thanks Karl, about #2
i am trying this:
1.rrdtool dump old.rrd tmp.xml
2.modify tmp.xml add HWPREDICT SEASONAL DEVSEASONAL DEVPREDICT FAILURES
default unkonwn
3.rrdtool restore tmp.xml new.rrd
if it works, i will response you as soon as possible.
于 2012年07月02日 23:20, Karl Fischer 写道:
> Am 02.07.2012 11:21, schrieb mozatkey:
>> hi,all:
>>
>> 1. How can I get the creating script if only having xxx.rrd ?
>> There are a lot of rrd files, i can't get all the creating script for
>> each one, because they have been modified many times by handle operation.
>>
>> 2.How can I set the HWPREDICT with those old rrd files?
>> These old rrds files don't set the HWPREDICT, but now i have to use it.
>>
>> 3. Is there any orders like: "show create rrd" and "alter xxx.rrd add
>> HWPREDICT" in rrdtool , just as what we did in pl/sql?
> can't answer #2, but as a "show create" I'm using a little bash script.
> On purpose it's bash only, no sed, no awk, no perl etc.
>
> It's not perfect (eg. doesn't support the HWPREDICT stuff etc.) but it
> works for my purpose. Feel free to add the missing functions ...
>
> it works like this:
>
> showcreate.sh /tmp/CPU.rrd
>
> rrdtool create "/tmp/CPU.rrd"
> --step 2
> DS:loadavg:GAUGE:120:0:1e+03
> DS:user:COUNTER:120:0:1e+02
> DS:nice:COUNTER:120:0:1e+02
> DS:system:COUNTER:120:0:1e+02
> DS:iowait:COUNTER:120:0:1e+02
> DS:irq:COUNTER:120:0:1e+02
> DS:softrq:COUNTER:120:0:1e+02
> RRA:AVERAGE:5e-01:2:345600
> RRA:AVERAGE:5e-01:30:576000
> RRA:AVERAGE:5e-01:300:157680
> RRA:AVERAGE:5e-01:1800:52560
>
>
> $ cat /usr/local/bin/showcreate.sh
>
> #!/bin/bash
>
> RRDTOOL=($(which rrdtool))
>
> function rrdinfo() {
> $RRDTOOL info $1 \
> | while read line; do
> key=${line%% = *}
> pri=${key%%[*}
> ind=${key%%]*}
> ind=${ind##*[}
> sub=${key##*.}
> value=${line##* = }
> num=${value/0000e/e}
> num=${num/0000e/e}
> num=${num/00e/e}
> num=${num/0e/e}
> num=${num/.e/e}
> num=${num/e+00/}
> num=${num/#NaN/U}
> case "$pri" in
> filename)
> echo "rrdtool create $value"
> ;;
> step)
> echo -e "\t--step $value"
> ;;
> ds)
> case "$sub" in
> value)
> echo -e "\tDS:$DS:$TYPE:$HB:$MIN:$MAX"
> ;;
> type)
> DS=$ind
> TYPE=${value//\"}
> case "$TYPE" in
> GAUGE|COUNTER|DERIVE|ABSOLUTE)
> # ok
> ;;
> *)
> echo "unknown data source type $TYPE"
> exit 1
> ;;
> esac
> ;;
> minimal_heartbeat)
> HB=$value
> ;;
> min)
> MIN=$num
> ;;
> max)
> MAX=$num
> ;;
> esac
> ;;
> rra)
> case "$sub" in
> unknown_datapoints)
> if [ -n "$CF" ]; then
> echo -e "\tRRA:$CF:$XFF:$PDPS:$ROWS"
> CF=""
> fi
> ;;
> cf)
> CF=${value//\"}
> case "$CF" in
> AVERAGE|MIN|MAX|LAST)
> # OK
> ;;
> *)
> echo "unknown consolidation $CF"
> exit 1
> ;;
> esac
> ;;
> xff)
> XFF=$num
> ;;
> pdp_per_row)
> PDPS=$num
> ;;
> rows)
> ROWS=$num
> ;;
> esac
> ;;
> esac
> done
> echo ""
> }
>
> while [ -n "$1" ]; do
> if [ -r $1 ]; then
> rrdinfo $1
> fi
> shift
> done
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