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hamsterrrrr
hamsterrrrr
Gold ⭐️
February 17, 2022
Solved

can't get critical alerts from a dashboard

Hello!
I'm using CM api v19
I'm trying to get only critical alerts which I'm looking at right now (RED ones).
image001.png
Tried https://cloudera.github.io/cm_api/apidocs/v19/path__events.html

 

 

/api/v19/events?query=category==HEALTH_EVENT;severity=CRITICAL

 

 

 The output consists of too many not relevant events. What should I do to get only critical events displayed on the dashboard?
Thank you.

hamsterrrrr
hamsterrrrrAnswer
Gold ⭐️
February 22, 2022

Thank you! Looks like what I wanted.

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5 replies

araujo
Platinum ⭐️⭐️⭐️
araujo
Platinum ⭐️⭐️⭐️
February 17, 2022

Hi, @hamsterrrrr ,

 

Those events represent the point-in-time occurrence when the alert was thrown. They don't tell you the current issues with the cluster, which is what you see in the UI.

I don't think the REST API has an endpoint that gives you that list directly, but it's pretty easy to find out.

 

In the results of the /clusters/{cluster}/services endpoint, look for services with the status = BAD or health checks with summary = BAD. For example:

{
  "items": [
    {
      "name": "impala",
      "type": "IMPALA",
      "healthSummary": "BAD",                 <<--- this
      "healthChecks": [
        ...
        {
          "name": "IMPALA_IMPALADS_HEALTHY",
          "summary": "BAD",                   <<--- or this
          "suppressed": false
        },
        ...
      ],
      ...
    }
  ]
}

 

Cheers,

André

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    hamsterrrrr
    hamsterrrrrAuthor
    Gold ⭐️
    February 18, 2022

    Hello, André
    Thanky you for yoir quick reply.
    So you are saying that by using api there is no way to find out what exactly is going on with claster? All we can get is just summary like GOOD\BAD of each service? And based on this we should conduct the further investigation by means of GUI?

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    hamsterrrrr
    hamsterrrrrAuthor
    Gold ⭐️
    February 18, 2022

    I'm saying that because the command you are talking about says that overall state of the service HDFS is good, all components of it are GOOD, while in the GUI I still can see one red red Bad health Data DIrectory  Status bad health event, while overall status of HDFS is shown as GOOD(green).
    Long story short, I just want to get this event via API call. Is that possible?

    overall service state is good, but there is a critical eventoverall service state is good, but there is a critical eventthis critical eventthis critical event

    clusters/cluster/services/hdfs'|jq .

    {

      "name": "hdfs",

      "type": "HDFS",

      "clusterRef": {

        "clusterName": "cluster"

      },

      "serviceUrl,

      "roleInstancesUrl":,

      "serviceState": "STARTED",

      "healthSummary": "GOOD",

      "healthChecks": [

        {

          "name": "HDFS_BLOCKS_WITH_CORRUPT_REPLICAS",

          "summary": "GOOD",

          "suppressed": false

        },

        {

          "name": "HDFS_CANARY_HEALTH",

          "summary": "GOOD",

          "suppressed": false

        },

        {

          "name": "HDFS_DATA_NODES_HEALTHY",

          "summary": "GOOD",

          "suppressed": false

        },

        {

          "name": "HDFS_FAILOVER_CONTROLLERS_HEALTHY",

          "summary": "GOOD",

          "suppressed": false

        },

        {

          "name": "HDFS_FREE_SPACE_REMAINING",

          "summary": "GOOD",

          "suppressed": false

        },

        {

          "name": "HDFS_HA_NAMENODE_HEALTH",

          "summary": "GOOD",

          "suppressed": false

        },

        {

          "name": "HDFS_MISSING_BLOCKS",

          "summary": "GOOD",

          "suppressed": false

        },

        {

          "name": "HDFS_UNDER_REPLICATED_BLOCKS",

          "summary": "GOOD",

          "suppressed": false

        }

      ],

      "configStalenessStatus": "FRESH",

      "clientConfigStalenessStatus": "FRESH",

      "maintenanceMode": false,

      "maintenanceOwners": [],

      "displayName": "HDFS",

      "entityStatus": "GOOD_HEALTH"

    }


     

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