How To
Summary
There are times when you need to determine whether Kafka has started successfully.
There are also times when you need to know how long it took to start.
Those information can be found in the Kafka pod log itself.
Steps
(1) Open the Kafka pod log:
oc logs <kafka-pod> | less
Eg.
oc logs iaf-system-kafka-0 | less
(2) Look out for the first log message and take note of the datetime.
Eg.
2024-05-10 17:32:15,829 INFO Starting KafkaAgent with brokerReadyFile=/var/opt/kafka/kafka-ready, sessionConnectedFile=/var/opt/kafka/zk-connected, sslKeyStorePath=/tmp/kafka/cluster.keystore.p12, sslTrustStore=/tmp/kafka/cluster.truststore.p12 (io.strimzi.kafka.agent.KafkaAgent) [main]
(3) Look out for the log message that shows Kafka has started and take note of the datetime.
Eg.
2024-05-10 17:32:36,948 INFO [KafkaServer id=1] started (kafka.server.KafkaServer) [main]
NOTE: If you are unable to find the "Kafka started" log message, please contact IBM Support.
(4) The duration for the start can be calculated by subtracting the datetime of (2) from (3).
Eg.
2024-05-10 17:32:36,948 - 2024-05-10 17:32:15,829 = 21 seconds
Additional Information
The duration calculation of the start time is important because it is needed to decide suitable values for the "initialDelaySeconds" and "periodSeconds" of the liveness and readiness probes of the Kafka pod.
Document Location
Worldwide
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Document Information
Modified date:
16 May 2024
UID
ibm17152849