# K2K

**URL:** https://ask.lenses.io/c/k2k/10.md

[Latest](https://ask.lenses.io/latest.md) · [Categories](https://ask.lenses.io/categories.md) · [Tags](https://ask.lenses.io/tags.md)

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## [About the K2K category](https://ask.lenses.io/t/about-the-k2k-category/411)

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**Author:** [@Marios](https://ask.lenses.io/u/Marios)\
**Replies:** 0\
**Last updated:** [July 29, 2025, 3:42pm UTC](https://ask.lenses.io/t/about-the-k2k-category/411 "2025-07-29T15:42:18Z")

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For all questions & answers related to installing, configuring or operating k2k, the Kafka to Kafka topic mirroring tool.

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## [SSL Error when trying to connect K2K to my cluster](https://ask.lenses.io/t/ssl-error-when-trying-to-connect-k2k-to-my-cluster/429)

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**Author:** [@kafkaesque](https://ask.lenses.io/u/kafkaesque)\
**Replies:** 1\
**Last updated:** [September 5, 2025, 11:01am UTC](https://ask.lenses.io/t/ssl-error-when-trying-to-connect-k2k-to-my-cluster/429 "2025-09-05T11:01:33Z")

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Anyone with some SSL experience available to help me out troubleshoot an issue with some K2K connectivity?? I’m getting a very expressive: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAn…

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## ["license token" for Lenses K2K](https://ask.lenses.io/t/license-token-for-lenses-k2k/419)

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**Author:** [@james1985](https://ask.lenses.io/u/james1985)\
**Replies:** 1\
**Last updated:** [August 12, 2025, 4:44pm UTC](https://ask.lenses.io/t/license-token-for-lenses-k2k/419 "2025-08-12T16:44:15Z")

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Trying to launch Lenses K2K. In my pipeline YAML I’ve set: license: acceptEula: true …but I’m getting the error: Please provide a valid license token in the configuration file or as an environment variable.

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## [autoCreateTopics problems in k2k kafka replication configuration for MSK Serverless](https://ask.lenses.io/t/autocreatetopics-problems-in-k2k-kafka-replication-configuration-for-msk-serverless/406)

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**Author:** [@james1985](https://ask.lenses.io/u/james1985)\
**Replies:** 4\
**Last updated:** [July 30, 2025, 3:21pm UTC](https://ask.lenses.io/t/autocreatetopics-problems-in-k2k-kafka-replication-configuration-for-msk-serverless/406 "2025-07-30T15:21:55Z")

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Seems like when I try to set autoCreateTopics on k2k config, such as: name: "test-k2k" features: autoCreateControlTopics: enabled autoCreateTopics: enabled coordination: kafka: …I’m getting the errors: 00.0, 500…

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## [Anyone got a MSK to MSK kafka2kafka replication k2k.yaml example?](https://ask.lenses.io/t/anyone-got-a-msk-to-msk-kafka2kafka-replication-k2k-yaml-example/404)

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**Author:** [@james1985](https://ask.lenses.io/u/james1985)\
**Replies:** 1\
**Last updated:** [July 22, 2025, 10:39pm UTC](https://ask.lenses.io/t/anyone-got-a-msk-to-msk-kafka2kafka-replication-k2k-yaml-example/404 "2025-07-22T22:39:25Z")

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Anyone got an example k2k.yml config file for replicating data from one MSK cluster to another with Lenses k2k replicator?

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## ["MissingControlTopic" when trying to run Lenses K2K app](https://ask.lenses.io/t/missingcontroltopic-when-trying-to-run-lenses-k2k-app/402)

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**Author:** [@james1985](https://ask.lenses.io/u/james1985)\
**Replies:** 1\
**Last updated:** [July 22, 2025, 10:35pm UTC](https://ask.lenses.io/t/missingcontroltopic-when-trying-to-run-lenses-k2k-app/402 "2025-07-22T22:35:59Z")

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I’m testing K2K against my MSK Serverless instances. It’s complaining of “MissingControlTopic” k2k\_1 | INFO: Received a collection of 1 metrics for export. k2k\_1 | Jul 14, 2025 8:59:54 PM io.opentelemetry.exporter.log…