Are you able to access namenode UI? if so, check what is the value for "Namespace:", say it is mycluster then in fs.defaultFs configure hdfs://mycluster The value might be there in hdfs-site.xml as well, under dfs.nameservices
-Ayush On Sun, 23 Aug 2020 at 20:20, Muthupandiyan, Kamaraj < kamaraj.muthupandi...@hpe.com> wrote: > Hi Ayush, > > > > Thanks for your reply, yes we followed the same document and applied the > config. For our setup, we have configured HA and its working fine. But, we > are getting the following error while executing the the commands. > > > > *-ls: java.net.UnknownHostException: hdfs* > > *-mkdir: java.net.UnknownHostException: hdfs* > > > > > > Regards, > > Kamaraj > > InfoSight - SRE > > > > *From: *Ayush Saxena <ayush...@gmail.com> > *Sent: *Sunday, August 23, 2020 7:17 PM > *To: *Muthupandiyan, Kamaraj <kamaraj.muthupandi...@hpe.com> > *Cc: *Mingliang Liu <lium...@gmail.com>; user@hadoop.apache.org > *Subject: *Re: Error while running "hdfs fs" commands > > > > Hi Kamaraj, > > If you are trying to setup an HA cluster, you need couple of more configs > as well, You can follow this document, this should answer all your doubts : > > > https://hadoop.apache.org/docs/r3.3.0/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html#Deployment > > > > -Ayush > > > > On Sun, 23 Aug 2020 at 18:53, Muthupandiyan, Kamaraj < > kamaraj.muthupandi...@hpe.com> wrote: > > Hi Mingliang Liu, > > > > Thank you for your reply. > > > > As I am completely new to setting up the Hadoop cluster I am not sure > about the value of *fs.defaultFS.* I have set the below one as the > value, Could you please help me with the correct value. > > > > <property> > > <name>fs.defaultFS</name> > > <value>hdfs://hdfs</value> > > </property> > > > > > > As a additional information, we have two name nodes in our cluster. > > > > Regards, > > Kamaraj > > InfoSight - SRE > > > > *From: *Mingliang Liu <lium...@gmail.com> > *Sent: *Friday, August 21, 2020 11:14 PM > *To: *Muthupandiyan, Kamaraj <kamaraj.muthupandi...@hpe.com> > *Cc: *user@hadoop.apache.org > *Subject: *Re: Error while running "hdfs fs" commands > > > > Seems that you have a wrong fs.defaultFS configuration in your > core-site.xml > > > > For the second command you should follow the user manual. The input is > simply not valid. Try something like: > > > > hadoop fs -ls hdfs://sym-hdfsnn1.lvs.nimblestorage.com/user > > or > > hadoop fs -ls file:///tmp > > > > On Fri, Aug 21, 2020 at 9:07 AM Muthupandiyan, Kamaraj < > kamaraj.muthupandi...@hpe.com> wrote: > > Hi Team, > > > > Whenever I am executing the hdfs fs command and I am getting below error, > please help me with this. > > > > [hdfs@hdfsnn1 ~]$ hdfs dfs -ls /user > > -ls: java.net.UnknownHostException: hdfs > > > > > > [hdfs@sym-hdfsnn1 ~]$ hadoop fs -ls / file:///%7Chdfs:hdfsnn1:8020/ > > -bash: hdfs:sym-hdfsnn1.lvs.nimblestorage.com:8020/: No such file or > directory > > -ls: java.net.UnknownHostException: hdfs > > Usage: hadoop fs [generic options] > > [-appendToFile <localsrc> ... <dst>] > > [-cat [-ignoreCrc] <src> ...] > > [-checksum <src> ...] > > [-chgrp [-R] GROUP PATH...] > > [-chmod [-R] <MODE[,MODE]... | OCTALMODE> PATH...] > > [-chown [-R] [OWNER][:[GROUP]] PATH...] > > [-copyFromLocal [-f] [-p] [-l] [-d] <localsrc> ... <dst>] > > [-copyToLocal [-f] [-p] [-ignoreCrc] [-crc] <src> ... <localdst>] > > [-count [-q] [-h] [-v] [-t [<storage type>]] [-u] [-x] <path> ...] > > [-cp [-f] [-p | -p[topax]] [-d] <src> ... <dst>] > > [-createSnapshot <snapshotDir> [<snapshotName>]] > > [-deleteSnapshot <snapshotDir> <snapshotName>] > > [-df [-h] [<path> ...]] > > [-du [-s] [-h] [-x] <path> ...] > > [-expunge] > > [-find <path> ... <expression> ...] > > [-get [-f] [-p] [-ignoreCrc] [-crc] <src> ... <localdst>] > > [-getfacl [-R] <path>] > > [-getfattr [-R] {-n name | -d} [-e en] <path>] > > [-getmerge [-nl] [-skip-empty-file] <src> <localdst>] > > [-help [cmd ...]] > > [-ls [-C] [-d] [-h] [-q] [-R] [-t] [-S] [-r] [-u] [<path> ...]] > > [-mkdir [-p] <path> ...] > > [-moveFromLocal <localsrc> ... <dst>] > > > > > > > > Regards, > > Kamaraj > > InfoSight - SRE > > > > > > > -- > > L > > > > >
