Managing system resources

You can use the System Status page in the System Status task to view a list of the systems that are defined to z/OSMF, to add new systems to be monitored, and to manage existing system definitions.

With the System Status task, you can define the following types of resources:

z/OS® sysplexes: z/OSMF can retrieve performance data for the z/OS sysplexes in your installation that have an active RMF Distributed Data Server (DDS). The DDS is a single data server on one system in the z/OS sysplex that gathers data from the RMF Monitor III distributed on each system in the sysplex. Thus, when z/OSMF connects to the active DDS in a sysplex, it obtains data for all of the images in the z/OS sysplex that have an active and synchronized RMF Monitor III data gatherer.
AIX® system complexes (IBM®Power Systems), Windows system complexes (System x), and Linux® system complexes (z Systems® and System x): z/OSMF can retrieve performance data from an RMF Cross Platform Distributed Data Server on a z/OS system that uses CIM servers to gather data from AIX system complexes, Linux system complexes, or Windows system complexes.

The resources defined to z/OSMF are listed in the Resources table. The table can contain a maximum of 100 resource entries, which can only be viewed or modified by you. For a description of the columns and actions in the table, see Columns in the Resources table or Actions for resource entries.

By default, z/OSMF supplies the LOCALPLEX resource entry and specifies an asterisk (*) for its host name. z/OSMF uses this resource entry to detect and connect to the DDS that is running in the z/OSMF host sysplex.

The Resources table refreshes automatically every 60 seconds. To refresh it manually, click Refresh.

Columns in the Resources table

Table 1. Columns in the Resources table
Column	Description
Resource	Name of the resource to be monitored.
System Type	Type of resource to be monitored. One of the following values is displayed: z/OS The resource describes a RMF DDS representing a z/OS sysplex. AIX The resource describes a RMF XP DDS representing a cluster of AIX systems. Linux on System x The resource describes a RMF XP DDS representing a cluster of Linux systems on System x. Linux on z Systems The resource describes a RMF XP DDS representing a cluster of Linux systems on IBM z Systems® technology. Windows The resource describes a RMF XP DDS representing a cluster of Windows systems. For target system type specification, see help topic Add and Modify Entry pages.
Connectivity	Indicates whether z/OSMF is connected to the DDS (or the Linux data gatherer) in the specified sysplex, system complex, or image. The Connectivity column can have one of the following values: Connected. z/OSMF is connected and the data is available. Unauthorized. z/OSMF is connected; however, z/OSMF could not authenticate with the DDS (or the Linux data gatherer). Authentication with a user ID and password is currently not supported for the Linux data gatherer. To authenticate with a DDS (GPMSERVE or GPM4CIM), z/OSMF supports the creation and transmission of a PassTicket that uses the z/OSMF user ID. PassTickets are created on behalf of the /z/OSMF started task user ID; therefore, in the security management product for your installation (for example, RACF®), the z/OSMF started task user ID must be authorized to generate PassTickets. If z/OSMF cannot generate a PassTicket on behalf of the servant user ID or if it cannot authenticate with the DDS using your z/OSMF user ID, z/OSMF cannot retrieve any data for the sysplex. Contact your z/OSMF administrator or system programmer to verify that the PassTicket has been set up correctly. Also, verify that a user has been defined in the security management product for your installation that is authorized to access the DDS using your z/OSMF user ID and that the z/OSMF Server servant user ID is authorized to generate PassTickets. If your installation does not require the authentication feature of the DDS, it is recommended that you disable DDS authentication. Doing so allows the Resource Monitoring and System Status tasks to access the DDS on behalf of z/OSMF users without encountering authentication errors. For more information about configuring the DDS, see the help topic about system prerequisites for the Resource Monitoring and System Status tasks in IBM z/OS Management Facility Configuration Guide. Error. z/OSMF could not connect because an error occurred. Verify that the host name or IP address and port are specified correctly. Ensure that the DDS (or Linux data gatherer) is active. If the value specified for the host name or IP address is an asterisk, contact your z/OSMF administrator or system programmer to verify that the required DDS detection service is available and to verify that z/OSMF is configured correctly. To connect to the DDS, you can add a new entry for the host sysplex or modify the existing entry. In either case, explicitly specify the host name or IP address and port.
Performance Index Status	Indicates whether all or some of the service class periods are achieving, exceeding, or missing their goal. The status column can have one of the following values: PI <= 1 for all periods. The PI is less than or equal to one for all active service class periods; therefore, all of the active service class periods are achieving or exceeding their goals. PI > 1 for unimportant periods. The PI is greater than one for at least one service class period that has an importance level of three, four, or five; therefore, at least one unimportant service class period is not achieving its goal. PI > 1 for important periods. The PI is greater than one for at least one service class period that has an importance level of one or two; therefore, at least one important service class period is not achieving its goal. For more details, you can use the Performance Index and Execution Velocity dashboards provided in the Resource Monitoring task. Unknown. z/OSMF is connected to the DDS; however, z/OSMF cannot retrieve the PI status. Typically, this situation occurs when a WLM service policy is being activated or was recently activated. This column applies to z/OS sysplex entries only. A value is displayed only when z/OSMF can connect to the DDS in a sysplex and retrieve data. To view additional details about the sysplex performance index, click the status link or select View > Performance Index Details from the Actions menu. This capability is provided only if the event type and handler needed to process the request are available. For more details, see your z/OSMF administrator.
Related Service Definition	Name of the WLM service definition that contains the active service policy. This column applies to z/OS sysplex entries only. A value is displayed only when z/OSMF can connect to the DDS in a sysplex and retrieve data. To view the active WLM service definition, click the name link or select View > Active WLM Service Definition from the Actions menu. This capability is provided only if the event type and handler needed to process the request are available. For more details, see your z/OSMF administrator.
Active WLM Policy	Name of the service policy that WLM is using to manage the workload. This column applies to z/OS sysplex entries only. A value is displayed only when z/OSMF can connect to the DDS in a sysplex and retrieve data. To view the active WLM service policy, click the name link or select View > Active WLM Policy from the Actions menu. This capability is provided only if the event type and handler needed to process the request are available. For more details, see your z/OSMF administrator.
Activity	Indicates the latest activity. Being Modified indicates that the system resource is being modified and is locked by another user.

