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  1. Support
  2. Common errors
  • Installation
    • Azure
      • Base64 Encoded Keytab
      • Create Keytab: Azure HDInsight ESP Kafka
      • HDInsight ESP: Lenses Deployment Failed
    • Helm
      • Additional configuration options in Helm
      • Kubernetes Secrets for Lenses configuration values
      • Run Lenses with additional mounted volumes
      • Run Lenses with additional plugins in kubernetes
      • Ingress with ALB Ingress Controller
      • Use Role/RoleBinging to deploy Lenses processors
    • Support for Kafka connections and operations
      • Automate Kafka topic creation
      • Kafka Quotas and per tenant cost center charging
      • Kafka Strimzi SASL_SSL with SCRAM-SHA-512.authMech
    • How to backup the internal H2 database
    • AWS EC2 - Spin Lenses Instance
    • Lenses Setup Wizard
    • Rotating Kubernetes credentials
    • Configure Lenses to load info from Connector
    • Secure JMX with Basic Auth
    • Secure JMX with TLS Encryption
    • Default thread pools
    • Creating Kerberos principal
    • Enable JMX on Apache Kafka
    • JNI libs and code execution
    • Open File Descriptors
    • Testing TLS certificates
    • User/Groups with Kerberos
  • Streaming SQL
    • Regex within Lenses.io
    • Time window aggregation over streaming data
  • Snapshot SQL
    • Query performance on Apache Kafka with SQL
    • Publish Data to an Apache Kafka topic
    • Can't see data
  • Connectors
    • Kafka Connect Logging
    • Hive Connector - Kerberos/Jaas & UserPassword
    • Secret provider on Confluent images
    • MQTT Connector with TLS Termination
    • Self Signed Certs for MQTT Connector with TLS
    • Escape special characters in KCQL
    • JDBC Confluent Connector - Microsoft SQL Server
  • Troubleshooting
    • How to reset license after it has expired
    • Cannot delete schema from Lenses UI
    • JMX metrics missing from Lenses UI
    • Webhook message/payload is not received
    • Lenses support portal - connection refused
  • Common errors
    • Liquibase exception lock
    • Unable to login
    • Change admin password
    • Connection failed
    • Connection time out
  • Installation
    • Azure
      • Base64 Encoded Keytab
      • Create Keytab: Azure HDInsight ESP Kafka
      • HDInsight ESP: Lenses Deployment Failed
    • Helm
      • Additional configuration options in Helm
      • Kubernetes Secrets for Lenses configuration values
      • Run Lenses with additional mounted volumes
      • Run Lenses with additional plugins in kubernetes
      • Ingress with ALB Ingress Controller
      • Use Role/RoleBinging to deploy Lenses processors
    • Support for Kafka connections and operations
      • Automate Kafka topic creation
      • Kafka Quotas and per tenant cost center charging
      • Kafka Strimzi SASL_SSL with SCRAM-SHA-512.authMech
    • How to backup the internal H2 database
    • AWS EC2 - Spin Lenses Instance
    • Lenses Setup Wizard
    • Rotating Kubernetes credentials
    • Configure Lenses to load info from Connector
    • Secure JMX with Basic Auth
    • Secure JMX with TLS Encryption
    • Default thread pools
    • Creating Kerberos principal
    • Enable JMX on Apache Kafka
    • JNI libs and code execution
    • Open File Descriptors
    • Testing TLS certificates
    • User/Groups with Kerberos
  • Streaming SQL
    • Regex within Lenses.io
    • Time window aggregation over streaming data
  • Snapshot SQL
    • Query performance on Apache Kafka with SQL
    • Publish Data to an Apache Kafka topic
    • Can't see data
  • Connectors
    • Kafka Connect Logging
    • Hive Connector - Kerberos/Jaas & UserPassword
    • Secret provider on Confluent images
    • MQTT Connector with TLS Termination
    • Self Signed Certs for MQTT Connector with TLS
    • Escape special characters in KCQL
    • JDBC Confluent Connector - Microsoft SQL Server
  • Troubleshooting
    • How to reset license after it has expired
    • Cannot delete schema from Lenses UI
    • JMX metrics missing from Lenses UI
    • Webhook message/payload is not received
    • Lenses support portal - connection refused
  • Common errors
    • Liquibase exception lock
    • Unable to login
    • Change admin password
    • Connection failed
    • Connection time out
  1. Support
  2. Common errors

Common errors


Liquibase exception lock

How to overcome liquibase.exception.lock that prevents lenses from starting

Unable to login

How to login if returned to login screen without an error. A common issue that might occur after software upgrade due to browser caching

Change admin password

How to change the default admin password once you install and setup Lenses.io for the very first time

Connection failed

What to do when you see a connection failure message when using Lenses.io. Make sure websocket connections are forwarded

Connection time out

What to do when you see a 'Connection timed-out' message while using Lenses.io. Review that any proxy is forwarding connections

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