FAQ
Hi,

Recently we added few news nodes and it seems Cloudera Manager has
installed datanodes with cdh3u5 version ( a saw the caution in the
installation guide later ), now the datanodes can not connect because
namenode is at cdh3u4 version. Can any one please advise if we can upgrade
the cluster using Cloudera Manager free version to chd3u5 or how can I
downgrade datanodes to cdh3u4 version..

Is it straight forward update or there are some cautions?

Appreciate your response..

Regards.

Deepak.

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  • Mark at Sep 13, 2012 at 9:26 pm
    Did you try this?
    https://ccp.cloudera.com/display/ENT/Uninstalling+Cloudera+Manager
    On Thursday, September 13, 2012 2:01:39 PM UTC-7, Deeepak wrote:

    Hi,

    Recently we added few news nodes and it seems Cloudera Manager has
    installed datanodes with cdh3u5 version ( a saw the caution in the
    installation guide later ), now the datanodes can not connect because
    namenode is at cdh3u4 version. Can any one please advise if we can upgrade
    the cluster using Cloudera Manager free version to chd3u5 or how can I
    downgrade datanodes to cdh3u4 version..

    Is it straight forward update or there are some cautions?

    Appreciate your response..

    Regards.

    Deepak.
  • Joey Echeverria at Sep 13, 2012 at 9:46 pm
    I wouldn't recommend uninstalling CM.

    What likely happened is that the CM used the "generic" yum repo URL.

    The easiest thing to do will be to upgrade all of the other nodes.
    Unfortunately, CM can't do that for you.

    What you want to do is run the following commands on all nodes:

    sudo yum clean all
    sudo yum update --disablerepo='*' --enablerepo=cloudera-cdh3

    The full docs for upgrading minor releases is here:

    https://ccp.cloudera.com/display/FREE4DOC/Upgrading+to+the+Latest+Version+of+CDH3+in+a+Cloudera+Managed+Deployment

    -Joey
    On Thu, Sep 13, 2012 at 5:26 PM, Mark wrote:
    Did you try this?
    https://ccp.cloudera.com/display/ENT/Uninstalling+Cloudera+Manager

    On Thursday, September 13, 2012 2:01:39 PM UTC-7, Deeepak wrote:

    Hi,

    Recently we added few news nodes and it seems Cloudera Manager has
    installed datanodes with cdh3u5 version ( a saw the caution in the
    installation guide later ), now the datanodes can not connect because
    namenode is at cdh3u4 version. Can any one please advise if we can upgrade
    the cluster using Cloudera Manager free version to chd3u5 or how can I
    downgrade datanodes to cdh3u4 version..

    Is it straight forward update or there are some cautions?

    Appreciate your response..

    Regards.

    Deepak.


    --
    Joey Echeverria
    Principal Solutions Architect
    Cloudera, Inc.
  • Deepak Tiwari at Sep 13, 2012 at 10:03 pm
    Thanks..
    On Thu, Sep 13, 2012 at 2:46 PM, Joey Echeverria wrote:

    I wouldn't recommend uninstalling CM.

    What likely happened is that the CM used the "generic" yum repo URL.

    The easiest thing to do will be to upgrade all of the other nodes.
    Unfortunately, CM can't do that for you.

    What you want to do is run the following commands on all nodes:

    sudo yum clean all
    sudo yum update --disablerepo='*' --enablerepo=cloudera-cdh3

    The full docs for upgrading minor releases is here:


    https://ccp.cloudera.com/display/FREE4DOC/Upgrading+to+the+Latest+Version+of+CDH3+in+a+Cloudera+Managed+Deployment

    -Joey
    On Thu, Sep 13, 2012 at 5:26 PM, Mark wrote:
    Did you try this?
    https://ccp.cloudera.com/display/ENT/Uninstalling+Cloudera+Manager

    On Thursday, September 13, 2012 2:01:39 PM UTC-7, Deeepak wrote:

    Hi,

    Recently we added few news nodes and it seems Cloudera Manager has
    installed datanodes with cdh3u5 version ( a saw the caution in the
    installation guide later ), now the datanodes can not connect because
    namenode is at cdh3u4 version. Can any one please advise if we can
    upgrade
    the cluster using Cloudera Manager free version to chd3u5 or how can I
    downgrade datanodes to cdh3u4 version..

    Is it straight forward update or there are some cautions?

    Appreciate your response..

    Regards.

    Deepak.


    --
    Joey Echeverria
    Principal Solutions Architect
    Cloudera, Inc.

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