Logback configuration issue - spring

Question

I'm using Spring Boot 2.3.2. I'm trying to configure logback to continue outputing to the console EXACTLY how it does today (ansi and all), plus mirror it to a log file in the exact same format (ansi and all). I want ALL the log files to be in the format of ${spring.application.name}.YYYY-MM-DD.log including the active one and I want to keep 7 days worth of files, so I've got it configured like this:
application.properties:
logging.file.name=${spring.application.name}
logging.file.path=/var/logs
logging.pattern.file=%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(%5p) %clr(${PID}){magenta} %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n%wEx
logback.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration>
<configuration>
<include resource="org/springframework/boot/logging/logback/defaults.xml" />
<include resource="org/springframework/boot/logging/logback/console-appender.xml" />
<timestamp key="byDate" datePattern="yyyy-MM-dd" />
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>${LOG_PATH}/${LOG_FILE}.${byDate}.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${LOG_PATH}/${LOG_FILE}.%d{yyyy-MM-dd}.log</fileNamePattern>
<maxHistory>7</maxHistory>
</rollingPolicy>
<encoder>
<pattern>${FILE_LOG_PATTERN}</pattern>
</encoder>
</appender>
<root level="INFO">
<appender-ref ref="CONSOLE" />
<appender-ref ref="FILE" />
</root>
</configuration>
This results in a collision error between file and fileNamePattern. I get what the error means and I can fix it by removing the date stamp from file, but there is no way to have all the files in a consistent format?
If I remove the timestamp from the active file, then it works except for the next issue...
The other issue that I have is that the logfile never gets written too until I shutdown the application.

Answer 1

This results in a collision error between file and fileNamePattern. I
get what the error means and I can fix it by removing the date stamp
from file, but there is no way to have all the files in a consistent
format?
Here :
<fileNamePattern>${LOG_PATH}/${LOG_FILE}.%d{yyyy-MM-dd}.log</fileNamePattern>
you don't have to specify ${LOG_PATH}. It is a filename pattern not a full path.
That should be that :
<fileNamePattern>${LOG_FILE}.%d{yyyy-MM-dd}.log</fileNamePattern>
The other issue that I have is that the logfile never gets written too
until I shutdown the application.
Not sure but it looks a file locking. Try to ensure that no process locks the file.
As an additional remark : you specified :
logging.file.name=${spring.application.name}
logging.file.path=/var/logs
But the spring boot logging doc specify to reference the one or the other :
you need to set a logging.file.name or logging.file.path property (for
example, in your application.properties).
Valuing logging.file.name such as the following respects better the documentation :
logging.file.name=/var/log/${spring.application.name}