# Lenses **URL:** https://ask.lenses.io/c/lenses/6.md [Latest](https://ask.lenses.io/latest.md) · [Categories](https://ask.lenses.io/categories.md) · [Tags](https://ask.lenses.io/tags.md) --- ## [About the Lenses category](https://ask.lenses.io/t/about-the-lenses-category/12)
**Author:** [@guillaume.ayme](https://ask.lenses.io/u/guillaume.ayme)\ **Replies:** 0
For all questions & answers related to installing, configuring or operating Lenses, the Developer Experience for any Apache Kafka. --- ## [Issue with Broker Decommissioning in Lenses After Node Pool Change](https://ask.lenses.io/t/issue-with-broker-decommissioning-in-lenses-after-node-pool-change/499)
**Author:** [@iMajna](https://ask.lenses.io/u/iMajna)\ **Replies:** 0\ **Last updated:** [August 24, 2026, 8:56am UTC](https://ask.lenses.io/t/issue-with-broker-decommissioning-in-lenses-after-node-pool-change/499 "2026-08-24T08:56:45Z")
Hi, We are running a Strimzi cluster using KRaft and Node Pools. After switching our storage backend, we created a new node pool and removed the old one. Lenses correctly identified the new brokers, but it still display… --- ## [Does Lenses support Kraft metrics over Jolokia](https://ask.lenses.io/t/does-lenses-support-kraft-metrics-over-jolokia/487)
**Author:** [@PeterHallerborn](https://ask.lenses.io/u/PeterHallerborn)\ **Replies:** 3\ **Last updated:** [August 18, 2026, 10:11am UTC](https://ask.lenses.io/t/does-lenses-support-kraft-metrics-over-jolokia/487 "2026-08-18T10:11:42Z")
Hello. We are currently upgrading to the latest Confluent Platform version and want to use Lenses for the Migration. Of course this means we will go with Kraft instead of the legacy Kafka consensus mechanism. We will in… --- ## [Error creating SQL Processor (but works with admin user)](https://ask.lenses.io/t/error-creating-sql-processor-but-works-with-admin-user/376)
**Author:** [@Patrick\_Polster](https://ask.lenses.io/u/Patrick_Polster)\ **Replies:** 1\ **Last updated:** [July 1, 2026, 9:42am UTC](https://ask.lenses.io/t/error-creating-sql-processor-but-works-with-admin-user/376 "2026-07-01T09:42:56Z")
Error creating SQL Processor. Works with admin user. Gives weird Error message. Error Message: The sql execution mode is not set. please contact your administrator --- ## [Lenses is sending many requests against our MSK JMX endpoint](https://ask.lenses.io/t/lenses-is-sending-many-requests-against-our-msk-jmx-endpoint/470)
**Author:** [@kacaha8004](https://ask.lenses.io/u/kacaha8004)\ **Replies:** 2\ **Last updated:** [May 4, 2026, 8:51am UTC](https://ask.lenses.io/t/lenses-is-sending-many-requests-against-our-msk-jmx-endpoint/470 "2026-05-04T08:51:36Z")
Hi Marios, do you know why Lenses sends so many JMX requests against MSK? We’re seeing a high volume of JMX traffic from Lenses to the MSK cluster and want to understand whether this is expected behavior, configurable … --- ## [Is there a way our JSON Schemas are automatically updated?](https://ask.lenses.io/t/is-there-a-way-our-json-schemas-are-automatically-updated/471)
**Author:** [@kacaha8004](https://ask.lenses.io/u/kacaha8004)\ **Replies:** 2\ **Last updated:** [May 4, 2026, 8:51am UTC](https://ask.lenses.io/t/is-there-a-way-our-json-schemas-are-automatically-updated/471 "2026-05-04T08:51:00Z")
Hi again Marios. is it possible in Lenses to get or infer the latest JSON schema from a topic? At the moment, it looks like Lenses only analyzes the first message in the topic, but our producers have evolved since then… --- ## [Where can I configure Kafka Connect?](https://ask.lenses.io/t/where-can-i-configure-kafka-connect/472)
