planning ovirt for production
<br></div><div>- Two Dell R710 with 128 gigs of ram.</div><div><span style= =3D"font-size: 12pt;">- A third dell server for ovirt-engine.</span></div><=
------=_Part_27854792_967363234.1405525563715 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Hi, We have a production environment with KVM+centos6 and we want to switch to ovirt. At this moment we have 12 VM on three independent server. This VMs uses the local disks of servers, we don't have a central storage. currently we have for ovirt - Two Dell R710 with 128 gigs of ram. - A third dell server for ovirt-engine. - four 1 gb/sec NICs/ server. - Smart GB switch we would like make an ovirt environment with - clusterized, redundant filesystem, data loss protection - If a host goes to down the VMs could made a restart on the remain host - LACP/bonding (mode 6) for fast I/O beetwen gluster hosts, we don't have 10Gbe nics - 8 TB of disk capacity for VMs we don't want: - using hw raid on servers, because we need free disk tray for more capacity My questions. - Which glusterfs method is the best for us for performance? - Can I make a real "performance" disk i/o by 4-4 NICs ? Or I need 10 Gbe nic for this? - How much disk need for good redundancy/performance? 4/server or 2/server ? - What will the weak point our project? Thanks in advance. Tibor ------=_Part_27854792_967363234.1405525563715 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <html><body><div style=3D"font-family: times new roman, new york, times, se= rif; font-size: 12pt; color: #000000"><div>Hi,</div><div><br></div><div>We = have a production environment with KVM+centos6 and we want to switch to ovi= rt.</div><div>At this moment we have 12 VM on three independent server.&nbs= p;</div><div>This VMs uses the local disks of servers, we don't have a cent= ral storage.</div><div><br></div><div>currently we have for ovirt</div><div= div><span style=3D"font-size: 12pt;">- four 1 gb/sec NICs/ server.</span></= div><div><span style=3D"font-size: 12pt;">- Smart GB switch</span></div><di= v><br></div><div>we would like make an ovirt environment with</div><div><br=
</div><div>- clusterized, redundant filesystem, data loss protection</div>= <div>- If a host goes to down the VMs could made a restart on the remain ho= st</div><div>- LACP/bonding (mode 6) for fast I/O beetwen gluster hosts, we= don't have 10Gbe nics</div><div>- 8 TB of disk capacity for VMs</div><div>= <br></div><div>we don't want:</div><div><br></div><div>- using hw raid on s= ervers, because we need free disk tray for more capacity</div><div><br></di= v><div>My questions.</div><div><br></div><div>- Which glusterfs method is t= he best for us for performance?</div><div>- Can I make a real "performance"= disk i/o by 4-4 NICs ? Or I need 10 Gbe nic for this?</div><di= v>- How much disk need for good redundancy/performance? 4/server or 2/serve= r ? </div><div>- What will the weak point our project?</div><div><br><= /div><div>Thanks in advance.</div><div><br></div><div>Tibor</div><div><br><= /div><div><br></div><div><br></div><div><br></div><div><br></div></div></bo= dy></html> ------=_Part_27854792_967363234.1405525563715--
On 07/16/2014 06:46 PM, Demeter Tibor wrote:
Hi,
We have a production environment with KVM+centos6 and we want to switch to ovirt. At this moment we have 12 VM on three independent server. This VMs uses the local disks of servers, we don't have a central storage.
currently we have for ovirt
- Two Dell R710 with 128 gigs of ram. - A third dell server for ovirt-engine. - four 1 gb/sec NICs/ server. - Smart GB switch
we would like make an ovirt environment with
- clusterized, redundant filesystem, data loss protection - If a host goes to down the VMs could made a restart on the remain host - LACP/bonding (mode 6) for fast I/O beetwen gluster hosts, we don't have 10Gbe nics - 8 TB of disk capacity for VMs
we don't want:
- using hw raid on servers, because we need free disk tray for more capacity
My questions.
