How to enable the spring-boot application to print the logging directory while startup?, like below example:
logging directory - /home/test/studentapp.log
Irrespective of any logging framework we use like LOGBACK, Log4j2, Java Util logging ..e.t.c in Spring, want to print the logging directory while startup.
Is there any property needs to be configured at application.properties to enable this?
Edit:
For example, if I use the below logging logback.xml configuration, then I want to log the logging directory mentioned in the below configuration to the console at application startup, Like If you start kafka server It will give the location of the logging directories in the console at startup. In a similar way can we have this feature in spring?
<appender name="STUDENT_APP_LOG_APPENDER" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>/home/test/studentapp.log</file>
<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<pattern>[%d{ dd-MM-yyyy HH:mm:ss.SSS }] [ %5p ] [%thread] [ %logger ] %msg%n</pattern>
</encoder>
<rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
<fileNamePattern>/home/test/archived/studentapp-%d{dd-MM-yyyy HH:mm:ss}.%i.log</fileNamePattern>
<maxFileSize>100MB</maxFileSize>
<totalSizeCap>10GB</totalSizeCap>
<maxHistory>90</maxHistory>
</rollingPolicy>
</appender>
I'm rewriting a small DropWizard application to run on SpringBoot.
My DW app has the following logging config which works:
logging:
level: INFO
appenders:
- type: file
currentLogFilename: /var/log/paas/console.log
archivedLogFilenamePattern: /var/log/paas/console.log-%d.gz
archivedFileCount: 7
loggers:
com.myorg:
level: DEBUG
appenders:
- type: file
currentLogFilename: /var/log/paas/paas.log
archivedLogFilenamePattern: /var/log/paas/paas.log-%d.gz
archivedFileCount: 7
This config separates my application and console messages into two separate logs.
When I try using this same configuration with SpringBoot, it has no effect. I'm able to write everything to a single log with the following config, but I really need to have two separate logs:
logging:
level:
org.springframework.web: INFO
com.myorg: DEBUG
file: /var/log/paas/paas.log
Is it not possible to do this with LogBack and YAML? Or is there an alternate syntax that will give me the same result I'm getting for my DropWizard app?
Spring Boot's YAML configuration of Logback only allows a single file appender. In order to configure Logback to use multiple file appenders you'll have to provide an explicit logback.xml or logback-spring.xml. If you remove the logging confoguraiotn from your application.yaml file and then add either a logback.xml or a logback-spring.xml to the root of your runtime classpath then Logback will be configured from that file.
Here's an example, using a logback.xml:
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<appender name="INFO_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<!-- deny all events with a level below INFO, that is TRACE and DEBUG -->
<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
<level>INFO</level>
</filter>
<file>/var/log/paas/console.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>/var/log/paas/console.log-%d.gz</fileNamePattern>
<maxHistory>7</maxHistory>
</rollingPolicy>
<encoder>
<pattern>...</pattern>
</encoder>
</appender>
<appender name="DEBUG_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>/var/log/paas/paas.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>/var/log/paas/paas.log-%d.gz</fileNamePattern>
<maxHistory>7</maxHistory>
</rollingPolicy>
<encoder>
<pattern>...</pattern>
</encoder>
</appender>
<root level="INFO">
<appender-ref ref="INFO_FILE"/>
<appender-ref ref="DEBUG_FILE"/>
</root>
</configuration>
how do i enable spring framework logs in my application. ? i have used logback.xml in my application and set the root level to debug. When i am trying to run the app locally then logs are printed but the same is not happening when i am deploying the application in CF.
The application itself is crashing due to other reason but i hoped some initial spring boot framework logging should have happened.
Below is my logback.xml file. I am not sure the console appender mentioned there will work in CF system too or not.`
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<layout class="ch.qos.logback.classic.PatternLayout">
<Pattern>
%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg%n
</Pattern>
</layout>
</appender>
<root level="TRACE">
<appender-ref ref="STDOUT" />
</root>
</configuration>
Best Regards,
Saurav
May be this was a problem with the spring boot CF service broker application which was causing the logs to not be printed. Check here CF Spring boot app failed to start accepting connections
But then i deleted the application and redeployed again. It started printing logs. The above configuration works.
The above Logback configuration file should work. Note: TRACE level logging will produce a lot of log messages. It might be better to turn this down to INFO. You'll need to bundle this configuration file in src\main\resources\logback.xml in your Spring Boot app structure.
Application logs in PCF must be written to stdout or stderr by your app, and you can view them in the CLI using the command cf logs. The ConsoleAppender you're using above writes to stdout, so you should be good to go.
