Node Manager Overview In Weblogic
What Node Managers Can Do ?
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- You can use Node Managers to:
–Start, shut down, and restart an administration server
–Start, shut down, suspend, and restart managed servers
–Automatically restart the administration and managed servers on failure
–Monitor servers and collect log data
- Node Managers:
–Run on the same computers as the managed servers
–Can be run automatically in the background, as Windows services or UNIX daemons
–Are available as either Java-based or (for UNIX only) script-based processes.
Node Manager Architecture:
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How a Node Manager Starts an Administration Server ?
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How a Node Manager Starts a Managed Server ?
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How a Node Manager Restarts an Administration Server ?
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How a Node Manager Restarts a Managed Server ?
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How a Node Manager Shuts Down a Server Instance ?
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Versions of Node Managers:
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- There are two versions of Node Managers:
–Java-based Node Managers
–Script-based Node Managers
- Java-based Node Managers run within a Java Virtual Machine (JVM) process.
- Script-based Node Managers (used only for UNIX systems) do not have as much security, but provides the ability to remotely manage servers over a network using Secure Shell (SSH).
- Node Managers are required for:
–Whole server migration
–Some configurations of automatic server migration.