本文介绍解决java.io.FileNotFoundException: LOG_PATH_IS_UNDEFINED错误。

微服务在本地部署没有问题，部署在rancher中却报如下错误：
```
2021-10-18 17:10:47.886 ERROR [pip-data-lifecycle-management] [10.42.2.53:serverPort_IS_UNDEFINED] [main] o.s.boot.SpringApplication : Application run failed
java.lang.IllegalStateException: Logback configuration error detected:
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[INFO_FILE] - Failed to create parent directories for [/LOG_PATH_IS_UNDEFINED/info.log]
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[INFO_FILE] - openFile(LOG_PATH_IS_UNDEFINED/info.log,true) call failed. java.io.FileNotFoundException: LOG_PATH_IS_UNDEFINED/info.log (No such file or directory)
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[WARN_FILE] - Failed to create parent directories for [/LOG_PATH_IS_UNDEFINED/warn.log]
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[WARN_FILE] - openFile(LOG_PATH_IS_UNDEFINED/warn.log,true) call failed. java.io.FileNotFoundException: LOG_PATH_IS_UNDEFINED/warn.log (No such file or directory)
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[ERROR_FILE] - Failed to create parent directories for [/LOG_PATH_IS_UNDEFINED/error.log]
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[ERROR_FILE] - openFile(LOG_PATH_IS_UNDEFINED/error.log,true) call failed. java.io.FileNotFoundException: LOG_PATH_IS_UNDEFINED/error.log (No such file or directory)
	at org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java:166)
	at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithConventions(AbstractLoggingSystem.java:82)
	at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:60)
	at org.springframework.boot.logging.logback.LogbackLoggingSystem.initialize(LogbackLoggingSystem.java:114)
	at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:264)
	at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:237)
	at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:200)
	at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:173)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
	at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:74)
	at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54)
	at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:358)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:317)
	at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:137)
	at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:197)
	at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:104)
	at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:70)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
	at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:74)
	at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54)
	at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:358)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:317)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243)
	at cn.com.datu.DataLifecycleManagementApplication.main(DataLifecycleManagementApplication.java:29)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
	at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)
Exception in thread "main" java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
	at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)
```

很明显示是logback地址的问题，我本地读取的是spring cloud config本地配置，rancher读取的是spring cloud config在gitlab上的配置，我对比了其他服务的配置，其他rancher上正常的服务都在spring boot工程上bootstrap.yml配置了：
```
logging:
    path: /logs/${spring.application.name}
```
于是我也这样配置，以上错误就没有了。
那为什么我本地可以？原来这和spring cloud config本地配置与gitlab加载顺序有关。本地可以读取到我们的通用配置，后者顺序不一样。

ClassInstance

LOG_PATH_IS_UNDEFINED/info.log (No such file or directory)

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