The object is to add an additional Management CPU to the NetScaler MPX for Management data processing and monitoring.

Instructions

You can use the NetScaler CLI, GUI, or NITRO API to allocate an extra management CPU. This section includes the following topics:

Allocate or deallocate an extra management CPU by using the NetScaler CLI

1. At the command prompt, type one of the following commands:

• enable extramgmtcpu
• disable extramgmtcpu

Note: After you enable and disable this feature, the NetScaler appliance displays a warning to restart the appliance, for the changes to take effect. 

To show the configured and effective state of an extra management CPU 

2. At the command prompt, type command: 

Note: In this example, the show command is entered before restarting the appliance. 

Parameter Descriptions of Commands Listed in the CLI Procedure

• enable extramgmtcpu
• Enables and dedicates extra CPU for management from PE pool.

See also:

• disable system extramgmtcpu
• show system extramgmtcpu

• disable extramgmtcpu
• show system extramgmtcpu
• Disables extra CPU for management and returns it to the PE pool.

See also:

• enable system extramgmtcpu

• show extramgmtcpu
• Displays configured and effective states of the extra management CPU.
• Configured and effective state are different if enable extramgmtcpu command has been entered but system is has not been restarted.

See also:

• enable system extramgmtcpu
• disable system extramgmtcpu

Allocate an extra management CPU by using the NetScaler GUI

To allocate an extra management CPU by using the NetScaler GUI:

1. Navigate to System > Settings and click Configure Extra Management CPU.
2. From the Configured State drop-down menu, select Enabled and then select OK.
3. To check CPU usage, go to System > Settings > Dashboard.

Configure an extra management CPU by using the NITRO API

Use the following NITRO methods and formats to enable, disable, and show an extra management CPU.

To enable an extra management CPU

HTTP Method: POST

URL: http://<NSIP>/nitro/v1/config/systemextramgmtcpu?action=enable

Payload: {"systemextramgmtcpu":{}}

curl -v -X POST -H "Content-Type: application/json" -u nsroot:nsroot http://10.102.201.92/nitro/v1/config/systemextramgmtcpu?action=enable -d '{"systemextramgmtcpu":{}}'

To disable an extra management CPU

HTTP Method: POST

URL: http://<NSIP>/nitro/v1/config/systemextramgmtcpu?action=disable

Payload: {"systemextramgmtcpu":{}}

curl -v -X POST -H "Content-Type: application/json" -u nsroot:nsroot http://10.102.201.92/nitro/v1/config/systemextramgmtcpu?action=disable -d '{"systemextramgmtcpu":{}}' 

To show an extra management CPU 

HTTP Method: GET 

URL: http://<NSIP>/nitro/v1/config/systemextramgmtcpu 

curl -v -X GET -H "Content-Type: application/json" -u nsroot:nsroot http://10.102.201.92/nitro/v1/config/systemextramgmtcpu 

Statistics and Monitoring

The following examples show the differences in the output of the stat system cpu and stat system commands before and after adding an extra management CPU.

1. stat system cpu

• This command displays statistics of CPUs.
• Here is a sample output before adding an extra management CPU on one of the supported models.

> stat system cpu

CPU statistics

ID         Usage
8              1
7              1
11             2
1              1
6              1
9              1
3              1
5              1
4              1
10             1
2              1

• Here is the output after adding an extra management CPU on the same MPX appliance. 

> stat system cpu

CPU statistics

ID         Usage
9              1
7              1
5              1
8              1
11             2
10             1
6              1
4              1
3              1
2              1
 

3. stat system

This command displays CPU use. In the following example, the output before adding an extra management CPU on one of the supported models is: 

Mgmt Additional-CPU  usage (%)      0.00

> stat system

NetScaler Executive View

System Information:

Up since        Wed Oct 11 11:17:54 2017
/flash Used (%)                        0
Packet CPU usage (%)                1.30
Management CPU usage (%)            4.00
Mgmt CPU0 usage (%)                 4.00
Mgmt Additional-CPU  usage (%)      0.00
Memory usage (MB)                   2167
InUse Memory (%)                    5.76
/var Used (%)                          0

In the following example, the output after adding an extra management CPU on the same MPX appliance is:

Mgmt Additional-CPU  usage (%)      0.80

> stat system

NetScaler Executive View

System Information:                     

Up since        Wed Oct 11 11:55:56 2017

/flash Used (%)                        0
Packet CPU usage (%)                1.20
Management CPU usage (%)            5.70
Mgmt CPU0 usage (%)                10.60
Mgmt Additional-CPU  usage (%)      0.80
Memory usage (MB)                   1970
InUse Memory (%)                    5.75
/var Used (%)                          0

Note: After you enable and disable this feature, the NetScaler appliance displays a warning to restart the appliance, for the changes to take effect.