hadoop - 使用 ambari 删除服务时出错

Question

我正在尝试删除未能正确安装的服务，以便我可以尝试重新安装它。

我在 ambari UI 中找不到任何删除选项，因此我尝试使用 API 进行删除。但是，我遇到了一条错误消息:

curl -u admin:admin -H 'X-Requested-By:ambari' -X DELETE \
     'http://localhost:8080/api/v1/clusters/BI4_QSE/services/SPARK'
{
  "status" : 500,
  "message" : "org.apache.ambari.server.controller.spi.SystemException: 
               An internal system exception occurred: Cannot remove SPARK.             
               Desired state STARTED is not removable.  
               Service must be stopped or disabled."
}

我使用的是 IBM Open Platform v4 的 docker 化版本，即 IOP_v4000_20150.zip

ambari 版本是:

[root@rvm /]# ambari-server --version
1.7.0_IBM

下面是 GET 命令的输出:

curl -u admin:admin -H 'X-Requested-By:ambari' -X GET \
     'http://localhost:8080/api/v1/clusters/BI4_QSE/services/SPARK'
{
  "href" : "http://localhost:8080/api/v1/clusters/BI4_QSE/services/SPARK",
  "ServiceInfo" : {
    "cluster_name" : "BI4_QSE",
    "maintenance_state" : "OFF",
    "service_name" : "SPARK",
    "state" : "INSTALLED"
  },
  "components" : [
    {
      "href" : "http://localhost:8080/api/v1/clusters/BI4_QSE/services/SPARK/components/SPARK_CLIENT",
      "ServiceComponentInfo" : {
        "cluster_name" : "BI4_QSE",
        "component_name" : "SPARK_CLIENT",
        "service_name" : "SPARK"
      }
    },
    {
      "href" : "http://localhost:8080/api/v1/clusters/BI4_QSE/services/SPARK/components/SPARK_JOBHISTORYSERVER",
      "ServiceComponentInfo" : {
        "cluster_name" : "BI4_QSE",
        "component_name" : "SPARK_JOBHISTORYSERVER",
        "service_name" : "SPARK"
      }
    },
    {
      "href" : "http://localhost:8080/api/v1/clusters/BI4_QSE/services/SPARK/components/SPARK_THRIFTSERVER",
      "ServiceComponentInfo" : {
        "cluster_name" : "BI4_QSE",
        "component_name" : "SPARK_THRIFTSERVER",
        "service_name" : "SPARK"
      }
    }
  ]
}

问题:如何删除并重新安装spark？

Answer 1

您应该能够运行以下命令序列来停止并删除 SPARK。

以下命令会将状态设置为已安装，也就是确保其未运行。

curl -i -H "X-Requested-By: ambari" -u admin:admin -X PUT \
     -d '{"RequestInfo":{"context":"Stop Service"},"Body":{"ServiceInfo":{"state":"INSTALLED"}}}' \
     http://localhost:8080/api/v1/clusters/BI4_QSE/services/SPARK

接下来的几个命令将确保每个组件都停止。

 curl -i -H "X-Requested-By: ambari" -u admin:admin -X PUT \
      -d '{"RequestInfo":{"context":"Stop All Components"},"Body":{"ServiceComponentInfo":{"state":"INSTALLED"}}}' \
      http://localhost:8080/api/v1/clusters/BI4_QSE/services/SPARK/components/SPARK_THRIFTSERVER

 curl -i -H "X-Requested-By: ambari" -u admin:admin -X PUT \
      -d '{"RequestInfo":{"context":"Stop All Components"},"Body":{"ServiceComponentInfo":{"state":"INSTALLED"}}}' \
      http://localhost:8080/api/v1/clusters/BI4_QSE/services/SPARK/components/SPARK_JOBHISTORYSERVER

最后您可以通过执行以下命令来删除该服务:

 curl -i -H "X-Requested-By: ambari" -u admin:admin -X DELETE \ 
      http://localhost:8080/api/v1/clusters/BI4_QSE/services/SPARK

然后您可以使用 Ambari UI 中的“添加服务”向导重新安装 SPARK。