{
  "activity_groups": [
    {
      "name": "backup",
      "context_id": "backup-1379661944638904113-1650046",
      "status": "FINISHED",
      "severity": 0,
      "rule": ["backup:start", "backup:finish"],
      "application_id": "1372813089205701281",
      "concept_id": "",
      "target_id": "1379661944638904113",
      "activities": [
        {
          "type": "Event",
          "name": "backup:start",
          "display_name": "backup:start",
          "catalog": "backup",
          "severity": 0,
          "activity_id": "e7f5e802-ce5f-456d-89c7-326b2364693e",
          "application_id": "1372813089205701281",
          "concept_id": "",
          "target_id": "1379661944638904113",
          "calibration_time": 1673444295,
          "source": "user_behavior",
          "author": "",
          "context_id": "backup-1379661944638904113-1650046",
          "context": null,
          "payload": {
            "CorrelatedIssue": "",
            "_": 1672333210,
            "cluster-id": 1379661944638904113,
            "error": "",
            "id": 1650046,
            "region": "APAC",
            "size": "0B",
            "status": "running",
            "summary": "Staring auto backup(1650046) task",
            "tenant-id": 1372813089205701281,
            "type": "auto"
          }
        },
        {
          "type": "Event",
          "name": "backup:finish",
          "display_name": "backup:finish",
          "catalog": "backup",
          "severity": 0,
          "activity_id": "a56517f4-1925-490a-a2bd-6b684201f6ee",
          "application_id": "1372813089205701281",
          "concept_id": "",
          "target_id": "1379661944638904113",
          "calibration_time": 1673464295,
          "source": "user_behavior",
          "author": "",
          "context_id": "backup-1379661944638904113-1650046",
          "context": null,
          "payload": {
            "CorrelatedIssue": "",
            "_": 1672333210,
            "cluster-id": 1379661944638904113,
            "error": "",
            "id": 1650046,
            "region": "APAC",
            "size": "2TB",
            "status": "success",
            "summary": "auto backup finished(1650046) task",
            "tenant-id": 1372813089205701281,
            "type": "auto"
          }
        }
      ],
      "timeout": 0
    },
    {
      "name": "oom",
      "context_id": "6621e877-7aec-4cef-880f-c71414cc5da2",
      "status": "",
      "severity": 4,
      "rule": null,
      "application_id": "1372813089198981282",
      "concept_id": "1372813089196881283",
      "target_id": "1379661944629574082",
      "activities": [
        {
          "type": "Event",
          "name": "oom",
          "display_name": "OOM",
          "catalog": "oom",
          "severity": 4,
          "activity_id": "6621e877-7aec-4cef-880f-c71414cc5da2",
          "application_id": "1372813089198981282",
          "concept_id": "1372813089196881283",
          "target_id": "1379661944629574082",
          "calibration_time": 1673484295,
          "source": "compute-engine",
          "author": "oom-detector",
          "context_id": "6621e877-7aec-4cef-880f-c71414cc5da2",
          "context": null,
          "payload": {
            "cluster_id": "1379661944629574082",
            "details": {
              "bucket": "diagnostics-activities-prod",
              "key": "oom_detector/6621e877-7aec-4cef-880f-c71414cc5da2.json",
              "type": "s3"
            },
            "detect_time": 1673484538,
            "instance": "db-tidb-1",
            "occurrence_time": 1673484295,
            "summary": "db-tidb-1 of cluster 1379661944629574082: an OOM occurred."
          }
        },
        {
          "type": "Action",
          "name": "oom analysis",
          "display_name": "OOM Analysis",
          "catalog": "oom",
          "severity": -4,
          "activity_id": "99c53ca6-d327-485d-b1f5-9c48b2f6b966",
          "application_id": "1372813089198981282",
          "concept_id": "1372813089196881283",
          "target_id": "1379661944629574082",
          "calibration_time": 1673484540,
          "source": "compute-engine",
          "author": "oom-analyzer",
          "context_id": "6621e877-7aec-4cef-880f-c71414cc5da2",
          "context": null,
          "payload": {
            "analyze_time": 1673484540,
            "cluster_id": "1379661944629574082",
            "details": {
              "bucket": "diagnostics-activities-prod",
              "key": "oom_analyzer/99c53ca6-d327-485d-b1f5-9c48b2f6b966.json",
              "type": "s3"
            },
            "detect_time": 1673484538,
            "instance": "db-tidb-1",
            "occurrence_time": 1673484295,
            "summary": "At 2023-01-12 00:44:55+00:00, cluster 1379661944629574082 - instance db-tidb-1 was restarted due to OOM."
          }
        }
      ],
      "timeout": 0
    },
    {
      "name": "oom",
      "context_id": "d833f0aa-8d06-4c37-a03d-6c11f3ae165b",
      "status": "",
      "severity": 4,
      "rule": null,
      "application_id": "1372813089198981282",
      "concept_id": "1372813089196881283",
      "target_id": "1379661944629574082",
      "activities": [
        {
          "type": "Event",
          "name": "oom",
          "display_name": "OOM",
          "catalog": "oom",
          "severity": 4,
          "activity_id": "d833f0aa-8d06-4c37-a03d-6c11f3ae165b",
          "application_id": "1372813089198981282",
          "concept_id": "1372813089196881283",
          "target_id": "1379661944629574082",
          "calibration_time": 1673484265,
          "source": "compute-engine",
          "author": "oom-detector",
          "context_id": "d833f0aa-8d06-4c37-a03d-6c11f3ae165b",
          "context": null,
          "payload": {
            "cluster_id": "1379661944629574082",
            "details": {
              "bucket": "diagnostics-activities-prod",
              "key": "oom_detector/d833f0aa-8d06-4c37-a03d-6c11f3ae165b.json",
              "type": "s3"
            },
            "detect_time": 1673484364,
            "instance": "db-tidb-0",
            "occurrence_time": 1673484265,
            "summary": "db-tidb-0 of cluster 1379661944629574082: an OOM occurred."
          }
        },
        {
          "type": "Action",
          "name": "oom analysis",
          "display_name": "OOM Analysis",
          "catalog": "oom",
          "severity": -4,
          "activity_id": "1f437055-2cd8-4e7d-be25-c41e139d7ab2",
          "application_id": "1372813089198981282",
          "concept_id": "1372813089196881283",
          "target_id": "1379661944629574082",
          "calibration_time": 1673484368,
          "source": "compute-engine",
          "author": "oom-analyzer",
          "context_id": "d833f0aa-8d06-4c37-a03d-6c11f3ae165b",
          "context": null,
          "payload": {
            "analyze_time": 1673484368,
            "cluster_id": "1379661944629574082",
            "details": {
              "bucket": "diagnostics-activities-prod",
              "key": "oom_analyzer/1f437055-2cd8-4e7d-be25-c41e139d7ab2.json",
              "type": "s3"
            },
            "detect_time": 1673484364,
            "instance": "db-tidb-0",
            "occurrence_time": 1673484265,
            "summary": "At 2023-01-12 00:44:25+00:00, cluster 1379661944629574082 - instance db-tidb-0 was restarted due to OOM."
          }
        }
      ],
      "timeout": 0
    }
  ]
}