The steps to set up Atlas with Ldaps (ssl) are below. Download the AD CA certificate on Atlas instance echo -n | openssl s_client -connect ad.xx.xx.com:636 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > /root/ldaps-ca.cert View the certificate openssl x509 -noout -text -in /root/ldaps-ca.cert Import the AD CA certificate to trust-store in Atlas instance. $JAVA_HOME/bin/keytool -import -alias AD -keystore /home/nixon/ad-truststore -file /root/ldaps-ca.cert #remember the password used while importing into trust-store Verify the certificate added to trust-store. $JAVA_HOME/bin/keytool -list -alias AD -keystore /etc/atlas/conf/ad-truststore Change ownership of trust-store if needed chown atlas:hadoop /etc/atlas/conf/ad-truststore Add the following config to Atlas Advanced atlas-env metadata_opts via Ambari, so that ATLAS_OPTS is set within atlas-env.sh -Djavax.net.ssl.trustStore=/etc/atlas/conf/ad-truststore -Djavax.net.ssl.trustStorePassword=<password> Or can be added as env variable in atlas_start.py for atlas java process. ... View more