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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.
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.
Diagnostic tools
Teracloud® Streams provides a set of diagnostic tools that can help you troubleshoot 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.
- 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.
  - Log and trace services
    The default log and trace service for Teracloud® Streams logs events and messages in rolling log files on each resource. Because the logs are distributed across the cluster, use the streamtool getlog command to collect the logs from each resource for easy examination.
  - Managing log and trace data
    Teracloud® Streams generates log and trace data that can help you to identify, diagnose, and resolve problems with the Teracloud Streams product and applications.
  - Diagnostic tools
    Teracloud® Streams provides a set of diagnostic tools that can help you troubleshoot problems.
- 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.

Diagnostic tools

Teracloud® Streams provides a set of diagnostic tools that can help you troubleshoot problems.

dependency_checker.sh: Use this script and its subcommand to diagnose system problems. The script identifies any incompatibilities that are related to your operating system and software settings, and identifies any missing software dependencies that are required to run Teracloud® Streams.
streamtool checkdomainhosts: Use this command to verify that resources in a domain satisfy the configuration and network connectivity requirements of the product.
streamtool checkinstancehosts: Use this command to verify that resources in an instance satisfy the configuration and network connectivity requirements of the product.