Hallo Joachim, Thank your for the information about the ceph days - too late for me to schedule this - this year 🙂 Best regards, Beste Grüße, Alex Concat AG IT Solutions | Berliner Ring 127 - 129 | 64625 Bensheim | www.concat.de alexander.leutz@concat.de | Tel.: +49 6251 7026-143 | Mobil: +49 151 18856009 | Fax: +49 6251 7026-356 Hauptsitz Bensheim a. d. Bergstraße | Vorstand Olaf von Heyer Aufsichtsratsvorsitzender Tim Patronik | Amtsgericht Darmstadt (HRB 25326) ________________________________ Von: Joachim Kraftmayer <joachim.kraftmayer@clyso.com> Gesendet: Donnerstag, 23. Oktober 2025 07:08 An: Anthony D'Atri <anthony.datri@gmail.com> Cc: Kirby Haze <kirbyhaze01@gmail.com>; Alexander Leutz <alexander.leutz@concat.de>; ceph-users <ceph-users@ceph.io> Betreff: Re: [ceph-users] Re: newbie CRUSH rules / rbd pool ACHTUNG: Diese E-Mail stammt von außerhalb der Concat AG. Alle Aufforderungen, auf Links oder Anhänge zu klicken, sollten sorgfältig geprüft werden. Bei verdächtigen Nachrichten ist die Echtheit mit dem Absender über eine bekannte Telefonnummer zu bestätigen. Or join ceph days: Next in Germany in November Protected link to ceph.io<https://nsp.concat.de/link?id=BAgAAAD9JtMDTfNEoZUAAAB8TuCTXc95MxQEteq_r2HwfeBti_9JcnbPx2sjrsLpegbGlYxcFW3XANvIUn8UxSYE8WHMnq3_O32ElcKgEqEleJOE1zCQA_CjlB29ogiowxxtiO1WhTAcQLLQtWOFgPN8_7E_oI_Ek2lU6McFyC1XOLVF2x1SmoFFAzQx02_0HWl5ZMiwTb620u2ot_yIjd4gYZx4_Q2> Joachim Protected link to clyso.com<https://nsp.concat.de/link?id=BAgAAAD9JtMDTfNEoXAAAADkqMg_udWDd9Pajk4lcRNlTl-Nl4h20er5EFiELiCRig6reRhGQFfFXhluS6E7ppHOwM_a2fJM8LSTGi2y-9ksabEI53hZt7p0_7osrQwO33mVZ66-su2EP3eNX1xzt67ts_zwEc9yvtIoSc758yPZ0> Hohenzollernstr. 27, 80801 Munich Utting a. A. | HR: Augsburg | HRB: 25866 | USt. ID-Nr.: DE2754306 Anthony D'Atri <anthony.datri@gmail.com<mailto:anthony.datri@gmail.com>> schrieb am Do., 23. Okt. 2025, 03:34: I'm partial to this one https://www.amazon.com/s?k=learning+ceph+second+edition&crid=1NILUH0R7APSL <https://www.amazon.com/s?k=learning+ceph+second+edition&crid=1NILUH0R7APSL&> The basics, like what are the components, what are OSDs and PGs, rough ideas of sizing, etc. are still quite valid, but a lot has changed since it came out. Like widespread adoption of the PG autoscaler and cephadm, automatic stepping of pgp_num. I *think* it covers the balancer but it's evolved since then for sure. There's a new user workshop @ Cephalocon next week. If you aren't yet attending, that would be a really good way to dive in, and you'd find scores of us who love talking Ceph all day and all night. -- aad
On Oct 22, 2025, at 8:59 PM, Kirby Haze <kirbyhaze01@gmail.com<mailto:kirbyhaze01@gmail.com>> wrote:
There are some published books out there written by community members that can be useful. Some talks on youtube as well that can be useful for understanding core concepts.
What kind of things are you confused about and maybe we can help here directly. Usually the out of the box CRUSH rule is default to host so there is that.
On Wed, Oct 22, 2025 at 6:20 AM Alexander Leutz <alexander.leutz@concat.de<mailto:alexander.leutz@concat.de> <mailto:alexander.leutz@concat.de<mailto:alexander.leutz@concat.de>>> wrote:
Hi everybody,
I'm new to ceph. I'm testing 4 proxmox ceph nodes.
I researched a lot on CRUSH rules and I build a rbd pool for use with my test-vms.
I'm reading a lot in the official docs under docs.ceph.com (Protected link to ceph.com)<https://nsp.concat.de/link?id=BAgAAAD9JtMDTfNEoXAAAABHcTOrfp6yoH5pTMcV5sGQGlBZ8a_6LJ_halUJSt_AHJSH2smzyAoLpS_mW-LALZLSiXFszl0ZzG9FEmEvx6LnWcXGJVuKw_Qe1WcuOL7LsZzCgU06aH3P-masQ3D8aHeoew9f3spBz7Lb3u073DbK0> <Protected link to ceph.com<https://nsp.concat.de/link?id=BAgAAAD9JtMDTfNEoXAAAACN4ehqsNr-mP4xV1wP9L7Kzj4A2Mh0zwOa3ltVwh4wrlluNVNEOGL3vLLXbtTCpnQM0Rm5nXONzV0xl5rh9v9qzF-DQLMRktpdvO1NPp5VeZAPa0gdvVvqjHg4SbOi57uzyDiGjo9WwY6U0qly7IWv0>>. But I still have a lot of white space on my personal knowledge map.
Are there any other recommendations for getting a full / deeper understanding of ceph? books?
Best regards, Alexander <noname.png>
<noname.png> <https://www.linkedin.com/company/concat-ag/> <noname.png> <https://www.facebook.com/ConcatAG> <noname.png> <https://www.xing.com/companies/concatag> Concat AG IT Solutions | Berliner Ring 127 - 129 | 64625 Bensheim | <http://www.concat.de/>www.concat.de<http://www.concat.de> <http://www.concat.de/> alexander.leutz@concat.de<mailto:alexander.leutz@concat.de> <mailto:alexander.leutz@concat.de<mailto:alexander.leutz@concat.de>> | Tel.: +49 6251 7026-143 | Mobil: +49 151 18856009 | Fax: +49 6251 7026-356
Hauptsitz Bensheim a. d. Bergstraße | Vorstand Olaf von Heyer Aufsichtsratsvorsitzender Tim Patronik | Amtsgericht Darmstadt (HRB 25326)
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