An Ansible Playbook to initialize Debian and Ubuntu systems.
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  1. # Welcome to the chrony configuration file. See chrony.conf(5) for more
  2. # information about usuable directives.
  3. # This will use (up to):
  4. # - 4 sources from ntp.ubuntu.com which some are ipv6 enabled
  5. # - 2 sources from 2.ubuntu.pool.ntp.org which is ipv6 enabled as well
  6. # - 1 source from [01].ubuntu.pool.ntp.org each (ipv4 only atm)
  7. # This means by default, up to 6 dual-stack and up to 2 additional IPv4-only
  8. # sources will be used.
  9. # At the same time it retains some protection against one of the entries being
  10. # down (compare to just using one of the lines). See (LP: #1754358) for the
  11. # discussion.
  12. #
  13. # About using servers from the NTP Pool Project in general see (LP: #104525).
  14. # Approved by Ubuntu Technical Board on 2011-02-08.
  15. # See http://www.pool.ntp.org/join.html for more information.
  16. server ntp.cut.ac.cy
  17. #pool ntp.ubuntu.com iburst maxsources 4
  18. #pool 0.ubuntu.pool.ntp.org iburst maxsources 1
  19. #pool 1.ubuntu.pool.ntp.org iburst maxsources 1
  20. #pool 2.ubuntu.pool.ntp.org iburst maxsources 2
  21. # This directive specify the location of the file containing ID/key pairs for
  22. # NTP authentication.
  23. keyfile /etc/chrony/chrony.keys
  24. # This directive specify the file into which chronyd will store the rate
  25. # information.
  26. driftfile /var/lib/chrony/chrony.drift
  27. # Uncomment the following line to turn logging on.
  28. #log tracking measurements statistics
  29. # Log files location.
  30. logdir /var/log/chrony
  31. # Stop bad estimates upsetting machine clock.
  32. maxupdateskew 100.0
  33. # This directive enables kernel synchronisation (every 11 minutes) of the
  34. # real-time clock. Note that it can’t be used along with the 'rtcfile' directive.
  35. rtcsync
  36. # Step the system clock instead of slewing it if the adjustment is larger than
  37. # one second, but only in the first three clock updates.
  38. makestep 1 3