mtail is not working in centos 6

[gnanaseka-gajendiran]

Running mtail like below

/tmp/weblog_exporter/mtail -port=13904 -progs=/tmp/weblog_exporter/apache_combined.mtail -logs=/usr/local/apache/vhosts/*/logs/*access*log.[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9] -logtostderr &

mtail version

./mtail --version
mtail version 3.0.0-rc52 git revision 6c1f19c1f95ccf1afe2708e41d188bd656db3aa1 go version go1.20.5 go arch amd64 go os linux

/tmp/weblog_exporter/apache_combined.mtail

# Copyright 2015 Ben Kochie <[email protected]>. All Rights Reserved.
# This file is available under the Apache license.

# Parser for the common apache "NCSA extended/combined" log format
# LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\"
counter apache_http_requests_total by request_method, http_version, request_status
counter apache_http_bytes_total by request_method, http_version, request_status

/^/ +
/(?P<hostname>[0-9A-Za-z\.:-]+) / + # %h
/(?P<remote_logname>[0-9A-Za-z-]+) / + # %l
/(?P<remote_username>[0-9A-Za-z-]+) / + # %u
/\[(?P<timestamp>\d{2}\/\w{3}\/\d{4}:\d{2}:\d{2}:\d{2} (\+|-)\d{4})\] / + # %t
/"(?P<request_method>[A-Z]+) (?P<URI>\S+) (?P<http_version>HTTP\/[0-9\.]+)" / + # \"%r\"
/(?P<request_status>\d{3}) / + # %>s
/((?P<response_size>\d+)|-) / + # %b
/"(?P<referer>\S+)" / + # \"%{Referer}i\"
/"(?P<user_agent>[[:print:]]+)"/ + # \"%{User-agent}i\"
/$/ {
  strptime($timestamp, "02/Jan/2006:15:04:05 -0700") # for tests

  apache_http_requests_total[$request_method][$http_version][$request_status]++
  $response_size > 0 {
      apache_http_bytes_total[$request_method][$http_version][$request_status] += $response_size
  }
}

Logs

I0801 20:25:53.401653   20497 store.go:189] Starting metric store expiry loop every 1h0m0s
I0801 20:25:53.404956   20497 checker.go:254] capture group reference `10' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.404996   20497 checker.go:254] capture group reference `referer' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.405004   20497 checker.go:254] capture group reference `hostname' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.405011   20497 checker.go:254] capture group reference `URI' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.405016   20497 checker.go:254] capture group reference `remote_username' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.405022   20497 checker.go:254] capture group reference `remote_username' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.405028   20497 checker.go:254] capture group reference `5' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.405034   20497 checker.go:254] capture group reference `remote_logname' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.405046   20497 checker.go:254] capture group reference `remote_logname' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.405057   20497 checker.go:254] capture group reference `URI' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.405065   20497 checker.go:254] capture group reference `referer' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.405071   20497 checker.go:254] capture group reference `hostname' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.405077   20497 checker.go:254] capture group reference `user_agent' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.405082   20497 checker.go:254] capture group reference `user_agent' at apache_combined.mtail:9:1-3 appears to be unused
I0801 20:25:53.405321   20497 runtime.go:187] Loaded program apache_combined.mtail
I0801 20:25:53.405957   20497 logstream.go:61] Parsed url as /logs/ssl_access_log.20230801
I0801 20:25:53.406212   20497 tail.go:287] Tailing /logs/ssl_access_log.20230801
I0801 20:25:53.406237   20497 logstream.go:61] Parsed url as /logs/access_log.20230801
I0801 20:25:53.406353   20497 tail.go:287] Tailing /logs/access_log.20230801
I0801 20:25:53.406394   20497 logstream.go:61] Parsed url as /logs/ssl_access_log.20230801
I0801 20:25:53.406464   20497 tail.go:287] Tailing /logs/ssl_access_log.20230801
I0801 20:25:53.406649   20497 mtail.go:136] Listening on 0.0.0.0:13904

my log format

xxx.67.92.xxx - - [01/Aug/2023:17:43:06 +0900] "GET /api/v2/auth/systems HTTP/1.1" 200 448 "http://localhost:1080/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/115.0" - 88301 api.xyz.co

I don't see any error or metrics

[jaqx0r]

Please follow the testing https://github.com/google/mtail/blob/main/docs/Testing.md and troubleshooting https://github.com/google/mtail/blob/main/docs/Troubleshooting.md guides and report back with more information please.