h1. Introduction

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The Petals ESB Registry node configuration is divided into several parts:
* an [environment configuration|#EnvironmentConfig] to set the right options of the JVM running the Petals ESB Registry node,
* a [node configuration|#NodeConfig] to set all parameters that are internal to the Petals ESB Registry node (ie. that are not used by other nodes),
* a [logging configuration|Logging in Petals ESB Registry] to configure the logging systems of the Petals ESB Regsitry node,
* the [cluster configuration|Cluster Configuration] in which the Petals ESB Registry node is running, to define other nodes of the Petals ESB Registry clustertopology..

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h1. Node environment configuration

The environment configuration aims to set the right options of the JVM. For example, it is in this configuration that you set the memory size of the JVM running your Petals ESB Regsitry node.

Each installation archive comes with a default environment configuration:

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h1. Node configuration reference

The node configuration is located into the file {{member.properties}} and expressed as property (key/value).
A property value can be set using the value of another property as a variable using a placeholder mechanism, and you can add your own properties:
{code}
my-identifier = sample-member-0
petals.registry.overlay.member.logging-cfg-file=/etc/petals-registry/member-available/${my-identifier}/logging.properties
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The property {{petals.environment.config.file}} does not accept placeholder.
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h2. Node configuration reference

|| Parameter/Property name || Default value || Description ||

|| JMX || || ||
| {{petals.registry.overlay.member.jmx.server.connector.disable}} | {{false}} | If {{false}}, the JMX API will be disabled. *Recommended value: {{true}}*.|
| {{petals.registry.overlay.member.jmx.port}} | {{7750}} | The listening port of the JMX API. |
| {{petals.registry.overlay.member.jmx.username}} | {{petals}} | Username part of the JMX API credentials |
| {{petals.registry.overlay.member.jmx.password}} | {{petals}} | Password part of the JMX API credentials |

{anchor:default_value_cluster_xml}+Note 1:+ If the node configuration, ie. {{member.properties}}, is defined by a file-based URL, the default value is {{cluster.xml}} in the same directory than the node configuration. Otherwise, no default value is defined and a value *MUST* be provided.