Resources

View
General Resource Properties
Detailed Resource Properties

Actions
Enabling a Resource
Disabling a Resource
Enabling the Resource Monitor
Disabling the Resource Monitor
Modifying Resource Properties
Modifying Load Balancing
Clearing a STOP_FAILED Flag
Creating a Resource
Deleting a Resource

Viewing General Resource Properties

You can display a general or detailed view of a resource's properties.

To display the general resource property view, complete the following steps:

  1. From the navigation frame in SunPlexTM Manager, choose Resource Groups>[resource group name]>[resource name].

  2. From the View menu, choose General Properties Table.
See the Resource Properties table for a complete description of each property.

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Viewing Detailed Resource Properties

To display the detailed resource property view, which displays additional system and extension properties, complete the following steps:
  1. From the navigation frame in SunPlex Manager, choose Resource Groups>[resource group name]>[resource name].

  2. From the View menu, choose Detailed Properties Table.
See the Resource Properties table for a complete description of each property.

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Enabling a Resource

To make the cluster aware of a resource, you need to enable the resource.
  1. From the Resource Group section in the navigation frame in SunPlex Manager, choose Resource Groups or [resource group name].

    The Resource Groups window appears.

  2. From the Action Menu, choose Enable Resource.

    A task window appears. This window prompts you to provide additional information.

  3. Choose the resource to enable.

  4. Click Enable Resource.

    SunPlex Manager displays a confirmation message, including the command that is used to complete the task. Write down or copy this command for future use in scripts and other automated tasks.

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Disabling a Resource

Disabling a resource takes the resource offline and eliminates the possibility that the resource will come online again as a result of a resource group failover.

You need to disable a resource when you perform maintenance on a node or disk that the resource uses.

  1. From the Resource Group section in the navigation frame in SunPlex Manager, choose Resource Groups or [resource group name].

    The Resource Groups window appears.

  2. From the Action Menu, choose Disable Resource.

    A task window appears. This window prompts you to provide additional information.

  3. Choose the resource to disable.

    If other resources depend on the resource, you cannot disable that resource.

  4. Click Disable Resource.

    SunPlex Manager displays a confirmation message, including the command that is used to complete the task. Write down or copy this command for future use in scripts and other automated tasks.

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Enabling the Resource Monitor

The resource monitor is enabled automatically when the resource is enabled. Therefore, you only need to enable the resource monitor after you have disabled it. Complete the following steps:
  1. From the Resource Group section in the navigation frame in SunPlex Manager, choose Resource Groups or [resource group name].

    The Resource Groups window appears.

  2. From the Action Menu, choose Enable Resource Monitor.

    A task window appears. This window prompts you to provide additional information.

  3. Choose the resource for which you want to enable the monitor.

  4. Click Enable Resource Monitor.

    SunPlex Manager displays a confirmation message, including the command that is used to complete the task. Write down or copy this command for future use in scripts and other automated tasks.

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Disabling the Resource Monitor

The resource monitor is stopped automatically when the resource is disabled. You might need to disable the resource monitor when you modify or troubleshoot the resource's configuration.

Warning If you disable the resource monitor, the resource is no longer be highly available. The resource does not failover if a failure occurs.

To disable a resource's monitor, complete the following steps:

  1. From the Resource Group section in the navigation frame in SunPlex Manager, choose Resource Groups or [resource group name].

    The Resource Groups window appears.

  2. From the Action Menu, choose Disable Resource Monitor.

    A task window appears. This window prompts you to provide additional information.

  3. Choose the resource for which you want to disable the monitor.

  4. Click Disable Resource.

    SunPlex Manager displays a confirmation message, including the command that is used to complete the task. Write down or copy this command for future use in scripts and other automated tasks.

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Modifying Resource Properties

You might need to modify resource properties to change the cluster's configuration. To determine whether you can modify a resource property, refer to the Resource Properties Table. In this table, the value Tunable indicates when you can modify the property.

To modify a resource's properties, complete the following steps:

  1. From the Resource Group section in the navigation frame in SunPlex Manager, choose Resource Groups or [resource group name].

    The Resource Groups window appears.

  2. From the Action Menu, choose Modify Resource Properties.

    A task window appears. This window prompts you to provide additional information.

  3. Choose the resource to modify.

  4. Click Next.

    SunPlex Manager displays an additional window that prompts you to provide resource properties. For a complete description of these properties, see the Resource Properties Table.

