Time synchronization problem on Proxmox 5.1

[D.P.]

Hi!
I have got server Fujitsu Primergy RX2560M4 with 2x CPU Intel(R) Xeon(R) Silver 4114 CPU @ 2.20GHz
and mainboard D3384-A1x. Latest BIOS and IRMC are installed.

I've installed 2 node Proxmox cluster with Ceph storage on this server and another older Fujitsu server.
There is a problem with time synchronization on newer server from the moment of installation.
Server never could synchronize time with Proxmox running. I used ntpd and timesync services, manually update time.
I read many tips from forums. Time couldn't be synchronized on Proxmox 5.x.
There is every few minutes clock skew.

Last day I installed SUSE Enterprise Server 12 SP3, run ntp service and after few minutes time has been synchronized.
On Ubuntu 16.04.4 LTS time synchronization works too.
SUSE uses kernel version 4.4.73-5, Ubuntu 16 - 4.4.0-116 and Proxmox uses kernel version 4.13.13-42.

What is wrong with Proxmox that I can't synchronize time on the server?

 

[NewDude]

Just to be clear: same physical servers, same network rules, same IP addresses, install Proxmox = no time sync, install SUSE/Ubuntu and time sync works? I'm just trying to rule out network issues - in my case time problems were caused by a misconfigured firewall.

 

[D.P.]

Yes for:

Just to be clear: same physical servers, same network rules, same IP addresses, install Proxmox = no time sync, install SUSE/Ubuntu and time sync works?

The firewall on Proxmox or another one?

 

[NewDude]

The firewall on Proxmox or another one?

I was trying to help you isolate the problem. I had Proxmox problems because the machines in the cluster weren't using the same time, and ntp wasn't working its magic because when I'd configured the firewall I configured ntp using TCP ports. This didn't work because ntp uses udp so time sync wasn't happening.

My question: are you sure that the other forms of Linux you're using that are updating from timeservers properly are running on the same rules/configuration that are applied to your proxmox servers?

 

[D.P.]

For others Linuxes I use only one HD, Proxmox installation is on RAID.

 

[t.lamprecht]

What does:

timedatectl

outputs?

 

[t.lamprecht]

hmm strange, and your time synch services do infact run:

systemctl status systemd-timesyncd ntp.service

 

[D.P.]

root@pcn1:~# timedatectl
      Local time: Fri 2018-03-23 11:21:59 CET
  Universal time: Fri 2018-03-23 10:21:59 UTC
        RTC time: Fri 2018-03-23 10:21:59
       Time zone: Europe/Warsaw (CET, +0100)
 Network time on: yes
NTP synchronized: yes
 RTC in local TZ: no

 

[D.P.]

root@pcn1:~# systemctl status systemd-timesyncd ntp.service
● systemd-timesyncd.service - Network Time Synchronization
   Loaded: loaded (/lib/systemd/system/systemd-timesyncd.service; enabled; vendor preset: enabled)
  Drop-In: /lib/systemd/system/systemd-timesyncd.service.d
           └─disable-with-time-daemon.conf
   Active: inactive (dead)
Condition: start condition failed at Fri 2018-03-23 10:55:45 CET; 26min ago
           └─ ConditionFileIsExecutable=!/usr/sbin/ntpd was not met
     Docs: man:systemd-timesyncd.service(8)

● ntp.service - LSB: Start NTP daemon
   Loaded: loaded (/etc/init.d/ntp; generated; vendor preset: enabled)
   Active: active (running) since Fri 2018-03-23 10:55:58 CET; 26min ago
     Docs: man:systemd-sysv-generator(8)
  Process: 2448 ExecStart=/etc/init.d/ntp start (code=exited, status=0/SUCCESS)
    Tasks: 2 (limit: 23347)
   Memory: 3.7M                                                                                                                                                                                                                             
      CPU: 133ms                                                                                                                                                                                                                             
   CGroup: /system.slice/ntp.service                                                                                                                                                                                                         
           └─2502 /usr/sbin/ntpd -p /var/run/ntpd.pid -g -u 109:115                                                                                                                                                                         
                                                                                                                                                                                                                                            
Mar 23 10:55:58 pcn1 ntpd[2502]: Listen normally on 6 vmbr2 192.168.22.21:123                                                                                                                                                               
Mar 23 10:55:58 pcn1 ntpd[2502]: Listen normally on 7 lo [::1]:123                                                                                                                                                                           
Mar 23 10:55:58 pcn1 ntpd[2502]: Listen normally on 8 vmbr0 [fe80::921b:eff:fee7:eb8a%9]:123                                                                                                                                                 
Mar 23 10:55:58 pcn1 ntpd[2502]: Listen normally on 9 bond1 [fe80::a236:9fff:fe20:474c%10]:123                                                                                                                                               
Mar 23 10:55:58 pcn1 ntpd[2502]: bind(26) AF_INET6 fe80::6a05:caff:fe41:ddf4%11#123 flags 0x11 failed: Cannot assign requested address                                                                                                       
Mar 23 10:55:58 pcn1 ntpd[2502]: unable to create socket on vmbr1 (10) for fe80::6a05:caff:fe41:ddf4%11#123                                                                                                                                 
Mar 23 10:55:58 pcn1 ntpd[2502]: failed to init interface for address fe80::6a05:caff:fe41:ddf4%11                                                                                                                                           
Mar 23 10:55:58 pcn1 ntpd[2502]: Listen normally on 11 vmbr2 [fe80::6a05:caff:fe41:ddf5%12]:123                                                                                                                                             
Mar 23 10:55:58 pcn1 ntpd[2502]: Listening on routing socket on fd #27 for interface updates                                                                                                                                                 
Mar 23 10:56:00 pcn1 ntpd[2502]: Listen normally on 12 vmbr1 [fe80::6a05:caff:fe41:ddf4%11]:123

 

[floh]

Hello!

I am having the same problem.

When I type timedatectl
it is like above but:
NTP synchronized: no

Any idea how it solve it?

 

[D.P.]

Hi!
I've disabled timesyncd and installed ntp daemon.
To sync time on server: shutdown all proxmox services (especially ceph if is running), sync time manually and next run proxmox services.
This