28 WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile
Figure 1-12 Multiple stand-alone servers managed with the administrative agent
1.8 Advanced management of distributed and stand-alone
servers
The job manager can be used to administer multiple distributed environments and
stand-alone servers. The job manager administers the environment asynchronously using the
concept of jobs. Because jobs are submitted asynchronously, a low-latency network is
sufficient, which can be useful when the environment is distributed over distant geographical
areas.
The job manager is available only with the Websphere Application Server Network
Deployment offering and with WebSphere Application Server for z/OS.
The job manager administers the registered environments by submitting jobs that perform
tasks, for example:
Start and stop servers
Create and delete servers
Install and uninstall applications
Start and stop applications
System
Cell01
Node01
Cell02
Node02
Cell03
Node03
Admin Agent
Web Container
Admin
Application
Admin Agent
Repository
server1
server2
server1
server2
Admin Service
Repository
EAR
Repository
EAR
C:\> wsadmin
Chapter 1. System management: Technical overview 29
Run wsadmin scripts
Distribute files
To administer a distributed environment, the deployment manager is registered with the job
manager. To administer stand-alone servers, the nodes managed by the administrative agent
are registered with the job manager.
Figure 1-13 shows the relationship between the job manager and the environments with
which it can interact.
Figure 1-13 Flexible management
The job manager has a repository for its own configuration files, which are related to security,
administration of the job manager, configurations, and so on. However, unlike a deployment
manager, the job manager does not maintain a master repository. Instead, it allows the
administrative agents and deployment managers to continue managing their environments as
they if they were not registered with the job manager. The job manager can administer
multiple administrative agents and deployment managers, and each administrative agent and
deployment manager can be registered with multiple job managers.
Figure 1-14 on page 30 shows how the job manager provides a control point for
administration in a flexible environment.
Administrative
Agent
WebSphere
Application
Server
Administrative
Agent
Administrative
Agent
Servers
Deployment
Manager
Servers
Deployment
Manager
Base Application Server
• Programming model
• QoS
• Security
• Administration
Network Deployment Cell
• Administration
• Clustering
Job Manager
• Control multiple endpoints
• Remote management
• Loose coupling
30 WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile
Figure 1-14 A Job manager administration environment
dmgrCell
dmgrNode
System
deafaultCell01
NodeC
defaultCell02
adminNode
Admin Agent
defaultCell
jobmgrNode
Job Manager
Admin
Service
Admin
Application
Job
Manager
Repository
Repository
Repository
Deployment Manager
Admin
Services
Web Container
Admin
Application
Master
server1 server2
C:\> wsadmin
Web Container
Admin
Application
NodeA
server1 server2
Repository
EAR
EAR
C:\> wsadmin
C:\> wsadmin
NodeA
server1 server2
Repository
EAR
Node Agent
Admin
Services
Node Agent
Admin
Services
Admin
Services
Get WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
