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тАО10-12-2008 09:30 PM
тАО10-12-2008 09:30 PM
We have a site which would require changes such that DST is enable as from October 26, 2008.
Changes have been made to the HP-UX 11.11 server but when running a simple test, the time does not switch at the mentioned tick!
Below the configuration details:
[/etc/TIMEZONE]
===============
SERVER2:home>cat /etc/TIMEZONE
TZ=MUT-4
export TZ
SERVER2:home>
[/usr/lib/tztab]
================
SERVER2:home>tail /usr/lib/tztab
0 1 25-31 10 1970-1973 0 CSM6
0 1 24-30 11 1974 0 CSM6
0 1 25-31 10 1975-2038 0 CSM6
# Timezone MUT-4MUST
MUT-4MUST
0 3 25-31 10 2008-2038 0 MUST-5
0 1 25-31 3 2009-2038 0 MUT-4
SERVER2:home>
[Simple test]
=============
SERVER2:home>./test2.sh
Testing transition to DST on 26/10/08:
Sun Oct 26 01:59:00 MUT 2008
Sun Oct 26 01:59:15 MUT 2008
Sun Oct 26 01:59:30 MUT 2008
Sun Oct 26 01:59:45 MUT 2008
Sun Oct 26 02:00:00 MUT 2008
Sun Oct 26 02:00:15 MUT 2008
Done!
SERVER2:home>
[dst.pl]
========
Also tried Clay's script - does not show anything.
SERVER2:home> TZ=MUT-4MUST dst.pl
SERVER2:home>
NB. The server has already been restarted after the mentioned changes.
Did miss any steps?
Thanking you in advance for any guidances.
kind regards
yogeeraj
Solved! Go to Solution.
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тАО10-12-2008 10:18 PM
тАО10-12-2008 10:18 PM
Re: DST: requiring changes for CTU-4
Great, you can test without rebooting.
MUT-4MUST
0 3 25-31 10 2008-2038 0 MUST-5
0 1 25-31 3 2009-2038 0 MUT-4
You need to specify both rules for every year, especially 2008.
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тАО10-12-2008 10:30 PM
тАО10-12-2008 10:30 PM
Re: DST: requiring changes for CTU-4
Thank you for the followup.
Made the changes as you mentioned but it is still not ok.
# Timezone MUT+4MUST
MUT-4MUST
0 1 25-31 3 2008 0 MUT-4
0 1 25-31 3 2009-2038 0 MUT-4
0 3 25-31 10 2008-2038 0 MUST-5
please advise further
kind regards
yogeeraj
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тАО10-12-2008 11:21 PM
тАО10-12-2008 11:21 PM
Re: DST: requiring changes for CTU-4
I'll have to look at it when I get to work.
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тАО10-13-2008 10:34 AM
тАО10-13-2008 10:34 AM
Re: DST: requiring changes for CTU-4
right now, it appears that you may have the rule set for 3:59am, and tested at 2, but I can't tell, and you've mentioned MST/MUT/CUT
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тАО10-13-2008 10:43 AM
тАО10-13-2008 10:43 AM
Re: DST: requiring changes for CTU-4
Pete
Pete
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тАО10-13-2008 11:34 AM
тАО10-13-2008 11:34 AM
Re: DST: requiring changes for CTU-4
I read that as "at 3:59 on the Sunday that occurs 10/25 - 10/31, change the time to GMT-5.
I think he's after Canadian Eastern, but I can't tell for sure. Note also, that he appears to have the transition to/from DST swapped from the usual order, which should make no difference, except I kept reading the wrong one....l.
My file (last year patch) has entries for #Canada, that might be what he needs...or not, since he hasn't yet specified what he's trying to get to....
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тАО10-13-2008 11:43 AM
тАО10-13-2008 11:43 AM
Re: DST: requiring changes for CTU-4
Is this what you typed exactly? try it again as I did it below.
What does your test2.sh do?
I added your entries to my /usr/lib/tztab and did
export TZ=MUT-4MUST
./dst.pl
and got the correct results
Sun Apr 06 01:59:59 MUT 2008 --> Sun Apr 06 03:00:00 MUST 2008
Sun Oct 26 01:59:59 MUST 2008 --> Sun Oct 26 01:00:00 MUT 2008
The "Sun Apr 06" is because the new DST entry starts in 2009 so it defaults Apr 06.
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тАО10-13-2008 12:15 PM
тАО10-13-2008 12:15 PM
Re: DST: requiring changes for CTU-4
I think Yogeeraj already did that by his tztab entry and his output from his tool. :-)
But it never hurts to be this precise.
>it appears that you may have the rule set for 3:59am, and tested at 2, but I can't tell
No, this jumps from 1:59 to 3. I.e. the result AFTER the change.
>OldSchool:
>0 3 25-31 10 2008-2038 0 MUST-5
>I read that as "at 3:59 on the Sunday that occurs 10/25 - 10/31, change the time to GMT-5.
No, it's at 1:59 change to 3 for UTC-5.
>I think he's after Canadian Eastern
Why? With N logical inferences, you should know that Yogeeraj is in the southern hemisphere where everything is upside down and he is ahead of GMT.
You do know there could be (24*3)+ timeszones?
>that he appears to have the transition to/from DST swapped from the usual order,
That may be the issue but he is upside down and he did say: DST is enable as from October 26, 2008.
>TTr: got the correct results
Yes, I got those results on 11.23.
But without that extra 2008 rule, it would look like:
Sun Mar 30 01:59:59 MUST 2008 --> Sun Mar 30 01:00:00 MUT 2008
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тАО10-13-2008 11:45 PM
тАО10-13-2008 11:45 PM
Re: DST: requiring changes for CTU-4
First of all, thank you everyone for comments and analysis. Thank you Dennis for the precision and clarifications on my behalf. Yes. We are in the Southern Hemisphere. ( ..where everything is upside down?? :) )
Coming back to the problem, we are doing a BRUTE FORCE test by actually rolling forward the time and let the clock tick through the defined transition.
