Hal Murray wrote:
That is the same thing, isn't it? Other than that ntpdate was written by our expected ntpd author, and includes some functionality that maybe not all SNTP implementations have, like using adjtime for making small adjustments, using ntpdate from a cronjob is equivalent to using many SNTP packages. This type of usage has advantages and disadvantages. doing a DNS lookup for each request, and making maybe one request an hour, at least "guarantees" that you will get a responding server once in a while. When you use ntpd and one or more servers in /etc/ntp.conf, it can happen that the servers that were selected at boottime have ceased to exist or no longer want to be a timeserver and you remain polling them for the entire uptime of the system (which may be months or years). So, monitoring and manual action is required. I think when configured with a domainname (not a fixed address), ntpd should do a DNS lookup once in a while. Or at least do it when it detects the server is dead or not locked. But probably this list is not the place to get such a request communicated. Rob |
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