Home
Configuring
Create a basic or an enterprise domain which is a single point for configuring and managing common resources, security, and instances.
Configuring transport mechanisms
Teracloud® Streams supports several high-performance and configurable transport mechanisms for communicating across processing elements (PEs). You can configure the transport mechanism by updating Teracloud Streams properties.
Application network properties for domains and instances
Use the domain.applicationNetwork and instance.applicationNetwork properties to specify the subnetworks that are used by the Teracloud® Streams data transport mechanism for instance jobs and PEs.

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.
- Setting up a basic domain on a single resource
  A basic domain has a single Teracloud® Streams resource and user. This type of domain is typically used for test or development environments.
- Setting up an enterprise domain on multiple resources
  An enterprise domain can have multiple resources and users. This type of domain is typically used for production environments. You can configure high availability to ensure that Teracloud® Streams can continue to run even if resources fail or are not available.
- Configuring security
  Each Teracloud® Streams domain and instance maintains its own security configuration.
- Configuring audit logging
  Teracloud® Streams supports comprehensive, multiple-level auditing of product and user operations. By default, audit logging is not enabled.
- Configuring transport mechanisms
  Teracloud® Streams supports several high-performance and configurable transport mechanisms for communicating across processing elements (PEs). You can configure the transport mechanism by updating Teracloud Streams properties.
  - Application network properties for domains and instances
    Use the domain.applicationNetwork and instance.applicationNetwork properties to specify the subnetworks that are used by the Teracloud® Streams data transport mechanism for instance jobs and PEs.
  - Encrypted PE connections properties for domains and instances
    Use the domain.transportSecurityType and instance.transportSecurityType properties to enable or disable encrypted connections between processing elements (PEs). By default, connections between PEs are encrypted.
- Configuring a checkpoint data store
  Use this procedure to configure a checkpoint data store for Teracloud® Streams domains 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.
Reference
Find details on the SPL language, toolkits, APIs, commands, and more.
Glossary
Use this glossary to find terms and definitions for Teracloud® Streams.

Application network properties for Teracloud® Streams domains and instances

Use the domain.applicationNetwork and instance.applicationNetwork properties to specify the subnetworks that are used by the Teracloud® Streams data transport mechanism for instance jobs and PEs.

By default, Teracloud® Streams uses the IP address that is configured in the Domain Name System (DNS) or in the /etc/hosts file.

To specify the domain.applicationNetwork or instance.applicationNetwork property value, use Classless Inter-Domain Routing (CIDR) notation, which includes the combination of both an IP address and a mask bit value in the following format:

IP-address/mask-bit-value

In the following example, the IP address is 192.0.2.0 and the mask bit value is 24, which converts to a subnet mask of 255.255.255.0:

instance.applicationNetwork=192.0.2.0/24

To specify multiple CIDR values, separate the values with a comma as show in the following example:

instance.applicationNetwork=192.0.2.0/24,198.51.100.0/24

For jobs and PEs, Teracloud® Streams checks the CIDR values in the order specified, and uses the first match that is found for the connection. If no match is found, Teracloud® Streams uses the IP address that is configured in the DNS or in the /etc/hosts file.

For system services, Teracloud® Streams checks the CIDR values in the order specified, and attempts to select an alternate interface with a subnetwork that is not in the subnetworks that are specified by the application network properties.

Domain services use the domain.applicationNetwork property.
Instance services use the instance.applicationNetwork property.

If an alternate interface cannot be found, Teracloud® Streams uses the IP address that is configured in the DNS or in the /etc/hosts file.

To display or set property values for domains and instances, use the following streamtool commands:

For the domain.applicationNetwork property, use the streamtool getdomainproperty command to display the property value and the streamtool setdomainproperty command to update the value.
For the instance.applicationNetwork property, use the streamtool getproperty command to display the property value and the streamtool setproperty command to update the value.