@Before
  public void setUp() throws IOException, GeneralSecurityException, InterruptedException {
    rootFolder = folderRule.getFolder().toPath().toAbsolutePath();

    caCert = new CertificateBuilder()
        .commonName("ca")
        .isCA()
        .generate();

    startCluster();
    startClient();
  }
The test setup creates a cluster with 1 locator and 2 servers, a client cache, and a CA
certificate. The cluster has SSL enabled for all components and uses client authentication. The
cluster members share a certificate which is signed by a CA and trust the CA certificate. The
client has a certificate signed by the same CA and also trusts the CA certificate.
geode-assembly/src/acceptanceTest/java/org/apache/geode/ssl/CertificateRotationTest.java