---
title: "Add a sharding cluster to an existing cluster"
method: POST
path: "/api/clusters/{clusterName}/actions/add/{clusterShardingName}"
tags: ["ClusterTopology"]
---

# Add a sharding cluster to an existing cluster

`POST /api/clusters/{clusterName}/actions/add/{clusterShardingName}`

This endpoint adds a sharding cluster to an existing cluster and triggers a rolling restart.

## Path parameters

- `clusterName` string, required
- `clusterShardingName` string, required

## Headers

- `Authorization` string, required

## Response `200`

Sharding cluster added successfully

- string

## Other responses

- `403` — No valid ACL
- `500` — No cluster

---

[API](https://skmtc.net/signal18/apis/untitled-api.md) · [All operations](https://skmtc.net/signal18/apis/untitled-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/signal18/untitled-api/revisions/7465ea0ee21a/schema)