I had the same problems as mentioned here. Tasks done up to that point: intalled ambari-server to SLES with
wget -nv http://public-repo-1.hortonworks.com/ambari/suse11/2.x/updates/2.0.1/ambari.repo -O /etc/zypp/repos.d/ambari.repo
zypper install ambari-server
ambari-server setup
ambari-server start
I found help here: https://www-01.ibm.com/support/knowledgecenter/SSPT3X_4.0.0/com.ibm.swg.im.infosphere.biginsights.trb.doc/doc/trb_inst_ambconnect.html
Summary: replace some values in the ambari configuration:
cp /etc/ambari-server/conf/ambari.properties /etc/ambari-server/conf/ambari.properties.orig
sed -i 's/server.execution.scheduler.maxThreads=.*/server.execution.scheduler.maxThreads=72/' /etc/ambari-server/conf/ambari.properties
sed -i 's/agent.threadpool.size.max=.*/agent.threadpool.size.max=72/' /etc/ambari-server/conf/ambari.properties
sed -i 's/client.threadpool.size.max=.*/client.threadpool.size.max=72/' /etc/ambari-server/conf/ambari.properties
