11-High Availability Command Reference

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12-Process placement commands
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12-Process placement commands 67.07 KB

Process placement commands

affinity location-set

Use affinity location-set to set the affinity of a process to a set of CPUs.

Use undo affinity location-set to remove the affinity setting for the specified CPUs for a process.

Syntax

In standalone mode:

affinity location-set { slot slot-number }&<1-5> { attract strength | default | none | repulse strength }

undo affinity location-set { slot slot-number }&<1-5>

In IRF mode:

affinity location-set { chassis chassis-number slot slot-number }&<1-5> { attract strength | default | none | repulse strength }

undo affinity location-set { chassis chassis-number slot slot-number }&<1-5>

Default

No location affinity is set for any process.

Views

Placement process view

Predefined user roles

network-admin

mdc-admin

Parameters

slot slot-number: Specifies an MPU by its slot number. (In standalone mode.)

chassis chassis-number slot slot-number: Specifies an MPU on an IRF member device. The chassis-number argument represents the member ID of the IRF member device. The slot-number argument represents the slot number of the MPU. If you do not specify an MPU, this command sets the affinity of a process to all MPUs. (In IRF mode.)

&<1-5>: Indicates that you can specify a maximum of five CPUs.

attract strength: Sets a positive affinity in the range of 1 to 100000. The higher the value, the stronger the preference for the process to run on the specified CPUs.

default: Sets the affinity to the default, a positive affinity of 200.

none: Sets the affinity to 0, which means the active process has no preference for any location and the system determines its location.

repulse strength: Sets a negative affinity in the range of 1 to 100000. The higher the value, the weaker the preference for the process to run on the specified CPUs.

Examples

# (In standalone mode.) Set a positive affinity of 500 to the specified slot for the staticroute process.

<Sysname> system-view

[Sysname] placement program staticroute

[Sysname-program-staticroute] affinity location-set slot 1 attract 500

affinity location-type

Use affinity location-type to set the affinity of a process to a location type.

Use undo affinity location-type to remove the affinity setting for the specified location type for a process.

Syntax

affinity location-type { current | paired | primary } { attract strength | default | none | repulse strength }

undo affinity location-type { current | paired | primary }

Default

No location type affinity is set for any process.

Views

Placement process view

Predefined user roles

network-admin

mdc-admin

Parameters

current: Specifies the affinity to the current location of the active process. You can use the display placement program command to view the current location of an active process.

paired: Specifies the affinity to the locations of all standby processes.

primary: Specifies the affinity to the active MPU. (In standalone mode.)

primary: Specifies the affinity to the global active MPU. (In IRF mode.)

attract strength: Sets a positive affinity in the range of 1 to 100000. The higher the value, the stronger the preference of the process to run on the specified location type.

default: Sets the affinity to the default, a positive affinity of 200.

none: Sets the affinity to 0, which means the active process does not have any preference for any location type and the system determines its location.

repulse strength: Sets a negative affinity in the range of 1 to 100000. The higher the value, the weaker the preference for the process to run on the specified location type.

Examples

# Set a positive affinity of 500 to the current location for the staticroute process.

<Sysname> system-view

[Sysname] placement program staticroute

[Sysname-program-staticroute] affinity location-type current attract 500

Related commands

affinity location-set

affinity program

affinity program

Use affinity program to set the affinity for one process to run on the same location as another process.

Use undo affinity program to remove the affinity setting for one process to run on the same location as the specified process.

Syntax

affinity program program-name { attract strength | default | none | repulse strength }

undo affinity program program-name

Default

No process affinity is set for any process.

Views

Placement process view

Predefined user roles

network-admin

mdc-admin

Parameters

program-name: Specifies the name of a process running on the device. The process name is a case-insensitive string of 1 to 15 characters. You can use the display placement program all command to view information about all processes running on the device.

attract strength: Sets a positive affinity in the range of 1 to 100000. The higher the value, the stronger the preference for the current process to run on the same location as the specified process.

default: Sets the affinity to the default, a positive affinity of 200.

none: Sets the affinity to 0, which means the active process has no preference for any other process and the system determines its location.

repulse strength: Sets a negative affinity in the range of 1 to 100000. The higher the value, the weaker the preference for the current process to run on the same location as the specified process.