I am developing a spring boot application, where I am reading the logback configuration from a YML file which is in Consul . Following are the configuration I have used in the YML file.
logging:
file: ./logs/application.log
pattern:
console: "%d %-5level %logger : %msg%n"
file: "%d %-4relative [%thread] %-5level %logger{35} - %msg%n"
level:
org.springframework.web: ERROR
com.myapp.somepackage: DEBUG
appenders:
logFormat: "%d %-4relative [%thread] %-5level %logger{35} - %msg%n"
currentLogFilename: ./logs/application.log
archivedLogFilenamePattern: ./logs/application-%d{yyyy-MM-dd}-%i.log.gz
archivedFileCount: 7
timeZone: UTC
maxFileSize: 30KB
maxHistory: 30
Now the log files are generated, but the rolling appender is not working, any help on this, I am seraching for something similar like following when we perform rolling appender froma logback.xml file
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<!-- daily rollover. Make sure the path matches the one in the file element or else
the rollover logs are placed in the working directory. -->
<fileNamePattern>./logs/myapp/application_%d{yyyy-MM-dd}.%i.log</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>5MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<!-- keep 30 days' worth of history -->
<maxHistory>30</maxHistory>
</rollingPolicy>
The same I need to configure from a YML file
After a lot of search what I found is, this is not yet supported in spring boot. The options are only :
# LOGGING
logging.config= # Location of the logging configuration file. For instance `classpath:logback.xml` for Logback
logging.exception-conversion-word=%wEx # Conversion word used when logging exceptions.
logging.file= # Log file name. For instance `myapp.log`
logging.level.*= # Log levels severity mapping. For instance `logging.level.org.springframework=DEBUG`
logging.path= # Location of the log file. For instance `/var/log`
logging.pattern.console= # Appender pattern for output to the console. Only supported with the default logback setup.
logging.pattern.file= # Appender pattern for output to the file. Only supported with the default logback setup.
logging.pattern.level= # Appender pattern for log level (default %5p). Only supported with the default logback setup.
logging.register-shutdown-hook=false # Register a shutdown hook for the logging system when it is initialized.
So , dont waste your time on this for now. It will roll after 20MB , but the file name is like ${your_file_name}.log.1 etc. Spring should give support to give the rolling filename pattern to us. And also it is not an archived file.
I am using SpringBoot with LogBack and using the below configuration in my yml file:
logging:
path: C:/var/log/pincode
The logging.path Spring Environment Variable is transferred to the LOG_PATH Environment variable and the log file is placed at the correct place, but there is also a directory called LOG_PATH_IS_UNDEFINED created in the root directory of my project.
This seems to be caused by the different phase used by SpringBoot to configure LogBack with its Environment variables.
17:29:21,325 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
17:29:21,337 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy - Will use the pattern LOG_PATH_IS_UNDEFINED/catalina.out.%d{yyyy-MM-dd} for the active file
17:29:21,340 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - The date pattern is 'yyyy-MM-dd' from file name pattern 'LOG_PATH_IS_UNDEFINED/catalina.out.%d{yyyy-MM-dd}'.
17:29:21,340 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Roll-over at midnight.
17:29:21,343 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Setting initial period to Mon Aug 11 17:24:07 BRT 2014
17:29:21,346 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[serverConsole] - Active log file name: LOG_PATH_IS_UNDEFINED/catalina.out
17:29:21,346 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[serverConsole] - File property is set to [LOG_PATH_IS_UNDEFINED/catalina.out]
...
17:29:21,358 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
And then after that it start configuring logback again but this time using the path i set:
17:29:21,672 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
17:29:21,673 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy - No compression will be used
17:29:21,673 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy - Will use the pattern C:/var/log/pincode//catalina.out.%d{yyyy-MM-dd} for the active file
17:29:21,674 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - The date pattern is 'yyyy-MM-dd' from file name pattern 'C:/var/log/pincode//catalina.out.%d{yyyy-MM-dd}'.
17:29:21,674 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Roll-over at midnight.
17:29:21,674 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Setting initial period to Mon Aug 11 17:29:21 BRT 2014
17:29:21,674 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[serverConsole] - Active log file name: C:/var/log/pincode//catalina.out
17:29:21,674 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[serverConsole] - File property is set to [C:/var/log/pincode//catalina.out]
...
