Re: [MooseFS-users] mfsmount error on CentOS 7

[Steve W. <st...@pu...>]

Hi,

Oops... it turns out that this is a false alarm!  I found a typo in my 
hosts file which was the source of this problem.  After correcting the 
typo, I'm able to successfully mount using the -B (mfsbind) option as 
before.

Thanks for your replies and sorry for the false alarm.

Kind regards,
Steve

On 01/28/2015 11:05 AM, Krzysztof Kielak wrote:
> Steve,
>
> We’ll look into your case in more details first thing in the morning 
> (CET time) tomorrow and we’ll fix it, if it’s broken on our side.
>
> When it comes to binding on a client side, I can quote Richard Stevens 
> from book “UNIX Network Programming: The Sockets Networking API” that 
> says:
>
> /“Normally, a TCP client does not bind an IP address to its socket. 
> The kernel chooses the source IP address when the socket is connected, 
> based on the outgoing interface that is used, which in turn is based 
> on the route required to reach the server”/
>
> From the above you should be fine without binding, but of course - as 
> I mentioned earlier - we’ll check CentOS 7 here and we’ll keep you posted.
>
> Best Regards,
> Krzysztof Kielak
> *Director of Operations and Customer Support*
> Mobile: +48 601 476 440
>
>
>
>> On 28 Jan 2015, at 16:09, Steve Wilson <st...@pu... 
>> <mailto:st...@pu...>> wrote:
>>
>> I have a generic script that is used for mounting MooseFS filesystems 
>> on my workstations.  Some of the workstations have multiple IP 
>> addresses, including those workstations that also double as a MooseFS 
>> master server.  These will have a master server IP address along with 
>> their normal IP address that can easily be moved to another 
>> workstation (i.e., the metalogger server) when I want that 
>> workstation to become the master server.
>>
>> So the script I use supplies the default hostname (as given by 
>> /bin/hostname) to the -B option of mfsmount. And, like I mentioned 
>> earlier, this has been working quite successfully for several years 
>> up until this installation of CentOS 7.
>>
>> I did find that using the IP address instead of the hostname does 
>> work correctly so I'll probably change my scripts to use an IP address:
>>> [root@sbmonitor mnt]# mfsmount /mnt/mfs -B10.145.7.33 
>>> -Hsb-data.bio.purdue.edu <http://Hsb-data.bio.purdue.edu> -S/cosit
>>> mfsmaster accepted connection with parameters: 
>>> read-write,restricted_ip ; root mapped to root:root
>>
>> Thanks,
>> Steve
>>
>> On 01/28/2015 09:32 AM, Aleksander Wieliczko wrote:
>>> Hi
>>> What is the reason that you want to use different IP address for 
>>> client binding, than your default NIC ip?
>>>
>>> -B IP option is the same as -o mfsbind=IP  ---define source ip 
>>> address for connections (default: NOT DEFINED - chosen automatically 
>>> by OS)
>>>
>>> Best regards
>>> Aleksander Wieliczko
>>> Technical Support Engineer
>>> MooseFS.com <x-msg://26/moosefs.com>
>>>
>>> On 01/28/2015 03:08 PM, Steve Wilson wrote:
>>>> Hi,
>>>>
>>>> When using the -B option to mfsmount after upgrading to CentOS 7, I get
>>>> the following error:
>>>>> [root@sbmonitor mnt]# mfsmount /mnt/mfs -Bsbmonitor.bio.purdue.edu  <http://Bsbmonitor.bio.purdue.edu>  
>>>>> -Hsb-data.bio.purdue.edu  <http://Hsb-data.bio.purdue.edu>  -S/cosit
>>>>> can't bind socket to given ip ("10.147.7.33")
>>>> This same command works on CentOS 6, RHEL 6, Ubuntu 12.04, and Ubuntu
>>>> 14.04 but doesn't work on CentOS 7.  This is my first CentOS 7
>>>> installation so I'm still learning its subtle and not-so-subtle
>>>> differences.  I'm not sure if this is a problem with my CentOS 7
>>>> configuration or a MooseFS problem.
>>>>
>>>> If I attempt to perform the mount without the -B option, it works fine:
>>>>> [root@sbmonitor mnt]# mfsmount /mnt/mfs -Bsbmonitor.bio.purdue.edu  <http://Bsbmonitor.bio.purdue.edu>  
>>>>> -Hsb-data.bio.purdue.edu  <http://Hsb-data.bio.purdue.edu>  -S/cosit
>>>>> can't bind socket to given ip ("10.147.7.33")
>>>> Any ideas what the problem could be?  Can anyone reproduce this on
>>>> another CentOS 7 or RHEL 7 installation?
>>>>
>>>> Thanks!
>>>>
>>>> Steve
>>>>
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