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Migrating from Talend Dictionary Service 7.x installed with an external MongoDB

Before you begin

You have downloaded Talend Dictionary Service 8.0.


  1. Stop your instance of the previous version of Talend Dictionary Service but keep MongoDB running.
  2. Open a mongo shell as Talend Dictionary Service database user and back up the MongoDB instance used for the previous version of Talend Dictionary Service using the following command:
    mongodump -h <>:<mongodb.port> -d <mongodb.database> -u <mongodb.user> -p <mongodb.password> -o <dump_output> 
    The default value for the embedded MongoDB properties are the following:
    Property Value localhost
    mongodb.port 27017
    mongodb.database dqdict
    mongodb.user dqdict-user
    mongodb.password duser


    mongodump -h localhost:27017 -d dqdict -u dqdict-user -p duser -o dump\
  3. Stop your MongoDB instance.
  4. Install MongoDB 4.4 and start it.
    Talend Dictionary Service 8.0 uses the 4.4 version of MongoDB.
  5. Restore MongoDB, open a command prompt window and execute the following command: <mongo_path>/bin/mongorestore -h <mongo_host>:<mongo_port> -u <mongo_dq_username> -p <mongo_dq_password> -d <mongo_dq_database> <backup_location>


    mongorestore -h localhost:27017 -d dqdict -u dqdict-user -p duser dump\       
  6. Install Talend Dictionary Service 8.0 with the external MongoDB, and configure it with the same settings as your instance of the previous version of Talend Dictionary Service, especially the links to your Talend Administration Center and point to MongoDB 4.4.
    For more information about the Talend Dictionary Service installation and configuration procedures, see Installing and configuring Talend Dictionary Service.
  7. Open the previous version of the <Tomcat>/conf/ file and the new version.
  8. In the new version of the file, replace the following parameter names with the new names:
    Previous parameter name New parameter name
  9. If you have performed any custom configuration to the previous version of the file, update the 8.0 version of the file by coping the values from the old configuration file.
  10. Start Talend Dictionary Service 8.0 by launching, in this order:
    • Apache ZooKeeper
    • Apache Kafka
    • Apache Tomcat (Talend Administration Center server and Talend Identity and Access Management server)
    • MongoDB
    • MinIO


You are ready to use Talend Dictionary Service 8.0.

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