Hi everyone. Still me with my newbie question....sorry. I'm using cephadm to deploy my ceph cluster, but when I search in the documentation «docs.ceph.com» I see in some place like https://docs.ceph.com/en/latest/rados/configuration/pool-pg-config-ref/ to change something in the /etc/ceph/ceph.conf. How that is taking account by cephadm ? I see in the docker container they have a overlay for /etc/ceph/ceph.conf. Should I modify the ceph.conf (vi/emacs) directly ? Should I modify the ceph.conf (vi/emacs) directly and restart something ? Should I use some cephadm shell and don't manually touche ceph.conf ? And what about the future ? Regards. -- Albert SHIH 🦫 🐸 France Heure locale/Local time: jeu. 23 nov. 2023 15:21:47 CET
to change something in the /etc/ceph/ceph.conf.
Central config was introduced with Mimic. Since both central config and ceph.conf work and are supported, explicitly mentioning both in the docs every time is a lot of work (and awkward). One day we’ll sort out an effective means to generalize throughout the docs.
How that is taking account by cephadm ? I see in the docker container they have a overlay for /etc/ceph/ceph.conf.
Should I modify the ceph.conf (vi/emacs) directly ?
vi is never the answer.
Should I modify the ceph.conf (vi/emacs) directly and restart something ? Should I use some cephadm shell and don't manually touche ceph.conf ?
Depending on the option in question, you may be able to just use “ceph config” to set it centrally. When asking questions here, it helps a LOT if you share the Ceph release you’re running and more context.
And what about the future ?
We are all interested in the future, for that is where you and I are going to spend the rest of our lives.
Regards. -- Albert SHIH 🦫 🐸 France Heure locale/Local time: jeu. 23 nov. 2023 15:21:47 CET _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io
Le 23/11/2023 à 09:32:49-0500, Anthony D'Atri a écrit
Hi, Thanks for your answer.
to change something in the /etc/ceph/ceph.conf.
Central config was introduced with Mimic. Since both central config and ceph.conf work and are supported, explicitly mentioning both in the docs every time is a lot of work (and awkward). One day we’ll sort out an effective means to generalize throughout the docs.
Ok. I perfectly understand the «nightmare» to maintained a up2date documentation.
How that is taking account by cephadm ? I see in the docker container they have a overlay for /etc/ceph/ceph.conf.
Should I modify the ceph.conf (vi/emacs) directly ?
vi is never the answer.
WTF ? You break my dream ;-) ;-) Ok.
Should I modify the ceph.conf (vi/emacs) directly and restart something ? Should I use some cephadm shell and don't manually touche ceph.conf ?
Depending on the option in question, you may be able to just use “ceph config” to set it centrally. When asking questions here, it helps a LOT if you share the Ceph release you’re running and more context.
You're right. Currently I'm testing 17.2.7 quincy. So in my daily life how I would know if I should use ceph config or modify with vi/emacs/whatever /etc/ceph/ceph.conf ?
And what about the future ?
We are all interested in the future, for that is where you and I are going to spend the rest of our lives.
Correct ;-) Sorry my question was not very clear. My question was in fact in which way we headed. But I'm guessing the answer is “ceph config” or something like that. Thanks. Regards -- Albert SHIH 🦫 🐸 Observatoire de Paris France Heure locale/Local time: jeu. 23 nov. 2023 15:37:04 CET
Should I modify the ceph.conf (vi/emacs) directly ?
vi is never the answer.
WTF ? You break my dream ;-) ;-)
Let line editors die.
You're right.
Currently I'm testing
17.2.7 quincy.
So in my daily life how I would know if I should use ceph config or modify with vi/emacs/whatever /etc/ceph/ceph.conf ?
Use central “ceph config” unless you have an explicit reason to use ceph.conf. Before we had central config, maintaining ceph.conf properly across clusters could be rather a pain. There is a precedence to option values, which can be specified on the commandline, central config, ceph.conf, or via injection. I don’t recall the order. If you stick with the central config you mostly don’t need to worry unless you change your monitor nodes.