- Which glusterfs method is the best for us for performance?
vijay?
- Can I make a real "performance" disk i/o by 4-4 NICs ? Or I need 10 Gbe nic for this? - How much disk need for good redundancy/performance? 4/server or 2/server ? - What will the weak point our project?
make sure to use gluster with replica 3, which needs 3 servers? maybe use hosted engine to remove need for dedicated server for it?
Thanks in advance.
Tibor
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On 07/22/2014 06:15 PM, Itamar Heim wrote:
On 07/16/2014 06:46 PM, Demeter Tibor wrote:
Hi,
We have a production environment with KVM+centos6 and we want to switch to ovirt. At this moment we have 12 VM on three independent server. This VMs uses the local disks of servers, we don't have a central storage.
currently we have for ovirt
- Two Dell R710 with 128 gigs of ram. - A third dell server for ovirt-engine. - four 1 gb/sec NICs/ server. - Smart GB switch
we would like make an ovirt environment with
- clusterized, redundant filesystem, data loss protection - If a host goes to down the VMs could made a restart on the remain host - LACP/bonding (mode 6) for fast I/O beetwen gluster hosts, we don't have 10Gbe nics - 8 TB of disk capacity for VMs
we don't want:
- using hw raid on servers, because we need free disk tray for more capacity
My questions.
- Which glusterfs method is the best for us for performance?
vijay?
A replicated gluster volume does help for availability and performance. Please ensure that you optimize the gluster volume for virtualization by applying the performance settings in virt profile [1].
- Can I make a real "performance" disk i/o by 4-4 NICs ? Or I need 10 Gbe nic for this? - How much disk need for good redundancy/performance? 4/server or 2/server ? - What will the weak point our project?
make sure to use gluster with replica 3, which needs 3 servers? maybe use hosted engine to remove need for dedicated server for it?
Using replica 3 volumes would provide better protection for split-brains. Thanks, Vijay [1] https://github.com/gluster/glusterfs/blob/master/extras/group-virt.example
Hi, Thank you for you reply. Is it better than a replica beetwen two node? My plan is one server for ovirt (based on hw raid10) and two server for replication. Is better with 3 servers? Also, is 1GBe NIC will be enought for performance? I would use bonding. Thanks Demeter Tibor ----- Eredeti üzenet -----
On 07/22/2014 06:15 PM, Itamar Heim wrote:
On 07/16/2014 06:46 PM, Demeter Tibor wrote:
Hi,
We have a production environment with KVM+centos6 and we want to switch to ovirt. At this moment we have 12 VM on three independent server. This VMs uses the local disks of servers, we don't have a central storage.
currently we have for ovirt
- Two Dell R710 with 128 gigs of ram. - A third dell server for ovirt-engine. - four 1 gb/sec NICs/ server. - Smart GB switch
we would like make an ovirt environment with
- clusterized, redundant filesystem, data loss protection - If a host goes to down the VMs could made a restart on the remain host - LACP/bonding (mode 6) for fast I/O beetwen gluster hosts, we don't have 10Gbe nics - 8 TB of disk capacity for VMs
we don't want:
- using hw raid on servers, because we need free disk tray for more capacity
My questions.
- Which glusterfs method is the best for us for performance?
vijay?
A replicated gluster volume does help for availability and performance. Please ensure that you optimize the gluster volume for virtualization by applying the performance settings in virt profile [1].
- Can I make a real "performance" disk i/o by 4-4 NICs ? Or I need 10 Gbe nic for this? - How much disk need for good redundancy/performance? 4/server or 2/server ? - What will the weak point our project?
make sure to use gluster with replica 3, which needs 3 servers? maybe use hosted engine to remove need for dedicated server for it?
Using replica 3 volumes would provide better protection for split-brains.
Thanks, Vijay
[1] https://github.com/gluster/glusterfs/blob/master/extras/group-virt.example
participants (3)
-
Demeter Tibor -
Itamar Heim -
Vijay Bellur