Examples

# Set a negative affinity of 200 for the staticroute process to run on the same location as the syslog process.

<Sysname> system-view

[Sysname] placement program staticroute

[Sysname-program-staticroute] affinity program syslog repulse 200

Related commands

affinity location-set

affinity location-type

affinity self

Use affinity self to set the affinity of all instances of a process to run on the same location.

Use undo affinity self to restore the default.

Syntax

affinity self { attract strength | default | none | repulse strength }

undo affinity self

Default

No self affinity is set for any process.

Views

Placement process view

Predefined user roles

network-admin

mdc-admin

Parameters

attract strength: Specifies a positive affinity in the range of 1 to 100000. The higher the value, the stronger the preference for all the instances of the current process to run on the same location.

default: Sets the affinity to the default, a positive affinity of 200.

none: Sets the affinity to 0, which means the instances of the process have no preference to run on the same location and the system determines their locations.

repulse strength: Sets a negative affinity in the range of 1 to 100000. The higher the value, the weaker the preference for all the instances of the current process to run on the same location.

Usage guidelines

This command sets the preference for a process to run all its instances on the same location or different locations. If the process has only one instance, the command does not take effect.

The self affinity set in the placement process view of a process or any of its instances takes effect on all the instances of the process. If you execute this command multiple times, the most recent configuration takes effect.

To view the instances of a process, use the display placement program all command.

Examples

# Set a negative self affinity of 200 for the staticroute process.

<Sysname> system-view

[Sysname] placement program staticroute

[Sysname-program-staticroute] affinity self repulse 200

Related commands

affinity location-set

affinity location-type

display ha service-group

Use display ha service-group to display service group information.

Syntax

display ha service-group { service-group-name [ instance instance-name ] | all }

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

service-group-name: Specifies a service group running on the device. The service group name is a case-insensitive string of 1 to 15 characters.

instance instance-name: Specifies a service group instance by its name, a case-insensitive string of 1 to 31 characters.

all: Specifies all service groups running on the device.

Usage guidelines

A service group is a collection of processes. Typically, a service group contains only one process. If a process has instances, the corresponding service group also has instances.

Examples

# (In standalone mode.) Display information about all service groups.

<Sysname> display ha service-group all

Service Group                     Current Location      State

-------------------------------------------------------------------------------

syslog                            1/0                   Realtime Backup

...

# (In standalone mode.) Display information about the staticroute service group.

<Sysname> display ha service-group staticroute

Service Group                     Current Location      State

------------------------------------------------------------------------------

staticroute                       1/0 (Active)          Realtime Backup

 

  Detailed information about services of the program:

  Service           PID    Type      Location   State

  -------------------------------------------------------------

  ifm               200    Active    1/0        Realtime Backup

  staticroute       200    Active    1/0        Realtime Backup

Table 1 Command output

Field

Description

Service Group

Service group name.

Current Location

Current location of the active processes for a service group.

State

Backup state of the active and standby processes for a service group.

Detailed information about services of the program

Detailed information about all active and standby processes in a service group.

Service

Service name.

PID

Process ID.

Type

Process type: Active or Standby.

Location

Location of the active process of a service.

State

Process status:

·     Realtime Backup.

·     Batch Backup.

·     Stopping.

·     Degrading.

·     Upgrading.

display placement location

Use display placement location to display the processes running on the specified location.

Syntax

In standalone mode:

display placement location { all | slot slot-number }

In IRF mode:

display placement location { all |chassis chassis-number slot slot-number }

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

all: Displays all processes running on the device.

slot slot-number: Specifies an MPU by its slot number. (In standalone mode.)

chassis chassis-number slot slot-number: Specifies an MPU on an IRF member device. The chassis-number argument represents the member ID of the IRF member device. The slot-number argument represents the slot number of the MPU. (In IRF mode.)

Examples

# (In standalone mode.) Display all processes running on the device.

<Sysname> display placement location all

Program(s) placed at location: 1/0

  syslog

...

display placement policy

Use display placement policy to display process placement policy information.

Syntax

display placement policy program { program-name | all | default }

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

program-name: Specifies a process by its name, a case-insensitive string of 1 to 15 characters.

all: Displays all process placement policies.

default: Displays the default process placement policy. If no default process placement policy is configured by using the placement program default command, the display placement policy program default command does not display any information.

Usage guidelines

The information about a placement policy is displayed only when the placement policy is configured for the specified process.

