// Absolute number is calculated from percentage by rounding down.
  // This can not be 0 if MaxSurge is 0.
  // Defaults to 25%.
  // Example: when this is set to 30%, the old ReplicaSet can be scaled down to 70% of desired pods
  // immediately when the rolling update starts. Once new pods are ready, old ReplicaSet
  // can be scaled down further, followed by scaling up the new ReplicaSet, ensuring

```
testRuntimeOnly("com.squareup.okhttp3:mockwebserver3-junit5:4.12.0")
```

Then in tests annotated `@org.junit.jupiter.api.Test`, you may add a [MockWebServer] as a test
method parameter. It will be shut down automatically after the test runs.

```
class MyTest {
  @Test
  void test(MockWebServer server) {
    ...
  }
}
```

Alternately you may add the [MockWebServer] as a constructor parameter:

```

## Healthcheck Probe

MinIO server has two healthcheck related un-authenticated endpoints, a liveness probe to indicate if server is responding, cluster probe to check if server can be taken down for maintenance.

- Liveness probe available at `/minio/health/live`
- Cluster probe available at `/minio/health/cluster`

  repositories are "really" offline, since offline mode is more of a behavior,
  and this will lead to counter-intuitive results. A different feature may exist
  unimplemented, which is to detect when the network is down and provide better
  feedback for that case. However, when offline mode is declared, nothing
  earmarked as remote should be accessed, regardless of whether it is actually
  a physically local resource.

The same way, you can define logic (code) that should be executed when the application is **shutting down**. In this case, this code will be executed **once**, **after** having handled possibly **many requests**.

  <artifactId>plexus-components</artifactId>
  <packaging>pom</packaging>
  <version>1.1.6</version>
  <name>Plexus Components Parent Project</name>
  <!--
    TODO: should this be pushed down to all the dependencies?
      - a more stable API JAR may be useful, for the interfaces and classes such as AbstractLogEnabled
  -->
  <dependencies>
    <dependency>
      <groupId>org.codehaus.plexus</groupId>

X-Xss-Protection: 1; mode=block
Date: Tue, 21 Jul 2020 00:36:14 GMT
```

### Checking cluster health for maintenance

You may query the cluster probe endpoint to check if the node which received the request can be taken down for maintenance, if the server replies back '412 Precondition Failed' this means you will lose HA. '200 OK' means you are okay to proceed.

```
curl http://minio1:9001/minio/health/cluster?maintenance=true

    echo "# Size of $TF_WHEEL is $WHEEL_MEGABYTES / $LARGEST_OK_SIZE megabytes." >&3
    test "$WHEEL_MEGABYTES" -le "$LARGEST_OK_SIZE"
}

# Note: this runs before the tests further down the file, so TF is installed in
# the venv and the venv is active when those tests run. The venv gets cleaned
# up in teardown_file() above.
@test "Wheel is installable" {
    python3 -m venv /tf/venv

    }

  var started: Boolean = false
  private var shutdown: Boolean = false

  @Synchronized private fun before() {
    if (started) return // Don't call start() in case we're already shut down.
    try {
      start()
    } catch (e: IOException) {
      throw RuntimeException(e)
    }
  }

  fun toProxyAddress(): Proxy {
    before()

   */
  object ShutdownOutputAtEnd : SocketPolicy

  /**
   * After accepting the connection and doing TLS (if configured) don't do HTTP/1.1 or HTTP/2
   * framing. Ignore the socket completely until the server is shut down.
   */
  object StallSocketAtStart : SocketPolicy

  /**
   * Read the request but don't respond to it. Just keep the socket open. For testing read response
   * header timeout issue.
   */