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A system log management tool with automatically generated log templates.

Project description

PyPI release Python support BSD 3-Clause License Travis CI

Amulog is a tool to support system log management. The main function is to classify log messages with automatically generated log templates (formats and variable locations), and to store the data in a database. This system works on python3.

Main features

  • Support multiple databases: sqlite and mysql
  • Smart log segmentation with log2seq
  • Multiple template generation algorithms such as: Drain, SHISO, LenMa, FT-tree, Dlog, etc.
  • Support Online (incremental) and Offline (hindsight) use
  • Suspend and resume the template generation process
  • Import and Export log templates if you need
  • Edit log templates manually if you need
  • Search API with datetime, hostname and log template IDs



$ pip install amulog

Generate config

For the first step, save following config as test.conf on an empty directory.

src_path = logfile.txt
src_recur = false
logging = auto.log

database = sqlite3
sqlite3_filename = log.db

lt_methods = drain
indata_filename = ltgen.dump

Then modify general.src_path option to a logfile you want to load. (If you want to use multiple files, change general.src_recur into true and specify directory name to general.src_path.)

Generate database

Try following command to generate database:

$ python -m amulog db-make -c test.conf

Check database

$ python -m amulog show-db-info -c test.conf

shows status of the generated database.

$ python -m amulog show-lt -c test.conf

shows all generated log templates in the given logfile.

$ python -m amulog show-log -c test.conf ltid=2

shows all log messages corresponding to log template ID 2.

Resume generating database

Try following command to resume generating database:

$ python -m amulog db-add -c test.conf logfile2.txt

Export and Import templates

Following command exports all log templates in the database:

$ python3 -m amulog show-db-import -c test.conf > exported_tpl.txt

You can modify the exported templates manually. Note that some special letters (\\, @, *) are escaped in the exported templates.

To import the templates, save following config as test2.conf.

src_path = logfile.txt
src_recur = false
logging = new_auto.log

database = sqlite3
sqlite3_filename = new_log.db

lt_methods = import
indata_filename = new_ltgen.dump

def_path = exported_tpl.txt

Then, try generating database again:

python -m amulog db-make -c test2.conf

Further usage

see help with following command:

python -m amulog -h


This tool is demonstrated at CNSM2020 and International Journal of Network Management (now on early access).

If you use this code, please consider citing:

  author = {Kobayashi, Satoru and Yamashiro, Yuya and Otomo, Kazuki and Fukuda, Kensuke},
  booktitle = {Proceedings of the 16th International Conference on Network and Service Management (CNSM'20)},
  title = {amulog: A General Log Analysis Framework for Diverse Template Generation Methods},
  year = {2020}

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