  5. Modify the appropriate property value by typing the new information in the provided field.

  6. Click Modify Resource.

    SunPlex Manager displays a confirmation message, including the command that is used to complete the task. Write down or copy this command for future use in scripts and other automated tasks.

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Modifying Load Balancing

To configure load balancing on a scalable service, you need to change resource weights.
  1. From the Resource Group section in the navigation frame in SunPlex Manager, choose Resource Groups or [resource group name]:

    The Resource Groups window appears.

  2. From the Action Menu, choose Modify Load Balancing.

    A task window appears. This window prompts you to provide additional information.

  3. Choose the resource to modify.

  4. Click Modify Load Balancing.

    A window appears. This window contains the current weights.

  5. Adjust load balancing.

    To adjust load balancing, enter a new number in the Weight field. When you change a node's weight, the Load Distribution field automatically updates with the new load distribution. This distribution is displayed as a percentage.

    Note: The Load Distribution fields only display values if you enable the JavaScriptTM technology in your web browser. If the JavaScript technology is disabled, the fields remain empty.

    An example is presented in the following table.

    Nodes That Run the Resource Weight by Node Load Distribution
    Node One 1 25%
    Node Two 1 25%
    Node Three 2 50%

    How to Determine Load Distribution
    To determine load distribution, divide the node's weight by the total weight for all nodes. The total weight for all nodes is determined by adding the weight of all nodes.

    In this example, Node One's weight is 1, and the total weight is 4. Therefore, Node One's load is 1/4 or 25 percent of the total load.

  6. Click Modify Load Balancing.

    SunPlex Manager displays a confirmation message, including the command that is used to complete the task. Write down or copy this command for future use in scripts and other automated tasks.

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Clearing a STOP_FAILED Flag

You need to clear the STOP_FAILED flag when the Take Group Offline task fails.

The STOP_FAILED resource state prevents you from unknowingly starting several instances of an application that the resource controls. Before you clear the STOP_FAILED flag, ensure that the resource is offline.

When a resource is in the STOP_FAILED state, you cannot perform the following tasks:

To clear a STOP_FAILED flag, complete the following steps:

Recommended Step Recommended step. Open a telnet window and connect to the node on which the resource failed. Then manually stop the resource application or applications.

This step might require you to kill processes, run resource type-specific commands, or use other commands.

  1. From the Resource Group section in the navigation frame in SunPlex Manager, choose Resource Groups or [resource group name].

    The Resource Groups window appears.

  2. From the Action Menu, choose Clear STOP_FAILED Flag.

    A task window appears. This window prompts you to provide additional information.

  3. Choose the resource that needs to have its STOP_FAILED flag cleared.

  4. Click Clear Flag.

    SunPlex Manager displays a confirmation message, including the command that is used to complete the task. The resource and resource group status are now offline.

Note: If you clear the STOP_FAILED flag, but do not manually stop the resource applications, the resource might not be properly stopped.

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Creating a Resource

You can create five kinds of resources:

To create a logical host name resource, complete the following steps

Warning To create a logical host name resource, either an adapter or an IPMP group must be configured for the same subnet as the new logical host name. If this configuration does not exist, you receive the following error message:

specified hostname(s) cannot be hosted by any adapter on ...

To configure the adapter and IPMP group on the new subnet, create an IPMP group.

  1. From the navigation frame in SunPlex Manager, choose Nodes>[node name]>IPMP Groups.

  2. From the Action Menu, choose Create Group.
  1. From the Resource Group section in the navigation frame in SunPlex Manager, choose Resource Groups or [resource group name].

    The Resource Groups window appears.

  2. From the Action Menu, choose Create New Resource.

    A task window appears. This window prompts you to provide additional information.

  3. Choose the resource type Logical Host Name Resource Type.

  4. Choose none for the associated network resource.

  5. Click Continue.

    SunPlex Manager displays an additional window that prompts you to provide resource properties.

  6. Type the resource property information for your configuration.

    See the Resource Properties table for a complete description of these properties.

    See the Sun Cluster 3.1 Data Service Installation and Configuration Guide for the specific resource group extension properties.

  7. Click Create Resource.

    SunPlex Manager displays a confirmation message, including the command that is used to complete the task. Write down or copy this command for future use in scripts and other automated tasks.

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To create a shared address resource, complete the following steps

Warning To create a shared address resource, either an adapter or an IPMP group must be configured for the same subnet as the new shared address. If this configuration does not exist, you receive the following error message:

specified hostname(s) cannot be hosted by any adapter on ...

