Подключение сервера с БД к внешнему сервису синхронизации времени

1. Установить утилиту chrony:

   sudo apt install chrony
   

2. Отредактировать конфигурационный файл chrony для синхронизации с сервером времени, который развернут на узле с ролью leader:

   • Открыть конфигурационный файл:

     sudo nano /etc/chrony/chrony.conf
     

   • Добавить директиву server {{ multivdi_swarm_leader_address }} iburst prefer вместо {{ multivdi_swarm_leader_address }} указать реальный IP-адрес узла с ролью leader.

     Пример конфигурационного файла chrony

     # Welcome to the chrony configuration file. See chrony.conf(5) for more
     # information about usable directives.
     
     # Include configuration files found in /etc/chrony/conf.d.
     confdir /etc/chrony/conf.d
     
     # Use Debian vendor zone.
     pool 2.debian.pool.ntp.org iburst
     
     server {{ multivdi_swarm_leader_address }} iburst prefer
     server ntp3.vniiftri.ru iburst
     server ntp4.vniiftri.ru iburst
     server ntp21.vniiftri.ru iburst
     server vniiftri2.khv.ru iburst
     server ntp2.niiftri.irkutsk.ru iburst
     server ntp1.vniiftri.ru iburst
     server ntp2.vniiftri.ru iburst
     
     # Use time sources from DHCP.
     sourcedir /run/chrony-dhcp
     
     # Use NTP sources found in /etc/chrony/sources.d.
     sourcedir /etc/chrony/sources.d
     
     # This directive specify the location of the file containing ID/key pairs for
     # NTP authentication.
     keyfile /etc/chrony/chrony.keys
     
     # This directive specify the file into which chronyd will store the rate
     # information.
     driftfile /var/lib/chrony/chrony.drift
     
     # Save NTS keys and cookies.
     ntsdumpdir /var/lib/chrony
     
     # Uncomment the following line to turn logging on.
     #log tracking measurements statistics
     
     # Log files location.
     logdir /var/log/chrony
     
     # Stop bad estimates upsetting machine clock.
     maxupdateskew 100.0
     
     # This directive enables kernel synchronisation (every 11 minutes) of the
     # real-time clock. Note that it can't be used along with the 'rtcfile' directive.
     rtcsync
     
     # Step the system clock instead of slewing it if the adjustment is larger than
     # one second, but only in the first three clock updates.
     makestep 10 3
     
     # Get TAI-UTC offset and leap seconds from the system tz database.
     # This directive must be commented out when using time sources serving
     # leap-smeared time.
     leapsectz right/UTC
     

3. Запустить службу chrony.

   sudo systemctl start chrony
   

4. Принудительно синхронизировать время:

   sudo chronyc -a makestep