Ambari中Assign Slaves and Clients点不了next

问题描述

1. 上一步Confirm Hosts 增加的节点状态都为success
2. 无论选不选择安装的组件，都点不了next
3. 查看ambari-server 日志
   
4. 显示如下错误

03 九月 2019 16:05:10,283 ERROR [ambari-client-thread-31] BaseManagementHandler:61 - Caught a system exception while attempting to create a resource: Error occured during stack advisor command invocation: Cannot create /var/run/ambari-server/stack-recommendations
org.apache.ambari.server.controller.spi.SystemException: Error occured during stack advisor command invocation: Cannot create /var/run/ambari-server/stack-recommendations
	at org.apache.ambari.server.controller.internal.ValidationResourceProvider.createResources(ValidationResourceProvider.java:91)
	at org.apache.ambari.server.controller.internal.ClusterControllerImpl.createResources(ClusterControllerImpl.java:298)
	at org.apache.ambari.server.api.services.persistence.PersistenceManagerImpl.create(PersistenceManagerImpl.java:97)
	at org.apache.ambari.server.api.handlers.CreateHandler.persist(CreateHandler.java:37)
	at org.apache.ambari.server.api.handlers.BaseManagementHandler.handleRequest(BaseManagementHandler.java:73)
	at org.apache.ambari.server.api.services.BaseRequest.process(BaseRequest.java:144)
	at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseService.java:126)
	at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseService.java:90)
	at org.apache.ambari.server.api.services.ValidationService.getValidation(ValidationService.java:58)

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解决办法
主节点上操作
chmod 777 /var/run/ambari-server