NTP Configuration on HMC with LPAR tool

NTP-Konfiguration HMC

The current status of NTP on an HMC can then be displayed using “hmc lsntp“:

$ hmc lsntp
NAME   XNTP     XNTPSTATUS    XNTPSERVER
hmc01  disable  -             -
hmc02  enable   synchronized  192.168.189.77,192.168.189.78
hmc03  enable   synchronized  192.168.189.77,192.168.189.78
$

Another NTP server can be added to the NTP configuration of an HMC using the “hmc addntpserver” command:

$ hmc addntpserver hmc01 192.168.189.77
$ hmc addntpserver hmc01 192.168.189.78
$

A check with “hmc lsntp” shows that two NTP servers are now configured, but NTP is still not activated:

$ hmc lsntp hmc01
NAME   XNTP     XNTPSTATUS  XNTPSERVER
hmc01  disable  -           192.168.189.77,192.168.189.78
$

NTP can now be activated with the command “hmc enablentp“:

$ hmc enablentp hmc01
$

The first sync may take a while:

$ hmc lsntp hmc01
NAME   XNTP    XNTPSTATUS      XNTPSERVER
hmc01  enable  unsynchronized  192.168.189.77,192.168.189.78
$

The time on the HMC is not yet synchronized immediately after enabling NTP (XNTPSTATUS: unsynchronized).

A detailed status for each NTP server can be obtained by using the “-a” option (all NTP servers):

$ hmc lsntp –a hmc01
NAME    SERVER         STATE          POLL_FREQ_SECONDS  SECONDS_SINCE_LAST_POLL
hmc01  192.168.189.77  not connected  64                 0
hmc01  192.168.189.78  not connected  64                 0
$

As soon as synchronization with one of the NTP servers is achieved, the overall status is synchronized:

$ hmc lsntp hmc01
NAME   XNTP    XNTPSTATUS    XNTPSERVER
hmc01  enable  synchronized  192.168.189.77,192.168.189.78
$

A more detailed description can be found here: NTP Configuration on the HMC

The LPAR tool can be downloaded for testing here: Download