[rrd-users] Automatic Timestamp in RRD graphs

[Karl Fischer]

Tobias Oetiker wrote:
> Martin,
> 
> Today Martin Knoblauch wrote:
> 
>>  I think my reply/question did not hit the list ...
>>
>>
>> ----- Original Message ----
>>> From: Erik de Mare <erik at oezie.org>
>>> To: Martin Knoblauch <spamtrap at knobisoft.de>
>>> Cc: rrd-users rrd-tool <rrd-users at lists.oetiker.ch>
>>> Sent: Wednesday, November 26, 2008 2:57:35 PM
>>> Subject: Re: [rrd-users] Automatic Timestamp in RRD graphs
>>>
>>>
>>> add something like COMMENT:`date`
>>>
>> OK, while this does not necessary satisfy my laziness, it seems to work kind of. So I add the following to my legend:
>>
>> " COMMENT:'\s' COMMENT:'\s' COMMENT:'$datestring'"
>>
>> where
>> "$datestring" has my desired timestamp. All is good so far, but the
>> string is left aligned. I would like to have it on the right lower
>> corner of my graph? I read about "\r", but it does not work.
> 
> this does generally work well, make sure though,
> 
> a) that \r actually reaches rrdtool and does not get eaten by some
>    intermediary step
> 
> b) try with a more recent version of rrdtool ... not sure about the
>    exact bug/feature set of 1.2.15.
> 
> cheers
> tobi


Tobi,

ok, I guess I wasn't precise enough. And I remebered it wrong (sorry Martin)
It doesn't seem possible to used left *and* right alignment in one line.

Example:
I'd like to add a timestamp in this graph rightbound in *the same line* with
the legend: see http://mail.ficos.de/rrdtool/test0.png

rrdtool graph $1 \
    --interlaced \
    --units-length=12 \
    --imgformat=PNG \
    --start=1227782280 \
    --end=1227783360 \
    --base=1000 \
    --width=600 \
    --height=100 \
    --upper-limit=100 \
    --lower-limit=0 \
    --rigid \
    --title="CPU stats" \
    DEF:iowait=Proc.rrd:iowait:AVERAGE \
    DEF:softrq=Proc.rrd:softrq:AVERAGE \
    DEF:irq=Proc.rrd:irq:AVERAGE \
    DEF:system=Proc.rrd:system:AVERAGE \
    DEF:nice=Proc.rrd:nice:AVERAGE \
    DEF:user=Proc.rrd:user:AVERAGE \
    DEF:idle=Proc.rrd:idle:AVERAGE \
    CDEF:ciowait=iowait,4,/ \
    CDEF:cirq=irq,4,/ \
    CDEF:csoftrq=softrq,4,/ \
    CDEF:csystem=system,4,/ \
    CDEF:cnice=nice,4,/ \
    CDEF:cuser=user,4,/ \
    CDEF:cidle=idle,4,/ \
    AREA:ciowait#f00000:iowait \
    AREA:cirq#808000:irq:STACK \
    AREA:csoftrq#803000:softrq:STACK \
    AREA:csystem#80f000:system:STACK \
    AREA:cnice#000030:nice:STACK \
    AREA:cuser#0000f0:user:STACK

So I added:
    "COMMENT:  Date\: $(date "+%F %T" | sed 's/:/\\:/g')\r"

which leads to: http://mail.ficos.de/rrdtool/test1.png
(entire line right bound)

If I now change the last line above to
    "AREA:cuser#0000f0:user\l:STACK" \

which leads to: http://mail.ficos.de/rrdtool/test2.png

So now the legend is left-bound and the timestamp is
right-bound, however, on two different lines ...

???

- Karl