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OHS
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OTD
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OHS is
primarily an Apache based web server and can do forward and reverse
proxy functionality
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OTD is
primarily a high performant HTTP and TCP software load balancer, designed for
scalability and high throughput
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a Web Server is
required to serve static content and also to do proxy capability, then OHS is
a better choice.
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If full
fledged software load balancer with request throttling, draining, Quality of
Service, is required then OTD is probably a better choice
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OHS can be used to deploy some static content.
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OTD does not
expose the ability to serve static contents.
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OHS is used when high throughputs are not required.
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Used when looking
for better monitoring / troubleshooting / tuning for high throughput
deployment requirements
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Used when it is fine to restart the web servers occasionally for
configuration changes.
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No Downtime required for applications as backend servers can be
added/removed dynamically.
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HTTP responses from the backend servers can be cached. OTD provides a
built-in mechanism for caching .
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Download the OTD software and install it on a server by running runInstaller command from <Binaries>/Disk1. Preferred is to configure the OTD as root user because when the administration server is configured as root, then Oracle Traffic Director starts the keepalived daemon automatically when you start instances that are part of a failover group, and stops the daemon when you stop the instances. Set Oracle_Home as the new Installed OTD Home. Run below command to configure the Admin server: <OTD_HOME>/otd/bin/tadm configure-server --port=8989 --user=admin --server-user=root --instance- home= <OTD_HOME> /otd/instance_name/otd_instance1 This command will ask for admin password and will create the admin server. Run Below command to start the admin server: <OTD_HOME> /otd/instance_name/otd_instance1/admin-server/bin/startserv Login to the OTD console on http://<host>:8989 as admin user. Click New configuration: Click Next and create ne...
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