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node, node manager, admin server, and managed server

Jane Somerfield
Ranch Hand

Joined: Jul 20, 2002
Posts: 193
What is a node? Is it a machine or cpu?
Can I have more than one
managed servers on one node? what is node manager?
when was it introduced? What is the difference
between admin server and node manager?
Thanks.
[ May 25, 2003: Message edited by: Jane Somerfield ]
sameerleekha
Greenhorn

Joined: Jan 22, 2002
Posts: 26
Hi,
Node is neithere a CPU nor the machine. Its a Server Instance in the cluster (group of server instances providing the unified services as provided by the individual instances)


sameer
Jane Somerfield
Ranch Hand

Joined: Jul 20, 2002
Posts: 193
But I have seen one node manager handling
more than one managed servers on the same node.
Chris Mathews
Ranch Hand

Joined: Jul 18, 2001
Posts: 2712
Like Sameer said...
A node is a single instance of WebLogic Server. A single machine can have multiple instances of WebLogic (and therefore nodes) running currently.
A Node Manager is a Java program provided with WebLogic Server that enables you to start, shut down, restart, and monitor remote WebLogic Server instances. A Node Manager must be run on each physical machine running an instance of WebLogic Server that you would like to manage.
See this link: Managing Server Availability with Node Manager.
 
Don't get me started about those stupid light bulbs.
 
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