[Gluster-users] GlusterFS Mounts at startup consuming needed local ports for host services

[Prasanna Kalever]

Hi Rayan,

1. I need to accept this, currently
/proc/sys/net/ipv4/ip_local_port_range was not taken care in
glusterfs, I shall soon patch it with the required changes which will
then start respecting 'ip_local_port_range'

2. Chen Chen observations were right! we have moved to bind insecure
around 3.7.2 period with which we try to fetch a port from 65535 -
down, because of which he observed mount is only using port 60000+,
but in your case you are in 3.6.0 hence client ports start from 1023
if I am not wrong!

3. For now a quick work around could be

        3.1. Specify your ports in
'/proc/sys/net/ipv4/ip_local_reserved_ports', glusterfs ensure not to
bind on the ports mentioned in 'ip_local_reserved_ports' which you may
wish to use them for other services.

The below command helps in doing so:

# sysctl -w net.ipv4.ip_local_reserved_ports=1002

        3.2. As you rightly said, start all non-gluster services then
at last start mounting glusterfs

Thanks,
--
Prasanna


On Sun, Apr 10, 2016 at 7:03 PM, Chen Chen <chenchen at smartquerier.com> wrote:
> Hi Ryan,
>
> In my case, glusterfs didn't use any port below 10000. The output is
> attached.
> Maybe you could deploy a new test client with Gluster 3.6.9 and see if it
> helps.
>
> (Resend into list.)
>
> Best wishes,
> Chen
>
>
> On 4/10/2016 2:13 AM, Ryan.J.Wyler at wellsfargo.com wrote:
>>
>> Chen,
>>
>> Can you check and see what lsof outputs for glusterfs?
>>
>> # lsof -i | grep ^glusterfs
>> glusterfs  2893    root    9u  IPv4  15373      0t0  TCP
>> client.domain.com:1023->server1.domain.com:24007 (ESTABLISHED)
>>
>> see how my client uses local port 1023?
>>
>> Ryan
>>
>> -----Original Message-----
>> From: gluster-users-bounces at gluster.org
>> [mailto:gluster-users-bounces at gluster.org] On Behalf Of Chen Chen
>> Sent: Saturday, April 09, 2016 9:20 AM
>> To: gluster-users at gluster.org
>> Subject: Re: [Gluster-users] GlusterFS Mounts at startup consuming needed
>> local ports for host services
>>
>> My gluster mount is only using port 60000+. I was using 3.7.6 and now
>> using 3.7.9.
>>
>> Chen
>>
>> On 4/9/2016 11:00 PM, Ryan.J.Wyler at wellsfargo.com wrote:
>>>
>>> Is there any way to configure glusterfs to avoid using specific local
>>> ports when mounting filesystems?
>>>
>>> Ryan Wyler
>>
>> --
>> Chen Chen
>> Shanghai SmartQuerier Biotechnology Co., Ltd.
>> Add: Room 410, 781 Cai Lun Road, China (Shanghai) Pilot Free Trade Zone
>>          Shanghai 201203, P. R. China
>> Mob: +86 15221885893
>> Email: chenchen at smartquerier.com
>> Web: www.smartquerier.com
>>
>
> --
> Chen Chen
> 上海慧算生物技术有限公司
>
> Shanghai SmartQuerier Biotechnology Co., Ltd.
> Add: Room 410, 781 Cai Lun Road, China (Shanghai) Pilot Free Trade Zone
>         Shanghai 201203, P. R. China
> Mob: +86 15221885893
> Email: chenchen at smartquerier.com
> Web: www.smartquerier.com
>
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