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Oracle Solaris Cluster System Administration Guide |
1. Introduction to Administering Oracle Solaris Cluster
2. Oracle Solaris Cluster and RBAC
3. Shutting Down and Booting a Cluster
4. Data Replication Approaches
5. Administering Global Devices, Disk-Path Monitoring, and Cluster File Systems
7. Administering Cluster Interconnects and Public Networks
10. Configuring Control of CPU Usage
How to Control CPU Usage in the Voting Node on a Global Cluster
How to Control CPU Usage in a Global-Cluster Non-Voting Node With the Default Processor Set
How to Control CPU Usage in a Global-Cluster Non-Voting Node With a Dedicated Processor Set
11. Patching Oracle Solaris Cluster Software and Firmware
12. Backing Up and Restoring a Cluster
13. Administering Oracle Solaris Cluster With the Graphical User Interfaces
This section includes the following procedures:
How to Control CPU Usage in the Voting Node on a Global Cluster
How to Control CPU Usage in a Global-Cluster Non-Voting Node With the Default Processor Set
How to Control CPU Usage in a Global-Cluster Non-Voting Node With a Dedicated Processor Set
Perform this procedure to assign CPU shares to a resource group that will be executed in a global–cluster voting node.
If a resource group is assigned CPU shares, Oracle Solaris Cluster software performs the following tasks when it starts a resource of the resource group in a global–cluster voting node:
Augments the number of CPU shares assigned to the voting node ( zone.cpu-shares) with the specified number of CPU shares, if this has not already been done.
Creates a project named SCSLM_resourcegroup_name in the voting node, if this has not already been done. This project is specific to the resource group, and is assigned the specified number of CPU shares (project.cpu-shares).
Starts the resource in the SCSLM_resourcegroup_name project.
For more information about configuring the CPU control facility, see the rg_properties(5) man page.
# dispadmin -d FSS
FSS becomes the default scheduler on next reboot. To make this configuration take effect immediately, use the priocntl command.
# priocntl -s -C FSS
Using the combination of the priocntl and dispadmin commands ensures that FSS becomes the default scheduler immediately and remains so after reboot. For more information about setting a scheduling class, see the dispadmin(1M) and priocntl(1) man pages.
Note - If the FSS is not the default scheduler, your CPU shares assignment will not take effect.
Setting these parameters helps protect processes running in the voting nodes from competing for CPUs with processes running in non-voting nodes. If you do not assign a value to the globalzoneshares and defaultpsetmin properties, these properties take their default values.
# clnode set [-p globalzoneshares=integer] \ [-p defaultpsetmin=integer] \ node
Sets the minimum number of CPU shares available in the default processor set. The default value is 1.
Sets the number of shares assigned to the voting node. The default value is 1.
Specifies nodes on which properties are to be set.
In setting these properties, you are setting properties for the voting node. If you do not set these properties, you cannot benefit from the RG_SLM_PSET_TYPE property in non-voting nodes.
# clnode show node
For the node you specify, the clnode command prints the properties set and the values that are set for these properties. If you do not set the CPU control properties with clnode, they take the default value.
# clresourcegroup create -p RG_SLM_TYPE=automated \ [-p RG_SLM_CPU_SHARES=value] resource_group_name
Enables you to control CPU usage and automates some steps to configure the Oracle Solaris OS for system resource management.
Specifies the number of CPU shares that are assigned to the resource group-specific project, project.cpu-shares and determines the number of CPU shares that are assigned to the voting node zone.cpu-shares.
Specifies the name of the resource group.
In this procedure, you do not set the RG_SLM_PSET_TYPE property. In the voting node, this property takes the value default.
This step creates a resource group. You could alternatively use the clresourcegroup set command to modify an existing resource group.
# clresourcegroup online -M resource_group_name
Specifies the name of the resource group.
Note - Do not remove or modify the SCSLM_resource_group_name project. You can add more resource control manually to the project, for example, by configuring the project.max-lwps property. For more information, see the projmod(1M) man page.
Perform this procedure if you want to assign CPU shares for resource groups in a global-cluster non-voting node, but do not need to create a dedicated processor set.
If a resource group is assigned CPU shares, Oracle Solaris Cluster software performs the following tasks when starting a resource of that resource group in a non-voting node:
Creates a pool named SCSLM_resource_group_name, if this has not already been done.
