Configuring DNS Servers

This chapter includes the following sections:

DNS Servers in Cisco UCS

You need to specify an external DNS server for each Cisco UCS instance to use if the system requires name resolution of hostnames. For example, you cannot use a name such as www.cisco.com when you are configuring a setting on a fabric interconnect if you do not configure a DNS server. You would need to use the IP address of the server.

Configuring a DNS Server

Procedure
      Command or Action Purpose
    Step 1 UCS-A# scope system  

    Enters system mode.

     
    Step 2 UCS-A /system # scope services  

    Enters system services mode.

     
    Step 3 UCS-A /system/services # create dns ip-addr  

    Configures the system to use the DNS server with the specified IP address.

     
    Step 4 UCS-A /system/services # commit-buffer  

    Commits the transaction to the system configuration.

     

    The following example configures a DNS server with the IP address 192.168.200.105 and commits the transaction:

    UCS-A# scope system
UCS-A /system # scope services
UCS-A /system/services # create dns 192.168.200.105
UCS-A /system/services* # commit-buffer
UCS-A /system/services #

    Deleting a DNS Server

    Procedure
        Command or Action Purpose
      Step 1 UCS-A# scope system  

      Enters system mode.

       
      Step 2 UCS-A /system # scope services  

      Enters system services mode.

       
      Step 3 UCS-A /system/services # delete dns ip-addr  

      Deletes the NTP server with the specified IP address.

       
      Step 4 UCS-A /system/services # commit-buffer  

      Commits the transaction to the system configuration.

       

      The following example deletes the DNS server with the IP address 192.168.200.105 and commits the transaction: 

      UCS-A# scope system
UCS-A /system # scope services
UCS-A /system/services # delete dns 192.168.200.105
UCS-A /system/services* # commit-buffer
UCS-A /system/services #