mirror of
https://github.com/corda/corda.git
synced 2024-12-28 16:58:55 +00:00
f31afd1520
# Conflicts: # build.gradle # docs/source/_static/versions # docs/source/running-a-node.rst
76 lines
3.0 KiB
ReStructuredText
76 lines
3.0 KiB
ReStructuredText
Running nodes locally
|
|
=====================
|
|
|
|
.. contents::
|
|
|
|
.. note:: You should already have generated your node(s) with their CorDapps installed by following the instructions in
|
|
:doc:`generating-a-node`.
|
|
|
|
There are several ways to run a Corda node locally for testing purposes.
|
|
|
|
Starting a Corda node using DemoBench
|
|
-------------------------------------
|
|
See the instructions in :doc:`demobench`.
|
|
|
|
.. _starting-an-individual-corda-node:
|
|
|
|
Starting a Corda node from the command line
|
|
-------------------------------------------
|
|
Run a node by opening a terminal window in the node's folder and running:
|
|
|
|
.. code-block:: shell
|
|
|
|
java -jar corda.jar
|
|
|
|
By default, the node will look for a configuration file called ``node.conf`` and a CorDapps folder called ``cordapps``
|
|
in the current working directory. You can override the configuration file and workspace paths on the command line (e.g.
|
|
``./corda.jar --config-file=test.conf --base-directory=/opt/corda/nodes/test``).
|
|
|
|
You can increase the amount of Java heap memory available to the node using the ``-Xmx`` command line argument. For
|
|
example, the following would run the node with a heap size of 2048MB:
|
|
|
|
.. code-block:: shell
|
|
|
|
java -Xmx2048m -jar corda.jar
|
|
|
|
You should do this if you receive an ``OutOfMemoryError`` exception when interacting with the node.
|
|
|
|
Optionally run the node's webserver as well by opening a terminal window in the node's folder and running:
|
|
|
|
.. code-block:: shell
|
|
|
|
java -jar corda-webserver.jar
|
|
|
|
.. warning:: The node webserver is for testing purposes only and will be removed soon.
|
|
|
|
Enabling remote debugging
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
To enable remote debugging of the node, run the following from the terminal window:
|
|
|
|
``java -Dcapsule.jvm.args="-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=5005" -jar corda.jar``
|
|
|
|
This command line will start the debugger on port 5005 and pause the process awaiting debugger attachment.
|
|
|
|
Starting a node with JMX monitoring enabled
|
|
-------------------------------------------
|
|
To enable export of JMX metrics over HTTP via `Jolokia <https://jolokia.org/>`_, run the following from the terminal window:
|
|
|
|
``java -Dcapsule.jvm.args="-javaagent:drivers/jolokia-jvm-1.3.7-agent.jar=port=7005" -jar corda.jar``
|
|
|
|
This command line will start the node with JMX metrics accessible via HTTP on port 7005.
|
|
|
|
See :ref:`Monitoring your node <jolokia_ref>` for further details.
|
|
|
|
Starting all nodes at once from the command line
|
|
------------------------------------------------
|
|
If you created your nodes using ``deployNodes``, a ``runnodes`` shell script (or batch file on Windows) will have been
|
|
generated to allow you to quickly start up all nodes and their webservers. ``runnodes`` should only be used for testing
|
|
purposes.
|
|
|
|
Start the nodes with ``runnodes`` by running the following command from the root of the project:
|
|
|
|
* Linux/macOS: ``build/nodes/runnodes``
|
|
* Windows: ``call build\nodes\runnodes.bat``
|
|
|
|
.. warning:: On macOS, do not click/change focus until all the node terminal windows have opened, or some processes may
|
|
fail to start. |