Examples

# (In standalone mode.) Display the default process placement policy.

<Sysname> display placement policy program default

Program: [default]                                : source

----------------------------------------------------------

  affinity location-set slot 1 attract 500        : system [default]

Table 2 Command output

Field

Description

Program

Process name and the placement policy for the process. If you execute the display placement policy program default command, the process name is displayed as [default].

source

Source of the setting. If a default placement setting is configured in the view you enter with the placement program default command, this field displays system [default]. If a placement setting for the staticroute process is configured in the view you enter with the placement program program-name command, this field displays system staticroute.

display placement program

Use display placement program to display the location of an active process.

Syntax

display placement program { program-name | all }

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

program-name: Specifies a process by its name, a case-insensitive string of 1 to 15 characters.

all: Specifies all processes running on the device.

Examples

# (In standalone mode.) Display the location of the staticroute active process.

<Sysname> display placement program staticroute

Program                           Placed at location

----------------------------------------------------

staticroute                       1/0

Table 3 Command output

Field

Description

Program

Process name.

Placed at location

Location of the active process.

If the active process is abnormal or is starting up, this field displays NA.

display placement reoptimize

Use display placement reoptimize to display the predicted location changes that will occur after you execute the placement reoptimize command.

Syntax

display placement reoptimize program { program-name [ instance instance-name ] | all }

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

program-name: Specifies a process (that supports process optimization) by its name, a case-insensitive string of 1 to 15 characters.

instance instance-name: Specifies an instance of the specified process. The instance name is a case-insensitive string of 1 to 31 characters. Whether a process has multiple instances depends on the system software.

all: Specifies all processes that are running on the device and that support process optimization.

Examples

# (In standalone mode.) Display the predicted location changes for all processes.

<Sysname> display placement reoptimize program all

Predicted changes to the placement

Program                           Current location       New location

---------------------------------------------------------------------

staticroute                       1/0                    1/0

...

The output shows the process name, current location of the active process, and new location of the active process after optimization.

placement program

Use placement program to enter placement process view.

Use undo placement program to delete the placement policy for a process.

Syntax

placement program { program-name [ instance instance-name ] | default }

undo placement program { program-name [ instance instance-name ] | default }

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

program-name: Specifies a process name, a case-insensitive string of 1 to 15 characters.

instance instance-name: Specifies the name of an instance of the specified process. The instance name is a case-insensitive string of 1 to 31 characters. Whether a process has multiple instances depends on the system software.

default: Configures the default placement policy for all processes.

Usage guidelines

You configure a process placement policy to optimize the distribution of processes in your system for optimal distribution of CPU and memory resources.

A process placement policy contains the affinity location-type, affinity location-set, affinity program, and affinity self commands. The commands describe the preferences of the process for a specific location.

You can configure all the affinity commands in the placement policy for a process. Based on the placement policy and hardware resources, the system automatically determines the location for running the active process. Before you apply the policy, you can use the display placement reoptimize command to view the predicted location for the process. When a process switchover occurs, the process on the predicted location is selected as the active process.

Examples

# Enter the placement process view of the staticroute process.

<Sysname> system-view

[Sysname] placement program staticroute

[Sysname-program-staticroute]

# Enter the default placement process view.

<Sysname> system-view

[Sysname] placement program default

[Sysname-program-default]

placement reoptimize

Use placement reoptimize to apply configured process placement policies for optimizing process placement.

Syntax

placement reoptimize

Views

System view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

To avoid neighbor flapping of related protocols, make sure HA features such as NSR or GR are configured for the processes and are stable before optimizing process placement.

After you execute this command, the system bases its placement decisions on the new process placement policies, hardware resources, and locations and states of active processes. The process on the new location is selected as the active process. If the new location for an active process is different from its current location, a process switchover is triggered. The system changes the state of the original active process to standby and the state of the standby process on the new location to active. You can use the display placement program command to view the new location of the active process.

To keep the system stable, do not perform any tasks that require process restart when you execute this command.

Examples

# (In standalone mode.) Reoptimize process placement.

<Sysname> system-view

[Sysname] placement reoptimize

Predicted changes to the placement

Program                           Current location       New location

---------------------------------------------------------------------

staticroute                       1/0                    1/0                   

Continue? [y/n]:y

Re-optimization of the placement start. You will be notified on completion

Re-optimization of the placement complete. Use 'display placement' to view the new placement

This example uses only the staticroute process.