java Spring boot - 备份日志文件的数量限制为 7
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Spring boot - number of backup log files restricted to 7
提问by Ravindra Devadiga
In our spring-bootproject we are using slf4jfor logging purpose. Below are configuration which we have added in application.propertiesfile
在我们的spring-boot项目中，我们使用slf4j进行日志记录。下面是我们在application.properties文件中添加的配置
logging.file=/opt/logs/my_log.log
logging.level.org.springframework.web=INFO
logging.level.org.hibernate=INFO
logging.level.nl.yestelecom.boss=DEBUG
logging.level.com.github.isrsal.logging.LoggingFilter=DEBUG
It generates only 7 backup files(my_log.log.1, my_log.log.2 ..., my_log.log.7) with each file of size 10.5MBand after that logging is not happening at all.
它只生成 7 个备份文件（my_log.log.1、my_log.log.2 ...、my_log.log.7），每个文件大小为10.5MB，之后日志记录根本不发生。
Is there any way to change this behavior?
有什么办法可以改变这种行为吗？
We looked into available properties of spring-boot but, didn't find anything. Any suggestion is appreciated.
我们查看了 spring-boot 的可用属性，但没有找到任何东西。任何建议表示赞赏。
回答by DeepakV
Spring-Bootonly allows limited properties to be configured in its application.properties. See the list here.
Spring-Boot只允许在其 application.properties 中配置有限的属性。请参阅此处的列表。
The default (out-of-the-box) configuration that Spring-boot uses is defined in base.xml. See base.xml config herewhich includes this File appender
Spring-boot 使用的默认（开箱即用）配置在 base.xml 中定义。请参阅此处的 base.xml 配置，其中包含此文件附加程序
There are 2 ways to add extra configuration
有两种方法可以添加额外的配置
- Add logback-spring.xml
- 添加 logback-spring.xml
If there is a logback configuration XML with name logback-spring.xml in project's classpath, it is picked up by Spring-Boot on initialization.
如果在项目的类路径中有一个名为 logback-spring.xml 的 logback 配置 XML，它会在初始化时被 Spring-Boot 选中。
- Point to config file from application.properties
- 从 application.properties 指向配置文件
Within application.properties use following to point to your custom logback XML
在 application.properties 中使用以下指向您的自定义 logback XML
logging.config= # Location of the logging configuration file. For instance `classpath:logback.xml` for Logback
Once you add the extra config using any of the above 2 steps, the rollover strategy can be mentioned within that custom XML like this
使用上述 2 个步骤中的任何一个添加额外的配置后，可以在该自定义 XML 中提及翻转策略，如下所示
<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true">
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<charset>UTF-8</charset>
<Pattern>%d %-4relative [%thread] %-5level %logger{35} - %msg%n</Pattern>
</encoder>
</appender>
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<encoder>
<pattern>${FILE_LOG_PATTERN}</pattern>
</encoder>
<file>${LOG_FILE}</file>
<rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
<fileNamePattern>${LOG_FILE}.%i</fileNamePattern>
<minIndex>1</minIndex>
<maxIndex>10</maxIndex>
</rollingPolicy>
<triggeringPolicy
class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
<MaxFileSize>10MB</MaxFileSize>
</triggeringPolicy>
</appender>
<root level="DEBUG">
<appender-ref ref="CONSOLE" />
<appender-ref ref="FILE"/>
</root>
</configuration>
回答by Kozio?ek
SFL4J is just wrapper. You need to add extra configuration for logback library:
SFL4J 只是包装器。您需要为 logback 库添加额外的配置：
<configuration>
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>logFile.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<!-- daily rollover -->
<fileNamePattern>logFile.%d{yyyy-MM-dd}.log</fileNamePattern>
<!-- keep 30 days' worth of history capped at 3GB total size -->
<maxHistory>30</maxHistory>
<totalSizeCap>3GB</totalSizeCap>
</rollingPolicy>
<encoder>
<pattern>%-4relative [%thread] %-5level %logger{35} - %msg%n</pattern>
</encoder>
</appender>
<root level="DEBUG">
<appender-ref ref="FILE" />
</root>
</configuration>
In this case we have logs from last 30 days but not bigger than 3GB.
在这种情况下，我们有过去 30 天的日志，但不超过 3GB。
回答by Frischling
for spring-boot 2.0.0:
对于 spring-boot 2.0.0：
- logging.file.max-history
- logging.file.max-size
- logging.file.max-history
- logging.file.max-size
...and others
Either look at org.springframework.boot.logging.LoggingSystemPropertiesor
https://docs.spring.io/spring-boot/docs/2.0.5.RELEASE/reference/html/boot-features-logging.html#boot-features-logging-file-output
...和其他人要么看看org.springframework.boot.logging.LoggingSystemProperties要么
https://docs.spring.io/spring-boot/docs/2.0.5.RELEASE/reference/html/boot-features-logging.html#boot-features-logging-file -输出
