[mrtg] Impact of daylight saving on MRTG

[McDonald, Dan]

On Mon, 2009-06-08 at 00:17 +0600, Firdous Saleheen wrote:
> Hi,
> 
> We are using MRTG with RRDtool for network monitoring. The specifications
> are as belows:
> 
> MRTG version : 2.16.2
> RRDtool version : 1.2.27
> SNMP version : 1 and 3
> Platform : CentOS release 5.2 (Final)
> 
> My question is that is there any effect of daylight saving on MRTG graph?
> Do I need to change anything?

No.  rrdtool stores all timestamps in UTC.  Whatever is displayed uses
your /etc/localtime file.

> I live in Bangladesh which maintains BDT(UTC+6hr) for its time. From 19 June
> , 2009 it would forward its clock one hour i.e. the time would be then
> UTC+7hr. But there is no standard defined like Bdt  for it.

Is /usr/share/zoneinfo/right/Asia/Dhaka incorrect?

-- 
Daniel J McDonald, CCIE # 2495, CISSP # 78281, CNX
www.austinenergy.com
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