System time is wrong in Proxmox VE host, how can I fix it?

Question

I have a method inside a DLL library. How do I detect if it's called from a Winforms or Console application?

Thanks.

Solution

What does

/usr/sbin/ntpq -p

show?

Try doing

sntp -P no -r pool.ntp.org

to set the time right and do afterwards a

hwclock --systohc

to write the time to the hardware clock.

Comments

[Emre Sevinç]

$ ntpq -p remote refid st t when poll reach delay offset jitter ============================================================‌​================== ns.ttosi.net .INIT. 16 u - 1024 0 0.000 0.000 0.000 79.99.122.30 .INIT. 16 u - 1024 0 0.000 0.000 0.000 xen02.cblue.be .INIT. 16 u - 1024 0 0.000 0.000 0.000 ns2.ttosi.net .INIT. 16 u - 1024 0 0.000 0.000 0.000

[Emre Sevinç]

I had to install msntp package because I could not find anything starting with sntp. Anyway running msntp -P no -r pool.ntp.org just led to a long long wait so I had to Ctrl-c it. On the other hand when I did dpkg-reconfigure tzdata and then selected None of the above and then UTC it started to show the correct time. However I don't know if this is the right thing to do, e.g. changing the timezone from Europe/Brussels to Etc/UTC. On other Linux systems I used (mostly Ubuntu) I set the timezone according to the geographical location and did not encounter any problems. That's why I'm confused.

[Emre Sevinç]

Apparently the NTP port 123 was blocked on the firewall, the problem is solved after port 123 is opened. Thanks for the detailed answer.