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"Idiot's" guide to Upgrading

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I have gotten stuck with my first HDP upgrade – from 1.3.2. (CentOS 6.1) There is nothing I can find which gives an overview of Upgrade paths. In fact I can’t seem to find a single document which describes upgrades.

Anyway I decided to go from 1.3.2 to 1.3.3 since that seemed to involve a change to HDFS and be complicated.

I am following this ( http://docs.hortonworks.com/HDPDocuments/Ambari-1.6.1.0/bk_upgrading_Ambari/content/ambari-1.3.0-upgrade.html ) and got as far as step 8.

Open the Ambari Web GUI. If you have continued to run the Ambari Web GUI, do a hard reset on your browser. Use Services View to start the HDFS service. This starts the SecondaryNameNode and the DataNodes.

Unfortunately for me I have NO services listed so I cannot start any of them. I have Heatmaps, but no Dashboard. The “Hosts page lists my six machines successfully)

Checking the Ambari server log I see this coming up a lot

ERROR GangliaPropertyProvider:466 – Caught exception getting Ganglia metrics : spec=http://null/cgi-bin/ etc etc etc

followed by a stack trace:

java.net.UnknownHostException: null
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:195)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:529)
etc etc

are these the same problem? Surely a problem with Ganglia will just affect *monitoring* not stopping and starting services.

PS I cannot see how to search these forums. Am I missing a search button? The search form on the top right only seems to search articles on the main site – not forum posts.

PPS I see that I am supposed to run “ambari check script”
eh?


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