[Gluster-users] Gluster 10 used ports

[Alan Orth]

Hi Marcus,

I'm noticing that too. It seems the previous brick port behavior changed in
GlusterFS 10 and the change was poorly communicated. The admin docs¹ have
this note:

> From Gluster-10 onwards, the brick ports will be randomized. A port is
randomly selected within the range of base_port to max_port as defined in
glusterd.vol file and then assigned to the brick.

The variables are actually "base-port" and "max-port" (not "base_port"),
and it seems to be:

# grep -rsI -E '(base|max)-port' /etc/glusterfs/
/etc/glusterfs/glusterd.vol:#   option base-port 49152
/etc/glusterfs/glusterd.vol:    option max-port  60999

This change was not announced in the GlusterFS 10 release announcement²,
though there's a link to a related issue about randomizing port selection
during startup³:

> Randomized port selection for bricks, improves startup time #786
<https://github.com/gluster/glusterfs/issues/786>

I updated my firewall and now clients can mount volumes. The docs should be
updated here if anyone feels like making a pull request:

-
https://github.com/gluster/glusterdocs/blob/master/docs/Administrator-Guide/Setting-Up-Clients.md
-
https://github.com/gluster/glusterdocs/blob/master/docs/release-notes/10.0.md

Regards,

¹
https://docs.gluster.org/en/main/Administrator-Guide/Setting-Up-Clients/#installing-the-gluster-native-client
² https://docs.gluster.org/en/main/release-notes/10.0/
³ https://github.com/gluster/glusterfs/issues/786

On Mon, Nov 29, 2021 at 6:54 AM Marcus Pedersén <marcus.pedersen at slu.se>
wrote:

> Hi all,
>
> Over the years I have been using the same ports in my firewall
> for gluster 49152-49251 ( I know a bit too many ports but
> local network with limited access)
>
> Today I upgraded from version 9 to version 10 and it finally
> went well until I ran:
> gluster volume heal my-vol info summary
> I got the answer:
> Status: Transport endpoint is not connected
>
> I realized that glusterfsd was using 50000+ ports so
> I opened up more ports and it works fine again.
>
> Are the port changes something new in gluster 10?
>
> I browsed through the doc and search online without
> finding any info.
>
> Which are the correct ports to open up in my firewall?
>
> Running on debian bullseye.
>
> Thanks alot in advance!!
>
> Best regards
> Marcus
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-- 
Alan Orth
alan.orth at gmail.com
https://picturingjordan.com
https://englishbulgaria.net
https://mjanja.ch
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