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Troubleshooting
Resolve problems with Teracloud® Streams using the troubleshooting tools provided with the product as well as the resources offered by Teracloud Support.
Known problems and solutions
Use the solutions that are provided to resolve known problems that you might encounter when you work with different components of the product.
Teracloud® Streams problems and solutions
Use the solutions that are provided to resolve the problems that you can encounter when you work with Teracloud® Streams.
Authentication
Use the solutions that are provided to resolve problems with Teracloud® Streams authentication.
User authentication errors with the PAM login counter module
If you are using Pluggable Authentication Module (PAM) to authenticate users in Teracloud® Streams and you install the login counter (tallying) module, there might be authentication problems.

Welcome
Learn about the core capabilities of Teracloud® Streams, its architecture, and key concepts.
Installing
Use this information to install, upgrade, and uninstall the Teracloud® Streams product.
Configuring
Create a basic or an enterprise domain which is a single point for configuring and managing common resources, security, and instances.
Administering
Administer the product by using the Teracloud® Streams graphical user interface, APIs, or the streamtool command-line interface.
Developing
Develop stream applications with the Streams Processing Language (SPL), Java, and Python.
Troubleshooting
Resolve problems with Teracloud® Streams using the troubleshooting tools provided with the product as well as the resources offered by Teracloud Support.
- Before contacting Teracloud® Support
  Review this information before you contact Teracloud® Support. These resources might help you to find possible solutions for your issue, or make your support experience more efficient if you need to contact Teracloud Support.
- Troubleshooting techniques
  Troubleshooting is a systematic approach to solving a problem. The goal of troubleshooting is to determine why something does not work as you expect it to work, and then decide how to resolve the problem.
- Known problems and solutions
  Use the solutions that are provided to resolve known problems that you might encounter when you work with different components of the product.
  - Teracloud® Streams problems and solutions
    Use the solutions that are provided to resolve the problems that you can encounter when you work with Teracloud® Streams.
    - Authentication
      Use the solutions that are provided to resolve problems with Teracloud® Streams authentication.
      - Unable to log in to an Teracloud® Streams domain
        You are not able to log in to the domain because of an authentication failure.
      - User authentication errors with the PAM login counter module
        If you are using Pluggable Authentication Module (PAM) to authenticate users in Teracloud® Streams and you install the login counter (tallying) module, there might be authentication problems.
      - Client certificate authentication problems and solutions
        If you are using X.509 certificates to authenticate users in an Teracloud® Streams domain, use these tips when troubleshooting certificate authentication problems.
    - Connectivity
      Use the solutions that are provided to resolve connectivity problems with the product.
    - Domain configuration and administration
      Use the solutions that are provided to resolve the problems that can occur when you work with Teracloud® Streams domains.
    - Installation
      Use the solutions that are provided to resolve the problems that you can encounter when you install Teracloud® Streams.
    - Instance configuration and administration
      Use the solutions that are provided to resolve the problems that can occur when you work with Teracloud® Streams instances.
    - Streams Console
      Use the solutions that are provided to resolve the problems that you might encounter when you work with Streams Console.
    - Stream applications
      Use these solutions to resolve the problems that you might encounter when you develop stream applications.
    - Teracloud® Streams runtime
      Use the solutions that are provided to resolve the problems encountered during the Teracloud® Streams runtime processes.
  - Toolkit problems and solutions
    Use the solutions that are provided to resolve the problems that you can encounter when you work with toolkits in Teracloud® Streams.
  - ZooKeeper problems and solutions
    Use these solutions to resolve the problems that you might encounter with Apache ZooKeeper.
- Troubleshooting services and diagnostic tools
  Teracloud® Streams provides log and trace services and troubleshooting tools that can help you resolve the issues that you encounter when you work with the product.
- Teracloud® Streams messages
  The Teracloud® Streams messages describe the errors and solutions, warnings of potentially problematic conditions, and helpful information that you can use to troubleshoot the problems that can occur when you work with the product. These messages are displayed in the user interfaces and log files.
Reference
Find details on the SPL language, toolkits, APIs, commands, and more.
Glossary
Use this glossary to find terms and definitions for Teracloud® Streams.

User authentication errors with the PAM login counter module

If you are using Pluggable Authentication Module (PAM) to authenticate users in Teracloud® Streams and you install the login counter (tallying) module, there might be authentication problems.

When you try to log in with a valid user ID and password, the following message is displayed:

CDISR2503E The specified user name or the specified password is not valid.

This error can occur when you log in to the Streams Console. If you did not generate authentication keys, this error can also occur when you run streamtool commands that require authentication.

This problem occurs when the pam_tally module is used as part of the PAM authentication. Any Teracloud® Streams interfaces that use PAM for password authentication are affected.

Use the pam_tally2 module instead of the pam_tally module.