[CentOS] ntpd stuck on stratum 16 = not synced
Sean Carolan
scarolan at gmail.comWed Jan 16 17:50:44 UTC 2008
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> This is almost certainly incorrect unless you're running a very, very > old RHEL/CentOS release. I believe /var/lib/ntp is the canonical > directory for the drift file in 4.x and 5.x. I doubt ntpd is allowed to > write to /etc/ntp, especially if SELinux is enabled. Good observation, Paul. That configuration is in fact from an ancient version of Red Hat which I plan to upgrade this week. > Have you tried shutting down ntpd and relaunching it manually with the > "don't fork and give me lots of debugging output" switches (-n -ddd) > enabled? > > Alternatively (or additionally), you might try wrapping ntpd in strace > to see if any system calls are being thwarted. I learned today that our ISP is blocking UDP traffic. I am going to ask them to make an exception for port 123 to fix this.
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