Thanks for all the input. I am trying to do cluster setup in EC2 but not able to find how i can do dns updation centrally. If anyone one knows how to do this please help me ..
On Sat, Dec 17, 2011 at 8:10 PM, Michel Segel <[email protected]>wrote: > Actually I would recommend avoiding /etc/hosts and using DNS if this is > going to be a production grade cluster... > > Sent from a remote device. Please excuse any typos... > > Mike Segel > > On Dec 17, 2011, at 5:40 AM, alo alt <[email protected]> wrote: > > > Hi, > > > > in the slave - file too. /etc/hosts is also recommend to avoid DNS > > issues. After adding in slaves the new node has to be started and > > should quickly appear in the web-ui. If you don't need the nodes all > > time you can setup a exclude and refresh your cluster > > ( > http://wiki.apache.org/hadoop/FAQ#I_want_to_make_a_large_cluster_smaller_by_taking_out_a_bunch_of_nodes_simultaneously._How_can_this_be_done.3F > ) > > > > - Alex > > > > On Sat, Dec 17, 2011 at 12:06 PM, madhu phatak <[email protected]> > wrote: > >> Hi, > >> I am trying to add nodes dynamically to a running hadoop cluster.I > started > >> tasktracker and datanode in the node. It works fine. But when some node > >> try fetch values ( for reduce phase) it fails with unknown host > exception. > >> When i add a node to running cluster do i have to add its hostname to > all > >> nodes (slaves +master) /etc/hosts file? Or some other way is there? > >> > >> > >> -- > >> Join me at http://hadoopworkshop.eventbrite.com/ > > > > > > > > -- > > Alexander Lorenz > > http://mapredit.blogspot.com > > > > P Think of the environment: please don't print this email unless you > > really need to. > > > -- Join me at http://hadoopworkshop.eventbrite.com/
