Re: Are there 'tuned profiles' for various ceph scenarios?

["Harry G. Coin" <hgcoin@xxxxxxxxx>]

[Resent to correct title]
Marc:

Here's a template that works here.  You'll need to do some steps to
create the 'secret' and make the block devs and so on:

<disk type="network" device="disk">
  <driver name="qemu" type="raw" cache="writeback"/>
  <auth username="libvirt">
    <secret type="ceph" uuid="3fc5de60-358e-e010-93c9-bacfc9636edf"/>
  </auth>
  <source protocol="rbd" name="yournamespace/yourblockdevname" index="1">
    <host name="yourmon1" port="6789"/>
    <host name="yourmon2" port="6789"/>
    <host name="yourmon3" port="6789"/>
    <host name="yourmon4" port="6789"/>
  </source>
  <target dev="vda" bus="virtio"/>
  <alias name="virtio-disk0"/>
  <address type="pci" domain="0x0000" bus="0x00" slot="0x07"
function="0x0"/>
</disk>

Glad I could contribute something.   Sure would appreciate leads for the
suggested sysctls/etc either apart or as tuned profiles.

Harry

On 7/1/20 2:44 PM, Marc Roos wrote:
>  
> Just curious, how does the libvirt xml part look like of a 'direct 
> virtio->rados link' and 'kernel-mounted rbd'
>
>
>
>
>
> -----Original Message-----
> To: ceph-users@xxxxxxx
> Subject: *****SPAM*****  Are there 'tuned profiles' for 
> various ceph scenarios?
>
> Hi
>
> Are there any 'official' or even 'works for us' pointers to 'tuned 
> profiles' for such common uses as
>
> 'ceph baremetal osd host'
>
> 'ceph osd + libvirt host'
>
> 'ceph mon/mgr'
>
> 'guest vm based on a kernel-mounted rbd'
>
> 'guest vm based on a direct virtio->rados link'
>
> I suppose there are a few other common configurations, but you get the 
> idea.
>
> If you haven't used or know of 'tuned'-- it's a nice way to collect a 
> great whole lot of sysctl and other low level configuration options in 
> one spot. https://tuned-project.org/
>
> Thanks
>
> Harry Coin
>
>
>
>
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