**Author:** [@kacaha8004](https://ask.lenses.io/u/kacaha8004)\ **Replies:** 2\ **Last updated:** [May 4, 2026, 8:50am UTC](https://ask.lenses.io/t/where-can-i-configure-kafka-connect/472 "2026-05-04T08:50:21Z")
I’m trying to check how Kafka Connect is configured and managed from Lenses, but I’m not sure where this is exposed in the Lenses HQ SQL Studio interface. --- ## [Impossible to login with default username and password through traefik ingress on a local Kubernetes lab environment](https://ask.lenses.io/t/impossible-to-login-with-default-username-and-password-through-traefik-ingress-on-a-local-kubernetes-lab-environment/467)
**Author:** [@Ismael\_Kizito\_Papa](https://ask.lenses.io/u/Ismael_Kizito_Papa)\ **Replies:** 1\ **Last updated:** [March 18, 2026, 11:04am UTC](https://ask.lenses.io/t/impossible-to-login-with-default-username-and-password-through-traefik-ingress-on-a-local-kubernetes-lab-environment/467 "2026-03-18T11:04:11Z")
I have installed Lenses HQ on my local KubeADM on a Macbook Pro. I have used port-forwarding to access the login page and login works fine for it. Now I want to avoid having to use port-forwarding I have apply the trae… --- ## [Lenses Agent v6 not updating to new Schema Registry URL](https://ask.lenses.io/t/lenses-agent-v6-not-updating-to-new-schema-registry-url/466)
**Author:** [@superbrain\_bug](https://ask.lenses.io/u/superbrain_bug)\ **Replies:** 1\ **Last updated:** [February 25, 2026, 12:14pm UTC](https://ask.lenses.io/t/lenses-agent-v6-not-updating-to-new-schema-registry-url/466 "2026-02-25T12:14:43Z")
I’ve checked the provision.yaml file and the schema url is correctly updated there $ kubectl exec -n lenses lenses-agent-000111b7f8-btbhh – ls -la /mnt/provision-secrets/files/ confluentSchemaRegistry: configuration: … --- ## [Unable to serialize record error with SQL Processors](https://ask.lenses.io/t/unable-to-serialize-record-error-with-sql-processors/444)
**Author:** [@james1985](https://ask.lenses.io/u/james1985)\ **Replies:** 1\ **Last updated:** [November 26, 2025, 3:02pm UTC](https://ask.lenses.io/t/unable-to-serialize-record-error-with-sql-processors/444 "2025-11-26T15:02:33Z")
I’m trying to create a SQL Processor that converts an XML topic (VBAK\_VBAP\_2) to a new topic. SET defaults.topic.autocreate=true; INSERT INTO VBAK\_VBAP\_JSON STORE KEY AS STRING VALUE AS STRING SELECT STREAM \* FROM VBAK… --- ## [K2K standalone replication example on Community Edition with two localhost Kafka clusters](https://ask.lenses.io/t/k2k-standalone-replication-example-on-community-edition-with-two-localhost-kafka-clusters/448)
**Author:** [@james1985](https://ask.lenses.io/u/james1985)\ **Replies:** 1\ **Last updated:** [October 26, 2025, 8:18pm UTC](https://ask.lenses.io/t/k2k-standalone-replication-example-on-community-edition-with-two-localhost-kafka-clusters/448 "2025-10-26T20:18:08Z")
I want to test Lenses K2K replication between two clusters connected to Lenses Community edition. Does anyone have some good k2k pipeline examples I can copy from? --- ## [Lenses MCP Server settings for Intellij AI](https://ask.lenses.io/t/lenses-mcp-server-settings-for-intellij-ai/442)
**Author:** [@james1985](https://ask.lenses.io/u/james1985)\ **Replies:** 1\ **Last updated:** [October 16, 2025, 10:17pm UTC](https://ask.lenses.io/t/lenses-mcp-server-settings-for-intellij-ai/442 "2025-10-16T22:17:40Z")
Anyone have an example mcpServers JSON config to setup Intellij AI to Lenses MCP Server? --- ## [SQL Processors Best Practices](https://ask.lenses.io/t/sql-processors-best-practices/434)
