Client Automation - Explanation about NOS and NOSRequest parameters

Products

• CA Client Automation - IT Client Manager
• CA Client Automation
• CA Client Automation - Software Delivery

Issue/Introduction

What are the differences between parameters NOS (NOS: Network Operating System Used) and NOSRequest (NOS: Request a specific Network Operating System) which appear in configuration policy under

 

DSM/Software Delivery/Shared ?

 

 

Environment

Client Automation - All versions

 

Resolution

Access Method to SD library for an agent could be defined in 2 different locations :

 

 

1- In database

It is possible to update its value via DSM Explorer by opening the Computer Properties :

 

 

 

 

or via following command executed on agent

 

sd_acmd SetDownloadMethod NOS

or

sd_acmd SetDownloadMethod NONE

 

 

 

 

 

2- In comstore of agent in parameter : itrm/usd/shared/NOS

Following command retrieve the current value :

 

ccnfcmda -cmd GetParameterValue -ps itrm/usd/shared -pn NOS

 

 

 

When SD agent should execute a package it checks the value defined in mdb database and value defined in comstore.

NONE (NOS-Less) overrides NOS.

 

 

Example :

If there are  

mdb = MS

Comstore = NONE

 

agent will use NONE

 

 

 

If there are  

mdb = NONE

Comstore = MS

 

agent will use NONE

 

 

If SD Agent uses MS and it does not work, it tries automatically NONE download method.

 

 

Parameter NOSrequest is used only to generate automatically (only once) a command like

sd_acmd SetDownloadMethod ...

 

in order to update the value in mdb database

 

 

Example :

 

If a machine receives a configuration policy containing NOSRequest=NONE, it will execute this command :

sd_acmd SetDownloadMethod NONE

 

So this machine will be configured in database with Download Method = NONE

SD Agent will use this method to access the SD package

 

 

Additional Information

In database Download Method in stored in table usd_target in column download_method (0=NOS, 1=NOS-Less, 2=DTS)

Following SQL Query could give the result for all computers

SELECT a.agent_name, 
CASE t.download_method
   WHEN 0 THEN 'Internal - NOS'
   WHEN 1 THEN 'Internal - NOS-less'
   WHEN 2 THEN 'DTS - NOS-less'
END 'Download Method'
FROM usd_target t
LEFT JOIN ca_agent a ON a.object_uuid=t.objectid