Import Custom SSL Certificates

Generate a keystore 

Generate a repository of security certificates for Datameer's embedded Jetty. For this process, use keytool. 

1. Check the default keystore:

   Check keystore

   [datameer@<host> current]$ keytool -list -v -keystore etc/keystore | grep -i 'jetty'
   Enter keystore password:  storepwd
   Alias name: jetty
   Owner: CN=jetty.mortbay.org, OU=Jetty, O=Mort Bay Consulting Pty Ltd, L=Unknown, ST=Unknown, C=Unknown
   Issuer: CN=jetty.mortbay.org, OU=Jetty, O=Mort Bay Consulting Pty Ltd, L=Unknown, ST=Unknown, C=Unknown

2. Back up the default keystore file:

   Backup keystore

   mv etc/keystore etc/keystore.original

3. Create a new Java KeyStore (JKS) file using the datameer.p12 file that was generated previously. The keystore needs to be protected by a password. 

   Create keystore

   keytool -importkeystore -srckeystore datameer.p12 -srcstoretype PKCS12 -destkeystore etc/keystore 

   For the keystore password you can use storepwd. 

4. Obfuscate the password:

   Obfuscate password

   [datameer@<host> current]$ java -cp lib/jetty-util-* org.eclipse.jetty.util.security.Password datameer storepwd
   <timestamp>:INFO::main: Logging initialized @75ms
   storepwd
   OBF:1vny1zlo1x8e1vnw1vn61x8g1zlu1vn4
   MD5:7bfa04a176c6d48e5283e1c037e4668e
   CRYPT:dake2.vBb3e52

   The obfuscated keystore password, in this example OBF:1vny1zlo1x8e1vnw1vn61x8g1zlu1vn4 for storepwd, needs to be provided later as jetty.keystore.password in Jetty's start.ini file. 

5. Check the generated repository:

   Check keystore

   [datameer@<host> current]$ keytool -list -v -keystore etc/keystore | grep -i 'datameer'
   Enter keystore password:  storepwd
   Alias name: datameer
   Owner: <...>
   Issuer: <...>

Use your own keystore

To use the custom certificate stored in the created Java KeyStore (JKS) file, configure the start up configuration file. 

1. Check the current configuration:

   Check current config

   # The path to the keystore file 
   [datameer@<host> current]$ java -jar start.jar --list-config | grep -i 'store ='
    jetty.keystore = etc/keystore
    jetty.truststore = etc/keystore
   # The necessary passwords 
   [datameer@<host> current]$ java -jar start.jar --list-config | grep -i 'password'
    jetty.keymanager.password = OBF:1u2u1wml1z7s1z7a1wnl1u2g
    jetty.keystore.password = OBF:1vny1zlo1x8e1vnw1vn61x8g1zlu1vn4
    jetty.truststore.password = OBF:1vny1zlo1x8e1vnw1vn61x8g1zlu1vn4

2. Back up the default configuration:

   Backup config

   cp start.ini start.ini.original 

3. Configure start.ini:

   Since this example uses default values, no changes are necessary.
   Configure start.ini

   ## Set up a demonstration keystore and truststore
   jetty.keystore=etc/keystore
   jetty.truststore=etc/keystore
   
   ## Set the demonstration passwords
   ## Note that OBF passwords are not secure, just protected from casual observation
   ## See http://www.eclipse.org/jetty/documentation/current/configuring-security-secure-passwords.html
   jetty.keystore.password=OBF:1vny1zlo1x8e1vnw1vn61x8g1zlu1vn4   # storepwd
   jetty.keymanager.password=OBF:1u2u1wml1z7s1z7a1wnl1u2g         # keypwd
   jetty.truststore.password=OBF:1vny1zlo1x8e1vnw1vn61x8g1zlu1vn4 # storepwd

4. Create a configuration change log:

   Create changelog

   diff -e start.ini.original start.ini > changes.start.ini

5. Restart Datameer to make the change active and monitor the boot process:

   Start and monitor

   dmstart
   dmlog

Renew certificate

Certificates typically have an expiration date, so it is necessary to renew them. To do, so just follow the following steps again:

• Get own certificate

• Generate own keystore

• Use own keystore

Trusting Custom Certificates from Other Services

The Java Virtual Machine (JVM) enforces security and validates the certification path to the requested target. If the certificate isn't provided from a generally trusted root certificate, you need to trust the certificate by adding it into the truststore of the Java Virtual Machine (JVM) that runs Datameer. 

• Gather the certificate:

  Gather certificate

  openssl s_client -connect <host>.<domain>.<tld>:<port> -showcerts </dev/null 2>/dev/null | openssl x509 -outform PEM > <yourservice>.pem

• Validate the certificate:

  Validate certificate

  openssl x509 -in <yourservice>.pem -inform pem -noout -text

• Trust the certificate by importing it:

  Import certificate

  sudo keytool -keystore ${JAVA_HOME}/jre/lib/security/cacerts -storepass changeit -import -trustcacerts -v -alias <yourservice> -file <yourservice>.pem

• Start and stop Datameer service:

  Start and stop

  dmstop
  # This will create a new instance of the JVM 
  dmstart
  dmlog

Further Information 

For more information, refer to the Secure Socket Extension (JSSE) Reference Guide.  

You can also review available documentation from Hadoop distributors, such as Creating Java Keystores and Truststores, Understanding the SSL Keystore Factory, and Demystify LDAP, SSL, CA Cert integration. If you want to connect to an specific service, see vendor documentation such as Configure External SSL for Tableau.