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026a4864b1
* Introduce new h2Settings config block which overrides h2Port * H2 server listens on localhost by default * Change is backward compatible and old h2Port option can still be used but that always listens on localhost now * Update changelog and docs with H2 changes
68 lines
2.5 KiB
ReStructuredText
68 lines
2.5 KiB
ReStructuredText
Node database
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=============
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Default in-memory database
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--------------------------
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By default, nodes store their data in an H2 database. You can connect directly to a running node's database to see its
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stored states, transactions and attachments as follows:
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* Enable the H2 database access in the node configuration using the following syntax:
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.. sourcecode:: groovy
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h2Settings {
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address: "localhost:0"
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}
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* Download the **last stable** `h2 platform-independent zip <http://www.h2database.com/html/download.html>`_, unzip the zip, and
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navigate in a terminal window to the unzipped folder
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* Change directories to the bin folder: ``cd h2/bin``
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* Run the following command to open the h2 web console in a web browser tab:
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* Unix: ``sh h2.sh``
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* Windows: ``h2.bat``
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* Find the node's JDBC connection string. Each node outputs its connection string in the terminal
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window as it starts up. In a terminal window where a node is running, look for the following string:
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``Database connection URL is : jdbc:h2:tcp://10.18.0.150:56736/node``
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* Paste this string into the JDBC URL field and click ``Connect``, using the default username (``sa``) and no password.
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You will be presented with a web interface that shows the contents of your node's storage and vault, and provides an
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interface for you to query them using SQL.
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The default behaviour is to expose the H2 database on localhost. This can be overridden in the
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node configuration using ``h2Settings.address`` and specifying the address of the network interface to listen on,
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or simply using ``0.0.0.0:0`` to listen on all interfaces.
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PostgreSQL
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----------
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Nodes also have untested support for PostgreSQL 9.6, using PostgreSQL JDBC Driver 42.1.4.
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.. warning:: This is an experimental community contribution, and is currently untested. We welcome pull requests to add
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tests and additional support for this feature.
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Configuration
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~~~~~~~~~~~~~
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Here is an example node configuration for PostgreSQL:
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.. sourcecode:: groovy
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dataSourceProperties = {
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dataSourceClassName = "org.postgresql.ds.PGSimpleDataSource"
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dataSource.url = "jdbc:postgresql://[HOST]:[PORT]/postgres"
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dataSource.user = [USER]
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dataSource.password = [PASSWORD]
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}
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database = {
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transactionIsolationLevel = READ_COMMITTED
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schema = [SCHEMA]
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}
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Note that:
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* The ``database.schema`` property is optional
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* The value of ``database.schema`` is not wrapped in double quotes and Postgres always treats it as a lower-case value
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(e.g. ``AliceCorp`` becomes ``alicecorp``)
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