Hi all, I have solved this problem. It turns out to be that I am using proxy which is configured via "System Tools"--> "Settings"-->"Network", the solution is to append to "Ignore Hosts" all the FQDNs of nodes, for example I have three nodes: master.local.com, node1.local.com, node2.local.com, I made the "Ignore Hosts" ended up as below:
localhost, 127.0.0.0/8, ::1, master.local.com, master, node1.local.com, node1, node2.local.com, node2, 192.168.136.9, 192.168.136.7, 192.168.136.8 Thanks for the help. Regards, Sai On Mon, Oct 19, 2015 at 9:33 AM 张炜 <[email protected]> wrote: > 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 >> >
