This guide provides an overview of Oracle Traffic Director, and describes how to create, administer, monitor, and troubleshoot Oracle Traffic Director instances.
This guide is intended for users who are responsible for installing, configuring, administering, monitoring, and troubleshooting web-tier components such as web servers, reverse proxy servers, and load balancers.
It is assumed that readers of this guide are familiar with the following:
Using web browsers
Working in a terminal window
Executing operating system commands on UNIX-like platforms
In addition, a basic understanding HTTP and SSL/TSL protocols is desirable, though not mandatory.
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This preface introduces the new and changed features of Oracle Traffic Director and other significant changes that are described in this guide, and provides pointers to additional information:
Weblogic Management Framework
Oracle Traffic Director now supports database-based installation, or Restricted JRF-based installation. See Prerequisites for installing Oracle Traffic Director. Oracle Traffic Director introduces the WebLogic Management Framework, a set of tools that leverage Oracle WebLogic interfaces to provide a simple, consistent and distributed framework for managing Oracle. See What is the Weblogic Management Framework.
WebLogic Scripting Tool Commands
Oracle Traffic Director now supports a command line interface, Weblogic Scripting Tool (WLST). WLST commands are used to configure and administer Oracle Traffic Director.
Oracle WebLogic Server provides a sharable infrastructure for multiple organizations. It allows one domain to support multiple tenants at a time, where a dedicated domain is not required.
Multi-tenancy provides resource isolation within a domain partition, an administrative and runtime partition of a WebLogic domain dedicated to running application instances and related resources for a tenant. In a typical deployment scenario, WebLogic Server is front-ended by Oracle Traffic Director. When partition tasks are performed from WebLogic Server, Oracle Traffic Director must be configured appropriately to successfully front- end the Web Logic Partition.With the Multi-tenancy support, Oracle Traffic Director is configured automatically without user action. See
Queueing with Request Limiting
The requests that overflow are queued and are de-queued as per request priority. The request and response bandwidth can be controlled by this feature.
Origin Server Traffic Control
The user can set limit on reusing same origin server connection for multiple requests by the keep-alive option. Bandwidth can be limited and controlled for each origin server. This feature can be used to control the HTTP origin server pools, but, not the TCP origin server pools.
Prioritized Backend Connection Management
Oracle Traffic Director supports the prioritized requests to the back end server, for critical application requests. With this feature, requests with higher priority are de-queued before the ones with lower priority.
Web Application Firewall support based on ModSecurity version 2.6.7 has been upgraded to 2.8.0 .
Oracle Traffic Director supports sending notifications to one or more user configured HTTP endpoints for the following two events:
Origin Server Status Change event
Request Limit Exceeded event
See Event Notifications.
High Availability Using Active-Active Failover Mode
Oracle Traffic Director provides support for failover between the instances by deploying two or more OTD instances on the nodes which are in the same subnet. One of the nodes is chosen as the active router node and the remaining node(s) are the backup router node(s).The traffic will be managed among all the OTD instances.
Status Listeners to check Oracle Traffic Director instances
Oracle Traffic Director supports configuring a dedicated status listener to check the health of an Oracle Traffic Director instance.
Support for Front-ending FTP Traffic
Oracle Traffic Director provides options to enable FTP support on a TCP proxy. You can enable client FTP and server FTP settings on a TCP proxy.
See Managing TCP Proxies.