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Administering
Administer the product by using the Teracloud® Streams graphical user interface, APIs, or the streamtool command-line interface.
Recovery
You can back up your Teracloud® Streams system files and directories and then restore them later if necessary. In general, you can recover from application and runtime failures without restoring Teracloud Streams from a backup.
Backing up your Teracloud® Streams environment
After you install Teracloud® Streams, use the information in this section to back up and restore your system. By saving a snapshot of your Teracloud Streams environment, you can restore your system to the same environment if the system crashes.
System data to back up
Back up the system files and directories for all your Teracloud® Streams environments.

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.
- Domains
  After you create a Teracloud® Streams domain, you can administer it by using the Streams Console graphical user interface and the streamtool command-line interface.
- Resources
  After you add resources to domains and instances, you can administer them by using the Streams Console or the streamtool command-line interface.
- Instances
  To create and manage instances, you can use the Streams Console or the streamtool command-line interface.
- Domain and instance services
  Before you can perform Teracloud® Streams tasks, Teracloud Streams domain and instance services need to be running on resources in the domain. Domain services are started by starting the domain and instance services are started by starting the instance.
- Jobs
  You can start and administer jobs by using Streams Console or the streamtool command-line interface.
- Recovery
  You can back up your Teracloud® Streams system files and directories and then restore them later if necessary. In general, you can recover from application and runtime failures without restoring Teracloud Streams from a backup.
  - Backing up your Teracloud® Streams environment
    After you install Teracloud® Streams, use the information in this section to back up and restore your system. By saving a snapshot of your Teracloud Streams environment, you can restore your system to the same environment if the system crashes.
    - System data to back up
      Back up the system files and directories for all your Teracloud® Streams environments.
  - Recovering from Teracloud® Streams domain and instance failures
    If your domain or instance is not functioning well because of failed hardware or software components, Teracloud® Streams can automatically fail over to standby management services to provide high availability.
- Streams Console
  You can use the Streams Console to monitor and manage the Teracloud® Streams instances and applications in your domain from any computer that has HTTP connectivity to the server that is running the web management service.
- Logs and traces
  Teracloud® Streams provides options that enable administrators, instance owners, and application developers to manage log and trace data.
- Managing and monitoring Teracloud® Streams using management APIs
  Teracloud® Streams provides two API sets to manage and monitor Streams services and jobs.
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.
Reference
Find details on the SPL language, toolkits, APIs, commands, and more.
Glossary
Use this glossary to find terms and definitions for Teracloud® Streams.

System data to back up

Back up the system files and directories for all your Teracloud® Streams environments.

Files and directories

The following table lists the files and directories that Teracloud® Streams users need to back up. Use the backup mechanism that is provided by your system administrator.

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Table 1. Teracloud® Streams files and directories to back up
Directory or file name	Required or optional
`home-directory`/.bashrc	Required if you added the `source product-installation-root-directory/7.2.0.0/bin/streamsprofile.sh` command to this file.
`home-directory`/.streams/var/conf/streams-conf.xml	Required if you are using embedded ZooKeeper. This file contains the embedded ZooKeeper bootstrap properties.
The embedded ZooKeeper data directory, which contains snapshots and transaction logs. The default directory is `home-directory`/.streams/var/embedded/datadir.	Required to restore the Teracloud® Streams embedded ZooKeeper data and transaction logs. This directory is specified by the streams.zookeeper.property.dataDir bootstrap property.
The embedded ZooKeeper data translation logs directory. The default directory is `home-directory`/.streams/var/embedded/datadir.	Required to restore the Teracloud® Streams embedded ZooKeeper data translation logs. This directory is specified by the streams.zookeeper.property.dataLogDir bootstrap property.
`home-directory`/.streams/key	Required for generated public and private keys.
The external ZooKeeper data.	Use the backup mechanism that is provided by Apache ZooKeeper.
`spl-samples-directory`	Required if you copied and modified the SPL samples from a Teracloud® Streams installation.
`other-user-files-and-directories`	Required if you want to restore other applications, samples, customized toolkits, and tools.
If you run the domain controller service as a system service, the following directories and symbolic links were created by the streamtool registerdomainhost command: /var/teracloud/streams /var/log/teracloud/streams /etc/teracloud/streams	Required if you run the domain controller service as a system service. You can either back up these files or re-register the domain controller service as a system service when you restore your system.