Re: [ovirt-users] Help understanding Gluster in oVirt

2015-03-04 Thread Eduardo Ramos
I have setup an environment with 8 glustefs nodes in 
distributed+replicated mode. Instead of CTDB, I'm using keepalived. It 
works pretty well.


On 02/04/2015 04:14 PM, Donny Davis wrote:


I have two nodes running the hosted engine and gluster setup for 
replicate between them. Mounting to localhost seems to be working so 
far. I have live migrated the engine, pulled the plug on a running 
node, and rebooted each node to ensure it all works properly. I have 
had few issues with this setup. I didn’t like ctdb because it adds 
another layer of complexity that is unnecessary for MY setup.


Node1 gluster drive on sdb

Node2 gluster drive on sdb

Both replicate and are the same make and model drive.

ovirt-ha running on both for hosted-engine

This setup is for hosted engine only, my actual storage for VM’s and 
what not do not run in this fashion.


Hope This helps

Donny D

*From:*users-boun...@ovirt.org [mailto:users-boun...@ovirt.org] *On 
Behalf Of *Groten, Ryan

*Sent:* Wednesday, February 4, 2015 10:11 AM
*To:* Sahina Bose; users@ovirt.org
*Subject:* Re: [ovirt-users] Help understanding Gluster in oVirt

Nope in fact I followed the guide and found CTDB works quite well.  I 
am just trying to figure out the benefit because that would be another 
component to consider in the architecture.


*From:*Sahina Bose [mailto:sab...@redhat.com]
*Sent:* Tuesday, February 03, 2015 4:09 AM
*To:* Groten, Ryan; users@ovirt.org mailto:users@ovirt.org
*Subject:* Re: [ovirt-users] Help understanding Gluster in oVirt

On 01/28/2015 08:59 AM, Groten, Ryan wrote:

I was planning on making a Gluster Data domain to test, and found
some great information on this page:
http://community.redhat.com/blog/2014/05/ovirt-3-4-glusterized/

The article the author uses the CTDB service for VIP failover.  Is
it possible/recommended to not do this, and just create a gluster
volume on all the hosts in a cluster, then create the Gluster data
domain as localhost:gluster_vol?


Theoretically, it should work - if you make sure that you have a 
replica 3 gluster volume spread across 3 nodes, and these 3 nodes are 
your compute nodes as well - you should be fine without CTDB setup for 
failover and mounting as localhost.


But I've not tried this to recommend it. Maybe if others have tried 
it, they can chime in?


Btw, is there any reason you do not want to set up CTDB?

Thanks,

Ryan

ThTh

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Re: [ovirt-users] Help understanding Gluster in oVirt

2015-02-04 Thread Groten, Ryan
Nope in fact I followed the guide and found CTDB works quite well.  I am just 
trying to figure out the benefit because that would be another component to 
consider in the architecture.

From: Sahina Bose [mailto:sab...@redhat.com]
Sent: Tuesday, February 03, 2015 4:09 AM
To: Groten, Ryan; users@ovirt.org
Subject: Re: [ovirt-users] Help understanding Gluster in oVirt


On 01/28/2015 08:59 AM, Groten, Ryan wrote:
I was planning on making a Gluster Data domain to test, and found some great 
information on this page: 
http://community.redhat.com/blog/2014/05/ovirt-3-4-glusterized/
The article the author uses the CTDB service for VIP failover.  Is it 
possible/recommended to not do this, and just create a gluster volume on all 
the hosts in a cluster, then create the Gluster data domain as 
localhost:gluster_vol?

Theoretically, it should work - if you make sure that you have a replica 3 
gluster volume spread across 3 nodes, and these 3 nodes are your compute nodes 
as well - you should be fine without CTDB setup for failover and mounting as 
localhost.

But I've not tried this to recommend it. Maybe if others have tried it, they 
can chime in?

Btw, is there any reason you do not want to set up CTDB?



Thanks,
Ryan
ThTh



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Re: [ovirt-users] Help understanding Gluster in oVirt

2015-02-04 Thread Donny Davis
I have two nodes running the hosted engine and gluster setup for replicate
between them. Mounting to localhost seems to be working so far. I have live
migrated the engine, pulled the plug on a running node, and rebooted each
node to ensure it all works properly. I have had few issues with this setup.
I didn't like ctdb because it adds another layer of complexity that is
unnecessary for MY setup.

