBUG, INFO, WARNING, ERROR, and CRITICAL.
For an explanation regarding these levels please consult the
Logging Levels
section of Python's documentation.
For a more fine-grained control over the logging configuration you can use the configuration file as documented under Configuration Settings.
bigchaindb upsert-validator
This is an experimental feature. Users are advised not to use it in production.
Manage elections to add, update, or remove a validator from the validators set of the local node. The upsert-validator subcommands implement BEP-21. Check it out if you need more details on how this is orchestrated.
Election management is broken into several subcommands. Below is the command line syntax for each,
upsert-validator new
Calls a new election, proposing a change to the validator set.
Below is the command line syntax and the return value,
$ bigchaindb upsert-validator new E_PUBKEY E_POWER E_NODE_ID --private-key PATH_TO_YOUR_PRIVATE_KEY
<election_id>
Here, E_PUBKEY, E_POWER, and E_NODE_ID are the public key, proposed power, and node id of the validator being voted on. --private-key should be the path to wherever the private key for your validator node is stored, (not the private key itself.). For example, to add a new validator, provide the public key and node id for some node not already in the validator set, along with whatever voting power you'd like them to have. To remove an existing validator, provide their public key and node id, and set E_POWER to 0.
Example usage,
$ bigchaindb upsert-validator new B0E42D2589A455EAD339A035D6CE1C8C3E25863F268120AA0162AD7D003A4014 1 12345 --private-key /home/user/.tendermint/config/priv_validator.json
If the command succeeds, it will create an election and return an election_id. Elections consist of one vote token per voting power, issued to the members of the validator set. Validators can cast their votes to approve the change to the validator set by spending their vote tokens. The status of the election can be monitored by providing the election_id to the show subcommand.