我已经使用rest api对hadoop集群进行服务检查。在Ambari GUI中,我可以看到请求被触发但API只返回到json输出以下。
" HREF" :" http://:8080 / api / v1 / clusters / DEMO / requests / 11","请求" :{" id" :11,"状态" :"接受"
此输出与运行服务检查状态(通过/失败)无关,只有请求ID更改。
如何解释,从上面的json输出运行服务检查结果?
答案 0 :(得分:0)
使用REST API发出服务检查请求后,ambari会接受运行,并立即给出json响应(在完成服务检查之前)。因此响应json指示请求id,请求的当前状态和监视请求状态的URL。
{
"href" : "http://localhost:8080/api/v1/clusters/DEMO/requests/182",
"Requests" : {
"id" : 182,
"status" : "Accepted"
}
您可以使用json响应中返回的URL监视服务检查状态。示例如下,注意"request_status" : "FAILED"
表示服务检查是成功完成还是失败。
$ curl -u admin:admin -XGET http://localhost:8080/api/v1/clusters/DEMO/requests/182
{
"href" : "http://localhost:8080/api/v1/clusters/DEMO/requests/182",
"Requests" : {
"aborted_task_count" : 0,
"cluster_name" : "DEMO",
"completed_task_count" : 1,
"create_time" : 1505153613045,
"end_time" : 1505153724897,
"exclusive" : false,
"failed_task_count" : 1,
"id" : 182,
"inputs" : "{}",
"operation_level" : null,
"progress_percent" : 100.0,
"queued_task_count" : 0,
"request_context" : "HDFS Service Check",
"request_schedule" : null,
"request_status" : "FAILED",
"resource_filters" : [
{
"service_name" : "HDFS"
}
],
"start_time" : 1505153613139,
"task_count" : 1,
"timed_out_task_count" : 0,
"type" : "COMMAND"
},
"stages" : [
{
"href" : "http://localhost:8080/api/v1/clusters/DEMO/requests/182/stages/0",
"Stage" : {
"cluster_name" : "DEMO",
"request_id" : 182,
"stage_id" : 0
}
}
],
"tasks" : [
{
"href" : "http://localhost:8080/api/v1/clusters/DEMO/requests/182/tasks/1314",
"Tasks" : {
"cluster_name" : "DEMO",
"id" : 1314,
"request_id" : 182,
"stage_id" : 0
}
}
]
}