wildfly registering mysql as a datasource - mysql

Question

I have been trying to configure mysql as a datasource in wildfly. I am not sure what i am missing out, i get an error on startup .
I have the mysql-connector-java-5.0.8-bin.jar and the module.xml in the folder:
"/wildfly-8.1.0.Final/modules/system/layers/base/com/mysql/main"
below are the files
module.xml
<module xmlns="urn:jboss:module:1.1"
name="com.mysql">
<resources>
<resource-root path="mysql-connector-java-5.0.8.jar"/>
<!-- Insert resources here -->
</resources>
<dependencies>
<module name="javax.api"/>
<module name="javax.transaction.api"/>
<module name="javax.servlet.api" optional="true"/>
</dependencies>
</module>
standalone.xml
<datasource jndi-name="java:jboss/datasources/ExampleDS" pool-name="ExampleDS" enabled="true" use-java-context="true">
<connection-url>jdbc:h2:mem:test;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE</connection-url>
<driver>h2</driver>
<security>
<user-name>sa</user-name>
<password>sa</password>
</security>
</datasource>
<datasource jta="true" jndi-name="java:jboss/datasources/proj" pool-name="proj" enabled="true" use-java-context="true" use-ccm="true">
<connection-url>jdbc:mysql://localhost:3306</connection-url>
<driver>mysql</driver>
<security>
<user-name>root</user-name>
<password>admin123</password>
</security>
<statement>
<prepared-statement-cache-size>32</prepared-statement-cache-size>
<share-prepared-statements>true</share-prepared-statements>
</statement>
</datasource>
<drivers>
<driver name="mysql" module="com.mysql">
<xa-datasource-class>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</xa-datasource-class>
</driver>
<driver name="h2" module="com.h2database.h2">
<xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>
</driver>
</drivers>
</datasources>
I have tested the jdbc connectivity with a standalone program in eclipse and it worked
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class ConnectSql {
public static void main(String []args){
String userName = "root";
String pass = "admin123";
String url = "jdbc:mysql://localhost/";
String driver ="com.mysql.jdbc.Driver";
String db = "proj";
try{
//registering the driver.
Class.forName(driver);
Connection con = DriverManager.getConnection(url+db,userName,pass);
Statement st = con.createStatement();
ResultSet rs = st.executeQuery("select f_name from t_users");
while(rs.next()){
System.out.println("name :"+rs.getString(1));
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
catch(ClassNotFoundException cnf){
cnf.printStackTrace();
}
}
}
Referred to the below link and modified the module.xml
Wildfly 8.0.0 mysql problems with datasource
Here is a the error log i get on start up
02:45:17,169 ERROR [org.jboss.as.controller.management-operation]
(Controller Boot Thread) JBAS014613: Operation ("add") failed -
address: ([
("subsystem" => "datasources"),
("data-source" => "proj") ]) - failure description: {"JBAS014771: Services with missing/unavailable dependencies" => [
"jboss.data-source.java:jboss/datasources/proj is missing [jboss.jdbc-driver.mysql]",
"jboss.driver-demander.java:jboss/datasources/proj is missing [jboss.jdbc-driver.mysql]" ]} 02:45:17,175 ERROR
[org.jboss.as.controller.management-operation] (Controller Boot
Thread) JBAS014613: Operation ("add") failed - address: ([
("subsystem" => "datasources"),
("data-source" => "proj") ]) - failure description: {
"JBAS014771: Services with missing/unavailable dependencies" => [
"jboss.data-source.java:jboss/datasources/proj is missing [jboss.jdbc-driver.mysql]",
"jboss.driver-demander.java:jboss/datasources/proj is missing [jboss.jdbc-driver.mysql]"
],
"JBAS014879: One or more services were unable to start due to one or more indirect dependencies not being available." => {
"Services that were unable to start:" => [
"jboss.data-source.reference-factory.proj",
"jboss.naming.context.java.jboss.datasources.proj"
],
"Services that may be the cause:" => ["jboss.jdbc-driver.mysql"]
} }

