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1) add the commands to /config/startup on v CMP host.
iptables -t nat -D PREROUTING -m physdev --physdev-in mgmt_vm_tap_ -j ACCEPT iptables -t nat -I PREROUTING 1 -m physdev --physdev-in mgmt_vm_tap_ -j ACCEPT 2) run the following command at v CMP host bash prompt: clsh iptables -t nat -I PREROUTING 1 -m physdev --physdev-in mgmt_vm_tap_ -j ACCEPT I have a management default route, and also a default route in the main global table. Do I really need to add a static route when the default already points in the right direction?
In this example, the system clock was off by a laughably small fraction of a second.
You generally don’t need to do this if you use the “Set date and time automatically” feature within the Date & Time system preferences, though by setting clocks through the command line you could be sure that each machine on a network shows the exact same time.
First let me confirm 100% that ntpdate is deprecated in Ubuntu 16.04 which means it is no longer used, yet some genius at Canonical decided not only to include it with fresh new installs of Ubuntu 16.04 despite the fact that it has been replaced with something called timedatectl, but also to keep it when people upgrade instead of warning them during the upgrade process about this very mission critical thing that can totally screw up your server time as happened to me.
ID487233 ntp from a guest is being blocked by host side firewall rules the following is workaround.
Local time: Tue 2017-04-11 SAST Universal time: Tue 2017-04-11 UTC RTC time: Tue 2017-04-11 Time zone: Africa/Johannesburg (SAST, 0200) Network time on: yes NTP synchronized: yes RTC in local TZ: noremote refid st t when poll reach delay offset jitter ============================================================================== *nist1-lnk.binar . 1 u 872 1024 377 32.028 4.001 0.026 2.70 184.108.40.206 2 u 481 1024 377 23.152 -11.972 0.237 -ntp220.127.116.11.252 2 u 1026 1024 377 26.160 -7.960 0.032 ntp18.104.22.168.251 3 u 798 1024 377 19.403 -0.363 0.029 -ntp22.214.171.124.251 3 u 316 1024 377 14.377 9.362 4.976Local time: Tue 2017-04-11 SAST Universal time: Tue 2017-04-11 UTC RTC time: Tue 2017-04-11 Time zone: Africa/Johannesburg (SAST, 0200) Network time on: yes NTP synchronized: yes RTC in local TZ: no STEP 14: If everything checks out we want one final step now to make sure NTP is monitored and if it ever happens to fail for some reason it will get restarted and you will get notified by email about it.