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List:       ceph-users
Subject:    [ceph-users] Re: Very beginner question for cephadm: config file for bootstrap and osd_crush_choosel
From:       Ignacio_García <igarcia () livemed-spain ! com>
Date:       2021-08-31 11:08:53
Message-ID: 4d1238fe-33c6-3ad7-25e3-59e51afd830e () livemed-spain ! com
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Just for experimenting, which are those single host defaults? Maybe these?:

mon_allow_pool_size_one = 1
osd_pool_default_size = 1

Ignacio


El 30/8/21 a las 17:31, Sebastian Wagner escribió:
> Try running `cephadm bootstrap --single-host-defaults`
>
> Am 20.08.21 um 18:23 schrieb Eugen Block:
>> Hi,
>>
>> you can just set the config option with 'ceph config set ...' after 
>> your cluster has been bootstrapped. See [1] for more details about 
>> the config store.
>>
>> [1] 
>> https://docs.ceph.com/en/latest/rados/configuration/ceph-conf/#monitor-configuration-database
>>
>>
>> Zitat von Dong Xie <xied75@gmail.com>:
>>
>>> <!-- /* Font Definitions */ @font-face {font-family:"Cambria Math";
>>> panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:DengXian;
>>> panose-1:2 1 6 0 3 1 1 1 1 1;} @font-face {font-family:Calibri;
>>> panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:"\@DengXian";
>>> panose-1:2 1 6 0 3 1 1 1 1 1;} /* Style Definitions */ p.MsoNormal,
>>> li.MsoNormal, div.MsoNormal  {margin:0cm;  font-size:11.0pt;
>>> font-family:"Calibri",sans-serif;} a:link, span.MsoHyperlink
>>> {mso-style-priority:99;  color:blue; text-decoration:underline;}
>>> .MsoChpDefault  {mso-style-type:export-only;} @page WordSection1
>>> {size:612.0pt 792.0pt;  margin:72.0pt 72.0pt 72.0pt 72.0pt;}
>>> div.WordSection1  {page:WordSection1;} -->
>>> Dear All,
>>>
>>>
>>>
>>> Early days of my venture with Ceph. I understand that one should 
>>> have at
>>> least two hosts to truly appreciate the design of Ceph. But as a 
>>> baby step
>>> having one playground on a single host is really unavoidable.
>>>
>>>
>>>
>>> My env:
>>>
>>> A single Azure VM
>>>
>>> Ubuntu 20.04
>>>
>>> Installed cephadm via apt per official doc.
>>>
>>> ceph version 15.2.13 (c44bc49e7a57a87d84dfff2a077a2058aa2172e2) octopus
>>> (stable)
>>>
>>>
>>>
>>> Issues encountered:
>>>
>>> Following steps here: https://docs.ceph.com/en/latest/cephadm/install/
>>>
>>> I’ve created a initial-ceph.conf to set /osd crush chooseleaf type = 
>>> 0/.
>>>
>>>
>>>
>>> 1, with cmd like:
>>>
>>> sudo cephadm bootstrap --config initial-ceph.conf --mon-ip 10.2.0.4
>>>
>>> It seems my config line is simply ignored in the final conf.
>>>
>>> I’ve tried “/osd crush chooseleaf type = 0”/ (no underline symbol but
>>> rather space, I doubt if the document is correct).
>>>
>>> I’ve also tried “osd_crush_chooseleaf_type = 0” (underline rather
>>> than space).
>>>
>>> I’ve tried putting a tab to start the line, or without tab.
>>>
>>>
>>>
>>> My line is always ignored, unless I use --no-minimize-config switch.
>>>
>>>
>>>
>>> 2, with above switch and seeing my value set to 0 in conf file, when I
>>> login to the dashboard, looking at Cluster -> Configuration, search 
>>> this
>>> item, it shows Default value to 1, Current value empty, means it 
>>> doesn’t
>>> really got set?
>>>
>>>
>>>
>>> I’ve tried to search an answer for a while, but didn’t get any hint or
>>> workaround, any help would be greatly appreciated,
>>>
>>>
>>>
>>> Best regards,
>>>
>>>
>>>
>>> Dong Xie
>>>
>>> CodeRobin Ltd.
>>>
>>>
>>
>>
>>
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