The Agent Controller is the portion of Oracle Enterprise Manager Ops Center that manages and monitors OS and virtualization assets.
Agent Controllers can be updated remotely. However, the Enterprise Controller and Proxy Controllers must be updated first.
Agent Controllers, or Agents, are installed on managed operating systems. They send asset data to Oracle Enterprise Manager Ops Center and enable Proxy Controllers to carry out jobs such as OS updating.
The Administration options for Agents let you manage them directly.
You can view the Agents currently known to Ops Center and see their version and status.
Updates for Oracle Enterprise Manager Ops Center are released periodically. You can apply these updates to your Agents to make use of new features and bug fixes.
When an update is released, you must download it and apply it to the Enterprise Controller and Proxy Controllers before applying it to the Agents.
Agent Controllers are installed on operating systems and virtualization tools managed by Oracle Enterprise Manager Ops Center. You can view them to see their status, their current version, and any available updates.
Click the Enterprise Controller in the Administration section of the Navigation pane.
Click the Agent Controllers tab. Agent Controller information is displayed.
You can remotely update Agent Controllers to the latest available version.
Agent files are stored in the /var/opt/sun/xvm/images/agent directory. If you are using disconnected mode, Agent Controller files must be added to the /var/opt/sun/xvm/images/agent directory before they can be used.
Click the Enterprise Controller in the Administration section of the Navigation pane.
Click the Agent Controllers tab. Agent Controller information is displayed.
Select one or more Agent Controllers.
Click the Update to Latest Available Version icon in the center pane. The Upgrade Agents wizard is displayed.
Select an option for providing upgrade credentials.
Upgrade without requiring ssh credentials
Re-use SSH credentials used during discovery for the selected hosts – Uses the saved discovery criteria.
Apply the same SSH credentials to all – Uses the same ssh credentials for all selected assets.
Enter SSH credentials for each of the selected hosts – Uses separately entered ssh credentials for all assets.
Click Submit. A job is launched to upgrade the Agent.
You can remotely revert Agent Controllers to a previously installed version.
To Downgrade Agent Controllers
Click the Enterprise Controller in the Administration section of the Navigation pane.
Click the Agent Controllers tab. Agent Controller information is displayed.
Select one or more Agent Controllers.
Click the Downgrade to Previously Installed Version icon in the center pane. The Downgrade Agents wizard is displayed.
Select an option for providing credentials.
Downgrade without requiring ssh credentials
Re-use SSH credentials used during discovery for the selected hosts – Uses the saved discovery criteria.
Apply the same SSH credentials to all – Uses the same ssh credentials for all selected assets.
Enter SSH credentials for each of the selected hosts – Uses separately entered ssh credentials for all assets.
Click Submit. A job is launched to downgrade the Agent.
You can re-install the Agent Controller on managed assets, removing the existing Agent and installing the latest version.
Agent files are stored in the /var/opt/sun/xvm/images/agent directory. If you are using disconnected mode, Agent Controller files must be added to the /var/opt/sun/xvm/images/agent directory before they can be used.
Click All Assets in the Assets section of the Navigation pane.
Select an operating system from the list of assets.
Click Re-install agentry in the Actions pane. The Enter Credentials page of the Manage Assets wizard is displayed.
Select an option for providing SSH credentials for the system:
Reuse the SSH credentials used to discover the asset
Enter one set of SSH credentials to use for all assets
Enter separate SSH credentials for each asset
Click Next. The Start Managing page is displayed.
Confirm your selection and click Next. The Summary page is displayed. An Agent installation job is launched.
Click Close.