Associates the SCSLM_pool_zone_name pool to the default processor set.
Dynamically binds the non-voting node to the SCSLM_poolzone_name pool.
Augments the number of CPU shares assigned to the non-voting node (zone.cpu-shares) with the specified number of CPU shares, if this has not already been done.
Creates a project named SCSLM_resourcegroup_name in the non-voting node, if this has not already been done. This project is specific to the resource group, and is assigned the specified number of CPU shares (project.cpu-shares).
Starts the resource in the SCSLM_resourcegroup_name project.
For more information about configuring the CPU control facility, see the rg_properties(5) man page.
# dispadmin -d FSS
FSS becomes the default scheduler on next reboot. To make this configuration take effect immediately, use the priocntl command:
# priocntl -s -C FSS
Using the combination of the priocntl and dispadmin commands ensures that FSS becomes the default schedule immediately and remains so after reboot. For more information about setting a scheduling class, see the dispadmin(1M) and priocntl(1) man pages.
Note - If the FSS is not the default scheduler, your CPU shares assignment will not take effect.
Setting these parameters helps protect processes running in the voting node from competing for CPUs with processes running in global-cluster non-voting nodes. If you do not assign a value to the globalzoneshares and defaultpsetmin properties, these properties take their default values.
# clnode set [-p globalzoneshares=integer] \ [-p defaultpsetmin=integer] \ node
Sets the number of shares assigned to the voting node. The default value is 1.
Sets the minimum number of CPUs available in the default processor set. The default value is 1.
Identifies nodes on which properties are to be set.
In setting these properties, you are setting properties for the voting node.
# clnode show node
For the node you specify, the clnode command prints the properties set and the values that are set for these properties. If you do not set the CPU control properties with clnode, they take the default value.
# clresourcegroup create -p RG_SLM_TYPE=automated \ [-p RG_SLM_CPU_SHARES=value] resource_group_name
Enables you to control CPU usage and automates some steps to configure the Oracle Solaris OS for system resource management.
Specifies the number of CPU shares assigned to the resource group-specific project (project.cpu-shares) and determines the number of CPU shares assigned to the global-cluster non-voting node (zone.cpu_shares).
Specifies the name of the resource group.
This step creates a resource group. You could alternatively use the clresourcegroup set command to modify an existing resource group.
You cannot set RG_SLM_TYPE to automated in a non-voting node if a pool other than the default pool is in the zone configuration or if the zone is dynamically bound to a pool other than the default pool. See the zonecfg(1M) and poolbind(1M) man pages for information about zone configuration and pool binding respectively. View your zone configuration as follows:
# zonecfg -z zone_name info pool
Note - A resource such as an HAStoragePlus or a LogicalHostname resource was configured to start in a non-voting node but with the GLOBAL_ZONE property set to TRUE is started in the voting node. Even if you set the RG_SLM_TYPE property to automated, this resource does not benefit from the CPU shares configuration and is treated as in a resource group with RG_SLM_TYPE set to manual.
In this procedure, you do not set the RG_SLM_PSET_TYPE property. Oracle Solaris Cluster uses the default processor set.
# clresourcegroup online -M resource_group_name
Specifies the name of the resource group.
If you set RG_SLM_PSET_TYPE to default, Oracle Solaris Cluster creates a pool, SCSLM_pool_zone_name, but does not create a processor set. In this case, SCSLM_pool_zone_name is associated with the default processor set.
If online resource groups are no longer configured for CPU control in a non-voting node, the CPU share value for the non-voting node takes the value of zone.cpu-shares in the zone configuration. This parameter has a value of 1 by default. For more information about zone configuration, see the zonecfg(1M) man page.
Note - Do not remove or modify the SCSLM_resource_group_name project. You can add more resource control manually to the project, for example by configuring the project.max-lwps property. For more information, see the projmod(1M) man page.
Perform this procedure if you want your resource group to execute in a dedicated processor set.
If a resource group is configured to execute in a dedicated processor set, Oracle Solaris Cluster software performs the following tasks when it starts a resource of the resource group in a global-cluster non-voting node:
Creates a pool named SCSLM_pool_zone_name, if this has not already been done.
