Thanks for kindly help. "Please check master host can be accessed by name master from itself." Could you please tell how to check this? Also to use FQDNs, because I am using VMware the FQDN is only a dummy one. I tried to use master.spark but it had the same mistake.
Please kindly help. On Fri, Oct 16, 2015 at 11:57 PM Myroslav Papyrkovskyy < [email protected]> wrote: > Hello. > Interesting issue because in your case logs actually say that master is > resolved because http request returned 404. > But it also say that master cannot resolve itself. > Please check master host can be accessed by name master from itself. > > Also it is recommended to use FQDNs with Ambari and Hadoop. So please > consider extending your hosts file a bit. > > Regards, > Myroslav > > > > *From:* 张炜 [mailto:[email protected]] > *Sent:* Friday, October 16, 2015 5:10 PM > *To:* [email protected] > *Subject:* Error: Your requested host "master" could not be resolved by > DNS > > > > Dear all, > > I am using VMware workstation and have created 3 nodes to build a HDP > cluster. I named the 3 nodes: > > *master* > > *node1* > > *node2* > > > > Ambari-Server got successfully installed, but when I try to start all > services, I saw the following error message: > > > > resource_management.core.exceptions.Fail: Execution of 'curl -sS -L -w > '%{http_code}' -X PUT ' > http://master:50070/webhdfs/v1/tmp?op=MKDIRS&user.name=hdfs'' returned > status_code=404. > > > > <TITLE>Network Error</TITLE> > > <big>Network Error (dns_unresolved_hostname)</big> > > Your requested host "master" could not be resolved by DNS. > > ... > > > > I have added in /etc/hosts the information below: > > > > 192.168.136.7 master > > 192.168.136.8 node1 > > 192.168.136.9 node2 > > > > I also verified the passwordless SSH is successful between these 3 nodes. > > > > Please let me know what configuration is needed to make the webHDFS > related services running, currently NameNode, HMaster etc. cannot run and > the cluster cannot be used. > > Thanks a lot! > > > > > > Regards, > > Sai >
