> ## Documentation Index > Fetch the complete documentation index at: https://artie.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Change a Managed Kafka cluster's instance type > Moves every broker of an active Managed Kafka cluster to another EC2 instance type and applies it. The brokers restart one at a time onto new machines, so clients keep working; each broker's memory and CPU follow the new type. The type the brokers already run is left as it is. Returns 409 while any change to the cluster is still being applied. Company admins only. ## OpenAPI ````yaml https://raw.githubusercontent.com/artie-labs/artie-api-spec/refs/heads/master/openapi.yaml put /kafka-clusters/{uuid}/instance-type openapi: 3.1.0 info: description: External API endpoints for Artie title: Artie API version: v1.0.200 servers: - url: https://api.artie.com security: - ApiKey: [] paths: /kafka-clusters/{uuid}/instance-type: put: tags: - Kafka clusters summary: Change a Managed Kafka cluster's instance type description: >- Moves every broker of an active Managed Kafka cluster to another EC2 instance type and applies it. The brokers restart one at a time onto new machines, so clients keep working; each broker's memory and CPU follow the new type. The type the brokers already run is left as it is. Returns 409 while any change to the cluster is still being applied. Company admins only. operationId: kafka_cluster_instance_type_update parameters: - in: path name: uuid required: true schema: type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/RouterUpdateKafkaClusterInstanceTypeRequest' required: true responses: '200': content: application/json: schema: $ref: '#/components/schemas/PayloadsKafkaCluster' description: OK '400': description: Bad Request '404': description: Not Found '409': description: Conflict '500': description: Internal Server Error '503': description: Service Unavailable components: schemas: RouterUpdateKafkaClusterInstanceTypeRequest: properties: instanceType: $ref: '#/components/schemas/PayloadsKafkaInstanceType' description: >- EC2 instance type for every broker. The brokers restart one at a time onto the new machines. The type they already run is left as it is. required: - instanceType type: object PayloadsKafkaCluster: properties: cloud: type: string createdAt: format: date-time type: string dataKeptUntil: description: >- When a deleted Managed Kafka cluster's data is deleted for good. It can be restored until then. Only set while status is deleted. format: date-time type: string deployStage: $ref: '#/components/schemas/EnumsKafkaDeployStage' description: >- The step a Managed Kafka cluster's deploy is on. Only set while status is deploying, or failed, where it is the step the deploy stopped at. disableTLS: type: boolean externalBootstrapURL: type: string isManaged: description: >- Whether this is a Managed Kafka cluster that Artie runs for the company. type: boolean localRetentionBytes: description: >- Disk cap per partition: the most broker disk each partition of the cluster's tiered topics keeps, in bytes (log.local.retention.bytes). Missing when there is no cap. type: - 'null' - integer localRetentionMS: description: >- Days on disk: how long the cluster's tiered topics keep data on broker disks, in ms (log.local.retention.ms). Missing on clusters made before it, whose brokers use Kafka's default. type: - 'null' - integer managed: $ref: '#/components/schemas/PayloadsKafkaClusterManaged' description: >- A Managed Kafka cluster's configuration. Only set when isManaged, and only by Get a Kafka cluster. name: type: string region: type: string shuttingDown: description: >- Whether a deleted Managed Kafka cluster is still being taken down. It can't be restored until that finishes. Only set in the clusters list. type: boolean status: $ref: '#/components/schemas/EnumsKafkaStatus' statusMessage: description: >- Why the last deploy of a Managed Kafka cluster failed. Only set while status is failed. type: string storageAutoscale: $ref: '#/components/schemas/PayloadsKafkaClusterStorageAutoscale' description: >- A Managed Kafka cluster's storage autoscaling. Only set when isManaged. tierAllTopics: description: >- Whether Artie turns tiered storage on for every topic of a Managed Kafka cluster that doesn't choose otherwise. type: boolean tieredStorageAvailable: description: >- Whether tiered storage is available on this cluster. Artie turns it on once the cluster's brokers have tiered storage. type: boolean tieredStorageSyncedAt: description: >- When the sync last made a Managed Kafka cluster's topics match the tiered storage choice for each. Missing until its first run. format: date-time type: string updatedAt: description: >- When the cluster row last changed. A deploying cluster can be retried 20 minutes after this. format: date-time type: string usesScram: type: boolean uuid: format: uuid type: string required: - uuid - name - createdAt - updatedAt - status - externalBootstrapURL - usesScram - disableTLS - cloud - region - tieredStorageAvailable - isManaged - tierAllTopics type: object PayloadsKafkaInstanceType: enum: - m8g.2xlarge - m8g.4xlarge - m8g.xlarge - m8i.2xlarge - m8i.4xlarge - m8i.xlarge - r8g.2xlarge - r8g.large - r8g.xlarge - r8i.2xlarge - r8i.large - r8i.xlarge type: string EnumsKafkaDeployStage: enum: - applying_custom_resources - issuing_tls_certificate - provisioning_broker_nodes - starting_kafka_brokers - creating_load_balancer type: string PayloadsKafkaClusterManaged: properties: allowedCIDRs: description: >- Client IP ranges allowed to reach the cluster. Empty when any IP can connect. items: type: string type: array brokers: type: integer instanceType: type: string kafkaVersion: type: string pendingChange: $ref: '#/components/schemas/PayloadsKafkaClusterChange' description: >- The cluster's latest change that isn't applied yet. Missing once every change is applied, and while the cluster isn't active. storageGiB: description: Disk per broker in GiB. type: integer required: - brokers - instanceType - storageGiB - allowedCIDRs - kafkaVersion type: object EnumsKafkaStatus: enum: - draft - active - deploying - failed - deleted type: string PayloadsKafkaClusterStorageAutoscale: properties: bumpAtPercent: description: >- How full, in %, a broker's disk gets before every broker's disk grows. At most 99. Defaults to 65. maximum: 99 minimum: 1 type: integer enabled: description: Whether Artie grows the brokers' disks before they fill. type: boolean maxGiB: description: >- The most disk per broker, in GiB, a grow goes to. Missing is no limit. minimum: 1 type: integer targetPercent: description: >- How full, in %, the fullest broker's disk is after a grow. Less than bumpAtPercent. Defaults to 55. maximum: 98 minimum: 1 type: integer required: - enabled - bumpAtPercent - targetPercent type: object PayloadsKafkaClusterChange: properties: field: description: >- The setting the change is to. The other fields already show its new value. enum: - allowedCIDRs - storageGiB - brokers - instanceType - tieredStorage type: string startedAt: description: When the change was saved. format: date-time type: string state: description: >- Applying until the apply's time limit after the save has passed (15 minutes plus a broker roll per broker, plus 5 minutes), then failed: the apply failed or was lost. Saving the same value again retries it. enum: - applying - failed type: string summary: description: >- What the change does, as the Activity feed says it, such as "Grew broker storage from 50 GiB to 80 GiB". type: string required: - state - field - summary - startedAt type: object securitySchemes: ApiKey: description: API key passed as a Bearer token in the Authorization header. scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.