Re: Ceph and Compute on same hardware?

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> A while back on a blog I saw mentioned that Ceph should not be run on compute nodes and in the general
> sense should be on dedicated hardware. Does this really still apply?

In my opinion storage needs to be rock-solid.
Running other (complex) software on a Ceph node increases the chances of stuff falling over.
Worst-case a cascading effect takes down you whole storage platform.
If your storage platform bites the dust your whole compute cloud also falls over (assuming you boot instances from Ceph).

Troubleshooting issues (especially those that have no obvious cause)  becomes more complex having to rule out more potential causes.

Not saying it can not work perfectly fine.
I'd rather just not take any chances with the storage system...

Cheers,
Robert van Leeuwen
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