I already provide the same permissions, kindly have a look,  
Still forwarder is not sending the data.. kindly guide.. 
 drwx------ 2 splunk splunk 4096 Oct 16  2016 /opt/splunkforwarder/var/log/introspection  
drwx------ 2 splunk splunk 4096 Jul  5 22:02 /opt/splunkforwarder/var/log/splunk  
 lnx0591:root# ls -ltr  
total 261064  
-rw------- 1 splunk splunk        0 Oct 16  2016 splunkd_ui_access.log  
-rw------- 1 splunk splunk        0 Oct 16  2016 searchhistory.log  
-rw------- 1 splunk splunk        0 Oct 16  2016 scheduler.log  
-rw------- 1 splunk splunk        0 Oct 16  2016 remote_searches.log  
-rw------- 1 splunk splunk        0 Oct 16  2016 mongod.log  
-rw------- 1 splunk splunk        0 Oct 16  2016 license_usage.log  
-rw------- 1 splunk splunk        0 Oct 16  2016 license_audit.log  
-rw------- 1 splunk splunk       64 Oct 16  2016 first_install.log  
-rw------- 1 splunk splunk     5817 Jan  9 15:54 splunkd_access.log  
-rw------- 1 splunk splunk 25000073 Jan 22 19:58 splunkd.log.5  
-rw------- 1 splunk splunk 25000123 Mar 12 09:45 splunkd.log.4  
-rw------- 1 splunk splunk 25000040 Apr 29 00:53 splunkd.log.3  
-rw------- 1 splunk splunk      299 Jun 14 14:45 splunkd_stdout.log  
-rw------- 1 splunk splunk 25000178 Jun 15 10:19 splunkd.log.2  
-rw------- 1 splunk splunk 25000171 Jun 26 19:25 metrics.log.5  
-rw------- 1 splunk splunk     5825 Jun 28 10:41 splunkd-utility.log  
-rw------- 1 splunk splunk      296 Jun 28 10:41 btool.log  
-rw------- 1 splunk splunk      482 Jun 28 10:41 splunkd_stderr.log  
-rw------- 1 splunk splunk     1336 Jun 28 10:46 conf.log  
-rw------- 1 splunk splunk 25000124 Jun 29 02:02 metrics.log.4  
-rw------- 1 splunk splunk 25000107 Jun 29 04:23 splunkd.log.1  
-rw------- 1 splunk splunk   160573 Jul  1 03:38 audit.log  
-rw------- 1 splunk splunk 25000011 Jul  1 08:44 metrics.log.3  
-rw------- 1 splunk splunk 25000141 Jul  3 15:25 metrics.log.2  
-rw------- 1 splunk splunk 25000088 Jul  5 22:02 metrics.log.1  
-rw------- 1 splunk splunk  3887362 Jul  6 06:32 metrics.log  
-rw------- 1 splunk splunk 12901867 Jul  6 06:32 splunkd.log  
lnx0591:root#  
 lnx0591:root# ls -lR  /opt/splunkforwarder/var/log/  
/opt/splunkforwarder/var/log/:  
total 8  
drwx------ 2 splunk splunk 4096 Oct 16  2016 introspection  
drwx------ 2 splunk splunk 4096 Jul  5 22:02 splunk 
 /opt/splunkforwarder/var/log/introspection:  
total 5028  
-rw------- 1 splunk splunk 5133404 Jul  6 06:41 disk_objects.log  
-rw------- 1 splunk splunk       0 Oct 16  2016 kvstore.log  
-rw------- 1 splunk splunk       0 Oct 16  2016 resource_usage.log 
 /opt/splunkforwarder/var/log/splunk:  
total 261140  
-rw------- 1 splunk splunk   160573 Jul  1 03:38 audit.log  
-rw------- 1 splunk splunk      296 Jun 28 10:41 btool.log  
-rw------- 1 splunk splunk     1336 Jun 28 10:46 conf.log  
-rw------- 1 splunk splunk       64 Oct 16  2016 first_install.log  
-rw------- 1 splunk splunk        0 Oct 16  2016 license_audit.log  
-rw------- 1 splunk splunk        0 Oct 16  2016 license_usage.log  
-rw------- 1 splunk splunk  3953315 Jul  6 06:41 metrics.log  
-rw------- 1 splunk splunk 25000088 Jul  5 22:02 metrics.log.1  
-rw------- 1 splunk splunk 25000141 Jul  3 15:25 metrics.log.2  
-rw------- 1 splunk splunk 25000011 Jul  1 08:44 metrics.log.3  
-rw------- 1 splunk splunk 25000124 Jun 29 02:02 metrics.log.4  
-rw------- 1 splunk splunk 25000171 Jun 26 19:25 metrics.log.5  
-rw------- 1 splunk splunk        0 Oct 16  2016 mongod.log  
-rw------- 1 splunk splunk        0 Oct 16  2016 remote_searches.log  
-rw------- 1 splunk splunk        0 Oct 16  2016 scheduler.log  
-rw------- 1 splunk splunk        0 Oct 16  2016 searchhistory.log  
-rw------- 1 splunk splunk     5817 Jan  9 15:54 splunkd_access.log  
-rw------- 1 splunk splunk 12912781 Jul  6 06:40 splunkd.log  
-rw------- 1 splunk splunk 25000107 Jun 29 04:23 splunkd.log.1  
-rw------- 1 splunk splunk 25000178 Jun 15 10:19 splunkd.log.2  
-rw------- 1 splunk splunk 25000040 Apr 29 00:53 splunkd.log.3  
-rw------- 1 splunk splunk 25000123 Mar 12 09:45 splunkd.log.4  
-rw------- 1 splunk splunk 25000073 Jan 22 19:58 splunkd.log.5  
-rw------- 1 splunk splunk      482 Jun 28 10:41 splunkd_stderr.log  
-rw------- 1 splunk splunk      299 Jun 14 14:45 splunkd_stdout.log  
-rw------- 1 splunk splunk        0 Oct 16  2016 splunkd_ui_access.log  
-rw------- 1 splunk splunk     5825 Jun 28 10:41 splunkd-utility.log  
lnx0591:root#  
						
					
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