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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 auto-generate a public-private keypair and then ask you for the values of other configuration settings. If you press Enter for a value, it will use the default value.
Since BigchainDB supports multiple databases you need to always specify the
database backend that you want to use. At this point only two database backends
are supported: rethinkdb and mongodb.
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 rethinkdb
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 just generate a keypair and use the default values for all the other configuration settings.
bigchaindb -y configure rethinkdb
bigchaindb show-config
Show the values of the BigchainDB node configuration settings.
bigchaindb export-my-pubkey
Write the node's public key (i.e. one of its configuration values) to standard output (stdout).
bigchaindb init
Create a backend database (RethinkDB or MongoDB), all database tables/collections, various backend database indexes, and the genesis block.
bigchaindb drop
Drop (erase) the backend database (a RethinkDB or MongoDB database).
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 note in 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.
You can also use the --dev-start-rethinkdb command line option to automatically start rethinkdb with bigchaindb if rethinkdb is not already running,
e.g. bigchaindb --dev-start-rethinkdb start. Note that this will also shutdown rethinkdb when the bigchaindb process stops.
The option --dev-allow-temp-keypair will generate a keypair on the fly if no keypair is found, this is useful when you want to run a temporary instance of BigchainDB in a Docker container, for example.
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 set-shards
This command is specific to RethinkDB so it will only run if BigchainDB is
configured with rethinkdb as the backend.
If RethinkDB is the backend database, then:
$ bigchaindb set-shards 4
will set the number of shards (in all RethinkDB tables) to 4.
bigchaindb set-replicas
This command is specific to RethinkDB so it will only run if BigchainDB is
configured with rethinkdb as the backend.
If RethinkDB is the backend database, then:
$ bigchaindb set-replicas 3
will set the number of replicas (of each shard) to 3 (i.e. it will set the replication factor to 3).
bigchaindb add-replicas
This command is specific to MongoDB so it will only run if BigchainDB is
configured with mongodb as the backend.
This command is used to add nodes to a BigchainDB cluster. It accepts a list of space separated hosts in the form hostname:port:
$ bigchaindb add-replicas server1.com:27017 server2.com:27017 server3.com:27017
bigchaindb remove-replicas
This command is specific to MongoDB so it will only run if BigchainDB is
configured with mongodb as the backend.
This command is used to remove nodes from a BigchainDB cluster. It accepts a list of space separated hosts in the form hostname:port:
$ bigchaindb remove-replicas server1.com:27017 server2.com:27017 server3.com:27017