Manage Security Certificates

During installation, Elastic Cloud Enterprise generates certificates so that you can connect to your installation securely. In order to connect securely, you must first download and trust the CA certificates generated during installation before issuing any requests to Elastic Cloud Enterprise. If your organization operates as its own certificate authority, you can provide your certificates for Elastic Cloud Enterprise to avoid a security warning when connecting to the Cloud UI over HTTPS.

In these instructions, we show you how you can download the security certificate that gets generated during the Elastic Cloud Enterprise install and use it to add your own TLS/SSL certificates. You can add your TLS/SSL certificates any time after you have installed Elastic Cloud Enterprise on your hosts. In addition to the steps shown here, you might also need to import your CA certificate into your browser certificate chain, if you don’t already use the same certificate within your organization.

You can change the certificates for the following Elastic Cloud Enterprise components separately:

Proxy certificate
Used to connect securely to Elasticsearch clusters and Kibana. You should use a wildcard certificate rooted at the cluster endpoint that you set (*.example.com, for example). A wildcard certificate is required, because the first label of the DNS address is distinct for Elasticsearch clusters and Kibana (bc898abb421843918ebc31a513169a.example.com, for example).
Cloud UI certificate
Used to connect securely to the Cloud UI.

After the certificates have been installed, connecting securely to Elasticsearch, Kibana, and the Cloud UI or making secure RESTful API calls to Elastic Cloud Enterprise should not result in any security warnings or errors.

Before you begin:

  1. If your organization already uses a CA certificate and X.509 certificate chain, you need to have these files ready. You also need your unencrypted RSA private key.
  2. Obtain the existing certificate generated during the installation of Elastic Cloud Enterprise. You can use the openssl command line tool to display the whole server certificate chain. Run the command against the Cloud UI URL provided at the end of the installation process on your first host, 192.168.43.10:12343 in our example:

    openssl s_client -showcerts -connect 192.168.43.10:12343 < /dev/zero
    
    CONNECTED(00000003)
    depth=2 CN = elastic ce master
    verify error:num=19:self signed certificate in certificate chain
    ---
    Certificate chain
     0 s:/CN=elastic ce admin console a954e2668da4
       i:/CN=elastic ce admin console root
    -----BEGIN CERTIFICATE-----
    MIIDjzCCAnegAwIBAgIGAVqk1eYJMA0GCSqGSIb3DQEBCwUAMCgxJjAkBgNVBAMT
    HWVsYXN0aWMgY2UgYWRtaW4gY29uc29sZSByb290MB4XDTE3MDMwNjE4MTYwNVoX
    DTI3MDMwNDE4MTYwNVowMDEuMCwGA1UEAxMlZWxhc3RpYyBjZSBhZG1pbiBjb25z
    b2xlIGE5NTRlMjY2OGRhNDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB
    ALqsQZexkEWoOnhK5uDrGC4kjEWVSWoYOR6ymd8ySHIqhqAZTGoRhiO46jlrCr+e
    Jqn3a+qlNNCmEBc5BqjDlKpEKmaLQJoAZock2fOXLiKVQZiJK+ygShoMq2KGpIeY
    m/gzQ01atAuETBut8AgpjMN2/xbm3FI0KiqPEpglC8wKQ4hKukbVn5YJBZmBjJxr
    17vzhDpC/qJJ+owRNUoz9vd4VEfDjNhaZWJ8ihDWUCL9rDwVp8XVLUQ38SBurd7A
    zJjfzHfrpI9+C8F2UBHjDdqus253Qho5a8S+hGq7VRVqcGoo0nvqThVvR2s0tEDk
    fsN0rDOL3or9BwUbv0gIiAECAwEAAaOBtjCBszAsBgNVHREEJTAjggxlY2UtMC1y
    dW5uZXKCDTE5Mi4xNjguNDMuMTCHBMCoKwowSQYDVR0jBEIwQIAUgB4X3GsrUoGz
    SzJ4IQ8nuB6cosOhIKQeMBwxGjAYBgNVBAMTEWVsYXN0aWMgY2UgbWFzdGVyggYB
    WqTVH5EwHQYDVR0OBBYEFA7euGA6jC4XSKCRNt1ZWqABUa/EMAkGA1UdEwQCMAAw
    DgYDVR0PAQH/BAQDAgTwMA0GCSqGSIb3DQEBCwUAA4IBAQA9xskIXZ8byN0I+M/R
    cXKbvVzsu//gVgswCSZ/KpidWZnSxhuQ4tIryby6DqTKSvzp17ASld1VrYp3vZw+
    zIgU7k7f/w2ATnm39Sn/DxuKUGEblMjUs2X9cF+ijFZklgX1LyWwIK9iKCATuS7J
    OThTFGuV0NScsvhiFTTaCXteQql+WwFOI2vL5XZKE8XiQesDiJfNbWg2K/EhxBih
    sFPWgik9aljciAHXK/pH9vQNf2rfpSL9HSTc89RetDFkmkXGIPKd3lxORE6wCdKm
    mUi6uktMCnBSyMapNEbiWR3sAPf30y81UAVJKcnzd7r8bP3V/19ZBEfvEUSy80DT
    th3x
    -----END CERTIFICATE-----
     1 s:/CN=elastic ce admin console root
       i:/CN=elastic ce master
    -----BEGIN CERTIFICATE-----
    MIIDUDCCAjigAwIBAgIGAVqk1R+RMA0GCSqGSIb3DQEBCwUAMBwxGjAYBgNVBAMT
    EWVsYXN0aWMgY2UgbWFzdGVyMB4XDTE3MDMwNjE4MTUxNVoXDTI3MDMwNDE4MTUx
    NVowKDEmMCQGA1UEAxMdZWxhc3RpYyBjZSBhZG1pbiBjb25zb2xlIHJvb3QwggEi
    MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCbse8n9LOSSnrBI6KSFieNZKKL
    MEjK+TqbA5dYmyC7935Jkpe2aWBhVT2o29+EgKotlWF6/3i+db4SPRVTJ21rLYJu
    usPkPr9jkEvKxExPG9hgzvXBQvbgKx4kzw9wEi5Mmh1bEsEBqkQsfXG5Tgk8J+VA
    IUIueiqZXhkmZvEx4e7m2rVhxWoVMHkzlQGOmZ77cQ9F68yFeCnbXUrvIIVs1Doj
    vFOybEFfYKuMjUqG+i6M0WrvOxij6QHnOfLEBc/Th0ckU60yKFnTYRHaym6xBcZN
    oDdkGwl7imbn62jvBUF7VLs7QLnkjF7ExxDksY3uxdcL9+q7BRwFW3bDTWDfAgMB
    AAGjgYswgYgwSQYDVR0jBEIwQIAUZdT53vvMI/XLUKahehVoLA5z4RGhIKQeMBwx
    GjAYBgNVBAMTEWVsYXN0aWMgY2UgbWFzdGVyggYBWqTVFtIwHQYDVR0OBBYEFIAe
    F9xrK1KBs0syeCEPJ7genKLDMAwGA1UdEwQFMAMBAf8wDgYDVR0PAQH/BAQDAgH2
    MA0GCSqGSIb3DQEBCwUAA4IBAQDR6vYhPau8ue0D/+iUha1NA6zAoImSEqr06dGe
    fyDJ5BCRWIEXvF4e//th55h/8eObCZhyeDPhcg1u73MWWGub3WO1EFqo4+Se7fKS
    6uz5tTQplfSHI6fUaRzQ6lIClmc5RaAtnV86if/pfcK9Vb0yoLxOR4510gFZTp2x
    WRi8Q9E2LHkTYoMxoWZG9CyNrZ1apsV8GE1DG9f8OaxJ99exymVctySQynJqPSPP
    S2Xzb6TYzvW6ZiApzAgM6oS2KejA2CRNO+HjNWsJCceBuM8Z60Jq8Rm5Wh1rHjWw
    vFJZB0z0J6l/rOKAIIpeoPxoyDr/4RlommC3BRMEcOF0NdTk
    -----END CERTIFICATE-----
     2 s:/CN=elastic ce master
       i:/CN=elastic ce master
    -----BEGIN CERTIFICATE-----
    MIIDRDCCAiygAwIBAgIGAVqk1RbSMA0GCSqGSIb3DQEBCwUAMBwxGjAYBgNVBAMT
    EWVsYXN0aWMgY2UgbWFzdGVyMB4XDTE3MDMwNjE4MTUxMloXDTI3MDMwNDE4MTUx
    MlowHDEaMBgGA1UEAxMRZWxhc3RpYyBjZSBtYXN0ZXIwggEiMA0GCSqGSIb3DQEB
    AQUAA4IBDwAwggEKAoIBAQDbwOBtXjKvw4B10HDfoXatlXn8qUHkesV9+lWT0NT1
    WU1X4rc9TwCsWHbH1S0YmOiTw9YVrzFjbYtjNgW5M3DXiewfvnfVm6ifrcuU1C0L
    yN8WxqBmvQt/7H2hyKwgsmiXfoULbT5PGuhizvRntlD2OgnPjshwetkRN//O3NWo
    Osd2LKMyzUvRPxNP2CwbQLetLgEpQjrjB+nfv4WZHkAQ4vGwxFkN6WaIpqhuhg2q
    I8xEHHh1IYTEOiQJZXXg7nU3vqY3kQ2Yu9kopuUJoXY5CviZLZO/xCriNVEPaOhX
    6pWM+dDHaEzx1EiZNg3bjpAXAP+aErSDVAlqbYqCoeAvAgMBAAGjgYswgYgwHQYD
    VR0OBBYEFGXU+d77zCP1y1CmoXoVaCwOc+ERMEkGA1UdIwRCMECAFGXU+d77zCP1
    y1CmoXoVaCwOc+ERoSCkHjAcMRowGAYDVQQDExFlbGFzdGljIGNlIG1hc3RlcoIG
    AVqk1RbSMAwGA1UdEwQFMAMBAf8wDgYDVR0PAQH/BAQDAgH2MA0GCSqGSIb3DQEB
    CwUAA4IBAQBclrkSxPRhN6uxPmJ4QIlZ8OOBKuPPul5434Au8UWAzQX8p6tKLBBT
    Zpl9py/fg8YS1iTlPBkRCjssZG9x3x0gG2ftDqrO4AqL7L0X3oZRy+sIkG17h3GI
    CcHO596EGzhFPSa183kIwGXb4mI5nNUe43KkDXEyid/VIn27jokeqslfu2KQJnC1
    ggwLRgrNpeNO4pb7cK4aBu3oLZ0tPnhdbIG+bVgHE6a6ZYyBH266oJmNpqmNOTzn
    JjrgOt5gEB5JcL1VWXZ3lU3ukd5Jq/rGFkqytBj+uQccpuWkGUMqU82xjREES8D8
    AIHl4ghc6SM1jl2SqZR7aoAjP0uGwW31
    -----END CERTIFICATE-----
    ---
    Server certificate
    subject=/CN=elastic ce admin console a954e2668da4
    issuer=/CN=elastic ce admin console root
    ---
    No client certificate CA names sent
    Peer signing digest: SHA512
    Server Temp Key: ECDH, P-256, 256 bits
    ---
    SSL handshake has read 3120 bytes and written 433 bytes
    ---
    New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-GCM-SHA384
    Server public key is 2048 bit
    Secure Renegotiation IS supported
    Compression: NONE
    Expansion: NONE
    No ALPN negotiated
    SSL-Session:
        Protocol  : TLSv1.2
        Cipher    : ECDHE-RSA-AES256-GCM-SHA384
        Session-ID: C9FA70D80592981C4174F490EF47AF0091326AED6ED4115CED30A9861EBD7758
        Session-ID-ctx:
        Master-Key: 0EF40D4B72E102395352FE7935CAA47CA84BF743E8BF102B98856AFCB76E4BDDCEFDE3E0F7D4D4681A3BCFB170864C9F
        Key-Arg   : None
        PSK identity: None
        PSK identity hint: None
        SRP username: None
        Start Time: 1488824550
        Timeout   : 300 (sec)
        Verify return code: 19 (self signed certificate in certificate chain)
    ---
    HTTP/1.1 501 Not Implemented
    Server: fac/9431ee
    Date: Mon, 06 Mar 2017 18:21:19 GMT
    Content-Type: text/plain; charset=UTF-8
    Connection: close
    Content-Length: 23
    Unsupported HTTP methodclosed
  3. Save the last certificate shown in the output to a local file, elastic-ece-ca-cert.pem in this example:

    cat << EOF > ~/elastic-ece-ca-cert.pem
    -----BEGIN CERTIFICATE-----
    MIIDRDCCAiygAwIBAgIGAVqk1RbSMA0GCSqGSIb3DQEBCwUAMBwxGjAYBgNVBAMT
    EWVsYXN0aWMgY2UgbWFzdGVyMB4XDTE3MDMwNjE4MTUxMloXDTI3MDMwNDE4MTUx
    MlowHDEaMBgGA1UEAxMRZWxhc3RpYyBjZSBtYXN0ZXIwggEiMA0GCSqGSIb3DQEB
    AQUAA4IBDwAwggEKAoIBAQDbwOBtXjKvw4B10HDfoXatlXn8qUHkesV9+lWT0NT1
    WU1X4rc9TwCsWHbH1S0YmOiTw9YVrzFjbYtjNgW5M3DXiewfvnfVm6ifrcuU1C0L
    yN8WxqBmvQt/7H2hyKwgsmiXfoULbT5PGuhizvRntlD2OgnPjshwetkRN//O3NWo
    Osd2LKMyzUvRPxNP2CwbQLetLgEpQjrjB+nfv4WZHkAQ4vGwxFkN6WaIpqhuhg2q
    I8xEHHh1IYTEOiQJZXXg7nU3vqY3kQ2Yu9kopuUJoXY5CviZLZO/xCriNVEPaOhX
    6pWM+dDHaEzx1EiZNg3bjpAXAP+aErSDVAlqbYqCoeAvAgMBAAGjgYswgYgwHQYD
    VR0OBBYEFGXU+d77zCP1y1CmoXoVaCwOc+ERMEkGA1UdIwRCMECAFGXU+d77zCP1
    y1CmoXoVaCwOc+ERoSCkHjAcMRowGAYDVQQDExFlbGFzdGljIGNlIG1hc3RlcoIG
    AVqk1RbSMAwGA1UdEwQFMAMBAf8wDgYDVR0PAQH/BAQDAgH2MA0GCSqGSIb3DQEB
    CwUAA4IBAQBclrkSxPRhN6uxPmJ4QIlZ8OOBKuPPul5434Au8UWAzQX8p6tKLBBT
    Zpl9py/fg8YS1iTlPBkRCjssZG9x3x0gG2ftDqrO4AqL7L0X3oZRy+sIkG17h3GI
    CcHO596EGzhFPSa183kIwGXb4mI5nNUe43KkDXEyid/VIn27jokeqslfu2KQJnC1
    ggwLRgrNpeNO4pb7cK4aBu3oLZ0tPnhdbIG+bVgHE6a6ZYyBH266oJmNpqmNOTzn
    JjrgOt5gEB5JcL1VWXZ3lU3ukd5Jq/rGFkqytBj+uQccpuWkGUMqU82xjREES8D8
    AIHl4ghc6SM1jl2SqZR7aoAjP0uGwW31
    -----END CERTIFICATE-----
    EOF

