I have some remote servers running AIX 5.2 ML 2. They do not currently have the DST patch. If the servers are connected to a Network Time server, is there an issue with DST? Java? If I need to apply the patch, is there an easy way to apply a bare-bones update? I have the 'patch' from IBM, but it's a very large ( 2 GB ) file to apply remotely. Could I hard-code the Time change?
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- Thread starter ralisp
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Your safest bet is to apply the timezone value including the DST changeover dates/times.
NTP doesn't do anything for DST, that is only a protocol to keep the internal computer clock (which runs in CUT or GMT timezone) synchronized with a time server.
DST is a rule that defines how to present the internal computer clock to the users or to the system processes: how many hours/minutes ahead/behind CUT in standard time and how many hours/minutes ahead/behind CUT in daylight savings time, and when to changeover between standard and daylight savings time and back occur.
Remember that if you change the TZ value in the file /etc/environment, you need to reboot the server for the change to come into effect for all OS daemon processes. That is especially so for cron, which operates according to the wall clock time...
HTH,
p5wizard
NTP doesn't do anything for DST, that is only a protocol to keep the internal computer clock (which runs in CUT or GMT timezone) synchronized with a time server.
DST is a rule that defines how to present the internal computer clock to the users or to the system processes: how many hours/minutes ahead/behind CUT in standard time and how many hours/minutes ahead/behind CUT in daylight savings time, and when to changeover between standard and daylight savings time and back occur.
Remember that if you change the TZ value in the file /etc/environment, you need to reboot the server for the change to come into effect for all OS daemon processes. That is especially so for cron, which operates according to the wall clock time...
HTH,
p5wizard
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