[Gluster-users] Glusterfs fuse uses system ports to mount remote bricks

[Canh Ngo]

Hi all,

We run a storage cluster using GlusterFS v3.10.12 on CentOS7. Clients
(CentOS) are using glusterfs 3.8.4.

We notice when clients mounts bricks of a volume, sometimes glusterfs uses
system ports (i.e. in port range 0-1024) to connect to remote glusterfsd
port. e.g:

Server:
tcp        0      0 10.165.210.169:49161    10.165.210.51:850
ESTABLISHED 32760/glusterfsd

Client:
tcp        0      0 10.165.210.51:850       10.165.210.169:49161
ESTABLISHED 25483/glusterfs

Thus, sometimes glusterfs occupies our system ports (e.g. 995, 179, 443,
etc), that causes other services cannot start.

Is is a bug or an expected behavior? I expect glusterfs should use IANA
private ports rather than system ports. Do you know if we can configure
glusterfs to use a specific port range?

​Thanks,
Canh Ngo.
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