> ## Documentation Index
> Fetch the complete documentation index at: https://kb.vastdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Validate Data Engine Upgrade

> Run pre-upgrade validations for the data engine. Returns whether the upgrade is allowed and details of any failed validations. Currently validates linked kube cluster version compatibility.

## OpenAPI

````json GET /data-engine/validate-upgrade
{
  "openapi": "3.0.3",
  "info": {
    "title": "VAST DataEngine API",
    "description": "Combined OpenAPI specification for Document360: Provisioning, Telemetries Query, Telemetries Collector, and shared common components.",
    "version": "1.4.0"
  },
  "servers": [
    {
      "url": "http://localhost:3000",
      "description": "Provisioning Service (Local development server)"
    },
    {
      "url": "http://localhost:8080/query_telemetries",
      "description": "Telemetries Query Service (Local development server)"
    },
    {
      "url": "http://localhost:8080/telemetries",
      "description": "Telemetries Collector Service (Local development server)"
    }
  ],
  "tags": [
    {
      "name": "Provisioning Service v1.4.0",
      "description": "Provisioning Service API"
    },
    {
      "name": "Provisioning Service v1.4.0 > dataEngine",
      "description": "Data Engine lifecycle"
    },
    {
      "name": "Provisioning Service v1.4.0 > setup_provisioning",
      "description": "Deprecated provisioning setup"
    },
    {
      "name": "Provisioning Service v1.4.0 > pipelines",
      "description": "Pipelines"
    },
    {
      "name": "Provisioning Service v1.4.0 > pipelineRevisions",
      "description": "Pipeline revisions"
    },
    {
      "name": "Provisioning Service v1.4.0 > functions",
      "description": "Functions"
    },
    {
      "name": "Provisioning Service v1.4.0 > functionRevisions",
      "description": "Function revisions"
    },
    {
      "name": "Provisioning Service v1.4.0 > functionRevisionsDeprecated",
      "description": "Deprecated function revision endpoints"
    },
    {
      "name": "Provisioning Service v1.4.0 > triggers",
      "description": "Triggers"
    },
    {
      "name": "Provisioning Service v1.4.0 > topics",
      "description": "Topics"
    },
    {
      "name": "Provisioning Service v1.4.0 > containerRegistries",
      "description": "Container registries"
    },
    {
      "name": "Provisioning Service v1.4.0 > kubernetesClusters",
      "description": "Kubernetes clusters"
    },
    {
      "name": "Provisioning Service v1.4.0 > kubernetesSecrets",
      "description": "Kubernetes secrets"
    },
    {
      "name": "Provisioning Service v1.4.0 > mtlsAuthenticationCredentials",
      "description": "mTLS authentication credentials"
    },
    {
      "name": "Provisioning Service v1.4.0 > dashboard",
      "description": "Dashboard"
    },
    {
      "name": "Provisioning Service v1.4.0 > reports",
      "description": "Saved reports"
    },
    {
      "name": "Telemetries Collector Service v1.4.0",
      "description": "API for collecting OTEL signals (traces, logs and metrics)"
    },
    {
      "name": "Telemetries Collector Service v1.4.0 > collect_telemetries",
      "description": "Collect OTEL signals"
    },
    {
      "name": "Telemetries Query Service v1.4.0",
      "description": "API for querying traces, logs and metrics"
    },
    {
      "name": "Telemetries Query Service v1.4.0 > query_telemetries",
      "description": "Query traces and logs"
    },
    {
      "name": "Telemetries Query Service v1.4.0 > metrics",
      "description": "Query metrics"
    },
    {
      "name": "Telemetries Query Service v1.4.0 > reports",
      "description": "Saved reports"
    }
  ],
  "paths": {
    "/data-engine/validate-upgrade": {
      "get": {
        "summary": "Validate Data Engine Upgrade",
        "description": "Run pre-upgrade validations for the data engine. Returns whether the upgrade is allowed and details of any failed validations. Currently validates linked kube cluster version compatibility.",
        "operationId": "validate_upgrade",
        "tags": [
          "Provisioning Service v1.4.0 > dataEngine"
        ],
        "parameters": [
          {
            "name": "target_version",
            "in": "query",
            "required": "true",
            "schema": {
              "type": "string"
            },
            "description": "Target upgrade version (e.g. 5.6.0)"
          }
        ],
        "responses": {
          "200": {
            "description": "Upgrade validation result",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/UpgradeValidationResponse"
                }
              }
            }
          },
          "401": {
            "$ref": "#/components/responses/UnauthorizedError"
          },
          "500": {
            "$ref": "#/components/responses/InternalServerError"
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "UpgradeValidationResponse": {
        "type": "object",
        "properties": {
          "allowed": {
            "type": "boolean",
            "description": "Whether the upgrade is allowed (true if all validations passed)"
          },
          "validations": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/UpgradeValidationCheck"
            },
            "description": "List of validation checks that were performed"
          }
        }
      },
      "UpgradeValidationCheck": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string",
            "description": "Name of the validation check"
          },
          "passed": {
            "type": "boolean",
            "description": "Whether this validation passed"
          },
          "message": {
            "type": "string",
            "nullable": "true",
            "description": "Human-readable message explaining the failure, or null if passed"
          },
          "details": {
            "type": "array",
            "items": {
              "type": "object",
              "additionalProperties": "true"
            },
            "description": "Validation-specific details. Each validation defines its own detail fields."
          }
        }
      },
      "ErrorResponse": {
        "type": "object",
        "properties": {
          "detail": {
            "type": "string"
          },
          "source": {
            "$ref": "#/components/schemas/ErrorSource"
          },
          "code": {
            "type": "string",
            "description": "Optional machine-readable error code for clients to branch on instead of parsing `detail`."
          }
        }
      },
      "ErrorSource": {
        "type": "object",
        "description": "Represents the underlying problem that made Data Engine raise the error",
        "properties": {
          "source_type": {
            "type": "string",
            "description": "The component where the error happened",
            "example": "kubernetes | vms | vdb | registry"
          },
          "source_name": {
            "type": "string",
            "description": "The name of the source compoenent",
            "example": "my-cluster"
          },
          "inner_error": {
            "type": "string",
            "description": "The error message from the source component",
            "example": "Failed to connect to the cluster"
          }
        }
      }
    },
    "responses": {
      "UnauthorizedError": {
        "description": "Unauthorized",
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ErrorResponse"
            }
          }
        }
      },
      "InternalServerError": {
        "description": "Internal Server Error",
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ErrorResponse"
            }
          }
        }
      }
    }
  }
}
````