TTr:
====
Thank your input.
As per your reply, We find that we will need to set our TZ variable to MUT-4MUST for this to work properly.
Now, the following questions:
QU. What should we put in the /etc/TIMEZONE file? (TZ=MUT-4MUST ?)
QU. What will happen if we restart the server between October 26, 2008 and March 29, 2009?
here is the code in the script:
SERVER2:home>cat test2.sh
#!/bin/ksh
# date [MMDDhhmm[[CC]YY][.ss]]
#
# NB. TO BE USED WITH CAUTION.
# NB. TO BE USED WITH CAUTION.
# NB. TO BE USED WITH CAUTION.
# NB. TO BE USED WITH CAUTION.
# NB. TO BE USED WITH CAUTION.
# NB. TO BE USED WITH CAUTION.
# NB. TO BE USED WITH CAUTION.
# All databases, applications,etc should be shutdown prior to tests.
# 01/10/2008-YD
#
# First loop test - set the date to 01:59:00 on 26/10/08
# and display the date every 15 seconds for a minute
# and a half.
export TZ=MUT-4MUST
echo "\nTesting transition to DST on 26/10/08:"
lcv1=6
if [ $(whoami) = "root" ]
then
## date [MMDDhhmm[[CC]YY][.ss]]
date 102601592008 > /dev/null
fi
while (( lcv1 > 0 ))
do
let lcv1-=1
date
if [ "$lcv1" = 0 ]
then
break
fi
sleep 15
done
# Second loop test - set the date to 00:59:00 on 29/03/09
# and display the date every 60 seconds for a minute
# and a half.
# NB. TZ should be in MUST so that switch to MUT is performed.
#
echo "\nTesting transition back from DST on 29/03/09:"
lcv2=120
if [ $(whoami) = "root" ]
then
## date [MMDDhhmm[[CC]YY][.ss]]
date 032900592009 > /dev/null
fi
while (( lcv2 > 0 ))
do
let lcv2-=1
date
if [ "$lcv2" = 0 ]
then
break
fi
sleep 60
done
echo "Done!"
# NB. TO BE USED WITH CAUTION.
# NB. TO BE USED WITH CAUTION.
# NB. TO BE USED WITH CAUTION.
# NB. TO BE USED WITH CAUTION.
SERVER2:home>
Below the results when we run the script:
=========================================
SERVER2:home>./test2.sh
Testing transition to DST on 26/10/08:
Sun Oct 26 01:59:00 MUT 2008
Sun Oct 26 01:59:15 MUT 2008
Sun Oct 26 01:59:30 MUT 2008
Sun Oct 26 01:59:45 MUT 2008
Sun Oct 26 03:00:00 MUST 2008
Sun Oct 26 03:00:15 MUST 2008
Testing transition back from DST on 29/03/09:
Sun Mar 29 00:59:00 MUST 2009
Sun Mar 29 01:00:00 MUST 2009
Sun Mar 29 01:01:00 MUST 2009
Sun Mar 29 01:02:00 MUST 2009
Sun Mar 29 01:03:00 MUST 2009
Sun Mar 29 01:04:00 MUST 2009
Sun Mar 29 01:05:00 MUST 2009
Sun Mar 29 01:06:00 MUST 2009
Sun Mar 29 01:07:00 MUST 2009
Sun Mar 29 01:08:00 MUST 2009
Sun Mar 29 01:09:00 MUST 2009
Sun Mar 29 01:10:00 MUST 2009
...
Sun Mar 29 01:43:00 MUST 2009
Sun Mar 29 01:44:00 MUST 2009
Sun Mar 29 01:45:00 MUST 2009
Sun Mar 29 01:46:00 MUST 2009
Sun Mar 29 01:47:00 MUST 2009
Sun Mar 29 01:48:00 MUST 2009
Sun Mar 29 01:49:01 MUST 2009
Sun Mar 29 01:50:01 MUST 2009
Sun Mar 29 01:51:01 MUST 2009
Sun Mar 29 01:52:01 MUST 2009
Sun Mar 29 01:53:01 MUST 2009
Sun Mar 29 01:54:01 MUST 2009
Sun Mar 29 01:55:01 MUST 2009
Sun Mar 29 01:56:01 MUST 2009
Sun Mar 29 01:57:01 MUST 2009
Sun Mar 29 01:58:01 MUST 2009
Sun Mar 29 01:59:01 MUST 2009
Sun Mar 29 01:00:01 MUT 2009
Sun Mar 29 01:01:01 MUT 2009
Sun Mar 29 01:02:01 MUT 2009
Sun Mar 29 01:03:01 MUT 2009
Sun Mar 29 01:04:01 MUT 2009
Sun Mar 29 01:05:01 MUT 2009
..
SERVER2:home>
TTr:
====
When we run the script as you mention, we now get:
SERVER2:home> export TZ=MUT-4MUST
SERVER2:home> date
Tue Oct 14 09:11:17 MUT 2008
SERVER2:home> ./dst.pl -y 2008
Sun Oct 26 01:59:59 MUT 2008 --> Sun Oct 26 03:00:00 MUST 2008
SERVER2:home> ./dst.pl -y 2009
Sun Mar 29 01:59:59 MUST 2009 --> Sun Mar 29 01:00:00 MUT 2009
Sun Oct 25 01:59:59 MUT 2009 --> Sun Oct 25 03:00:00 MUST 2009
SERVER2:home>
kind regards
yogeeraj