Logstash is not reading Json file

Elastic Stack Logstash
1

HI,

Logstash not giving any out put for Json input, my config as follows.

input {
file {
codec => json
type => "json"
path => "/path/*"
start_position => "beginning"
sincedb_path => "/dev/null"
ignore_older => 0
}
}
filter {
json {
source => "message"
}
}
output {
stdout{codec => rubydebug}
}

Logstash version - 2.4

Json file is as follows,

[{"target": "qns05_memory-buffered", "datapoints": [[null, 1489740180], [null, 1489740240], [null, 1489740300], [null, 1489740360], [null, 1489740420], [null, 1489740480], [null, 1489740540], [null, 1489740600], [null, 1489740660], [null, 1489740720], [null, 1489740780], [null, 1489740840], [null, 1489740900], [null, 1489740960], [null, 1489741020], [null, 1489741080], [null, 1489741140], [null, 1489741200], [null, 1489741260], [null, 1489741320], [null, 1489741380], [null, 1489741440], [null, 1489741500], [null, 1489741560], [null, 1489741620], [null, 1489741680], [null, 1489741740], [null, 1489741800], [null, 1489741860], [null, 1489741920], [null, 1489741980], [null, 1489742040], [null, 1489742100], [null, 1489742160], [null, 1489742220], [null, 1489742280], [null, 1489742340], [null, 1489742400], [null, 1489742460], [null, 1489742520], [null, 1489742580], [null, 1489742640], [null, 1489742700], [null, 1489742760], [null, 1489742820], [null, 1489742880], [null, 1489742940], [null, 1489743000], [null, 1489743060], [null, 1489743120], [null, 1489743180], [null, 1489743240], [null, 1489743300], [null, 1489743360], [null, 1489743420], [null, 1489743480], [null, 1489743540], [null, 1489743600], [null, 1489743660], [null, 1489743720], [null, 1489743780], [null, 1489743840], [null, 1489743900], [null, 1489743960], [null, 1489744020], [null, 1489744080], [null, 1489744140], [null, 1489744200], [null, 1489744260], [null, 1489744320], [null, 1489744380], [null, 1489744440], [null, 1489744500], [null, 1489744560], [null, 1489744620], [null, 1489744680], [null, 1489744740], [null, 1489744800], [null, 1489744860], [null, 1489744920], [null, 1489744980], [null, 1489745040], [null, 1489745100], [null, 1489745160], [null, 1489745220], [null, 1489745280], [null, 1489745340], [null, 1489745400], [null, 1489745460], [null, 1489745520], [null, 1489745580], [null, 1489745640], [null, 1489745700], [null, 1489745760], [null, 1489745820], [null, 1489745880], [null, 1489745940], [null, 1489746000], [null, 1489746060], [null, 1489746120], [null, 1489746180], [null, 1489746240], [null, 1489746300], [null, 1489746360], [null, 1489746420], [null, 1489746480], [null, 1489746540], [null, 1489746600], [null, 1489746660], [null, 1489746720], [null, 1489746780], [null, 1489746840], [null, 1489746900], [null, 1489746960], [null, 1489747020], [null, 1489747080], [null, 1489747140], [null, 1489747200], [null, 1489747260], [null, 1489747320], [null, 1489747380], [null, 1489747440], [null, 1489747500], [null, 1489747560], [null, 1489747620], [null, 1489747680], [null, 1489747740], [null, 1489747800], [null, 1489747860], [null, 1489747920], [null, 1489747980], [null, 1489748040], [null, 1489748100], [null, 1489748160], [null, 1489748220], [null, 1489748280], [null, 1489748340], [null, 1489748400], [null, 1489748460], [null, 1489748520], [null, 1489748580], [null, 1489748640], [null, 1489748700], [null, 1489748760], [null, 1489748820], [null, 1489748880], [null, 1489748940], [null, 1489749000], [null, 1489749060], [null, 1489749120], [null, 1489749180], [null, 1489749240], [null, 1489749300], [null, 1489749360], [null, 1489749420], [null, 1489749480], [null, 1489749540], [null, 1489749600], [null, 1489749660], [null, 