Hallo zusammen,
ist schon eine ganze weile her, dass ich mit tobis rrdtool etwas gemacht
habe, und bin wohl etwas eingerostet. Ich versuche aktuell die
Festplattenaktivitäten aufzuzeichnen, mit folgendem Script (wird von
cron jede Minute aufgerufen):
1 | #!/usr/bin/env bash
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2 | path=/var/lib/rrd/disk_io
|
3 | drivestat=$(iostat -o JSON)
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4 | timestamp=$(date +%s)
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5 |
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6 | echo ${drivestat} | jq -c '.[].hosts.[]' | while read -r node; do
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7 | nodename=$(echo ${node} | jq -r .nodename)
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8 | echo ${node} | jq -c '.statistics.[].disk.[]' | while read -r drive; do
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9 | name=$(echo ${drive} | jq -r .disk_device)
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10 | filename=${path}/${nodename}_${name}.rrd
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11 | kb_read=$(echo ${drive} | jq -r .kB_read)
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12 | kb_wrtn=$(echo ${drive} | jq -r .kB_wrtn)
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13 | if [ ! -f filename ]; then
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14 | rrdcreate ${filename} \
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15 | --step=60s \
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16 | DS:read:GAUGE:90s:0:U \
|
17 | DS:wrtn:GAUGE:90s:0:U \
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18 | RRA:AVERAGE:0.5:60s:14d \
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19 | RRA:MIN:0.5:60s:14d \
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20 | RRA:MAX:0.5:60s:14d \
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21 | RRA:AVERAGE:0.5:300s:62d \
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22 | RRA:MIN:0.5:300s:62d \
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23 | RRA:MAX:0.5:300s:62d \
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24 | RRA:AVERAGE:0.5:1h:366d \
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25 | RRA:MIN:0.5:1h:366d \
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26 | RRA:MAX:0.5:1h:366d \
|
27 | RRA:AVERAGE:0.5:1d:3660d \
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28 | RRA:MIN:0.5:1d:3660d \
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29 | RRA:MAX:0.5:1d:3660d
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30 | fi
|
31 | rrdupdate ${filename} ${timestamp}:$((${kb_read}*1024)):$((${kb_wrtn}*1024))
|
32 | done
|
33 | done
|
Die Daten kommen auch in der rrd Datenbank an (siehe ds[read].last_ds
und ds[wrtn].last_ds:
1 | $ rrdtool info /var/lib/rrd/disk_io/server_sda.rrd
|
2 | filename = "/var/lib/rrd/disk_io/server_sda.rrd"
|
3 | rrd_version = "0003"
|
4 | step = 60
|
5 | last_update = 1731588631
|
6 | header_size = 4064
|
7 | ds[read].index = 0
|
8 | ds[read].type = "GAUGE"
|
9 | ds[read].minimal_heartbeat = 90
|
10 | ds[read].min = 0.0000000000e+00
|
11 | ds[read].max = NaN
|
12 | ds[read].last_ds = "12205752320"
|
13 | ds[read].value = 1.2205752320e+11
|
14 | ds[read].unknown_sec = 21
|
15 | ds[wrtn].index = 1
|
16 | ds[wrtn].type = "GAUGE"
|
17 | ds[wrtn].minimal_heartbeat = 90
|
18 | ds[wrtn].min = 0.0000000000e+00
|
19 | ds[wrtn].max = NaN
|
20 | ds[wrtn].last_ds = "13989277696"
|
21 | ds[wrtn].value = 1.3989277696e+11
|
22 | ds[wrtn].unknown_sec = 21
|
23 | rra[0].cf = "AVERAGE"
|
24 | rra[0].rows = 20160
|
25 | rra[0].cur_row = 14188
|
26 | rra[0].pdp_per_row = 1
|
27 | rra[0].xff = 5.0000000000e-01
|
28 | rra[0].cdp_prep[0].value = NaN
|
29 | rra[0].cdp_prep[0].unknown_datapoints = 0
|
30 | rra[0].cdp_prep[1].value = NaN
|
31 | rra[0].cdp_prep[1].unknown_datapoints = 0
|
32 | rra[1].cf = "MIN"
|
33 | rra[1].rows = 20160
|
34 | rra[1].cur_row = 1277
|
35 | rra[1].pdp_per_row = 1
|
36 | rra[1].xff = 5.0000000000e-01
|
37 | rra[1].cdp_prep[0].value = NaN
|
38 | rra[1].cdp_prep[0].unknown_datapoints = 0
|
39 | rra[1].cdp_prep[1].value = NaN
|
40 | rra[1].cdp_prep[1].unknown_datapoints = 0
|
41 | [...]
|
Allerdings kann ich keine Daten daraus fetchen:
1 | $ rrdtool fetch /var/lib/rrd/disk_io/server_sda.rrd AVERAGE -s -10m
|
2 | read wrtn
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3 |
|
4 | 1731588540: -nan -nan
|
5 | 1731588600: -nan -nan
|
6 | 1731588660: -nan -nan
|
7 | 1731588720: -nan -nan
|
8 | 1731588780: -nan -nan
|
9 | 1731588840: -nan -nan
|
10 | 1731588900: -nan -nan
|
11 | 1731588960: -nan -nan
|
12 | 1731589020: -nan -nan
|
13 | 1731589080: -nan -nan
|
14 | 1731589140: -nan -nan
|
Kann mir da mal jemdand auf die Sprünge helfen?
Danke, Edi
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