[BlueOnyx:17906] Re: Time 1 Hour Out

Richard Sidlin richard at sidlin.co.uk
Sat Jun 27 04:39:43 -05 2015


> 
> > 5208R - I have set the Time to GMT +0.00 (London) and added a UK NTP
> > Server but it keeps reverting to GMT despite us being in British Summer
> Time +1.00.
> > How can I remedy this please?
> 
> I presume you've used tzselect to pick the proper time zone.
> 
> I've found at least one problem with the fact that /etc/tz is just a
symlink
> regarding ssh and  /var/empty/sshd/etc/localtime  (according to a note I
> made there) which won't deal with a time zone change:
> 
> The local time zone must be here to prevent sshd from logging *some*
> (failed) logins to the syslog using UTC rather than local time.
> 
> Because log parsers such as fail2ban are sensitive to what time things
occur
> when they decide if there's been 'too many' of an event in some time
> interval tend to get very confused by entries with jumps backward and
> forward in time between entries.
> 
> See <https://bugzilla.redhat.com/show_bug.cgi?id=435472> where
> developers debate the subject, but also provide a 'cure' having the local
time
> info located here.  Later releases of software may have a different need.
> 
> Note also that the 'solution' was to use a command in the /etc/rc.d/sshd
> service file that performed the zone information copy upon startup.  That
> command was shown as
>         cp -af /etc/localtime /var/empty/sshd/etc/
> 
> The problem is that at least on some systems, the /etc/localtime entry is
just
> a symlink elsewhere, and it is the *symlink* that gets copied, not the
actual
> data needed.  And the symlink looks like
> 
>          localtime -> ../usr/share/zoneinfo/US/Eastern
> 
> The ../ implies go up one directory and look for the file under that, so
when it
> now resides in /var/empty/sshd/etc/ the ../ expects the data to appear in
> /var/empty/sshd/usr/share/zoneinfo/US/Eastern, and the entire path just
> isn't there!
> 
> Anyway, that's why this one bit of data is in this directory.
> _______________________________________________


I can't say I fully follow that but thank you. I simply select the
appropriate time zone in the GUI, add a UK NTP server and click save. There
is I guess an issue with that and BST?

Richard




More information about the Blueonyx mailing list