Hi, @Emilio Lopez, The agent log looks OK, it's sending hearbeats with different "id" each time. Please take a look at the contents of /var/lib/ambari-agent/data -- look for output*txt which contain "Host checks started.", and corresponding error*txt files (eg. output-2.txt and error-2.txt). Those might have some info about the problem. Also search for check_host in ambari-agent.log. ... View more

$ grep authentication.jwt /etc/ambari-server/conf/ambari.properties authentication.jwt.enabled=true authentication.jwt.providerUrl=https://somehost:8443/gw-os06/knoxsso/api/v1/websso authentication.jwt.publicKey=/etc/ambari-server/conf/jwt-cert.pem $ cat /etc/ambari-server/conf/jwt-cert.pem -----BEGIN CERTIFICATE----- MIICnTCCAYWgAwIBAgIBATANBgkqhkiG9w0BAQsFADASMRAwDgYDVQQDDAdzaWdu aW5nMB4XDTE3MTIwNTE3NDUwMloXDTI3MTIwNTE3NDUwMlowEjEQMA4GA1UEAxMH ... 60v5bHlGkAKgdziCm1DZbxmTjcjLdxZAU7NrOlhSicZl17Yym1nmT8Cq2PkSDRaZ rA== -----END CERTIFICATE---- Adding the above to ambari.properties and creating the certificate file jwt-cert.pem has the same effect as running ambari-server setup-sso interactively. For complete list of properties, including "advanced" ones, see https://github.com/apache/ambari/blob/release-2.6.0/ambari-server/src/main/python/ambari_server/setupSso.py ... View more