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From Anand Murali <anand_vi...@yahoo.com>
Subject Re: Connection Refused error on Hadoop-2.6.0 on Ubuntu 14.10 desktop running Pseudo Mode
Date Thu, 23 Apr 2015 05:48:04 GMT
Many thanks my friend. Shall try it right away.
 Anand Murali  11/7, 'Anand Vihar', Kandasamy St, MylaporeChennai - 600 004, IndiaPh: (044)-
28474593/ 43526162 (voicemail) 


     On Thursday, April 23, 2015 10:51 AM, sandeep vura <sandeepvura@gmail.com> wrote:
   

 run this command in the terminal from root directory 

$ sudo nano /etc/hosts (( It will prompt to enter root password)) 

Later you can comment those lines in hosts files #127.0.1.1 

add this line 127.0.0.1     localhost

save the host file and exit 



On Thu, Apr 23, 2015 at 8:39 AM, Anand Murali <anand_vihar@yahoo.com> wrote:

Sudo what my friend. There are so many options to sudo 
Sent from my iPhone
On 23-Apr-2015, at 8:20 am, sandeep vura <sandeepvura@gmail.com> wrote:


Ananad,
Try sudo it will work 
On Wed, Apr 22, 2015 at 5:58 PM, Shahab Yunus <shahab.yunus@gmail.com> wrote:

Can you try sudo?https://www.linux.com/learn/tutorials/306766:linux-101-introduction-to-sudo

Regards,Shahab
On Wed, Apr 22, 2015 at 8:26 AM, Anand Murali <anand_vihar@yahoo.com> wrote:

Dear Sandeep:
many thanks. I did find hosts, but I do not have write priveleges, eventhough I am administrator.
This is strange. Can you please advise.
Thanks
 Anand Murali  11/7, 'Anand Vihar', Kandasamy St, MylaporeChennai - 600 004, IndiaPh: (044)-
28474593/ 43526162 (voicemail) 


     On Wednesday, April 22, 2015 4:43 PM, sandeep vura <sandeepvura@gmail.com> wrote:
   

 Hi Anand,
You should search /etc directory in root not Hadoop directory.
On Wed, Apr 22, 2015 at 2:57 PM, Anand Murali <anand_vihar@yahoo.com> wrote:

Dear All:
I dont see a etc/host. Find below.