**Author:** [@JimLinehan92](https://ask.lenses.io/u/JimLinehan92)\ **Replies:** 1\ **Last updated:** [September 30, 2025, 2:39pm UTC](https://ask.lenses.io/t/sql-processors-best-practices/434 "2025-09-30T14:39:41Z")
Hello, I’m creating a SQL Processor and I’m trying to understand scaling runners. What’s really happening under the hood? I understand it’s running on Kubernetes, so does scaling mean more pods? And does that automatica… --- ## [Can I connect Lenses 6.0 to GCP Managed Apache Kafka?](https://ask.lenses.io/t/can-i-connect-lenses-6-0-to-gcp-managed-apache-kafka/433)
**Author:** [@james1985](https://ask.lenses.io/u/james1985)\ **Replies:** 1\ **Last updated:** [September 17, 2025, 3:07pm UTC](https://ask.lenses.io/t/can-i-connect-lenses-6-0-to-gcp-managed-apache-kafka/433 "2025-09-17T15:07:29Z")
I’m looking to test Lenses 6.0 with Google’s Apache Kafka but want to ensure it’s supported. --- ## [How does Lenses infer message Key/Value Serialisation type for a topic?](https://ask.lenses.io/t/how-does-lenses-infer-message-key-value-serialisation-type-for-a-topic/432)
**Author:** [@digital\_weatherwax](https://ask.lenses.io/u/digital_weatherwax)\ **Replies:** 1\ **Last updated:** [September 16, 2025, 7:46am UTC](https://ask.lenses.io/t/how-does-lenses-infer-message-key-value-serialisation-type-for-a-topic/432 "2025-09-16T07:46:29Z")
Hi Team! Because of a problem with our configuration we had to rebuild the Lenses database by dropping and reimporting the configuration. However, after Lenses was running again, we detected that the types of keys and v… --- ## [Publish Messages without Schema Validation](https://ask.lenses.io/t/publish-messages-without-schema-validation/430)
**Author:** [@digital\_weatherwax](https://ask.lenses.io/u/digital_weatherwax)\ **Replies:** 1\ **Last updated:** [September 10, 2025, 6:38am UTC](https://ask.lenses.io/t/publish-messages-without-schema-validation/430 "2025-09-10T06:38:29Z")
Hi Team! In our Kafka platform we have a couple of topics with complex schemas. For testing purposes we would like to publish messages via Lenses to those topics. However, with the complexity of the schemas we find it i… --- ## [Lenses CLI: redaction types for data policies](https://ask.lenses.io/t/lenses-cli-redaction-types-for-data-policies/422)
**Author:** [@superbrain\_bug](https://ask.lenses.io/u/superbrain_bug)\ **Replies:** 1\ **Last updated:** [August 28, 2025, 8:38am UTC](https://ask.lenses.io/t/lenses-cli-redaction-types-for-data-policies/422 "2025-08-28T08:38:44Z")
Hello folks! I’m getting some bad behaviour with policies and the redaction type, even though I created the policy with the redaction field established as All in the yaml file, once the policy is created this field is f… --- ## [Lenses CLI: invalid input field:connection, error:Connection does not exist](https://ask.lenses.io/t/lenses-cli-invalid-input-field-connection-error-connection-does-not-exist/421)
**Author:** [@superbrain\_bug](https://ask.lenses.io/u/superbrain_bug)\ **Replies:** 2\ **Last updated:** [August 27, 2025, 11:50am UTC](https://ask.lenses.io/t/lenses-cli-invalid-input-field-connection-error-connection-does-not-exist/421 "2025-08-27T11:50:08Z")
Hello folks! We are using Lenses CLI 5.5.5 for importing user groups. This is how our yaml looks like name: crp description: CRP Lenses Group dataNamespaces: - wildcards: - crp\_.\* - crp-\* permissions: - QueryT… --- ## [How to make a read only account in Lenses 6?](https://ask.lenses.io/t/how-to-make-a-read-only-account-in-lenses-6/418)
