logparser can not handle timestamp like 2018-04-11 10:04:20,859

[crazy-canux]

Bug report

Relevant telegraf.conf:

patterns = ['''%{TIMESTAMP_ISO8601:asctime:ts-"2006-01-02 15:04:05,000"} [%{DATA:name:string}] %{LOGLEVEL_PYTHON:levelname:string}: %{GREEDYDATA:message:string}''']

custom_patterns = '''
LOGLEVEL_PYTHON (?:WARNING|ERROR|CRITICAL)
'''

System info:

telegraf-1.6.0

ubuntu14.04

Steps to reproduce:

$ sudo service telegraf restart
$ echo 2018-04-11 10:04:20,859 [lib.test] ERROR: test test test >> test.log

Expected behavior:

parse log into output plugin.

Actual behavior:

2018-04-12T06:34:46Z E! Error parsing 2018-04-11 10:04:20,859 to time layout [2006-01-02 15:04:05]: parsing time "2018-04-11 10:04:20,859": extra text: ,859

2018-04-12T06:36:48Z E! Error parsing 2018-04-11 10:04:20,859 to time layout [2006-01-02 15:04:05,000]: parsing time "2018-04-11 10:04:20,859" as "2006-01-02 15:04:05,000": cannot parse "859" as ",000"

Additional info:

[Include gist of relevant config, logs, etc.]

when I use string instead of ts, it works.
But, how to handle the ",859" in telegraf?

[danielnelson]

We have an issue open for this #3571, unfortunately there is not a known workaround at this time.