Re: Very beginner question for cephadm: config file for bootstrap and osd_crush_chooseleaf_type

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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@xxxxxxxxx>:

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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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