**Author:** [@kafkaesque](https://ask.lenses.io/u/kafkaesque)\ **Replies:** 0\ **Last updated:** [August 6, 2025, 2:24pm UTC](https://ask.lenses.io/t/how-to-make-a-read-only-account-in-lenses-6/418 "2025-08-06T14:24:27Z")
Hello i’m trying to make a read-only account to give visibility to parts of my org, but I don’t want them to be able to change anything. Thanks!! --- ## [Question about K2K replication and wildcards](https://ask.lenses.io/t/question-about-k2k-replication-and-wildcards/405)
**Author:** [@kafkaesque](https://ask.lenses.io/u/kafkaesque)\ **Replies:** 1\ **Last updated:** [August 6, 2025, 2:23pm UTC](https://ask.lenses.io/t/question-about-k2k-replication-and-wildcards/405 "2025-08-06T14:23:06Z")
Question about your K2K product. When setting up topic replication is it possible to use wildcards to grab a whole group of topics? For example if I have a bunch of topics that all start with the same prefix and I want… --- ## [Lenses KRaft support?](https://ask.lenses.io/t/lenses-kraft-support/409)
**Author:** [@superbrain\_bug](https://ask.lenses.io/u/superbrain_bug)\ **Replies:** 1\ **Last updated:** [July 29, 2025, 3:33pm UTC](https://ask.lenses.io/t/lenses-kraft-support/409 "2025-07-29T15:33:25Z")
We are curious whether Lenses platform supports latest Kafka Kraft mode? --- ## [Access Denied trying to connect Lenses Agent to MSK Serverless](https://ask.lenses.io/t/access-denied-trying-to-connect-lenses-agent-to-msk-serverless/401)
**Author:** [@james1985](https://ask.lenses.io/u/james1985)\ **Replies:** 1\ **Last updated:** [July 14, 2025, 8:47pm UTC](https://ask.lenses.io/t/access-denied-trying-to-connect-lenses-agent-to-msk-serverless/401 "2025-07-14T20:47:55Z")
I’m trying to get Lenses 6 Agent to connect to my MSK Serverless Kafka but I’m getting an Access Denied error. I’ve correctly set an IAM role against the EC2 instance. Testing even with the kafka-topics.sh, I’m getting… --- ## [Handle "File corrupted while reading record: null. Possible solution: use the recovery tool \[90030-199\]"](https://ask.lenses.io/t/handle-file-corrupted-while-reading-record-null-possible-solution-use-the-recovery-tool-90030-199/394)
**Author:** [@stheppi](https://ask.lenses.io/u/stheppi)\ **Replies:** 0\ **Last updated:** [July 1, 2025, 9:03am UTC](https://ask.lenses.io/t/handle-file-corrupted-while-reading-record-null-possible-solution-use-the-recovery-tool-90030-199/394 "2025-07-01T09:03:38Z")
This happens on Lenses 5.x and before when H2 database is used to store the Lenses state. To recover from this corruption follow these steps: bash into the machine running Lenses stop lenses supervisorctl stop lenses … --- ## [Lenses K2K - "Unrecognized SASL ClientCallback\]) occurred when evaluating SASL token received from the Kafka Broker"](https://ask.lenses.io/t/lenses-k2k-unrecognized-sasl-clientcallback-occurred-when-evaluating-sasl-token-received-from-the-kafka-broker/391)
**Author:** [@james1985](https://ask.lenses.io/u/james1985)\ **Replies:** 1\ **Last updated:** [June 25, 2025, 2:30pm UTC](https://ask.lenses.io/t/lenses-k2k-unrecognized-sasl-clientcallback-occurred-when-evaluating-sasl-token-received-from-the-kafka-broker/391 "2025-06-25T14:30:29Z")
Trying to get Lenses K2K replicator to work to replicate from one MSK Serverless instance to another. Via IAM authentication. Here’s my configuration: name: "gui-test-k2k" coordination: kafka: commit: group… --- ## [Simple python example to do a Lenses SQL query via API with Lenses 6](https://ask.lenses.io/t/simple-python-example-to-do-a-lenses-sql-query-via-api-with-lenses-6/378)
