corda/docs/source/deploying-a-node.rst

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Deploying a node
================
.. contents::
.. note:: These instructions are intended for people who want to deploy a Corda node to a server,
whether they have developed and tested a CorDapp following the instructions in :doc:`generating-a-node`
or are deploying a third-party CorDapp.
Linux (systemd): Installing and running Corda as a systemd service
------------------------------------------------------------------
We recommend creating systemd services to run a node and the optional webserver. This provides logging and service
handling, and ensures the Corda service is run at boot.
**Prerequisites**:
* Oracle Java 8. The supported versions are listed in :doc:`getting-set-up`
1. Add a system user which will be used to run Corda:
``sudo adduser --system --no-create-home --group corda``
2. Create a directory called ``/opt/corda`` and change its ownership to the user you want to use to run Corda:
``mkdir /opt/corda; chown corda:corda /opt/corda``
3. Download the `Corda jar <https://r3.bintray.com/corda/net/corda/corda/>`_
(under ``/VERSION_NUMBER/corda-VERSION_NUMBER.jar``) and place it in ``/opt/corda``
3. Create a directory called ``plugins`` in ``/opt/corda`` and save your CorDapp jar file to it. Alternatively, download one of
our `sample CorDapps <https://www.corda.net/samples/>`_ to the ``plugins`` directory
4. Save the below as ``/opt/corda/node.conf``. See :doc:`corda-configuration-file` for a description of these options
.. code-block:: json
basedir : "/opt/corda"
p2pAddress : "example.com:10002"
rpcAddress : "example.com:10003"
webAddress : "0.0.0.0:10004"
h2port : 11000
emailAddress : "you@example.com"
myLegalName : "O=Bank of Breakfast Tea, L=London, C=GB"
keyStorePassword : "cordacadevpass"
trustStorePassword : "trustpass"
useHTTPS : false
devMode : false
networkMapService {
address="networkmap.foo.bar.com:10002"
legalName="O=FooBar NetworkMap, L=Dublin, C=IE"
}
rpcUsers=[
{
user=corda
password=portal_password
permissions=[
ALL
]
}
]
5. Make the following changes to ``/opt/corda/node.conf``:
* Change the ``p2pAddress`` and ``rpcAddress`` values to start with your server's hostname or external IP address.
This is the address other nodes or RPC interfaces will use to communicate with your node
* Change the ports if necessary, for example if you are running multiple nodes on one server (see below)
* Enter an email address which will be used as an administrative contact during the registration process. This is
only visible to the permissioning service
* Enter your node's desired legal name. This will be used during the issuance of your certificate and should rarely
change as it should represent the legal identity of your node
* Organization (``O=``) should be a unique and meaningful identifier (e.g. Bank of Breakfast Tea)
* Location (``L=``) is your nearest city
* Country (``C=``) is the `ISO 3166-1 alpha-2 code <https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2>`_
* Change the RPC username and password
6. Create a ``corda.service`` file based on the example below and save it in the ``/etc/systemd/system/`` directory
.. code-block:: shell
[Unit]
Description=Corda Node - Bank of Breakfast Tea
Requires=network.target
[Service]
Type=simple
User=corda
WorkingDirectory=/opt/corda
ExecStart=/usr/bin/java -Xmx2048m -jar /opt/corda/corda.jar
Restart=on-failure
[Install]
WantedBy=multi-user.target
7. Make the following changes to ``corda.service``:
* Make sure the service description is informative - particularly if you plan to run multiple nodes.
* Change the username to the user account you want to use to run Corda. **We recommend that this is not root**
* Set the maximum amount of memory available to the Corda process by changing the ``-Xmx2048m`` parameter
* Make sure the ``corda.service`` file is owned by root with the correct permissions:
* ``sudo chown root:root /etc/systemd/system/corda.service``
* ``sudo chmod 644 /etc/systemd/system/corda.service``
.. note:: The Corda webserver provides a simple interface for interacting with your installed CorDapps in a browser.
Running the webserver is optional.
8. Create a ``corda-webserver.service`` file based on the example below and save it in the ``/etc/systemd/system/``
directory.
.. code-block:: shell
[Unit]
Description=Webserver for Corda Node - Bank of Breakfast Tea
Requires=network.target
[Service]
Type=simple
User=username
WorkingDirectory=/opt/corda
ExecStart=/usr/bin/java -jar /opt/corda/corda-webserver.jar
Restart=on-failure
[Install]
WantedBy=multi-user.target
9. Provision the required certificates to your node. Contact the network permissioning service or see
:doc:`permissioning`
10. You can now start a node and its webserver by running the following ``systemctl`` commands:
* ``sudo systemctl daemon-reload``
* ``sudo systemctl corda start``
* ``sudo systemctl corda-webserver start``
You can run multiple nodes by creating multiple directories and Corda services, modifying the ``node.conf`` and
``service`` files so they are unique.
