Re: [Gluster-users] Some questions about GlusterFS and Prod Environment

[Riccardo Filippone]

Hi Doug, first of all, thank you for your reply.

1) Considering 2 Frontends and 2 Gluster FS Nodes, the best practice is to
>> write a different fstab entry for each node?
>>
>
> I don't see why you'd need that. The only differences you might have would
> be if you're mounting different volumes on different servers.
> You could homogenise that even further by simply using *localhost*
> instead of the server's FQDN.
>

Ok


>
>
>> Frontend1 (mount the first gluster node, and the second one as backup
>> volume):
>> gluster1.droplet.com:/app_volume /var/www/html glusterfs
>> defaults,_netdev,backupvolfile-server=gluster2.droplet.com 0 0
>>
>> Frontend2 /etc/fstab (mount the second gluster node, and the first one as
>> backup volume):
>> gluster2.droplet.com:/app_volume /var/www/html glusterfs
>> defaults,_netdev,backupvolfile-server=gluster1.droplet.com 0 0
>>
>
> On the more recent versions (3.7+ at least), if you're mounting through
> fuse you no longer need to define backup servers, gluster deals with that
> internally. One mount option I would add would be "relatime".
>

Thank you for this suggestion, so I'm considering to use FUSE now.


> 2) I want to backup every day the volume files. I can run a zip command
>> directly from the gluster node, or I need to mount it on the backup server
>> than run the command? Is there any other good solution to store a backup?
>>
>
> I don't see it'd make much difference. If it's lots of small files though,
> there could be a performance hit. If it did become an issue, it might be
> more efficient exporting snapshots (assuming your bricks are backed by LVM.
> ZFS would make it even easier).
>

Ok


> 3) Can I share WebApps folder between Tomcat servers? Is there any known
>> issue? (for example putting a .war into the WebApps folder, I think I'll
>> generate some errors due to tomcat war deploying? Anyone have experiences
>> with tomcat and glusterfs shared folders?)
>>
>> 4) Can I use a load balancer software to mount GlusterFS volumes? If YES,
>> is there any benefits?
>>
>
>  Again, no need. The replica translator does that for you.
>

Perfect, but I don't understand if it could be a good idea share the
WebApps folder, using a volume (called webapps) for all tomcats (so we can
deploy only one time).

Thank you in advance, on next week, we are going to start the activities :)

regards,

Riccardo
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Re: [Gluster-users] Some questions about GlusterFS and Prod Environment

[Gambit15]

Hi Riccardo,

On 3 February 2017 at 07:06, Riccardo Filippone  wrote:

> Good morning guys,
>
> we are going to deploy a new production infrastructure.
>
> in order to share some folders through our app servers (Tomcat 8), I wan
> to create a GlusterFS storage area.
>
> I made some tests in localhost (using some VMs), but at the moment only
> with Apache2.
>
> My configuration is a mirroring replica (1:1).
>
> *My questions are:*
>
> 1) Considering 2 Frontends and 2 Gluster FS Nodes, the best practice is to
> write a different fstab entry for each node?
>

I don't see why you'd need that. The only differences you might have would
be if you're mounting different volumes on different servers.
You could homogenise that even further by simply using *localhost* instead
of the server's FQDN.


> Frontend1 (mount the first gluster node, and the second one as backup
> volume):
> gluster1.droplet.com:/app_volume /var/www/html glusterfs
> defaults,_netdev,backupvolfile-server=gluster2.droplet.com 0 0
>
> Frontend2 /etc/fstab (mount the second gluster node, and the first one as
> backup volume):
> gluster2.droplet.com:/app_volume /var/www/html glusterfs
> defaults,_netdev,backupvolfile-server=gluster1.droplet.com 0 0
>

On the more recent versions (3.7+ at least), if you're mounting through
fuse you no longer need to define backup servers, gluster deals with that
internally. One mount option I would add would be "relatime".


2) I want to backup every day the volume files. I can run a zip command
> directly from the gluster node, or I need to mount it on the backup server
> than run the command? Is there any other good solution to store a backup?
>

I don't see it'd make much difference. If it's lots of small files though,
there could be a performance hit. If it did become an issue, it might be
more efficient exporting snapshots (assuming your bricks are backed by LVM.
ZFS would make it even easier).



> 3) Can I share WebApps folder between Tomcat servers? Is there any known
> issue? (for example putting a .war into the WebApps folder, I think I'll
> generate some errors due to tomcat war deploying? Anyone have experiences
> with tomcat and glusterfs shared folders?)
>
> 4) Can I use a load balancer software to mount GlusterFS volumes? If YES,
> is there any benefits?
>

 Again, no need. The replica translator does that for you.



> Thank you in advance for your answers,
>
> best regads, have a nice day,
>
> Riccardo
>
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>

Doug
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[Gluster-users] Some questions about GlusterFS and Prod Environment

[Riccardo Filippone]

Good morning guys,

we are going to deploy a new production infrastructure.

in order to share some folders through our app servers (Tomcat 8), I wan to
create a GlusterFS storage area.

I made some tests in localhost (using some VMs), but at the moment only
with Apache2.

My configuration is a mirroring replica (1:1).

*My questions are:*

1) Considering 2 Frontends and 2 Gluster FS Nodes, the best practice is to
write a different fstab entry for each node?
Frontend1 (mount the first gluster node, and the second one as backup
volume):
gluster1.droplet.com:/app_volume /var/www/html glusterfs
defaults,_netdev,backupvolfile-server=gluster2.droplet.com 0 0

Frontend2 /etc/fstab (mount the second gluster node, and the first one as
backup volume):
gluster2.droplet.com:/app_volume /var/www/html glusterfs
defaults,_netdev,backupvolfile-server=gluster1.droplet.com 0 0


2) I want to backup every day the volume files. I can run a zip command
directly from the gluster node, or I need to mount it on the backup server
than run the command? Is there any other good solution to store a backup?

3) Can I share WebApps folder between Tomcat servers? Is there any known
issue? (for example putting a .war into the WebApps folder, I think I'll
generate some errors due to tomcat war deploying? Anyone have experiences
with tomcat and glusterfs shared folders?)

4) Can I use a load balancer software to mount GlusterFS volumes? If YES,
is there any benefits?

Thank you in advance for your answers,

best regads, have a nice day,

Riccardo
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