WebLogic (12C)--Several basic concepts

Turn http://blog.csdn.net/hanxuemin12345/article/details/46287597

Directory (?) [-]

1. Domains domain
2. Servers Server
3. Machine Machines

some basic concepts of WebLogic: The concept of understanding WebLogic

domains (domain) :

1, Concept

--(1) the domain is the unit or boundary of management;

(2) A set of WebLogic server resources that are managed as a unit and associated with each other are called domains;

(3) Domain is a basic unit of WebLogic server management, including a management server and a managed portal.

(4) You need to create the Domain first when you create the server and use the server .

(5) each domain includes a confirm.xml file in the Config directory at the root of domain .

2, composed

--(1) made up of servers

(2) Server sub- Administration server and Managed Servers

(3) Administrationserver is responsible for domain Management, generally not responsible for the application

(4) Managed Server Deployment real-world applications

(5) Cluster

3, Summary:

Domain is a logical concept.

Domain is a set of Sever

One domain with only one Management Server

Servers (server) :

1, Category

--Servers (server) sub-administration server ( Management Server ) and Managed server ( managed Server)

2,Administration Server ( Management Server )

--is the central operating node that controls the configuration of the entire domain, the Management Server maintains the configuration of the domain domains as a whole and assigns the configuration to each managed server Managed server, and must have a administration server in each domain.

If the Admin server is hung, there is no impact on managedserver in domain, and if the cluster is configured, there is no impact on the load balancing and failover mechanisms. This is because these are profile-based (config) files and do not depend on instances with AdminServer. The admin server doesn't have to run all the time, and when we need to modify the configuration or deploy the app, we'll run the admin server.

3,managed Server ( managed server )

--is an instance of Weblogicserver, where he obtains configuration information from the admin server. You typically deploy your own services, components, or apps on managed server. Based on performance considerations, Managedserver maintains a read-only domain profile that synchronizes profile information from the admin server when the service starts, and AdminServer will push changes to managed if the configuration file changes. On the server.

4, Summary:

(1) Administration Server ( Management Server ):

--can control the entire domain (domains)

--Can store configuration information and log information

--access to the console from the Management Server

(2) Managed Server ( managed server ):

--can be any server except the Management Server

--Establish a connection with the Management Server to get configuration information

--Can parse the hosted application

(3) Sever is An instance of the JVM;

one Server: Runs on the machine, has its own memory space, and is multithreaded.

Machines (machine) :

The machine is a physical concept that represents a real machine running the WebLogic application server, including information such as its IP address. Multiple machines can be included in a domain.

Summary: Machine is a computer that hosts Weblogic servers, and can host multiple Weblogic server instances.

Summary: The above concepts are some of the basic concepts of Weblogic, understanding these concepts, help to understand the basic structure and principles of Weblogic.

WebLogic (12C)--Several basic concepts