Installation
Configuration
User Authentication
Features
Confluent Cloud
Use kPow to monitor your Confluent Cloud clusters
kPow works out of the box with Confluent Cloud, simply follow our Kafka Cluster configuration documentation to get started.
Extra configuration is required to display disk information related to your clusters, or to monitor multiple Confluent Cloud clusters that share the same bootstrap url.
Confluent Cloud Metrics API Integration
Kpow retrieves the following information via the Confluent Metrics API.
- Broker disk information (
io.confluent.kafka.server/retained_bytes) - Active connection count (
io.confluent.kafka.server/active_connection_count)
Kpow requires this integration to show disk information (both topic and broker) as Confluent Cloud does not support the Kafka AdminClient function that normally returns this data.
Next, add these additional environment variables to your kPow's deployment:
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CONFLUENT_API_KEY=XXXYYYZZZZ
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CONFLUENT_API_SECRET=XXXYYYZZZZYYYZZZZ
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kPow will now collect telemetry about your Confluent Cloud cluster using the Metrics API. Once configured disk metrics/stats will start appearing in kPow's UI.
API Limitations
- Maximum of 50 requests per minute per IP address
- Maximum of 1000 results returned per metrics query
By default, kPow will scrape disk information for all topic partitions. Given Confluent Cloud's imposed limitations it may not be feasible to query at a topic-partition granularity. For example, if you have over 50, 000 partitions in your cluster, you will exceed the imposed rate limiting.
Because of these limitations, telemetry gathered using Confluent Cloud's metrics API will not be available when in live mode.
Configuration
CONFLUENT_DISK_MODE
To get around the API limitations imposed by Confluent Cloud's metrics API, kPow has an additional environment variable:
CONFLUENT_DISK_MODE.Currently two modes are supported:
COMPLETE(default): data is queried at a topic-partition granularity, all replica disk information is complete.INFERRED: data is queried at a topic granularity. Topic-partition replica disk information is estimated based on other kPow telemetry (number of messages in partition, average size of record, etc). Replica disk information at a topic granularity is complete.
If you are bumping up against any of the Confluent Cloud API limitations, it is recommended to set
CONFLUENT_DISK_MODE=INFERRED if you are comfortable with the topic-partition replica disk data being estimated.CONFLUENT_METRICS_URL
If you are using the self-managed Confluent Platform, you can set
CONFLUENT_METRICS_URL=https://my-metrics-endpoint. The default metrics endpoint is
https://api.telemetry.confluent.cloud/v2/metrics/cloud/queryCONFLUENT_PARALLELISM
Specifies the number of parallel HTTP requests made to the Metrics API when collecting disk telemetry. Defaults to 8.
Multi-Tenant Confluent Cloud
To connect to two clusters that share the same
BOOTSTRAP , but are accessed with different auth credentials, provide a unique CLUSTER_ID environment variable for each cluster definition, for example:1
BOOTSTRAP=pkc-5nym1.us-east-1.aws.confluent.cloud:9092
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CLUSTER_ID=confluent-cloud-dev
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SECURITY_PROTOCOL=SASL_SSL
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SASL_MECHANISM=PLAIN
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SASL_JAAS_CONFIG=org.apache.kafka.common.security.plain.PlainLoginModule required username="user-1" password="pass-1";
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SSL_ENDPOINT_IDENTIFICATION_ALGORITHM=https
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CONFLUENT_API_KEY=XXXYYYZZZZ
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CONFLUENT_API_SECRET=XXXYYYZZZZYYYZZZZ
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BOOTSTRAP_2=pkc-5nym1.us-east-1.aws.confluent.cloud:9092
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CLUSTER_ID_2=confluent-cloud-stage
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SECURITY_PROTOCOL_2=SASL_SSL
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SASL_MECHANISM_2=PLAIN
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SASL_JAAS_CONFIG_2=org.apache.kafka.common.security.plain.PlainLoginModule required username="user-2" password="pass-2";
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SSL_ENDPOINT_IDENTIFICATION_ALGORITHM_2=https
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CONFLUENT_API_KEY_2=XXXYYYZZZZ
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CONFLUENT_API_SECRET_2=XXXYYYZZZZYYYZZZZ
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Note: the
CLUSTER_ID environment variable must be unique across all clusters defined in kPow, and can be any unique identifier (eg, the string confluent-cloud-stage)
Last modified 18d ago