I'm making a foray into the API soon so I'm sure that I'll know more then. Ensure /tmp has noexec off. This is an obvious security issue but sometimes one just wants a working cluster. Trying to install downlevel versions of CDH is mostly a disaster on Ubuntu since the repo lists are wrong and the installation instructions (part B) happily download the wrong repo list on the agent machines and use that. This results in mysterious failures later. Does anyone actually test the instructions - likely not!
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Yes, and so if you start from a "golden" VM image, make sure that the UUID is deleted from the image. I'm more paranoid so my scripts turn things off, make sure that the UUID is gone, then start the agents and finally the server.
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Hey Ben What I did (on ubuntu) is to look for Hadoop services in /etc/init.d and then turn them off using rc-update.d. Can't you pipe the output of your script to grep and then chkconfig --level 2345 - off?
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I figured out what the problem was and am posting this as a community service: a) Cloudera server db log is in /var/log/cloudera-scm-server/db.log b) Once I found the log, the problem was lack of memory on the new system since psql needs a contiguous chunk. Due to the lomem issue, the server failed to start and did not clear out stale state in management properties.
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And it is definitely some stale state, but I don't know where this state is: org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:136) at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:66)
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After a hostname change, the cloudera manager server database fails to start. This causes the manager not to start either. The files in /etc/cloudera-scm-server/db.mgmt.properties show the old hostname. a) Where are the logs for the cloudera manager server database on Ubuntu 14.04? b) How do I get the database started. c) For many reasons, I can't use the old hostname any more thanks Verghese
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