17:29:21,685 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
My logback.xml
<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true">
<include resource="org/springframework/boot/logging/logback/basic.xml" />
<property name="FILE_LOG_PATTERN"
value="%d{yyyy-MM-dd HH:mm:ss.SSS} %5p ${PID:- } [%t] --- %-40.40logger{39} : %m%n%wex" />
<appender name="serverConsole"
class="ch.qos.logback.core.rolling.RollingFileAppender">
<Append>true</Append>
<File>${LOG_PATH}/catalina.out</File>
<encoder>
<pattern>${FILE_LOG_PATTERN}</pattern>
</encoder>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${LOG_PATH}/catalina.out.%d{yyyy-MM-dd}
</fileNamePattern>
<maxHistory>15</maxHistory>
</rollingPolicy>
</appender>
<!-- Plain Text Rolling Appender -->
<appender name="server"
class="ch.qos.logback.core.rolling.RollingFileAppender">
<Append>true</Append>
<File>${LOG_PATH}/pincode.log</File>
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>INFO</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
<encoder>
<pattern>${FILE_LOG_PATTERN}</pattern>
</encoder>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${LOG_PATH}/pincode.log.%d{yyyy-MM-dd}
</fileNamePattern>
<maxHistory>15</maxHistory>
</rollingPolicy>
</appender>
<!-- Plain Text Rolling Appender -->
<appender name="server-error"
class="ch.qos.logback.core.rolling.RollingFileAppender">
<Append>true</Append>
<File>${LOG_PATH}/pincode-error.log</File>
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>ERROR</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
<encoder>
<pattern>${FILE_LOG_PATTERN}</pattern>
</encoder>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${LOG_PATH}/pincode-error.log.%d{yyyy-MM-dd}
</fileNamePattern>
<maxHistory>15</maxHistory>
</rollingPolicy>
</appender>
<logger name="com.app" level="INFO">
<appender-ref ref="server" />
<appender-ref ref="server-error" />
</logger>
<root level="INFO">
<appender-ref ref="serverConsole" />
</root>
If I remove my logback.xml file from the project it doesn't create the folder, so somewhere Spring is loading the xml before parsing the yml?
How can I avoid Logback to create this LOG_PATH_IS_UNDEFINED directory?
In your case LOG_PATH is not defined on startup. You should use ${LOG_PATH:-.} instead , See .
But if you define logging.path in your application.properties you will see two log files in . and in ${logging.path} directory.
Spring container set LOG_PATH after Logback initialization... Logback is not supported lazy file creation as far as I know. In this case you should use logback-spring.xml instead logback.xml.
I faced similar issue and its easy to solve it. Basically , concept is that Spring Boot already gives you System property - LOG_PATH for Spring Boot property - logging.path so you define logging.path in your application.properties and simply use LOG_PATH in your logback configuration - logback-spring.xml.
You shouldn't declare logback <property ...> for LOG_PATH , just use it whenever you want.
See at near bottom here
I encountered the same problem.
put an entry in logback.xml
<property resource="application.properties" />
In application.properties
FILE_LOG_PATTERN=###
LOG_FILE=###
when your application starts,the name of the directory created is what you have defined in the properties file.
Might not be your case but if you have bootstrap.properties make sure logging.path is defined there and only there.
if you're on Spring Boot Finchley (2.x), you can define spring.application.name in your application.properties or application.yml file and add the following in your Logback configuration:
<configuration>
<springProperty scope="context" name="springAppName" source="spring.application.name"/>
</configuration>
you will now have ${springAppName} as a variable at your disposal for your log pattern.
Before Spring Boot enviroment is prepared, the Spring Boot main class or the SpringApplication will initialize the loggerfactory, which will detect the default configuration file (logback.groovy, logback.xml, logback-test.xml), but at this time the Spring Boot application is not started yet, which means the variable LOG_PATH is not set. So at first you should alter the name of your logback config file and configure the file name manually in the Spring Boot config as logging.config. By this way the logback will configure a console appender by default instead of creating a file appender, and then when the Spring Boot enviroment is ready it will fire an enviromentready event, which causes a logback reconfig by LoggingApplicationListener. You can find the issue at springboot's page https://github.com/spring-projects/spring-boot/issues/2558
If you upgrade your Spring Boot version into pom.xml, make sure that your replaced
logging.path = your/log/path
by
logging.file.path = your/log/path
into application.properties. That was my case.
I encountered the same problem. I tried to define my own logback.xml and had trouble using the logging.path and logging.file properties defined in my application.properties file. Here is how I resolved (and worked around) the issues.
First, I learned that you cannot define both logging.path and logging.file properties. Since I'm using a RollingFileAppender that will produce multiple files over multiple days, I define logging.file, but use it more like a file prefix.