anand_vihar@Latitude-E5540:~$ cd hadoop-2.6.0
anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ ls -al
total 76
drwxr-xr-x 12 anand_vihar anand_vihar  4096 Apr 21 13:23 .
drwxrwxr-x 26 anand_vihar anand_vihar  4096 Apr 22 14:05 ..
drwxr-xr-x  2 anand_vihar anand_vihar  4096 Nov 14 02:50 bin
drwxr-xr-x  3 anand_vihar anand_vihar  4096 Nov 14 02:50 etc
-rw-rw-r--  1 anand_vihar anand_vihar   340 Apr 21 11:51 .hadoop
drwxr-xr-x  2 anand_vihar anand_vihar  4096 Nov 14 02:50 include
drwxrwxr-x  2 anand_vihar anand_vihar  4096 Apr 22 14:04 input
drwxr-xr-x  3 anand_vihar anand_vihar  4096 Nov 14 02:50 lib
drwxr-xr-x  2 anand_vihar anand_vihar  4096 Nov 14 02:50 libexec
-rw-r--r--  1 anand_vihar anand_vihar 15429 Nov 14 02:50 LICENSE.txt
drwxrwxr-x  3 anand_vihar anand_vihar  4096 Apr 22 14:08 logs
-rw-r--r--  1 anand_vihar anand_vihar   101 Nov 14 02:50 NOTICE.txt
drwxrwxr-x  2 anand_vihar anand_vihar  4096 Apr 21 11:48 output
-rw-r--r--  1 anand_vihar anand_vihar  1366 Nov 14 02:50 README.txt
drwxr-xr-x  2 anand_vihar anand_vihar  4096 Nov 14 02:50 sbin
drwxr-xr-x  4 anand_vihar anand_vihar  4096 Nov 14 02:50 share
anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ cd etc
anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc$ ls -al
total 12
drwxr-xr-x  3 anand_vihar anand_vihar 4096 Nov 14 02:50 .
drwxr-xr-x 12 anand_vihar anand_vihar 4096 Apr 21 13:23 ..
drwxr-xr-x  2 anand_vihar anand_vihar 4096 Apr 21 13:20 hadoop
anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc$ cd hadoop
anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc/hadoop$ ls -al
total 176
drwxr-xr-x 2 anand_vihar anand_vihar  4096 Apr 21 13:20 .
drwxr-xr-x 3 anand_vihar anand_vihar  4096 Nov 14 02:50 ..
-rw-r--r-- 1 anand_vihar anand_vihar  4436 Nov 14 02:50 capacity-scheduler.xml
-rw-r--r-- 1 anand_vihar anand_vihar  1335 Nov 14 02:50 configuration.xsl
-rw-r--r-- 1 anand_vihar anand_vihar   318 Nov 14 02:50 container-executor.cfg
-rw-r--r-- 1 anand_vihar anand_vihar   880 Apr 21 13:16 core-site.xml
-rw-r--r-- 1 anand_vihar anand_vihar   774 Nov 14 02:50 core-site.xml~
-rw-r--r-- 1 anand_vihar anand_vihar  3670 Nov 14 02:50 hadoop-env.cmd
-rw-r--r-- 1 anand_vihar anand_vihar  4224 Nov 14 02:50 hadoop-env.sh
-rw-r--r-- 1 anand_vihar anand_vihar  2598 Nov 14 02:50 hadoop-metrics2.properties
-rw-r--r-- 1 anand_vihar anand_vihar  2490 Nov 14 02:50 hadoop-metrics.properties
-rw-r--r-- 1 anand_vihar anand_vihar  9683 Nov 14 02:50 hadoop-policy.xml
-rw-r--r-- 1 anand_vihar anand_vihar   863 Apr 21 13:17 hdfs-site.xml
-rw-r--r-- 1 anand_vihar anand_vihar   775 Nov 14 02:50 hdfs-site.xml~
-rw-r--r-- 1 anand_vihar anand_vihar  1449 Nov 14 02:50 httpfs-env.sh
-rw-r--r-- 1 anand_vihar anand_vihar  1657 Nov 14 02:50 httpfs-log4j.properties
-rw-r--r-- 1 anand_vihar anand_vihar    21 Nov 14 02:50 httpfs-signature.secret
-rw-r--r-- 1 anand_vihar anand_vihar   620 Nov 14 02:50 httpfs-site.xml
-rw-r--r-- 1 anand_vihar anand_vihar  3523 Nov 14 02:50 kms-acls.xml
-rw-r--r-- 1 anand_vihar anand_vihar  1325 Nov 14 02:50 kms-env.sh
-rw-r--r-- 1 anand_vihar anand_vihar  1631 Nov 14 02:50 kms-log4j.properties
-rw-r--r-- 1 anand_vihar anand_vihar  5511 Nov 14 02:50 kms-site.xml
-rw-r--r-- 1 anand_vihar anand_vihar 11291 Nov 14 02:50 log4j.properties
-rw-r--r-- 1 anand_vihar anand_vihar   938 Nov 14 02:50 mapred-env.cmd
-rw-r--r-- 1 anand_vihar anand_vihar  1383 Nov 14 02:50 mapred-env.sh
-rw-r--r-- 1 anand_vihar anand_vihar  4113 Nov 14 02:50 mapred-queues.xml.template
-rw-r--r-- 1 anand_vihar anand_vihar   858 Apr 21 13:19 mapred-site.xml
-rw-r--r-- 1 anand_vihar anand_vihar   758 Nov 14 02:50 mapred-site.xml.template~
-rw-r--r-- 1 anand_vihar anand_vihar    10 Nov 14 02:50 slaves
-rw-r--r-- 1 anand_vihar anand_vihar  2316 Nov 14 02:50 ssl-client.xml.example
-rw-r--r-- 1 anand_vihar anand_vihar  2268 Nov 14 02:50 ssl-server.xml.example
-rw-r--r-- 1 anand_vihar anand_vihar  2237 Nov 14 02:50 yarn-env.cmd
-rw-r--r-- 1 anand_vihar anand_vihar  4567 Nov 14 02:50 yarn-env.sh
-rw-r--r-- 1 anand_vihar anand_vihar   809 Apr 21 13:20 yarn-site.xml
-rw-r--r-- 1 anand_vihar anand_vihar   690 Nov 14 02:50 yarn-site.xml~
anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc/hadoop$ cat slaves
localhost
anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc/hadoop$ 