Windows: Installing and running Corda as a Windows service
----------------------------------------------------------
We recommend running Corda as a Windows service. This provides service handling, ensures the Corda service is run
at boot, and means the Corda service stays running with no users connected to the server.
**Prerequisites**:
* Oracle Java 8. The supported versions are listed in :doc:`getting-set-up`
1. Create a Corda directory and download the Corda jar. Replace ``VERSION_NUMBER`` with the desired version. Here's an
example using PowerShell:
.. code-block:: PowerShell
mkdir C:\Corda
wget http://jcenter.bintray.com/net/corda/corda/VERSION_NUMBER/corda-VERSION_NUMBER.jar -OutFile C:\Corda\corda.jar
2. Create a directory called ``plugins`` in ``/opt/corda`` and save your CorDapp jar file to it. Alternatively,
download one of our `sample CorDapps <https://www.corda.net/samples/>`_ to the ``plugins`` directory
3. Save the below as ``C:\Corda\node.conf``. See :doc:`corda-configuration-file` for a description of these options
.. code-block:: json
basedir : "C:\\Corda"
p2pAddress : "example.com:10002"
rpcAddress : "example.com:10003"
webAddress : "0.0.0.0:10004"
h2port : 11000
emailAddress: "you@example.com"
myLegalName : "O=Bank of Breakfast Tea, L=London, C=GB"
keyStorePassword : "cordacadevpass"
trustStorePassword : "trustpass"
extraAdvertisedServiceIds: [ "" ]
useHTTPS : false
devMode : false
networkMapService {
address="networkmap.foo.bar.com:10002"
legalName="O=FooBar NetworkMap, L=Dublin, C=IE"
}
rpcUsers=[
{
user=corda
password=portal_password
permissions=[
ALL
]
}
]
4. Make the following changes to ``C:\Corda\node.conf``:
* Change the ``p2pAddress`` and ``rpcAddress`` values to start with your server's hostname or external IP address.
This is the address other nodes or RPC interfaces will use to communicate with your node
* Change the ports if necessary, for example if you are running multiple nodes on one server (see below)
* Enter an email address which will be used as an administrative contact during the registration process. This is
only visible to the permissioning service
* Enter your node's desired legal name. This will be used during the issuance of your certificate and should rarely
change as it should represent the legal identity of your node
* Organization (``O=``) should be a unique and meaningful identifier (e.g. Bank of Breakfast Tea)
* Location (``L=``) is your nearest city
* Country (``C=``) is the `ISO 3166-1 alpha-2 code <https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2>`_
* Change the RPC username and password
5. Copy the required Java keystores to the node. See :doc:`permissioning`
6. Download the `NSSM service manager <nssm.cc>`_
7. Unzip ``nssm-2.24\win64\nssm.exe`` to ``C:\Corda``
8. Save the following as ``C:\Corda\nssm.bat``:
.. code-block:: batch
nssm install cordanode1 C:\ProgramData\Oracle\Java\javapath\java.exe
nssm set cordanode1 AppDirectory C:\Corda
nssm set cordanode1 AppParameters "-jar corda.jar -Xmx2048m --config-file=C:\corda\node.conf"
nssm set cordanode1 AppStdout C:\Corda\service.log
nssm set cordanode1 AppStderr C:\Corda\service.log
nssm set cordanode1 Description Corda Node - Bank of Breakfast Tea
sc start cordanode1
9. Modify the batch file:
* If you are installing multiple nodes, use a different service name (``cordanode1``) for each node
* Set the amount of Java heap memory available to this node by modifying the -Xmx argument
* Set an informative description
10. Run the batch file by clicking on it or from a command prompt
11. Run ``services.msc`` and verify that a service called ``cordanode1`` is present and running
12. Run ``netstat -ano`` and check for the ports you configured in ``node.conf``
13. You may need to open the ports on the Windows firewall
Testing your installation
-------------------------
You can verify Corda is running by connecting to your RPC port from another host, e.g.:
``telnet your-hostname.example.com 10002``
If you receive the message "Escape character is ^]", Corda is running and accessible. Press Ctrl-] and Ctrl-D to exit
telnet.