记docker-compose运行quartz job 出现 "Couldn't get host name!" 的问题

在部署分布式项目quartz-job模块中，启动时候报出以下错误：

org.quartz.SchedulerException: Couldn't get host name!         at org.quartz.simpl.SimpleInstanceIdGenerator.generateInstanceId(SimpleInstanceIdGenerator.java:36)         at org.quartz.impl.StdSchedulerFactory.instantiate(StdSchedulerFactory.java:1247)         at org.quartz.impl.StdSchedulerFactory.getScheduler(StdSchedulerFactory.java:1579)         at org.springframework.scheduling.quartz.SchedulerFactoryBean.createScheduler(SchedulerFactoryBean.java:677)         at org.springframework.scheduling.quartz.SchedulerFactoryBean.prepareScheduler(SchedulerFactoryBean.java:614)         at org.springframework.scheduling.quartz.SchedulerFactoryBean.afterPropertiesSet(SchedulerFactoryBean.java:502)         at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863)         at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800)         at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620)         at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)         at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)         at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)         at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)         at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)         at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)         at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380)         at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300)         at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:656)         at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:639)  

Caused by: java.lang.IllegalStateException: Cannot run without an instance id.         at org.quartz.impl.StdSchedulerFactory.instantiate(StdSchedulerFactory.java:1251)         at org.quartz.impl.StdSchedulerFactory.getScheduler(StdSchedulerFactory.java:1579)         at org.springframework.scheduling.quartz.SchedulerFactoryBean.createScheduler(SchedulerFactoryBean.java:677)         at org.springframework.scheduling.quartz.SchedulerFactoryBean.prepareScheduler(SchedulerFactoryBean.java:614)         at org.springframework.scheduling.quartz.SchedulerFactoryBean.afterPropertiesSet(SchedulerFactoryBean.java:502)         at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863)         at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800)  

原因：

在docker-compose.yml中配置容器网络模式为“host”

network_mode: host 

解决：

1.配置 /etc/hosts 设置一下当前主机的名称(即 hostname)

 127.0.0.1   localhost   localhost.localdomain   your-hostname 

2.去掉 network_mode: host 采用默认模式