Creates a dedicated processor set. The size of the processor set is determined by using the RG_SLM_CPU_SHARES and RG_SLM_PSET_MIN properties.
Associates the SCSLM_pool_zone_name pool to the created processor set.
Dynamically binds the non-voting node to the SCSLM_pool_zone_name pool.
Augments the number of CPU shares assigned to the non-voting node with the specified number of CPU shares, if this has not already been done.
Creates a project named SCSLM_resourcegroup_name in the non-voting node, if this has not already been done. This project is specific to the resource group, and is assigned the specified number of CPU shares (project.cpu-shares).
Starts the resource in the SCSLM_resourcegroup_name project.
# dispadmin -d FSS
FSS becomes the default scheduler on next reboot. To make this configuration take effect immediately, use the priocntl command.
# priocntl -s -C FSS
Using the combination of the priocntl and dispadmin commands ensures that FSS becomes the default schedule immediately and remains so after reboot. For more information about setting a scheduling class, see the dispadmin(1M) and priocntl(1) man pages.
Note - If the FSS is not the default scheduler, your CPU shares assignment will not take effect.
Setting these parameters helps protect processes running in the voting node from competing for CPUs with processes running in non-voting nodes. If you do not assign a value to the globalzoneshares and defaultpsetmin properties, these properties take their default values.
# clnode set [-p globalzoneshares=integer] \ [-p defaultpsetmin=integer] \ node
Sets the minimum number of CPUs available in the default processor set. The default is 1.
Sets the number of shares assigned to the voting node. The default is 1.
Identifies nodes on which properties are to be set.
In setting these properties, you are setting properties for the voting node.
# clnode show node
For the node you specify, the clnode command prints the properties set and the values that are set for these properties. If you do not set the CPU control properties with clnode, they take the default value.
# clresourcegroup create -p RG_SLM_TYPE=automated \ [-p RG_SLM_CPU_SHARES=value] \ -p -y RG_SLM_PSET_TYPE=value \ [-p RG_SLM_PSET_MIN=value] resource_group_name
Enables you to control CPU control usage and automates some steps to configure the Oracle Solaris OS for system resource management.
Specifies the number of CPU shares assigned to the resource group-specific project (project.cpu-shares) and determines the number of CPU shares assigned to the non-voting node (zone.cpu-shares) and the maximum number of processors in a processor set.
Enables the creation of a dedicated processor set. To have a dedicated processor set, you can set this property to strong or weak. The values strong and weak are mutually exclusive. That is, you cannot configure resource groups in the same zone so that some are strong and others weak.
Determines the minimum number of processors in the processor set.
Specifies the name of the resource group.
This step creates a resource group. You can alternatively use the clresourcegroup set command to modify an existing resource group.
You cannot set RG_SLM_TYPE to automated in a non-voting node if a pool other than the default pool is in the zone configuration or if the zone is dynamically bound to a pool other than the default pool. See the zonecfg(1M) and poolbind(1M) man pages for information about zone configuration and pool binding respectively. View your zone configuration as follows:
# zonecfg -z zone_name info pool
Note - A resource such as an HAStoragePlus or a LogicalHostname resource configured to start in a non-voting node but with the GLOBAL_ZONE property set to TRUE is started in the voting node. Even if you set the RG_SLM_TYPE property to automated, this resource does not benefit from the CPU shares and dedicated processor set configuration and is treated as in a resource group with RG_SLM_TYPE set to manual.
Specifies the name of the resource group.
Note - Do not remove or modify the SCSLM_resource_group_name project. You can add more resource control manually to the project, for example by configuring the project.max-lwps property. For more information, see the projmod(1M) man page.
Changes made to RG_SLM_CPU_SHARES and RG_SLM_PSET_MIN while the resource group is online are taken into account dynamically. However, if RG_SLM_PSET_TYPE is set to strong, and if not enough CPUs are available to accommodate the change, the change requested for RG_SLM_PSET_MIN is not applied. In this case, a warning message is displayed. On next switchover, errors because insufficient CPUs can occur if not enough CPUs are available to acknowledge the values that you configured for RG_SLM_PSET_MIN.
If an online resource group is no longer configured for CPU control in the non-voting node, the CPU share value for the non-voting node takes the value of zone.cpu-shares. This parameter has a value of 1 by default.
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