    In subsequent steps, this elastic-ece-ca-cert.pem file is referred to as the CA_CERTIFICATE_FILENAME and used to add your own TLS/SSL certificates.

Generate a CA Certificate and X.509 Certificate Chain

The steps in this section provide high-level instructions on what you need to do if you do not already have a CA certificate and X.509 certificate chain. The method by which you generate the certificate and certificate chain differs by operating system, and the exact steps are outside the scope of these instructions.

The high-level steps to generate the necessary files include:

  1. Generate a certificate authority (CA) RSA key pair.
  2. Create a self-signed CA certificate.
  3. Generate a server RSA key pair.
  4. Create a certificate signing request (CSR) for server certificate with the common name and the alternative name set.
  5. Sign the server CSR with CA key pair.
  6. Concatenate the PEM encode server RSA private key, the server certificate, and the CA certificate into a single file.

Use the concatenated file containing the unencrypted RSA private key, server certificate, and CA certificate when adding your own TLS/SSL certificates in subsequent steps.

Add a Proxy Certificate

To add a proxy certificate:

  1. Add the wildcard certificate chain for the proxy to your Elastic Cloud Enterprise installation, where CA_CERTIFICATE_FILENAME is the name of the CA certificate you downloaded earlier and PROXY_PEM_FILENAME is the name of the concatenated file containing your RSA private key, server certificate, and CA certificate:

    curl --cacert CA_CERTIFICATE_FILENAME -H 'Content-Type: application/json' --data-binary @PROXY_PEM_FILENAME --user "root:PASSWORD" "https://admin:12343/api/v1/platform/tls/proxy"
  2. Log out of any Kibana instances you might be logged into and log in again.
  3. Verify that you are now using the new certificate chain. There should be no security warnings when you connect to the Kibana endpoint over HTTPS in your web browser.

    Alternatively, you can also use the openssl command to check the proxy certificates, where HOSTNAME_OR_IP is the hostname or IP address of the proxy host:

    openssl s_client -CAfile CA_CERTIFICATE_FILENAME -showcerts -connect HOSTNAME_OR_IP:9243 < /dev/zero
    openssl s_client -CAfile CA_CERTIFICATE_FILENAME -showcerts -connect HOSTNAME_OR_IP:9343 < /dev/zero

Add a Cloud UI Certificate

To add a Cloud UI certificate:

  1. Add the certificate for the Cloud UI to your Elastic Cloud Enterprise installation, where CA_CERTIFICATE_FILENAME is the name of the CA certificate you downloaded earlier and CLOUDUI_PEM_FILENAME is the name of the concatenated file containing your RSA private key, server certificate, and CA certificate:

    curl --cacert CA_CERTIFICATE_FILENAME -H 'Content-Type: application/json' --data-binary @CLOUDUI_PEM_FILENAME --user "root:PASSWORD" "http://admin:12443/api/v1/platform/tls/ui"
  2. Log out of the Cloud UI and log in again.
  3. Verify that you are now using the new certificate chain. There should be no security warnings when you connect to the Cloud UI over HTTPS in your web browser.

    Alternatively, you can also check the certificate using the openssl command:

    openssl s_client -CAfile CA_CERTIFICATE_FILENAME -showcerts -connect containerhost:12443 < /dev/zero

After adding your certificate, API requests made through the Cloud UI should use your certificate. When you use the curl command, include the path to your CA certificate with the --cacert parameter.