 

Node1 gluster drive on sdb 

Node2 gluster drive on sdb

 

Both replicate and are the same make and model drive. 

 

ovirt-ha running on both for hosted-engine

 

This setup is for hosted engine only, my actual storage for VM's and what
not do not run in this fashion. 

 

 

Hope This helps

 

Donny D

 

From: users-boun...@ovirt.org [mailto:users-boun...@ovirt.org] On Behalf Of
Groten, Ryan
Sent: Wednesday, February 4, 2015 10:11 AM
To: Sahina Bose; users@ovirt.org
Subject: Re: [ovirt-users] Help understanding Gluster in oVirt

 

Nope in fact I followed the guide and found CTDB works quite well.  I am
just trying to figure out the benefit because that would be another
component to consider in the architecture.

 

From: Sahina Bose [mailto:sab...@redhat.com] 
Sent: Tuesday, February 03, 2015 4:09 AM
To: Groten, Ryan; users@ovirt.org
Subject: Re: [ovirt-users] Help understanding Gluster in oVirt

 

 

On 01/28/2015 08:59 AM, Groten, Ryan wrote:

I was planning on making a Gluster Data domain to test, and found some great
information on this page:
http://community.redhat.com/blog/2014/05/ovirt-3-4-glusterized/

The article the author uses the CTDB service for VIP failover.  Is it
possible/recommended to not do this, and just create a gluster volume on all
the hosts in a cluster, then create the Gluster data domain as
localhost:gluster_vol?


Theoretically, it should work - if you make sure that you have a replica 3
gluster volume spread across 3 nodes, and these 3 nodes are your compute
nodes as well - you should be fine without CTDB setup for failover and
mounting as localhost.

But I've not tried this to recommend it. Maybe if others have tried it, they
can chime in?

Btw, is there any reason you do not want to set up CTDB?



 

Thanks,

Ryan

ThTh



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Users mailing list
Users@ovirt.org
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Re: [ovirt-users] Help understanding Gluster in oVirt

2015-02-04 Thread Jason Brooks


- Original Message -
 From: Ryan Groten ryan.gro...@stantec.com
 To: users@ovirt.org
 Sent: Tuesday, January 27, 2015 7:29:55 PM
 Subject: [ovirt-users] Help understanding Gluster in oVirt
 
 I was planning on making a Gluster Data domain to test, and found some great
 information on this page:
 http://community.redhat.com/blog/2014/05/ovirt-3-4-glusterized/
 The article the author uses the CTDB service for VIP failover.  Is it
 possible/recommended to not do this, and just create a gluster volume on all
 the hosts in a cluster, then create the Gluster data domain as
 localhost:gluster_vol?

I think that should work -- the vip is important for nfs, and since the hosted
engine requires nfs, I just use the vip for the gluster mount as well.

For 3.6, I believe gluster will be an option for the hosted engine, and so
ctdb will probably not be necessary.

Regards, Jason

 
 Thanks,
 Ryan
 
 ___
 Users mailing list
 Users@ovirt.org
 http://lists.ovirt.org/mailman/listinfo/users
 
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Re: [ovirt-users] Help understanding Gluster in oVirt

2015-02-04 Thread Donny Davis
I am using ctdb for my storage only nodes and I must be doing something wrong 
because I still have selinux problems without using gluster to replicate my 
meta data for ctdb. They are storage only so turning off selinux doesn't bother 
me quite as much. 

Ctdb does work quite well for that purpose, as its a distribute only gluster. 

BTW thank you for the tutorial, I was kinda lost with glusterfs before I read 
it. 

Donny DOn Feb 4, 2015 2:35 PM, Jason Brooks jbro...@redhat.com wrote:



 - Original Message - 
  From: Donny Davis do...@cloudspin.me 
  To: Jason Brooks jbro...@redhat.com, Ryan Groten 
  ryan.gro...@stantec.com 
  Cc: users@ovirt.org 
  Sent: Wednesday, February 4, 2015 1:02:18 PM 
  Subject: RE: [ovirt-users] Help understanding Gluster in oVirt 
  
  I am in the process of adding two more nodes to my hosted-engine setup 
  using 
  localhost as the mount point, I will report how it goes. 
  
