Hi Sanjeev, Below my host entry on one of the name node
[hdfs@sym-hdfsnn1 ~]$ cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 10.175.6.10 sym-hdfsnn1.lvs.nimblestorage.com sym-hdfsnn1 Regards, Kamaraj From: संजीव (Sanjeev Tripurari)<mailto:sanjeevtripur...@gmail.com> Sent: Monday, August 24, 2020 9:43 AM To: Muthupandiyan, Kamaraj<mailto:kamaraj.muthupandi...@hpe.com> Cc: user@hadoop.apache.org<mailto:user@hadoop.apache.org> Subject: Re: Error while running "hdfs fs" commands Hi, looks like your hostname is hdfs, can you share your /etc/hosts file, you will have to enter ip and hostname, as it looks you command is doing host lookup.. Regards -Sanjeev On Fri, 21 Aug 2020 at 21:37, Muthupandiyan, Kamaraj <kamaraj.muthupandi...@hpe.com<mailto: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:///|hdfs:hdfsnn1:8020/ -bash: hdfs:sym-hdfsnn1.lvs.nimblestorage.com:8020/<http://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
