NTP peer server configuration with F5

[fanta_377379]

I have an issue to verify NTP peer server configuration with F5. In BIG_IP command line, the command is : ntpq -np and check the output. But, I have to replicate this in F5-SDK to automate the check between NTP Server and F5-sdk. is there another way to verify this? I was thinking about check in time on both: NTP and F5 and compare both, but I can see a way to fetch the time on NTP. Any help will be appreciate.

sylla

[rafaelbn]

Hello fanta!

There is another command you could use on the BIG-IP:

ntpstat

It outputs something like this:

[root@bigip1:Active:In Sync] config  ntpstat
synchronised to local net at stratum 11 
time correct to within 11 ms
polling server every 64 s
[root@bigip1:Active:In Sync] config  

Does this help?

Other than that, you could query your NTP server through ntpdate like so:

ntpdate -q 0.br.pool.ntp.org

But you will get some raw NTP response, not the actual time.

Hope this helps somehow.

Cheers! Rafael

[youssef1]

Hi,

You have 2 way to achieve your need:

You can use ntpq for that.

First, calculate the offset and store it in a var:

ntp_offset=$(ntpq -pn | /usr/bin/awk 'BEGIN { offset=1000 } $1 ~ /\*/ { offset=$9 } END { print offset }')

• Server OK when: ntp_offset < 1000
• Server unsynchronised when: ntp_offset >= 1000

The second way is to use ntpstat:

• Output when ntp is synched: synchronised to NTP server (10.1.11.33) at stratum 2 time correct to within 107 ms polling server every 1024 s

• Output when ntp is unsynchronised:

unsynchronised

For more info: https://www.cyberciti.biz/faq/linux-unix-bsd-is-ntp-client-working/

Regards

[fanta_377379]

Thanks a lot Rafaelbn, but I rewrite what I need to achieve below. Any help will be appreciated.