| Title: System Properties |
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| <a name="SystemProperties-Overridingopenejb.xml"></a> |
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| You can find a list of properties [here](properties-listing.html). But read on to understand how these can be used. |
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| # Overriding openejb.xml |
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| Anything in the openejb.xml file can be overridden via system properties of |
| the format: |
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| `-D<id>.<property-name>=<property-value>` |
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| ..where id is the value in the config file for example: |
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| <Connector id="mysql"> |
| JdbcDriver com.mysql.jdbc.Driver |
| JdbcUrl jdbc:mysql://localhost/test |
| UserName test |
| </Connector> |
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| Could be overridden as follows via system properties on the command line: |
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| > ./bin/openejb start -Dmysql.JdbcDriver=com.mysql.jdbc.Driver |
| > -Dmysql.JdbcUrl=jdbc:mysql://localhost/test -Dmysql.UserName=test |
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| <a name="SystemProperties-OverridingServerServices"></a> |
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| # Overriding Server Services |
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| Any server service installed into OpenEJB can be overridden in the same |
| fashion as things in the openejb.xml file. |
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| For example, when OpenEJB starts it prints out the following: |
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| ** Starting Services ** |
| NAME IP PORT |
| httpejbd 0.0.0.0 4204 |
| telnet 0.0.0.0 4202 |
| ejbd 0.0.0.0 4201 |
| hsql 0.0.0.0 9001 |
| activemq 127.0.0.1 4206 |
| derbynet 0.0.0.0 4205 |
| admin thread 0.0.0.0 4200 |
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| Each of those has the same standard xinet.d-like properties which can also |
| be configured as such: |
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| `-D<id>.<property-name>=<property-value>` |
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| ... where 'id' is the name of the server service and 'property-name' is one |
| of the following: bind, port, threads, disabled, only_from. |
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| So to set the address and port the ejbd service will bind to, simply |
| specify this on the command line: |
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| ./bin/openejb start -Dejbd.bind=192.168.1.12 -Dejbd.port=9988 |