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Oracle® Enterprise Manager Ops Center User's Guide
11g Release 1 Update 3 (11.1.3.0.0)

Part Number E18415-04
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PDF · Mobi · ePub

7 OS Monitoring

Use Enterprise Manager Ops Center to manage and monitor your Windows, Oracle Solaris, and Linux operating systems because an OS is a managed asset. You can monitor the status, activity, and usage of the operating systems. An agent embedded with the OS asset monitors the following variables :

To monitor an OS, Enterprise Manager Ops Center compares the value of an OS attribute to a threshold value at regular intervals and reports a status.

Enterprise Manager Ops Center provides default thresholds in its OS monitoring profiles. You can adjust the thresholds to meet your data center guidelines and you can set different threshold for each operating system.

Historical data includes CPU, memory, I/O and power data. You can create reports and can graph the historical data for trend analysis and forecasting. See Reports for more information.

To see the default profile for OS Monitoring, see Monitoring Profiles. To change the threshold values for OS monitoring, see Editing A Monitoring Rule.

Monitoring an OS

Enterprise Manager Ops Center can monitor Oracle Solaris, Linux, and Microsoft Windows operating systems. For Windows systems, the attributes that are monitored are determined by what has been configured in the Windows Management Instrumentation (WMI) remote monitoring capabilities. You must configure the WMI on the Windows system to manage or monitor its OS.

To Monitor an OS

  1. Select an OS asset in the Navigation pane to see its current status. The Dashboard page in the center pane includes the Current Alert Status field.

  2. For a status of Warning or Critical, scroll down the Dashboard page to view the Status table. This table displays the five (5) most recent problems on the asset and the category and name of the threshold that has been exceeded.

  3. Click the Summary tab to see a table of all the OS monitoring variables and the status of each one.

  4. Click on the Monitoring tab to see a list of all the monitoring variables, both hardware and OS, the latest value of each one, and the values of their thresholds. These threshold values are set by applying a monitoring profile.

  5. Click on the Utilization tab to see the OS monitoring variables by category and in the context of time. The Summary view displays the version of the operating system and the following list of categories:

    • CPU Utilization

    • Memory Utilization

    • Swap Utilization

    • Network Bandwidth Utilization

    • File System Utilization

    • I/O Utilization

    • System Load

  6. Click one of the categories to see that category's monitoring variable's status and a chart of its value for the last 24 hours. You can change the duration of the chart to another time period.

  7. To export chart data, click the Charts tab and then select the category. The same chart as the one on the Utilization tab is displayed. Click the Export Chart Data button to choose options for creating a file.

  8. To compare the history of different monitoring variables, click the Charts tab.

    • Click the option to include all lines on a single chart.

    • Select two or more categories of monitoring variables.

    • If you prefer, change the time period.

Rebooting an OS

Use the following procedure to reboot the OS.

To Reboot an OS

  1. Select the OS from the Asset section of the Navigation pane.

  2. Click Reboot in the Actions pane.

  3. Confirm the reboot action.

Managing Boot Environments

The boot disk is the disk from which the Oracle Solaris OS kernal loads. You can partition the boot disk and copy an active OS environment to a fully bootable alternate OS disk or boot environment. You can update or perform routine maintenance on the alternate boot environment (ABE) while the active boot environment (BE) is running, or fall back to an alternate boot environment if there is a problem with the active boot environment. System administrators often create an alternate boot environment to test OS updates before deploying them to the active environment.

Use the Oracle Solaris Live Upgrade's Synchronize Boot Environments feature to create an alternate boot environment identical to the active boot environment, or use the lucreate command to create a custom alternate boot environment. Using Enterprise Manager Ops Center, you can use its Update Profiles or a custom profile to create an alternate boot environment.

All boot environments associated with an Oracle Solaris OS, including alternate boot environments, are displayed in the user interface. All boot environments are available for management, but you must make an ABE active to manage it. You can monitor only the active boot environment so to monitor an ABE, you must make it the active environment.

See About Oracle Solaris Live Upgrade for an overview of how Live Upgrade and alternate boot environments work in Enterprise Manager Ops Center . See for Additional Resources information about how to use the lucreate command.

Displaying Boot Environment Details

An alternate boot environment (ABE) appears as an attribute of the OS asset in the Asset pane. However, you cannot view the details of the alternate boot environment until you boot from it, making it the active or live boot environment. The following types of information is available for all boot environments:

  • Name and description

  • Status

    • Active or Live – Current boot environment

    • Inactive – An ABE that is available for activation

    • Invalid – An ABE that is not available for activation

  • File System location and description

  • Device size, mount location and options

  • Date and time that the ABE was last synchronized

You can activate an ABE or schedule when to activate it. You can synchronize (sync) the boot environments.

To Display Boot Environment Details

  1. Expand the Assets section of the navigation pane.

  2. Click an Oracle Solaris OS. The OS Details are displayed in the center pane. If the OS has an ABE, the center pane includes a Boot Environments tab.

  3. Click the Boot Environments tab to see all associated boot environments. The active boot environment is displayed at the top of the pane and shows the Active status. The alternate boot environments are displayed after the active boot environment. Shared files and directories appear in the Synch List.

  4. Click the icon next to the Status to display details, including a list of file systems, the type of file system, device size, and the mount details.

Synchronizing Boot Environments

Before you activate an ABE, you synchronize it with the live boot environment to capture any changes that have been made. For example, after you install applications on your active boot environment, the current ABE does not contain these applications. When you synchronize boot environments, you create a new alternate boot environment that is identical to the active boot environment.

To Synchronize Boot Environments

  1. Expand the Assets section of the navigation pane.

  2. Click an Oracle Solaris OS. The OS Details are displayed in the center pane, which includes a Boot Environments tab.

  3. Click the Boot Environments tab to see all associated boot environments. The active boot environment is displayed at the top of the pane and shows the Active status. The alternate boot environments are displayed after the active boot environment. Shared files and directories appear in the Synch List.

  4. Click Synchronize Boot Environment in the Actions pane. A new alternate boot environment is created.

Activating a Boot Environment

When you activate an alternate boot environment, the current boot environment becomes an alternate boot environment. Before you activate an ABE, synchronize it with the current boot environment.

To Activate a Boot Environment

  1. Expand the Assets section of the navigation pane.

  2. Click an Oracle Solaris OS. The OS Details are displayed in the center pane, which includes a Boot Environments tab.

  3. Click the Boot Environments tab to see all associated boot environments. The active boot environment is displayed at the top of the pane and shows the Active status. The alternate boot environments are displayed after the active boot environment. You can activate a boot environment that has an Inactive status.

  4. Click the alternate boot environment..

  5. Click Activate Boot Environment and Reboot in the Actions pane.