By default, Fedora comes configured to write binary resources (i.e. files) to the file system and RDF resources (i.e. objects) to a LevelDB database. It is often desirable to replace the LevelDB database with a different object store. As of 2016-03-04, the configuration for MySQL or PostgreSQL databases are available within the deployable Fedora war file. Below For testing, a file-based objects database may be useful. However, for production installations, it is recommended to use a MySQL or PostgresSQL object store. Below are the steps to use MySQL or PostgreSQL instead of LevelDB.
MySQL
- Install an instance of MySQL and create a database user account
Run Fedora with the following
JAVA_OPTS
:Code Block JAVA_OPTS="${JAVA_OPTS} -Dfcrepo.modeshape.configuration=classpath:/config/jdbc-mysql/repository.json" JAVA_OPTS="${JAVA_OPTS} -Dfcrepo.ispn.mysql.username=<username>" JAVA_OPTS="${JAVA_OPTS} -Dfcrepo.ispn.mysql.password=<password>" JAVA_OPTS="${JAVA_OPTS} -Dfcrepo.ispn.mysql.host=<default=localhost>" JAVA_OPTS="${JAVA_OPTS} -Dfcrepo.ispn.mysql.port=<default=3306>"
Note, the fcrepo
database must be manually created, the database and table used by ISPN are auto-but the tables will be automatically created.
PostgreSQL
- Install PostgreSQL and create a database called
ispn
andfcrepo
and a user account that can access it - Run Fedora with the following
JAVA_OPTS
:
Code Block |
---|
JAVA_OPTS="${JAVA_OPTS} -Dfcrepo.modeshape.configuration=classpath:/config/jdbc-postgresql/repository.json" JAVA_OPTS="${JAVA_OPTS} -Dfcrepo.ispn.postgresql.username=<username>" JAVA_OPTS="${JAVA_OPTS} -Dfcrepo.ispn.postgresql.password=<password>" JAVA_OPTS="${JAVA_OPTS} -Dfcrepo.ispn.postgresql.host=<default=localhost>" JAVA_OPTS="${JAVA_OPTS} -Dfcrepo.ispn.postgresql.port=<default=5432>" |
Note, the ispn
fcrepo
database must be manually created, but the tables will be automatically created.
JNDI Configuration
For both of the configurations above, you may alternatively use JNDI to connect to the MySQL or PostgreSQL databases.
This was accomplished for MySQL with Tomcat 7.0.54 on RHEL 7.2 as follows: (Note: Fedora web app is deployed as 'fcrepo'. Database username and password masked.)
- Define the JNDI resource
/usr/share/tomcat/conf/Catalina/locahost/fcrepo.xml
Code Block | ||
---|---|---|
| ||
<Context path="/fcrepo"> <Resource name="jdbc/ispn" auth="Container" type="javax.sql.DataSource" username="***********" password="*************" driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://127.0.0.1:3306/ispn?createDatabaseIfNotExist=true" factory="org.apache.commons.dbcp.BasicDataSourceFactory" /> </Context> |
- Modify Infinispan configuration
In inifinispan.xml :
Comment out <jdbc:connection-pool /> element.
Uncomment <jdbc:data-source /> element and set it as follows (to match the JNDI resource defined above):
Code Block | ||
---|---|---|
| ||
<jdbc:data-source jndi-url="java:comp/env/jdbc/ispn"/> |
Modeshape 5.x
Databases tested with the experimental Modeshape 5.0 branch:
- MySQL 5.5.49
- PostgreSQL 9.4 - 9.5
Database Setup
PostgreSQL
To create a new database and user in PostgreSQL, assuming a username of user1
and a password of xyz
:
Code Block |
---|
$ sudo -u postgres psql
> create database fcrepo;
> create user user1;
> alter user user1 password 'xyz';
> grant all privileges on database fcrepo to user1;
> \q |