1489749720]]}, {"target": "qns05_memory-cached", "datapoints": [[null, 1489740180], [null, 1489740240], [null, 1489740300], [null, 1489740360], [null, 1489740420], [null, 1489740480], [null, 1489740540], [null, 1489740600], [null, 1489740660], [null, 1489740720], [null, 1489740780], [null, 1489740840], [null, 1489740900], [null, 1489740960], [null, 1489741020], [null, 1489741080], [null, 1489741140], [null, 1489741200], [null, 1489741260], [null, 1489741320], [null, 1489741380], [null, 1489741440], [null, 1489741500], [null, 1489741560], [null, 1489741620], [null, 1489741680], [null, 1489741740], [null, 1489741800], [null, 1489741860], [null, 1489741920], [null, 1489741980], [null, 1489742040], [null, 1489742100], [null, 1489742160], [null, 1489742220], [null, 1489742280], [null, 1489742340], [null, 1489742400], [null, 1489742460], [null, 1489742520], [null, 1489742580], [null, 1489742640], [null, 1489742700], [null, 1489742760], [null, 1489742820], [null, 1489742880], [null, 1489742940], [null, 1489743000], [null, 1489743060], [null, 1489743120], [null, 1489743180], [null, 1489743240], [null, 1489743300], [null, 1489743360], [null, 1489743420], [null, 1489743480], [null, 1489743540], [null, 1489743600], [null, 1489743660], [null, 1489743720], [null, 1489743780], [null, 1489743840], [null, 1489743900], [null, 1489743960], [null, 1489744020], [null, 1489744080], [null, 1489744140], [null, 1489744200], [null, 1489744260], [null, 1489744320], [null, 1489744380], [null, 1489744440], [null, 1489744500], [null, 1489744560], [null, 1489744620], [null, 1489744680], [null, 1489744740], [null, 1489744800], [null, 1489744860], [null, 1489744920], [null, 1489744980], [null, 1489745040], [null, 1489745100], [null, 1489745160], [null, 1489745220], [null, 1489745280], [null, 1489745340], [null, 1489745400], [null, 1489745460], [null, 1489745520], [null, 1489745580], [null, 1489745640], [null, 1489745700], [null, 1489745760], [null, 1489745820], [null, 1489745880], [null, 1489745940], [null, 1489746000], [null, 1489746060], [null, 1489746120], [null, 1489746180], [null, 1489746240], [null, 1489746300], [null, 1489746360], [null, 1489746420], [null, 1489746480], [null, 1489746540], [null, 1489746600], [null, 1489746660], [null, 1489746720], [null, 1489746780], [null, 1489746840], [null, 1489746900], [null, 1489746960], [null, 1489747020], [null, 1489747080], [null, 1489747140], [null, 1489747200], [null, 1489747260], [null, 1489747320], [null, 1489747380], [null, 1489747440], [null, 1489747500], [null, 1489747560], [null, 1489747620], [null, 1489747680], [null, 1489747740], [null, 1489747800], [null, 1489747860], [null, 1489747920], [null, 1489747980], [null, 1489748040], [null, 1489748100], [null, 1489748160], [null, 1489748220], [null, 1489748280], [null, 1489748340], [null, 1489748400], [null, 1489748460], [null, 1489748520], [null, 1489748580], [null, 1489748640], [null, 1489748700], [null, 1489748760], [null, 1489748820], [null, 1489748880], [null, 1489748940], [null, 1489749000], [null, 1489749060], [null, 1489749120], [null, 1489749180], [null, 1489749240], [null, 1489749300], [null, 1489749360], [null, 1489749420], [null, 1489749480], [null, 1489749540], [null, 1489749600], [null, 1489749660], [null, 1489749720]]}]

Please help with this

Thanks,
Uday.K

2

Does the input file end with a newline character?

You should get useful clues if you bump Logstash's logging level. One possible cause could be a typo in the filename pattern or a permissions issue.

3

Hi Magnus,

Thanks for your reply, after adding newline to files able to read the files.

Thanks,
Uday.K

4

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