In application.properties
# Don't add the file type at the end. This will be added in logback.xml
logging.file=logs/my-app-name
In src/main/resources/logback.xml
<configuration>
<property name="FILE_LOG_PATTERN" value="%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n"/>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<Pattern>${FILE_LOG_PATTERN}</Pattern>
</encoder>
</appender>
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<encoder>
<Pattern>${FILE_LOG_PATTERN}</Pattern>
</encoder>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${LOG_FILE}.%d{yyyy-MM-dd}.log</fileNamePattern>
<maxHistory>30</maxHistory>
</rollingPolicy>
</appender>
<root level="INFO">
<appender-ref ref="STDOUT" />
<appender-ref ref="FILE" />
</root>
</configuration>
This seems to work for the most part. I defined my own FILE_LOG_PATTERN in the file, which I think is optional. The interesting part is the fileNamePattern. It correctly translates logging.file from my application.properties file into the variable LOG_FILE. The only real ugliness here is that on startup Logback still complains about the log file being undefined and creates an empty file called LOG_FILE_IS_UNDEFINED_XXX in the current directory. But the actual log file in my property is created and correctly appended to.
Andrew
somewhere Spring is loading the xml before parsing the yml
so just rename logback.xml to your-logback.xml and add logging.config=classpath:your-logback.xml in your application.properties
Do below to create dev/log directory only. Do not add log.path in application.properties
Add log.path=dev/logs in your bootstrap.properties.
Add below line in your logback-spring.xml.
<springProperty scope="context" name="LOG_PATH" source="log.path"/>
<property name="LOG_FILE" value="${LOG_PATH}/app/current"/>
Note
Make sure you include the below line only.
<include resource="org/springframework/boot/logging/logback/defaults.xml"/>
Do not use the below line else console logs will never be disabled and spring.log file will be created in temp directory(if you dont not provide logging.path in application.properties). The check the code of below file to know more.
<include resource="org/springframework/boot/logging/logback/base.xml"/>
put an entry in logback:
<property name="DEV_HOME" value="c:/application_logs/ps-web" />
and reference it:
<fileNamePattern>${DEV_HOME}.%d{yyyy-MM-dd}.log</fileNamePattern>
I had the same problem since I configured logging.path and logging.file on application.properties but some logs was produced before Spring Boot LogBack configuration and so they were written into LOG_PATH_IS_UNDEFINED/LOG_FILE_IS_UNDEFINED file and then the logs switched to the right location.
I found 2 possible solutions:
1) Configure logging.path and logging.file in bootstrap.properties since the configuration in bootstrap take place before
or
2) Set logging.path and logging.file as system properties with -Dlogging.path=... -Dlogging.file=... when launching the application
Based on Spring Boot common properties,
add the following into your application.yml
logging:
file:
path: logs/dev
if using application.properties, it should be
logging.file.path = logs/dev
Declare the property LOG_PATH in your logback.xml
<property name="LOG_PATH" value="" />
is where you must specify the directory where the log files are created. If this field is left empty, logback will create a new directory in the program execution. The name of the directory created is LOG_PATH_IS_UNDEFINED
Try adding the following to your POM file
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<filesets>
<fileset>
<directory>${basedir}/catalina.base_IS_UNDEFINED</directory>
<includes>
<include>**/*.log</include>
</includes>
<followSymlinks>false</followSymlinks>
</fileset>
</filesets>
</configuration>
</plugin>
To call an logback form an external path in a .yml file, it worked for me as:
logging:
config: C:/folder/logback.xml
I suppose you have included an error file.
Please change
<include resource="org/springframework/boot/logging/logback/basic.xml" />
to
<include resource="org/springframework/boot/logging/logback/base.xml"/>
then have a try.
version: 1.5.9
springcloud:
bootstrap.yml
spring:
application:
name: awesome-app
# profile:
# active: dev
logging:
path: /code/awesome-app
spring-logback.xml
${LOG_PATH}/awesome-app.log
springboot:
application.yml
spring:
application:
name: awesome-app
# profile:
# active: dev
logging:
path: /code/awesome-app
spring-logback.xml
${LOG_PATH}/awesome-app.log
custom-log-configuration:https://docs.spring.io/spring-boot/docs/1.5.6.RELEASE/reference/htmlsingle/#boot-features-custom-log-configuration
I was also having similar issue. I resolved it by renaming logback-spring.xml to logback-whatever.xml and added below in application.properties:
logging.config=classpath:logback-whatever.xml
Also, this issue comes when we use user defined properties for logging purposes such as:
log.path=logs
log.archive.path=archived
What worked for me:
having logback-spring.xml under resources folder (the same as yamls)
setting the environment variable in the application.yaml
after modifications, do a ./gradlew clean build
Happy new year everybody!
So, I've updated my spring boot to version (2.4.1) and I started getting the LOG_PATH_IS_UNDEFINED error.
I did a bit of research and I'm guessing there is a problem with the mapping of the properties from logging.path to LOG_PATH. (I manually debugged the logger and the properties were being load)
My solution/Patch:
I added a manual mapping to the logback-spring.xml at the very top:
<springProperty scope="context" name="LOG_PATH" source="logging.path"/>
Now it is working for me...