大家好，我是烤鸭：
场景是：
多个项目（配置文件相同）部署同一个服务器，部署的代码大部分相同。（具体原因是同一个项目的不同分支部署了两次）
启动之后，一直在报这个错误：
[WARN] [2019-05-13 11:05:53,200] doSaveProperties(189) | [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /root/.dubbo/dubbo-registry-etc_manage_web-172.17.33.68:2181.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.6.2, current host: 172.17.33.68
java.io.IOException: Can not lock the registry cache file /root/.dubbo/dubbo-registry-etc_manage_web-172.17.33.68:2181.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
at com.alibaba.dubbo.registry.support.AbstractRegistry.doSaveProperties(AbstractRegistry.java:161)
at com.alibaba.dubbo.registry.support.AbstractRegistry$SaveProperties.run(AbstractRegistry.java:500)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
[WARN] [2019-05-13 11:05:53,200] doSaveProperties(189) | [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /root/.dubbo/dubbo-registry-etc_manage_web-172.17.33.68:2181.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.6.2, current host: 172.17.33.68
java.io.IOException: Can not lock the registry cache file /root/.dubbo/dubbo-registry-etc_manage_web-172.17.33.68:2181.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
at com.alibaba.dubbo.registry.support.AbstractRegistry.doSaveProperties(AbstractRegistry.java:161)
at com.alibaba.dubbo.registry.support.AbstractRegistry$SaveProperties.run(AbstractRegistry.java:500)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
[WARN] [2019-05-13 11:05:53,201] doSaveProperties(189) | [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /root/.dubbo/dubbo-registry-etc_manage_web-172.17.33.68:2181.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.6.2, current host: 172.17.33.68
java.io.IOException: Can not lock the registry cache file /root/.dubbo/dubbo-registry-etc_manage_web-172.17.33.68:2181.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
at com.alibaba.dubbo.registry.support.AbstractRegistry.doSaveProperties(AbstractRegistry.java:161)
at com.alibaba.dubbo.registry.support.AbstractRegistry$SaveProperties.run(AbstractRegistry.java:500)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
解决办法：
改其中一个项目的 registry 的 file 属性
dubbo:
application:
id: xxx_test
name: xxx_test
registry:
address: zookeeper://localhost:2181
file: ${catalina:home}/dubbo-registry/dubbo-registry:properties
scan:
base-packages: com.test