successThreshold: 1
  failureThreshold: 3
```

## Cluster probe

### Cluster-writeable probe

The reply is '200 OK' if cluster has write quorum if not it returns '503 Service Unavailable'.

```
curl http://minio1:9001/minio/health/cluster
HTTP/1.1 503 Service Unavailable
Accept-Ranges: bytes
Content-Length: 0
Server: MinIO
Vary: Origin
X-Amz-Bucket-Region: us-east-1
X-Minio-Write-Quorum: 3

    assumeNetwork()

    val request = Request("https://www.google.com/robots.txt".toHttpUrl())

    val networkRequest =
      request
        .newBuilder()
        .build()

    val call = client.newCall(networkRequest)

    call.execute().use { response ->
      assertThat(response.code).isEqualTo(200)
      assertThat(response.cacheResponse).isNull()
    }

    val cachedCall = client.newCall(request)

        .header("Sec-WebSocket-Version", "13")
        .header("Sec-WebSocket-Extensions", "permessage-deflate")
        .build()
    call = RealCall(webSocketClient, request, forWebSocket = true)
    call!!.enqueue(
      object : Callback {
        override fun onResponse(
          call: Call,
          response: Response,
        ) {
          val socket =
            try {
              checkUpgradeSuccess(response)

		// Dummy Bucket Calls
		// GetBucketACL -- this is a dummy call.
		router.Methods(http.MethodGet).
			HandlerFunc(s3APIMiddleware(api.GetBucketACLHandler)).
			Queries("acl", "")
		// PutBucketACL -- this is a dummy call.
		router.Methods(http.MethodPut).
			HandlerFunc(s3APIMiddleware(api.PutBucketACLHandler)).
			Queries("acl", "")
		// GetBucketCors - this is a dummy call.
		router.Methods(http.MethodGet).

        </div>
        <section class="content">
            <div class="row">
                <div class="col-md-12">
                    <div class="card card-outline card-primary">
                        <div class="card-header">
                            <h3 class="card-title">
                                <a aria-hidden="true" href="${contextPath}/admin/storage/">
                                    <i class="fas fa-database fa-fw"

   *
   * @return {@code true} if the graph was modified as a result of this call
   */
  @CanIgnoreReturnValue
  boolean removeNode(N node);

  /**
   * Removes the edge connecting {@code nodeU} to {@code nodeV}, if it is present.
   *
   * @return {@code true} if the graph was modified as a result of this call
   */
  @CanIgnoreReturnValue
  boolean removeEdge(N nodeU, N nodeV);

  /**

	BEQ	R1, 2(PC)
	JAL	1(PC)		// CALL 1(PC)	// 0c00000f
	BEQ	R1, 2(PC)
	JAL	label0+0	// CALL 3	// 0c000007

//	LBRA addr
//	{
//		outcode(int($1), &nullgen, 0, &$2);
//	}
	BEQ	R1, 2(PC)
	JMP	0(R1)		// JMP (R1)	// 00200008
	BEQ	R1, 2(PC)
	JMP	foo+0(SB)	// JMP foo(SB)	// 08000019
	BEQ	R1, 2(PC)
	JAL	0(R1)		// CALL (R1)	// 0020f809
	BEQ	R1, 2(PC)
	JAL	foo+0(SB)	// CALL foo(SB)	// 0c000021

//
// BEQ/BNE

📁 👈 📁 `main.py`.

🏃 🖖 💽:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
<span style="color: green;">INFO</span>:     Started reloader process [28720]
<span style="color: green;">INFO</span>:     Started server process [28722]

   * timeout. Because networks can fail during an exchange, it is possible that the remote server
   * accepted the request before the failure.
   */
  fun onFailure(
    call: Call,
    e: IOException,
  )

  /**
   * Called when the HTTP response was successfully returned by the remote server. The callback may

        .sslSocketFactory(clientCertificates.sslSocketFactory(), clientCertificates.trustManager())
        .build();

    Call call = client.newCall(new Request.Builder()
        .url(server.url("/"))
        .build());
    Response response = call.execute();
    System.out.println(response.handshake().tlsVersion());
  }

  public static void main(String... args) throws Exception {