问题
I have been trying to setup a proof of concept elasticsearch/kibana/logstash environment, but it is not working at the moment.
The LOGSTASH_HOME is:
c:\_work\issues\log4j_socketappender\logstash-5.0.1\
In the console log of logstash I found the following line:
Could not find log4j2 configuration at path /_work/issues/log4j_socketappender/logstash-5.0.1/config/log4j2.properties. Using default config which logs to console
You can see logstash is trying to look for log4j2.properties in the right location but it does not contain the "c:" part
I tried adding the path to the config\jvm.options
-Dlog4j.configurationFile=c:\_work\issues\log4j_socketappender\logstash-5.0.1\log4j2.properties
but it did not work.
回答1:
Eventually I fixed it by adding the following line into bin\setup.bat
42. SET JAVA_OPTS=%JAVA_OPTS% -Dlog4j.configurationFile=%LS_HOME%\config\log4j2.properties
回答2:
Two things come to mind:
Try specifying the full path with -Dlog4j.configurationFile=c:\_work\issues\log4j_socketappender\logstash-5.0.1\log4j2.properties
Also, is the properties file using the new Log4j2 properties syntax? An old log4j 1.2-style properties file will not work. (Although I would expect a different error message in that case.)
回答3:
as you can see here
create an Environment Variable in Windows LS_SETTINGS_DIR and set it to:
/c:/logstash-5.0.1/config
(notice - leading forward slash and all slashes are unix style not Windows style backslashes)
or to invoke logstash with
--path.settings=/c:/logstash-5.0.1/config/
(again note position and direction of slashes)
I hope that this helps someone avoid the Googling and testing I have just done!
来源：https://stackoverflow.com/questions/40676294/logstash-cannot-find-log4j2-properties-file