Is there an installation error? Can you provide the output from the installation command? The screenshots you provide are only for upgrading, not installation. ... View more

If you select the host in the UI, and click the Versions tab, does it show that the package is installed? Try re-installing the version and see if the command succeeds. ... View more

This particular alert is basically a way of detecting abnormalities from average. It goes away when the variance is within the acceptable range from the average (when the average goes up, so too does the limit). In short, I do not believe this to be a critical alert. You may change the threshhold by finding it in alerts.json for the service in question (for example, is this the HDFS NameNode heap alert?) and changing the threshhold for Warning, Critical etc. ... View more

Typically env files like storm-env are shared across all the components, so a restart would be appropriate. ... View more

You might be able to change the port via: # sqlplus sys/root as sysdba call dbms_xdb.cfg_update(updateXML(dbms_xdb.cfg_get(), '/xdbconfig/sysconfig/protocolconfig/httpconfig/http-port/text()', 8083)); exec dbms_xdb.cfg_refresh; ... View more

It is usually best to check the slave logs to see if they're still running. If NodeManagers are all down, for example, the YARN-dependent service checks will timeout because a job may be submitted to the ResourceManager, but the jobs aren't actually being run. ... View more

What are the tables after hostgroup? You must have the table, Ambari wouldn't even start without it. What happens when you execute the query indicated by @vpoornalingam? ... View more

If you have access to the database, can you query the hosts table and see what Ambari _thinks_ what hosts you should have? The hostnames there must be the same as what the agent is announcing for itself. The agent logs should give you a hint as well. For example: "INFO 2016-03-31 10:43:31,883 Controller.py:145 - Registering with c6401.ambari.apache.org (192.168.1.1) ..." ... View more

The files mentioned are part of stack traces, which is the mechanism java uses for root-causing exceptions. You won't find them on a binary distribution. ... View more