Kafka to Postgresql v2
The technical documentation of the kafka-to-postgresql-v2 microservice,
which consumes messages from a Kafka broker and writes them in a PostgreSQL
database by following the UMH data model v2.
2 minute read
Kubernetes resources
- Deployment:
united-manufacturing-hub-kafkatopostgresqlv2
Configuration
You shouldn’t need to configure kafka-to-postgresql-v2 manually, as it’s configured
automatically when the cluster is deployed. However, if you need to change the
configuration, you can do it by editing the kafkatopostgresqlv2 section of the Helm
chart values file.
Environment variables
| Variable name | Description | Type | Allowed values | Default |
|---|---|---|---|---|
KAFKA_BROKERS | Specifies the URLs and required ports of Kafka brokers using the Kafka protocol. | string | Any | united-manufacturing-hub-kafka:9092 |
KAFKA_HTTP_BROKERS | Specifies the URLs and required ports of Kafka brokers using the HTTP protocol. | string | Any | united-manufacturing-hub-kafka:8082 |
LOGGING_LEVEL | Determines the verbosity of the logging output, primarily used for development purposes. | string | PRODUCTION, DEVELOPMENT | PRODUCTION |
POSTGRES_DATABASE | Designates the name of the target PostgreSQL database. | string | Any | umh_v2 |
POSTGRES_HOST | Identifies the hostname for the PostgreSQL database server. | string | Any | united-manufacturing-hub |
POSTGRES_LRU_CACHE_SIZE | Determines the size of the Least Recently Used (LRU) cache for asset ID storage. This cache is optimized for minimal memory usage. | string | Any | 1000 |
POSTGRES_PASSWORD | Sets the password for accessing the PostgreSQL database | string | Any | changemetoo |
POSTGRES_PORT | Specifies the network port for the PostgreSQL database server. | string | Any | 5432 |
POSTGRES_SSL_MODE | Configures the PostgreSQL connection to use SSL if set to ’true'. | string | Any | require |
POSTGRES_USER | Defines the username for PostgreSQL database access. | string | Any | kafkatopostgresqlv2 |
VALUE_CHANNEL_SIZE | Sets the size of the channel for message storage prior to insertion. This parameter is significant for memory consumption | string | Any | 10000 |
WORKER_MULTIPLIER | This multiplier affects the number of workers converting Kafka messages into the PostgreSQL schema. Total workers = cores * multiplier. | string | Any | 16 |
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