  I guess it would really be dependent on how the system was setup. Each node 
  would have to be exactly the same to expect good results. 
  
  My major issue with ctdb is SELINUX, I cannot get it to run correctly and 
  work with SELINUX enabled. I would define that as a major security hole on 
  a 
  hypervisor, but I'm sure I am just doing it wrong. 

 Yeah, in my howto I'm using the meta volume that ctdb uses for its lock 
 file to also store the config files for ctdb, and that's what selinux 
 doesn't like. It's not really necessary, though, the configs could just 
 be copied into the default locations on each node -- I think that would 
 resolve the selinux issue. 

 Jason 

  
  
  
  Donny D 
  
  -Original Message- 
  From: users-boun...@ovirt.org [mailto:users-boun...@ovirt.org] On Behalf Of 
  Jason Brooks 
  Sent: Wednesday, February 4, 2015 12:31 PM 
  To: Ryan Groten 
  Cc: users@ovirt.org 
  Subject: Re: [ovirt-users] Help understanding Gluster in oVirt 
  
  
  
  - Original Message - 
   From: Ryan Groten ryan.gro...@stantec.com 
   To: users@ovirt.org 
   Sent: Tuesday, January 27, 2015 7:29:55 PM 
   Subject: [ovirt-users] Help understanding Gluster in oVirt 
   
   I was planning on making a Gluster Data domain to test, and found some 
   great information on this page: 
   http://community.redhat.com/blog/2014/05/ovirt-3-4-glusterized/ 
   The article the author uses the CTDB service for VIP failover.  Is it 
   possible/recommended to not do this, and just create a gluster volume 
   on all the hosts in a cluster, then create the Gluster data domain as 
   localhost:gluster_vol? 
  
  I think that should work -- the vip is important for nfs, and since the 
  hosted engine requires nfs, I just use the vip for the gluster mount as 
  well. 
  
  For 3.6, I believe gluster will be an option for the hosted engine, and so 
  ctdb will probably not be necessary. 
  
  Regards, Jason 
  
   
   Thanks, 
   Ryan 
   
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  Users@ovirt.org 
  http://lists.ovirt.org/mailman/listinfo/users 
  
  
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Re: [ovirt-users] Help understanding Gluster in oVirt

2015-02-04 Thread Jason Brooks


- Original Message -
 From: Donny Davis do...@cloudspin.me
 To: Jason Brooks jbro...@redhat.com, Ryan Groten 
 ryan.gro...@stantec.com
 Cc: users@ovirt.org
 Sent: Wednesday, February 4, 2015 1:02:18 PM
 Subject: RE: [ovirt-users] Help understanding Gluster in oVirt
 
 I am in the process of adding two more nodes to my hosted-engine setup using
 localhost as the mount point, I will report how it goes.
 
 I guess it would really be dependent on how the system was setup. Each node
 would have to be exactly the same to expect good results.
 
 My major issue with ctdb is SELINUX, I cannot get it to run correctly and
 work with SELINUX enabled. I would define that as a major security hole on a
 hypervisor, but I'm sure I am just doing it wrong.

Yeah, in my howto I'm using the meta volume that ctdb uses for its lock 
file to also store the config files for ctdb, and that's what selinux 
doesn't like. It's not really necessary, though, the configs could just
be copied into the default locations on each node -- I think that would
resolve the selinux issue.

Jason

 
 
 
 Donny D
 
 -Original Message-
 From: users-boun...@ovirt.org [mailto:users-boun...@ovirt.org] On Behalf Of
 Jason Brooks
 Sent: Wednesday, February 4, 2015 12:31 PM
 To: Ryan Groten
 Cc: users@ovirt.org
 Subject: Re: [ovirt-users] Help understanding Gluster in oVirt
 
 
 
 - Original Message -
  From: Ryan Groten ryan.gro...@stantec.com
  To: users@ovirt.org
  Sent: Tuesday, January 27, 2015 7:29:55 PM
  Subject: [ovirt-users] Help understanding Gluster in oVirt
  
  I was planning on making a Gluster Data domain to test, and found some
  great information on this page:
  http://community.redhat.com/blog/2014/05/ovirt-3-4-glusterized/
  The article the author uses the CTDB service for VIP failover.  Is it
  possible/recommended to not do this, and just create a gluster volume
  on all the hosts in a cluster, then create the Gluster data domain as
  localhost:gluster_vol?
 