Answer 1

To resolve the mysql datasource configuration issue on Wildfly i used the admin console to add the datasource and test it.
If you login to the web console and find the datasource you tried configuring disable
that a remove it . The standalone.xml and the module.xml get reset to the orginal.
Steps for accessing web console
Configure a new datasource :
name :mysql
JNDI :java:jboss/datasources/proj
Click next and enter the url (i used the below) and click enable and then click test
url : jdbc:mysql://localhost/proj
The test should show success
The changes to the standalone.xml and the module.xml are automatically made .
If you restart the server now it should start without any errors and you should be able to access the database from your web project

Answer 2

I have working configuration of mysql driver on wildfly.
<datasources>
// ...
<drivers>
// ...
<driver name="mysql" module="com.mysql.jdbc">
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
<driver-class>com.mysql.jdbc.Driver</driver-class>
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
<xa-datasource-class>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</xa-datasource-class>
</driver>
</drivers>
</datasources>
The little difference seems to be presence of "driver-class" tag.
I hope it will help.
(Deploying mysql driver as a deployment also works and it's recommended way. https://docs.jboss.org/author/display/WFLY8/DataSource+configuration )
[edit]
I have mysql module under wildfly/modules/com/mysql/jdbc/main/ . I've noticed just now you module path doesn't correspond to module name. And I haven't find any doc's just yet, but I don't think you should mess with modules/system directory.
module.xml
<?xml version="1.0" ?>
<module xmlns="urn:jboss:module:1.1" name="com.mysql.jdbc">
<resources>
<resource-root path="mysql-connector-java-5.1.31-bin.jar"/>
</resources>
<dependencies>
<module name="javax.api"/>
<module name="javax.transaction.api"/>
</dependencies>
</module>

Answer 3

Two things: I just got mine working, and have the driver and xml located in $JBOSS_HOME/modules/com/mysql/jdbc/main - I'm fairly new with this as well so I'm not sure if that matters. Another thing: I don't know if it is just a typo, but if it was just copied and pasted it looks like your JAR name is incorrect
<resource-root path="mysql-connector-java-5.0.8.jar"/>
when it should be
<resource-root path="mysql-connector-java-5.0.8-bin.jar"/>
I forgot the .jar in mine, and that ended up fixing it. Hope that helps!

Answer 4

This may happen when you download the mysql connector zip and uploading the zip as a deployment. But the correct way is to unzip your download and point to the contained jar.

Answer 5

There are three ways using which you can simply create datasource into wildfly
Using admin console
Manually adding into standalone.xml
Creating datasource file that is xml file.
Go to WildFly directory/standalone/deployments
Simplest way to create datasource xml with following content
<datasources xmlns="http://www.jboss.org/ironjacamar/schema">
<datasource jndi-name="APP_DS" pool-name="APP_DS" enabled="true" use-ccm="false">
<connection-url>jdbc:mysql://localhost:3306/DB_NAME</connection-url>
<driver-class>com.mysql.jdbc.Driver</driver-class>
<driver>mysql</driver>
<!-- sql to call when connection is created -->
<new-connection-sql>SELECT 1</new-connection-sql>
<pool>
<min-pool-size>5</min-pool-size>
<max-pool-size>50</max-pool-size>
</pool>
<security>
<user-name>username</user-name>
<password>password</password>
</security>
<!-- sql to call on an existing pooled connection when it is obtained from pool -->
<validation>
<check-valid-connection-sql>SELECT 1</check-valid-connection-sql>
</validation>
<timeout>
<blocking-timeout-millis>300000</blocking-timeout-millis>
<idle-timeout-minutes>5</idle-timeout-minutes>
</timeout>
<statement>
<track-statements>true</track-statements>
</statement>
</datasource>
</datasources>