To configure the adapter and IPMP group on the new subnet, create an IPMP group.

  1. From the navigation frame in SunPlex Manager, choose Nodes>[node name]>IPMP Groups.

  2. From the Action Menu, choose Create Group.
  1. From the Resource Group section in the navigation frame in SunPlex Manager, choose Resource Groups or [resource group name].

    The Resource Groups window appears.

  2. From the Action Menu, choose Create New Resource.

    A task window appears. This window prompts you to provide additional information.

  3. Choose the resource type HA Shared Address Resource Type.

  4. Choose none for the associated network resource.

  5. Click Continue.

    SunPlex Manager displays an additional window that prompts you to provide resource properties.

  6. Type the resource property information for your configuration.

    See the Resource Properties table for a complete description of these properties.

    See the Sun Cluster 3.1 Data Service Installation and Configuration Guide for the specific resource group extension properties.

  7. Click Create Resource.

    SunPlex Manager displays a confirmation message, including the command that is used to complete the task. Write down or copy this command for future use in scripts and other automated tasks.

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To create a failover data service, complete the following steps

  1. From the Resource Group section in the navigation frame in SunPlex Manager, choose Resource Groups or [resource group name].

    The Resource Groups window appears.

  2. From the Action Menu, choose Create New Resource.

    A task window appears. This window prompts you to provide additional information.

  3. Choose the service's resource type name.

  4. Choose a logical host name for the associated network resource.

    Logical host names are indicated by (lh).

  5. Click Continue.

    SunPlex Manager displays an additional window that prompts you to provide resource properties.

    Note: If the resource type is not registered, SunPlex Manager prompts you to register the resource type. Click Register.

  6. Enter the resource property information for your configuration.

    See the Resource Properties table for a complete description of these properties.

    See the Sun Cluster 3.1 Data Service Installation and Configuration Guide for the specific resource group extension properties.

  7. Click Create Resource.

    SunPlex Manager displays a confirmation message, including the command that is used to complete the task. Write down or copy this command for future use in scripts and other automated tasks.

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To create a scalable data service, complete the following steps

  1. From the Resource Group section in the navigation frame in SunPlex Manager, choose Resource Groups or [resource group name].

    The Resource Groups window appears.

  2. From the Action Menu, choose Create New Resource.

    A task window appears. This window prompts you to provide additional information.

  3. Choose the service's resource type name.

  4. Choose a shared address for the associated network resource.

    Shared addresses are indicated by (sa).

  5. Click Continue.

    SunPlex Manager displays an additional window that prompts you to provide resource properties.

  6. Type the resource property information for your configuration.

    See the Resource Properties table for a complete description of these properties.

    See the Sun Cluster 3.1 Data Service Installation and Configuration Guide for the specific resource group extension properties.

  7. Click Create Resource.

    SunPlex Manager displays a confirmation message, including the command that is used to complete the task. Write down or copy this command for future use in scripts and other automated tasks.

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To create a non-network aware resource, complete the following steps

  1. From the Resource Group section in the navigation frame in SunPlex Manager, choose Resource Groups or [resource group name].

    The Resource Groups window appears.

  2. From the Action Menu, choose Create New Resource.

    A task window appears. This window prompts you to provide additional information.

  3. Choose the resource's resource type name.

  4. Choose none for the associated network resource.

  5. Click Continue.

    SunPlex Manager displays an additional window that prompts you to provide resource properties.

  6. Type the resource property information for your configuration.

    See the Resource Properties table for a complete description of these properties.

    See the Sun Cluster 3.1 Data Service Installation and Configuration Guide for the specific resource group extension properties.

  7. Click Create Resource .

    SunPlex Manager displays a confirmation message, including the command that is used to complete the task. Write down or copy this command for future use in scripts and other automated tasks.

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Deleting a Resource

You might need to delete a resource when you change the configuration or function of the cluster.

SunPlex Manager disables the resource automatically before deleting that resource.

To delete a resource, complete the following steps:

  1. From the Resource Group section in the navigation frame in SunPlex Manager, choose Resource Groups or [resource group name].

    The Resource Groups window appears.

  2. From the Action Menu, choose Delete Resource.

    A task window appears. This window prompts you to provide additional information.

  3. Choose the resource to be deleted.

  4. Click Delete Resource.

    SunPlex Manager displays a confirmation message, including the command that is used to complete the task. Write down or copy this command for future use in scripts and other automated tasks.

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