logback日志文件位置动态指定

logback相关装备，其间${LOG_HOME}表明为环境变量，在java发动应用程序时，经过java-DLOG_HOME=”途径”来指定的，能够动态去设置它的地址。

xmlversion=”1.0″encoding=”UTF-8″?><configuration><propertyname=”logPath”value=”${LOG_HOME-/home}/logs”/><appendername=”consoleLog”class=”ch.qos.logback.core.ConsoleAppender”><layoutclass=”ch.qos.logback.classic.PatternLayout”><pattern>%d-%msg%npattern>layout>appender><appendername=”fileInfoLog”class=”ch.qos.logback.core.rolling.RollingFileAppender”><filterclass=”ch.qos.logback.classic.filter.LevelFilter”><level>ERRORlevel><onMatch>DENYonMatch><onMismatch>ACCEPTonMismatch>filter><encoder><pattern>%d{yyyy-MM-ddHH:mm:ss.SSS}%10logger[%thread]:%msg%npattern>encoder><rollingPolicyclass=”ch.qos.logback.core.rolling.TimeBasedRollingPolicy”><fileNamePattern>${logPath}/info.%d.logfileNamePattern><maxHistory>7maxHistory>rollingPolicy>appender><appendername=”fileErrorLog”class=”ch.qos.logback.core.rolling.RollingFileAppender”><filterclass=”ch.qos.logback.classic.filter.ThresholdFilter”><level>ERRORlevel>filter><encoder><pattern>%d{yyyy-MM-ddHH:mm:ss.SSS}%10logger[%thread]:%msg%npattern>encoder><rollingPolicyclass=”ch.qos.logback.core.rolling.TimeBasedRollingPolicy”><fileNamePattern>${logPath}/error.%d.logfileNamePattern><maxHistory>7maxHistory>rollingPolicy>appender><rootlevel=”info”><appender-refref=”consoleLog”/><appender-refref=”fileInfoLog”/><appender-refref=”fileErrorLog”/>root>configuration>

上面代码中${LOG_HOME-/home}/logs表明，如果没有传入环境变量LOG_HOME，然后就使用后面的/home途径，对于windows体系来说，/home表明当时jar包地点的盘符。
项目发动
java-Dlogback_home=”c:\logs”-jareureka.jar
这样就把日志文件存储到了C盘logs目录了。
docker容器时指定
dockerrun-d-p7070:7070-m200M-eJAVA_OPTIONS=’-Dlogback_home=”/deployments/’eurekaserver