I'm try to providing logs from log4j2 to Spring boot actuator. Unfortunately, i achieved only how to change log level for ROOT logger. Maybe someone know how to connect actuators with log4j2?
2 Answers
I found solution in another way. No matter how you config log4j2, because spring boot admin in /logging actuator read log file. Consequently, i must write path to this file.
It works only if you have logback, spring write to file in path
application.yml
...
logging:
path: ./path/to/file
...
Finally i found solution for log4j2:
application.yml
...
endpoints:
logfile:
external-file: logs/custom.log
...
It's works only if you rid off logging.* properties
Found it in this one answer
This link might help.
A simple log4j2 configuration can look like the following:
<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout
pattern="%style{%d{ISO8601}}{black} %highlight{%-5level }[%style{%t}{bright,blue}] %style{%C{1.}}{bright,yellow}: %msg%n%throwable" />
</Console>
<RollingFile name="RollingFile"
fileName="./logs/spring-boot-logger-log4j2.log"
filePattern="./logs/$${date:yyyy-MM}/spring-boot-logger-log4j2-%d{-dd-MMMM-yyyy}-%i.log.gz">
<PatternLayout>
<pattern>%d %p %C{1.} [%t] %m%n</pattern>
</PatternLayout>
<Policies>
<!-- rollover on startup, daily and when the file reaches 10 MegaBytes-->
<OnStartupTriggeringPolicy />
<SizeBasedTriggeringPolicy size="10 MB" />
<TimeBasedTriggeringPolicy />
</Policies>
</RollingFile>
</Appenders>
<Loggers>
<!-- LOG everything at INFO level -->
<Root level="info">
<AppenderRef ref="Console" />
<AppenderRef ref="RollingFile" />
</Root>
<!-- LOG "com.example*" at TRACE level -->
<Logger name="com.example" level="trace"></Logger>
</Loggers>
</Configuration>
If you are using such a file only the Loggers defined in the -tag will be shown at the actuator endpoint. So if you want to see more Loggers, you have to add them in this file.
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