 I think that should work -- the vip is important for nfs, and since the
 hosted engine requires nfs, I just use the vip for the gluster mount as
 well.
 
 For 3.6, I believe gluster will be an option for the hosted engine, and so
 ctdb will probably not be necessary.
 
 Regards, Jason
 
  
  Thanks,
  Ryan
  
  ___
  Users mailing list
  Users@ovirt.org
  http://lists.ovirt.org/mailman/listinfo/users
  
 ___
 Users mailing list
 Users@ovirt.org
 http://lists.ovirt.org/mailman/listinfo/users
 
 
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Re: [ovirt-users] Help understanding Gluster in oVirt

2015-02-04 Thread Donny Davis
I am in the process of adding two more nodes to my hosted-engine setup using
localhost as the mount point, I will report how it goes. 

I guess it would really be dependent on how the system was setup. Each node
would have to be exactly the same to expect good results. 

My major issue with ctdb is SELINUX, I cannot get it to run correctly and
work with SELINUX enabled. I would define that as a major security hole on a
hypervisor, but I'm sure I am just doing it wrong. 



Donny D

-Original Message-
From: users-boun...@ovirt.org [mailto:users-boun...@ovirt.org] On Behalf Of
Jason Brooks
Sent: Wednesday, February 4, 2015 12:31 PM
To: Ryan Groten
Cc: users@ovirt.org
Subject: Re: [ovirt-users] Help understanding Gluster in oVirt



- Original Message -
 From: Ryan Groten ryan.gro...@stantec.com
 To: users@ovirt.org
 Sent: Tuesday, January 27, 2015 7:29:55 PM
 Subject: [ovirt-users] Help understanding Gluster in oVirt
 
 I was planning on making a Gluster Data domain to test, and found some 
 great information on this page:
 http://community.redhat.com/blog/2014/05/ovirt-3-4-glusterized/
 The article the author uses the CTDB service for VIP failover.  Is it 
 possible/recommended to not do this, and just create a gluster volume 
 on all the hosts in a cluster, then create the Gluster data domain as 
 localhost:gluster_vol?

I think that should work -- the vip is important for nfs, and since the
hosted engine requires nfs, I just use the vip for the gluster mount as
well.

For 3.6, I believe gluster will be an option for the hosted engine, and so
ctdb will probably not be necessary.

Regards, Jason

 
 Thanks,
 Ryan
 
 ___
 Users mailing list
 Users@ovirt.org
 http://lists.ovirt.org/mailman/listinfo/users
 
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Re: [ovirt-users] Help understanding Gluster in oVirt

2015-02-03 Thread Sahina Bose


On 01/28/2015 08:59 AM, Groten, Ryan wrote:


I was planning on making a Gluster Data domain to test, and found some 
great information on this page: 
http://community.redhat.com/blog/2014/05/ovirt-3-4-glusterized/


The article the author uses the CTDB service for VIP failover.  Is it 
possible/recommended to not do this, and just create a gluster volume 
on all the hosts in a cluster, then create the Gluster data domain as 
localhost:gluster_vol?




Theoretically, it should work - if you make sure that you have a replica 
3 gluster volume spread across 3 nodes, and these 3 nodes are your 
compute nodes as well - you should be fine without CTDB setup for 
failover and mounting as localhost.


But I've not tried this to recommend it. Maybe if others have tried it, 
they can chime in?


Btw, is there any reason you do not want to set up CTDB?


Thanks,

Ryan

ThTh


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[ovirt-users] Help understanding Gluster in oVirt

2015-01-27 Thread Groten, Ryan
I was planning on making a Gluster Data domain to test, and found some great 
information on this page: 
http://community.redhat.com/blog/2014/05/ovirt-3-4-glusterized/
The article the author uses the CTDB service for VIP failover.  Is it 
possible/recommended to not do this, and just create a gluster volume on all 
the hosts in a cluster, then create the Gluster data domain as 
localhost:gluster_vol?

Thanks,
Ryan
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