CentOS 上 Java 日志优化实操指南
一 目标与总体思路
二 应用内日志优化
三 滚动与保留策略
<configuration>
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>logs/app.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>logs/app-%d{yyyy-MM-dd}.log</fileNamePattern>
<maxHistory>30</maxHistory>
</rollingPolicy>
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
</encoder>
</appender>
<root level="INFO">
<appender-ref ref="FILE"/>
</root>
</configuration>
<Configuration status="WARN">
<Appenders>
<RollingFile name="RollingFile" fileName="logs/app.log"
filePattern="logs/app-%d{yyyy-MM-dd}.log.gz">
<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss} [%t] %-5level %logger{36} - %msg%n"/>
<Policies>
<TimeBasedTriggeringPolicy interval="1" modulate="true"/>
<SizeBasedTriggeringPolicy size="10 MB"/>
</Policies>
<DefaultRolloverStrategy max="10"/>
</RollingFile>
</Appenders>
<Loggers>
<Root level="info"><AppenderRef ref="RollingFile"/></Root>
</Loggers>
</Configuration>
/path/to/your/java/logs/*.log {
daily
rotate 7
compress
missingok
notifempty
create 0644 root root
}
变更后执行:sudo systemctl reload logrotate 使其生效。四 集中化收集与监控告警
journalctl -u your-java-service --since "1 hour ago"。五 安全与维护实践