Hi, I´m running a Xen server with several virtual machines on it. I have a problem with the time of the machines. They unsynchronize very fast (in an hour several seconds). I try to use ntpd to syncronize them but It doesn´t work. I have set up a local ntp server with this ntp.conf: #grep ^[^#] /etc/ntp.conf restrict default kod nomodify notrap restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap server 1.rhel.pool.ntp.org server 2.rhel.pool.ntp.org server 127.127.1.0 fudge 127.127.1.0 stratum 10 driftfile /var/lib/ntp/drift keys /etc/ntp/keys restrict 1.rhel.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery restrict 2.rhel.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery server hora.roa.es restrict hora.roa.es mask 255.255.255.255 nomodify notrap noquery and the clients like this: restrict default kod nomodify notrap nopeer noquery tinker step 0 restrict 127.0.0.1 restrict -6 ::1 server 192.168.1.1 server 0.rhel.pool.ntp.org server 1.rhel.pool.ntp.org server 2.rhel.pool.ntp.org driftfile /var/lib/ntp/drift keys /etc/ntp/keys restrict 0.rhel.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery restrict 1.rhel.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery restrict 2.rhel.pool.ntp.org mask 255.255.255.255 nomodify notrap noquery restrict 192.168.1.1 mask 255.255.255.255 nomodify notrap noquery 192.168.1.1 is the first machine, the one I want to be the ntp local server. the param tinker step 0 I get from this http://wiki.dovecot.org/TimeMovedBackwards My real problem began with dovecot, because if the machine is not well syncronized the dovecot kills itself ( dovecot: Time just moved backwards by 8 seconds. This might cause a lot of problems, so I'll just kill myself now. http://wiki.dovecot.org/TimeMovedBackwards) so, I have two questions: 1 - Why my virtual machines unsynchronize so quickly? 2 - What am I doing wrong with ntpd? thanks in advance ESG -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subjecthttps://www.redhat.com/mailman/listinfo/redhat-list
