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Full Discussion: DNS problem : ping doesn't recognize hostname
Special Forums IP Networking DNS problem : ping doesn't recognize hostname Post 302966544 by hiten.r.chauhan on Saturday 13th of February 2016 07:28:06 AM
Old 02-13-2016
Network
ping to 192.168.5.1 from RHEL works

Code:
[root@rhel7 ~]# ping 192.168.5.1
PING 192.168.5.1 (192.168.5.1) 56(84) bytes of data.
64 bytes from 192.168.5.1: icmp_seq=1 ttl=64 time=0.588 ms
64 bytes from 192.168.5.1: icmp_seq=2 ttl=64 time=0.566 ms
64 bytes from 192.168.5.1: icmp_seq=3 ttl=64 time=0.829 ms
^C
--- 192.168.5.1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 0.566/0.661/0.829/0.119 ms
[root@rhel7 ~]#

The host PC ( windows - acer ) where VM is installed maintains the list of hostname and ips in its host file. As such it is not a "so called DNS server", but since it maintains the list in host file and 192.168.5.1 is specified as name server then my understanding is that it should search in the host file of acer ( 192.168.5.1)

As per your recommendation I have added acer in the host file of RHEL.
RHEL host file now looks like.

Code:
[root@rhel7 ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.5.1     acer
192.168.5.128   rhel7
[root@rhel7 ~]#

Now the ping using hostname works fine

Code:
[root@rhel7 ~]# ping acer
PING acer (192.168.5.1) 56(84) bytes of data.
64 bytes from acer (192.168.5.1): icmp_seq=1 ttl=64 time=0.523 ms
64 bytes from acer (192.168.5.1): icmp_seq=2 ttl=64 time=0.653 ms
64 bytes from acer (192.168.5.1): icmp_seq=3 ttl=64 time=0.608 ms
^C
--- acer ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 0.523/0.594/0.653/0.060 ms
[root@rhel7 ~]#

But I have one more entry of ubuntu in host file of acer ( 192.168.5.1 ) . Host file of acer looks like
Code:
192.168.5.1      acer
192.168.5.128 rhel7
192.168.5.129 ubuntu15

ping to ubuntu does not work from rhel7

[root@rhel7 ~]# ping ubuntu15
ping: unknown host ubuntu15
[root@rhel7 ~]#
Last edited by hiten.r.chauhan; 02-13-2016 at 08:47 AM..
 

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LEARN ABOUT DEBIAN

vmblock

VMBLOCK(9)							   Open VM Tools							VMBLOCK(9)

NAME

       vmblock - vmware kernel module

SYNOPSIS

       modprobe vmblock

DESCRIPTION

       This  is a kernel filesystem module. Ideally, it should be loaded before any of the Tools userlevel components are allowed to start, though
       vmblock itself has no dependencies. When loaded, vmblock will establish itself in /proc/fs/vmblock and create two nodes	therein,  dev  and
       mountPoint. Before mounting a vmblock filesystem, ensure that /tmp/VMwareDnD exists as a directory with permissions 1777, otherwise host to
       guest drag n' drop operations won't work.

       To mount, issue:

	    mount -t vmblock none /proc/fs/vmblock/mountPoint

       Once mounted, vmware-user(1) can begin to make use of vmblock to assist with DnD operations. Note that  while  vmware-user(1)  is  running,
       it'll  keep  an	open  file  descriptor on /proc/fs/vmblock/dev, and thus all vmware-user(1) instances must be killed to unmount and unload
       vmblock.

OPTIONS

       vmblock has no options.

SEE ALSO

       vmware-checkvm(1)
       vmware-hgfsclient(1)
       vmware-toolbox(1)
       vmware-toolbox-cmd(1)
       vmware-user(1)
       vmware-xferlogs(1)
       libguestlib(3)
       libvmtools(3)
       vmware-guestd(8)
       vmware-hgfsmounter(8)
       vmware-user-suid-wrapper(8)
       vmci(9)
       vmhgfs(9)
       vmmemctl(9)
       vmsock(9)
       vmsync(9)
       vmxnet(9)
       vmxnet3(9)

HOMEPAGE

       More information about vmblock and the Open VM Tools can be found at <http://open-vm-tools.sourceforge.net/>.

AUTHOR

       Open VM Tools were written by VMware, Inc. <http://www.vmware.com/>.

       This manual page was put together from homepage materials by Daniel  Baumann  <daniel.baumann@progress-technologies.net>,  for  the  Debian
       project (but may be used by others).

2010.03.20-243334						    2010-04-08								VMBLOCK(9)
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