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

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

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 -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 <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
>>> -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
>>> -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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