**Author:** [@james1985](https://ask.lenses.io/u/james1985)\ **Replies:** 1\ **Last updated:** [May 25, 2025, 6:23pm UTC](https://ask.lenses.io/t/simple-python-example-to-do-a-lenses-sql-query-via-api-with-lenses-6/378 "2025-05-25T18:23:55Z")
I’m using Lenses Community Edition. Can someone give me a basic python script that runs an SQL query to fetch some data using the new API in Lenses 6.0 --- ## [Is there a Lenses Community Edition Helm chart I can use on my minikube?](https://ask.lenses.io/t/is-there-a-lenses-community-edition-helm-chart-i-can-use-on-my-minikube/370)
**Author:** [@guillaume.ayme](https://ask.lenses.io/u/guillaume.ayme)\ **Replies:** 1\ **Last updated:** [May 13, 2025, 12:44pm UTC](https://ask.lenses.io/t/is-there-a-lenses-community-edition-helm-chart-i-can-use-on-my-minikube/370 "2025-05-13T12:44:08Z")
I want to setup Lenses Community Edition on my local kubernetes instance rather than Docker Compose. Does anyone have a Helm chart I can use? --- ## [SAML - Lenses agent provisioning failed - trusted certificate entries are not password-protected](https://ask.lenses.io/t/saml-lenses-agent-provisioning-failed-trusted-certificate-entries-are-not-password-protected/366)
**Author:** [@Andrew\_Stevenson](https://ask.lenses.io/u/Andrew_Stevenson)\ **Replies:** 1\ **Last updated:** [May 9, 2025, 8:35am UTC](https://ask.lenses.io/t/saml-lenses-agent-provisioning-failed-trusted-certificate-entries-are-not-password-protected/366 "2025-05-09T08:35:54Z")
WARN \[i.l.h.r.p.s.ConnectionsFSProvisioningScanner\] \[ioapp-compute-7\] Error updating connections configuration: - /mnt/provision-secrets/provisioning.yaml: Attempt to decode value on failed cursor: DownField(version),Do… --- ## [Curl command to list all topics in Lenses 6.0](https://ask.lenses.io/t/curl-command-to-list-all-topics-in-lenses-6-0/355)
**Author:** [@james1985](https://ask.lenses.io/u/james1985)\ **Replies:** 1\ **Last updated:** [April 14, 2025, 9:53am UTC](https://ask.lenses.io/t/curl-command-to-list-all-topics-in-lenses-6-0/355 "2025-04-14T09:53:02Z")
What’s the curl command to list all the topics for connected Kafka clusters in Lenses 6.0? --- ## [Setting up multiple Lenses 6 Agent environments](https://ask.lenses.io/t/setting-up-multiple-lenses-6-agent-environments/340)
**Author:** [@socrates\_hlapolosa](https://ask.lenses.io/u/socrates_hlapolosa)\ **Replies:** 2\ **Last updated:** [March 20, 2025, 8:31pm UTC](https://ask.lenses.io/t/setting-up-multiple-lenses-6-agent-environments/340 "2025-03-20T20:31:40Z")
Morning all, i would like to separate my clusters into olap and oltp as a result need two separate agents in my config, preferebly a single hq. please help me with the config below. i have questions: is this the correc… --- ## [LDAP user exists, with groups, but can't login](https://ask.lenses.io/t/ldap-user-exists-with-groups-but-cant-login/327)
**Author:** [@Marios](https://ask.lenses.io/u/Marios)\ **Replies:** 1\ **Last updated:** [January 31, 2025, 1:08pm UTC](https://ask.lenses.io/t/ldap-user-exists-with-groups-but-cant-login/327 "2025-01-31T13:08:37Z")
Hello, I have created an LDAP user and assigned them groups manually. Yet the user cannot login. Can you help? Here is a screenshot of the user in Lenses: [Next page](https://ask.lenses.io/c/lenses/6.md?page=1)