Hi,
Excuse my English:
1- When viewing the graph for the last 6 months, these cuts do not occur.
2- When you visualize the year, the problem that you attach image.
3- When you download the csv, it is effectively full of NAN
4- Annual chart properties:
/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start='1515503035' \
--end='1547039035' \
--title='22222' \
--rigid \
--base='1000' \
--height='120' \
--width='500' \
--alt-autoscale-max \
--lower-limit='0' \
COMMENT:"From 2018/01/09 10\:03\:55 To 2019/01/09 10\:03\:55\c" \
COMMENT:" \n" \
--vertical-label='bits per second' \
--slope-mode \
--font TITLE:9: \
--font AXIS:7: \
--font LEGEND:8: \
--font UNIT:7: \
DEF:a='/var/www/cacti/rra/204/5819.rrd':'traffic_in':AVERAGE \
DEF:b='/var/www/cacti/rra/204/5819.rrd':'traffic_out':AVERAGE \
CDEF:cdefa='a,8,*' \
CDEF:cdefe='b,8,*' \
AREA:cdefa#00CF00FF:'Inbound' \
GPRINT:cdefa:LAST:' Current\:%8.2lf %s' \
GPRINT:cdefa:AVERAGE:'Average\:%8.2lf %s' \
GPRINT:cdefa:MAX:'Maximum\:%8.2lf %s\n' \
LINE1:cdefe#002A97FF:'Outbound' \
GPRINT:cdefe:LAST:'Current\:%8.2lf %s' \
GPRINT:cdefe:AVERAGE:'Average\:%8.2lf %s' \
GPRINT:cdefe:MAX:'Maximum\:%8.2lf %s\n'
5- RRD INFO
[
[email protected] ~]# rrdtool info /var/www/cacti/rra/204/5819.rrd
filename = "/var/www/cacti/rra/204/5819.rrd"
rrd_version = "0003"
step = 60
last_update = 1547039284
header_size = 3496
ds[traffic_in].index = 0
ds[traffic_in].type = "COUNTER"
ds[traffic_in].minimal_heartbeat = 120
ds[traffic_in].min = 0,0000000000e+00
ds[traffic_in].max = 1,0000000000e+09
ds[traffic_in].last_ds = "78390982"
ds[traffic_in].value = 2,5388067797e+04
ds[traffic_in].unknown_sec = 0
ds[traffic_out].index = 1
ds[traffic_out].type = "COUNTER"
ds[traffic_out].minimal_heartbeat = 120
ds[traffic_out].min = 0,0000000000e+00
ds[traffic_out].max = 1,0000000000e+09
ds[traffic_out].last_ds = "2702336953"
ds[traffic_out].value = 3,2619864407e+04
ds[traffic_out].unknown_sec = 0
rra[0].cf = "AVERAGE"
rra[0].rows = 1095
rra[0].cur_row = 499
rra[0].pdp_per_row = 1440
rra[0].xff = 0,0000000000e+00
rra[0].cdp_prep[0].value = 2,9856981921e+04
rra[0].cdp_prep[0].unknown_datapoints = 0
rra[0].cdp_prep[1].value = 5,3944661723e+05
rra[0].cdp_prep[1].unknown_datapoints = 0
rra[1].cf = "AVERAGE"
rra[1].rows = 315360
rra[1].cur_row = 131077
rra[1].pdp_per_row = 5
rra[1].xff = 0,0000000000e+00
rra[1].cdp_prep[0].value = 1,1686666102e+04
rra[1].cdp_prep[0].unknown_datapoints = 0
rra[1].cdp_prep[1].value = 1,7924748305e+04
rra[1].cdp_prep[1].unknown_datapoints = 0
rra[2].cf = "AVERAGE"
rra[2].rows = 1576800
rra[2].cur_row = 969170
rra[2].pdp_per_row = 1
rra[2].xff = 0,0000000000e+00
rra[2].cdp_prep[0].value = NaN
rra[2].cdp_prep[0].unknown_datapoints = 0
rra[2].cdp_prep[1].value = NaN
rra[2].cdp_prep[1].unknown_datapoints = 0
rra[3].cf = "AVERAGE"
rra[3].rows = 78840
rra[3].cur_row = 62553
rra[3].pdp_per_row = 20
rra[3].xff = 0,0000000000e+00
rra[3].cdp_prep[0].value = 1,1889188418e+04
rra[3].cdp_prep[0].unknown_datapoints = 0
rra[3].cdp_prep[1].value = 2,9025178814e+04
rra[3].cdp_prep[1].unknown_datapoints = 0
rra[4].cf = "AVERAGE"
rra[4].rows = 26280
rra[4].cur_row = 11977
rra[4].pdp_per_row = 60
rra[4].xff = 0,0000000000e+00
rra[4].cdp_prep[0].value = 1,1889188418e+04
rra[4].cdp_prep[0].unknown_datapoints = 0
rra[4].cdp_prep[1].value = 2,9025178814e+04
rra[4].cdp_prep[1].unknown_datapoints = 0
rra[5].cf = "MAX"
rra[5].rows = 26280
rra[5].cur_row = 8365
rra[5].pdp_per_row = 60
rra[5].xff = 0,0000000000e+00
rra[5].cdp_prep[0].value = 6,0536002362e+03
rra[5].cdp_prep[0].unknown_datapoints = 0
rra[5].cdp_prep[1].value = 7,8699183801e+03
rra[5].cdp_prep[1].unknown_datapoints = 0
rra[6].cf = "MAX"
rra[6].rows = 1095
rra[6].cur_row = 46
rra[6].pdp_per_row = 1440
rra[6].xff = 0,0000000000e+00
rra[6].cdp_prep[0].value = 6,0536002362e+03
rra[6].cdp_prep[0].unknown_datapoints = 0
rra[6].cdp_prep[1].value = 7,8699183801e+03
rra[6].cdp_prep[1].unknown_datapoints = 0
rra[7].cf = "MAX"
rra[7].rows = 315360
rra[7].cur_row = 219482
rra[7].pdp_per_row = 5
rra[7].xff = 0,0000000000e+00
rra[7].cdp_prep[0].value = 6,0536002362e+03
rra[7].cdp_prep[0].unknown_datapoints = 0
rra[7].cdp_prep[1].value = 7,8699183801e+03
rra[7].cdp_prep[1].unknown_datapoints = 0
rra[8].cf = "MAX"
rra[8].rows = 1576800
rra[8].cur_row = 916094
rra[8].pdp_per_row = 1
rra[8].xff = 0,0000000000e+00
rra[8].cdp_prep[0].value = NaN
rra[8].cdp_prep[0].unknown_datapoints = 0
rra[8].cdp_prep[1].value = NaN
rra[8].cdp_prep[1].unknown_datapoints = 0
rra[9].cf = "MAX"
rra[9].rows = 78840
rra[9].cur_row = 61796
rra[9].pdp_per_row = 20
rra[9].xff = 0,0000000000e+00
rra[9].cdp_prep[0].value = 6,0536002362e+03
rra[9].cdp_prep[0].unknown_datapoints = 0
rra[9].cdp_prep[1].value = 7,8699183801e+03
rra[9].cdp_prep[1].unknown_datapoints = 0
Thanks all