The Corda Configuration File¶
Configuration File Location¶
The Corda all-in-one corda.jar
file is generated by the gradle buildCordaJAR
task and defaults to reading configuration from a node.conf
file in the present working directory.
This behaviour can be overidden using the --config-file
command line option to target configuration files with different names, or different file location (relative paths are relative to the current working directory).
Also, the --base-directory
command line option alters the Corda node workspace location and if specified a node.conf
configuration file is then expected in the root of the workspace.
The configuration file templates used for the gradle deployNodes
task are to be found in the /config/dev
folder. Also note that there is a basic set of defaults loaded from
the built in resource file /node/src/main/resources/reference.conf
of the :node
gradle module. All properties in this can be overidden in the file configuration
and for rarely changed properties this defaulting allows the property to be excluded from the configuration file.
Configuration File Format¶
Corda uses the Typesafe configuration library to parse the configuration see the typesafe config on Github the format of the configuration files can be simple JSON, but for the more powerful substitution features uses HOCON format see HOCON documents
Configuration File Examples¶
General node configuration file for hosting the IRSDemo services.
basedir : "./nodea"
myLegalName : "Bank A"
nearestCity : "London"
keyStorePassword : "cordacadevpass"
trustStorePassword : "trustpass"
dataSourceProperties : {
dataSourceClassName : org.h2.jdbcx.JdbcDataSource
"dataSource.url" : "jdbc:h2:"${basedir}"/persistence"
"dataSource.user" : sa
"dataSource.password" : ""
}
artemisAddress : "localhost:31337"
webAddress : "localhost:31339"
extraAdvertisedServiceIds: "corda.interest_rates"
networkMapAddress : "localhost:12345"
useHTTPS : false
rpcUsers : [
{ user=user1, password=letmein, permissions=[ cash ] }
]
NetworkMapService plus Simple Notary configuration file.
basedir : "./nameserver"
myLegalName : "Notary Service"
nearestCity : "London"
keyStorePassword : "cordacadevpass"
trustStorePassword : "trustpass"
artemisAddress : "localhost:12345"
webAddress : "localhost:12346"
extraAdvertisedServiceIds: ""
useHTTPS : false
Configuration File Fields¶
basedir: | This specifies the node workspace folder either as an absolute path, or relative to the current working directory. It can be overidden by the |
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myLegalName: | The legal identity of the node acts as a human readable alias to the node’s public key and several demos use this to lookup the NodeInfo. |
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nearestCity: | The location of the node as used to locate coordinates on the world map when running the network simulator demo. See Network Simulator. |
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keyStorePassword: | |||||||
The password to unlock the KeyStore file ( note:: This is the non-secret value for the development certificates automatically generated during the first node run. Longer term these keys will be managed in secure hardware devices. |
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trustStorePassword: | |||||||
The password to unlock the Trust store file ( Note Longer term these keys will be managed in secure hardware devices. |
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dataSourceProperties: | |||||||
This section is used to configure the jdbc connection and database driver used for the nodes persistence. Currently the defaults in |
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artemisAddress: | The host and port on which the node is available for protocol operations over ArtemisMQ. Note In practice the ArtemisMQ messaging services bind to all local addresses on the specified port. However, note that the host is the included as the advertised entry in the NetworkMapService. As a result the value listed here must be externally accessible when running nodes across a cluster of machines. |
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messagingServerAddress: | |||||||
The address of the ArtemisMQ broker instance. If not provided the node will run one locally. |
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webAddress: | The host and port on which the node is available for web operations. Note If HTTPS is enabled then the browser security checks will require that the accessing url host name is one of either the machine name, fully qualified machine name, or server IP address to line up with the Subject Alternative Names contained within the development certificates. This is addition to requiring the |
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extraAdvertisedServiceIds: | |||||||
A list of ServiceType id strings to be advertised to the NetworkMapService and thus be available when other nodes query the NetworkMapCache for supporting nodes. This can also include plugin services loaded from .jar files in the plugins folder. |
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networkMapAddress: | |||||||
If null, or missing the node is declaring itself as the NetworkMapService host. Otherwise the configuration value is the remote HostAndPort string for the ArtemisMQ service on the hosting node. |
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useHTTPS: | If false the node’s web server will be plain HTTP. If true the node will use the same certificate and private key from the |
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rpcUsers: | A list of users who are authorised to access the RPC system. Each user in the list is a config object with the following fields:
If this field is absent or an empty list then RPC is effectively locked down. |