And what about the future ?
We are all interested in the future, for that is where you and I are going to spend the rest of our lives.
Correct ;-)
https://www.youtube.com/watch?v=qsb74pW7goU Plan 9 from Outer Space (1957) Tor Johnson, Vampira, Tom Keene, Bela Lugosi | Full Movie, subtitles youtube.com
Sorry my question was not very clear. My question was in fact in which way we headed. But I'm guessing the answer is “ceph config” or something like that.
Thanks.
Regards
-- Albert SHIH 🦫 🐸 Observatoire de Paris France Heure locale/Local time: jeu. 23 nov. 2023 15:37:04 CET
Hi Albert, You should never edit any file in the containers, cephadm takes care of it. Most of the parameters described in the doc you mentioned are better managed with "ceph config" command in the Ceph configuration database. If you want to run the ceph commnand on a Ceph machine outside a container, you can add the label _admin to your host in "ceph orch host" so that cephadm takes care of maintaining your /etc/ceph.conf (outside the container). Cheers, Michel Le 23/11/2023 à 15:28, Albert Shih a écrit :
Hi everyone.
Still me with my newbie question....sorry.
I'm using cephadm to deploy my ceph cluster, but when I search in the documentation «docs.ceph.com» I see in some place like
https://docs.ceph.com/en/latest/rados/configuration/pool-pg-config-ref/
to change something in the /etc/ceph/ceph.conf.
How that is taking account by cephadm ? I see in the docker container they have a overlay for /etc/ceph/ceph.conf.
Should I modify the ceph.conf (vi/emacs) directly ? Should I modify the ceph.conf (vi/emacs) directly and restart something ? Should I use some cephadm shell and don't manually touche ceph.conf ?
And what about the future ?
Regards.
Le 23/11/2023 à 15:35:25+0100, Michel Jouvin a écrit Hi,
You should never edit any file in the containers, cephadm takes care of it. Most of the parameters described in the doc you mentioned are better managed with "ceph config" command in the Ceph configuration database. If you want to run the ceph commnand on a Ceph machine outside a container, you can add
Ok. Of course I'll not touch anything inside any container, I juste check the overlay to see if the container use this file. It's just I see in lot of place in the documentation some configuration to put in the /etc/ceph/ceph.conf
the label _admin to your host in "ceph orch host" so that cephadm takes care of maintaining your /etc/ceph.conf (outside the container).
Ok. I'm indeed using ceph orch & Cie. Thanks. Regards. JAS -- Albert SHIH 🦫 🐸 Observatoire de Paris France Heure locale/Local time: jeu. 23 nov. 2023 15:48:36 CET
Hi, Please note that there are cases where the use of ceph.conf inside a container is justified. For example, I was unable to set monitor's mon_rocksdb_options by any means except for providing them in monitor's own ceph.conf within the container, all other attempts to pass this settings were ignored by the monitor. /Z On Thu, 23 Nov 2023 at 16:53, Albert Shih <Albert.Shih@obspm.fr> wrote:
Le 23/11/2023 à 15:35:25+0100, Michel Jouvin a écrit Hi,
You should never edit any file in the containers, cephadm takes care of
it.
Most of the parameters described in the doc you mentioned are better managed with "ceph config" command in the Ceph configuration database. If you want to run the ceph commnand on a Ceph machine outside a container, you can add
Ok. Of course I'll not touch anything inside any container, I juste check the overlay to see if the container use this file.
It's just I see in lot of place in the documentation some configuration to put in the /etc/ceph/ceph.conf
the label _admin to your host in "ceph orch host" so that cephadm takes care of maintaining your /etc/ceph.conf (outside the container).
Ok. I'm indeed using ceph orch & Cie.
Thanks.
Regards.
JAS -- Albert SHIH 🦫 🐸 Observatoire de Paris France Heure locale/Local time: jeu. 23 nov. 2023 15:48:36 CET _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io
participants (4)
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Albert Shih
-
Anthony D'Atri
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Michel Jouvin
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Zakhar Kirpichenko