Thanks.
Regards,

 Anand Murali  11/7, 'Anand Vihar', Kandasamy St, MylaporeChennai - 600 004, IndiaPh: (044)-
28474593/ 43526162 (voicemail) 


     On Wednesday, April 22, 2015 2:41 PM, Anand Murali <anand_vihar@yahoo.com> wrote:
   

 Ok thanks will do

Sent from my iPhone
On 22-Apr-2015, at 2:39 pm, sandeep vura <sandeepvura@gmail.com> wrote:


hosts file will be available in /etc directory please check once.
On Wed, Apr 22, 2015 at 2:36 PM, Anand Murali <anand_vihar@yahoo.com> wrote:

I don't seem to have etc/host

Sent from my iPhone
On 22-Apr-2015, at 2:30 pm, sandeep vura <sandeepvura@gmail.com> wrote:


Hi Anand,
comment the ip address - 127.0.1.1 in /etc/hostsadd the following ip address - 127.0.0.1  localhost
 in /etc/hosts.
Restart your hadoop cluster after made changes in /etc/hosts
Regards,Sandeep.v
On Wed, Apr 22, 2015 at 2:16 PM, Anand Murali <anand_vihar@yahoo.com> wrote:

Dear All:
Has anyone encountered this error and if so how have you fixed it other then re-installing
Hadoop or re-starting start-dfs.sh when you have already started after boot. Find below
anand_vihar@Latitude-E5540:~$ ssh localhost
Welcome to Ubuntu 14.10 (GNU/Linux 3.16.0-34-generic x86_64)

 * Documentation:  https://help.ubuntu.com/

1 package can be updated.
1 update is a security update.

Last login: Wed Apr 22 13:33:26 2015 from localhost
anand_vihar@Latitude-E5540:~$ cd hadoop-2.6.0
anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ . .hadoop
/home/anand_vihar/hadoop-2.6.0
/home/anand_vihar/jdk1.7.0_75
/home/anand_vihar/hadoop-2.6.0
anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ hadoop version
Hadoop 2.6.0
Subversion https://git-wip-us.apache.org/repos/asf/hadoop.git -r e3496499ecb8d220fba99dc5ed4c99c8f9e33bb1
Compiled by jenkins on 2014-11-13T21:10Z
Compiled with protoc 2.5.0
>From source with checksum 18e43357c8f927c0695f1e9522859d6a
This command was run using /home/anand_vihar/hadoop-2.6.0/share/hadoop/common/hadoop-common-2.6.0.jar
anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ start-dfs.sh
Starting namenodes on [localhost]
localhost: starting namenode, logging to /home/anand_vihar/hadoop-2.6.0/logs/hadoop-anand_vihar-namenode-Latitude-E5540.out
localhost: starting datanode, logging to /home/anand_vihar/hadoop-2.6.0/logs/hadoop-anand_vihar-datanode-Latitude-E5540.out
Starting secondary namenodes [0.0.0.0]
0.0.0.0: starting secondarynamenode, logging to /home/anand_vihar/hadoop-2.6.0/logs/hadoop-anand_vihar-secondarynamenode-Latitude-E5540.out
anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ hdfs dfs -ls
ls: Call From Latitude-E5540/127.0.1.1 to localhost:9000 failed on connection exception: java.net.ConnectException:
Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused
anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ 



I have checked http://wiki.apache.org/hadoop/ConnectionRefused but there is no fix to the
problem rather it seems to be a Ubuntu network problem. I have many times killed nanenode/datanode/secondary
data note, shutdown and restarted, but this error still appears. The only way seems to be
re-installing hadoop. Please advise or refer.
Many thanks,
Regards,


 Anand Murali  11/7, 'Anand Vihar', Kandasamy St, MylaporeChennai - 600 004, IndiaPh: (044)-
28474593/ 43526162 (voicemail)







   



   








  
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