You can do so from CLI:
ceph osd crush reweight osd.N
https://ceph.com/geen-categorie/difference-between-ceph-osd-reweight-and-ceph-osd-crush-reweight/
El 31/08/18 a las 13:01, Gilberto Nunes escribió:
Thanks a lot for all this advice guys.
I still learn with Ceph.
So I have a doubt regarding how to change the weight from certain hdd
Is there some command to do that?
Em sex, 31 de ago de 2018 05:58, Ronny Aasen <[email protected]>
escreveu:
when adding a older machine to your cluster, keep in mind that the
slowest node with determine the overall speed of the ceph cluster (since
a vm's disk will be spread all over)
for RBD vm's you want low latency, so use things like
nvram > ssd > hdd with osd latency significant difference here.
100Gb/25Gb > 40Gb/10Gb (1Gb is useless in this case imho)
as long as you have enough cores, higher ghz is better then lower ghz.
due to lower latency
kind regards.
Ronny Aasen
On 31. aug. 2018 00:21, Gilberto Nunes wrote:
An HPE Server will remain after deploy 3 servers with proxmox and ceph.
I thing I will use this HPE server as 4th node!
---
Gilberto Nunes Ferreira
(47) 3025-5907
(47) 99676-7530 - Whatsapp / Telegram
Skype: gilberto.nunes36
2018-08-30 18:16 GMT-03:00 Ronny Aasen <[email protected]>:
if HA is important, you should consider having a 4th ceph osd server
(does
not have to also be proxmox)
with ceph's default of 3 replicas, that you will want to use in a
production setup, you do not have any failure domain.
IOW the loss of any one node = a degraded ceph cluster. if you have an
additional node, ceph will rebalance and return to HEALTH_OK on the
failure
of a node.
with vm's iops are important so you must keep latency to a minimum.
both of these are explained a bit more in detail in the link he posted.
kind regards
Ronny Aasen
On 30.08.2018 20:46, Gilberto Nunes wrote:
Hi Martin.
Not really worried about highest performance, but to know if it will
work
properly, mainly HA!
I plan work with mesh network too.
Tanks a lot
---
Gilberto Nunes Ferreira
(47) 3025-5907
(47) 99676-7530 - Whatsapp / Telegram
Skype: gilberto.nunes36
2018-08-30 15:40 GMT-03:00 Martin Maurer <[email protected]>:
Hello,
Not really. Please read in detail the following:
https://forum.proxmox.com/threads/proxmox-ve-ceph-benchmark-
2018-02.41761/
On 30.08.2018 16:47, Gilberto Nunes wrote:
Hi there
It's possible create a scenario with 3 PowerEdge r540, with Proxmox
and
Ceph.
The server has this configuration:
32 GB memory
SAS 2x 300 GB
SSD 1x 480 GB
2 VM with SQL and Windows server.
Thanks
---
Gilberto Nunes Ferreira
(47) 3025-5907
(47) 99676-7530 - Whatsapp / Telegram
Skype: gilberto.nunes36
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