Actions for resource entries

The actions are described in the following tables:

Targeted actions. Actions that apply to the selected resource entry. To use a targeted action, you must select a resource entry.
General actions. Actions that apply to resource entries. No selection is required.
Table actions. Lists actions that apply to the entire table. No selection is required.

Table 2. Targeted actions
Action	Description
Modify Entry	Modify and view the properties of the selected resource entry.
Remove Entry	Remove the selected resource entry from the Resources table. Doing so also removes the resource from the possible resources that can be monitored in the Resource Monitoring task.
View	View the following information about the selected z/OS sysplex: Performance Index Details: View detailed performance information for the corresponding sysplex. This option is available only if the selected resource is a z/OS sysplex. Active WLM Service Definition: View the WLM service definition that contains the active service policy. This option is available only for the local sysplex. Active WLM Policy: View the service policy that WLM is using to manage the workload in the sysplex. This option is available only for the local sysplex. WLM Status: View the status of WLM for the selected sysplex. This option is available only for the local sysplex. These actions are enabled only if the event type and handler needed to process the request are available. For more details, see your z/OSMF administrator.

Table 3. General actions
Action	Description
Add Entry	Add a new resource entry. Use this action to define the resources to be monitored by the Resource Monitoring task.

Table 4. Table actions
Action	Description
Select All	Select all of the rows in the table.
Deselect All	Deselect all of the selected rows in the table.
Configure Columns	Select the columns to display in the table, specify the order of those columns, and designate which columns should be fixed in position when the table is scrolled horizontally.
Hide Filter Row	Remove the filter row from view. This action is listed only when the filter row is displayed in the table.
Show Filter Row	Display the filter row. This action is listed only when the filter row is not displayed in the table.
Clear Sorts	Clear the sort from all of the columns in the table. This action is disabled if no sorting is specified in the table.