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DataHub Upgrade Docker Image

This container is used to automatically apply upgrades from one version of DataHub to another.

Supported Upgrades​

As of today, there are 2 supported upgrades:

  1. NoCodeDataMigration: Performs a series of pre-flight qualification checks and then migrates metadata_aspect table data to metadata_aspect_v2 table. Arguments:

    - *batchSize* (Optional): The number of rows to migrate at a time. Defaults to 1000.
    - *batchDelayMs* (Optional): The number of milliseconds of delay between migrated batches. Used for rate limiting. Defaults to 250. 
    - *dbType* (optional): The target DB type. Valid values are `MYSQL`, `MARIA`, `POSTGRES`. Defaults to `MYSQL`.

  2. NoCodeDataMigrationCleanup: Cleanses graph index, search index, and key-value store of legacy DataHub data (metadata_aspect table) once the No Code Data Migration has completed successfully. No arguments.

  3. RestoreIndices: Restores indices by fetching the latest version of each aspect and producing MAE

  4. RestoreBackup: Restores the storage stack from a backup of the local database

Environment Variables​

To run the datahub-upgrade container, some environment variables must be provided in order to tell the upgrade CLI where the running DataHub containers reside.

Below details the required configurations. By default, these configs are provided for local docker-compose deployments of DataHub within docker/datahub-upgrade/env/docker.env. They assume that there is a Docker network called datahub_network where the DataHub containers can be found.

These are also the variables used when the provided datahub-upgrade.sh script is executed. To run the upgrade CLI for non-local deployments, follow these steps:

  1. Define new ".env" variable to hold your environment variables.

The following variables may be provided: 

# Required Environment Variables
EBEAN_DATASOURCE_USERNAME=datahub
EBEAN_DATASOURCE_PASSWORD=datahub
EBEAN_DATASOURCE_HOST=<your-ebean-host>:3306
EBEAN_DATASOURCE_URL=jdbc:mysql://<your-ebean-host>:3306/datahub?verifyServerCertificate=false&useSSL=true&useUnicode=yes&characterEncoding=UTF-8
EBEAN_DATASOURCE_DRIVER=com.mysql.jdbc.Driver

KAFKA_BOOTSTRAP_SERVER=<your-kafka-host>:29092
KAFKA_SCHEMAREGISTRY_URL=http://<your-kafka-host>:8081

ELASTICSEARCH_HOST=<your-elastic-host>
ELASTICSEARCH_PORT=9200

NEO4J_HOST=http://<your-neo-host>:7474
NEO4J_URI=bolt://<your-neo-host>
NEO4J_USERNAME=neo4j
NEO4J_PASSWORD=datahub

DATAHUB_GMS_HOST=<your-gms-host>>
DATAHUB_GMS_PORT=8080

DATAHUB_MAE_CONSUMER_HOST=<your-mae-consumer-host>
DATAHUB_MAE_CONSUMER_PORT=9091

# Optional Arguments

# Uncomment and set these to support SSL connection to Elasticsearch
# ELASTICSEARCH_USE_SSL=
# ELASTICSEARCH_SSL_PROTOCOL=
# ELASTICSEARCH_SSL_SECURE_RANDOM_IMPL=
# ELASTICSEARCH_SSL_TRUSTSTORE_FILE=
# ELASTICSEARCH_SSL_TRUSTSTORE_TYPE=
# ELASTICSEARCH_SSL_TRUSTSTORE_PASSWORD=
# ELASTICSEARCH_SSL_KEYSTORE_FILE=
# ELASTICSEARCH_SSL_KEYSTORE_TYPE=
# ELASTICSEARCH_SSL_KEYSTORE_PASSWORD=
  1. Pull (or build) & execute the datahub-upgrade container:
docker pull acryldata/datahub-upgrade:head && docker run --env-file *path-to-custom-env-file.env* acryldata/datahub-upgrade:head -u NoCodeDataMigration

Arguments​

The primary argument required by the datahub-upgrade container is the name of the upgrade to perform. This argument can be specified using the -u flag when running the datahub-upgrade container.

For example, to run the migration named "NoCodeDataMigration", you would do execute the following:

./datahub-upgrade.sh -u NoCodeDataMigration

OR

docker pull acryldata/datahub-upgrade:head && docker run --env-file env/docker.env acryldata/datahub-upgrade:head -u NoCodeDataMigration

In addition to the required -u argument, each upgrade may require specific arguments. You can provide arguments to individual upgrades using multiple -a arguments.

For example, the NoCodeDataMigration upgrade provides 2 optional arguments detailed above: batchSize and batchDelayMs. To specify these, you can use a combination of -a arguments and of the form argumentName=argumentValue as follows:

./datahub-upgrade.sh -u NoCodeDataMigration -a batchSize=500 -a batchDelayMs=1000 // Small batches with 1 second delay.

OR 

docker pull acryldata/datahub-upgrade:head && docker run --env-file env/docker.env acryldata/datahub-upgrade:head -u NoCodeDataMigration -a batchSize=500 -a batchDelayMs=1000