[ceph-users] Re: Centos 7 Kernel clients on ceph Quincy -- experiences??

[Ackermann, Christoph]

Dear Sebastian,

thanks, it might be best to do so... That's what I also thought to be one
of the better solutions. :-)

I'll give feedback after a successful transition to Quincy.

Christoph

Am Di., 20. Sept. 2022 um 14:08 Uhr schrieb Sebastian Knust <
skn...@physik.uni-bielefeld.de>:

> Hi Christoph,
>
> I am able to reproducibly kernel panic CentOS 7 clients with native
> kernel (3.10.0-1160.76.1.el7) when accessing CephFS snapshots via SMB
> with vfs_shadow_copy2. This occurs on a Pacific cluster.  IIRC accessing
> the snapshots on the server also lead to a kernel panic, but I'm not sure.
>
> Running a mainline kernel from elrepo prevents this issue.
>
> I imagine that you might possibly run into these issues with a Quincy
> cluster as well, if you are using CephFS snapshots at all.
>
> Cheers
> Sebastian
>
> On 20.09.22 13:34, Ackermann, Christoph wrote:
> > Hello all,
> >
> > i would like to upgrade our well running Rocky 8.6 based bare metal
> cluster
> > from Octopus to Quincy next few days. But there are some Centos7 Kernel
> > based clients mapping RBDs or mounting CephFS in our environment.
> >
> > Is there someone here who can confirm Centos 7 clients
> > (3.10.0-1160.76.1.el7.x86_64) working with Quincy?
> >
> > Best regards,
> >
> > Christoph
> >
>
>
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[ceph-users] Re: Centos 7 Kernel clients on ceph Quincy -- experiences??

[Sebastian Knust]

Hi Christoph,

I am able to reproducibly kernel panic CentOS 7 clients with native 
kernel (3.10.0-1160.76.1.el7) when accessing CephFS snapshots via SMB 
with vfs_shadow_copy2. This occurs on a Pacific cluster.  IIRC accessing 
the snapshots on the server also lead to a kernel panic, but I'm not sure.


Running a mainline kernel from elrepo prevents this issue.

I imagine that you might possibly run into these issues with a Quincy 
cluster as well, if you are using CephFS snapshots at all.


Cheers
Sebastian

On 20.09.22 13:34, Ackermann, Christoph wrote:

Hello all,

i would like to upgrade our well running Rocky 8.6 based bare metal cluster
from Octopus to Quincy next few days. But there are some Centos7 Kernel
based clients mapping RBDs or mounting CephFS in our environment.

Is there someone here who can confirm Centos 7 clients
(3.10.0-1160.76.1.el7.x86_64) working with Quincy?

Best regards,

Christoph



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[ceph-users] Re: CentOS 7 and CentOS 8 Stream dependencies for diskprediction module

[Michal Strnad]

Did anyone have the same problem? We come across this on every cluster.

Thank you
--
Michal Strnad


On 10/11/21 4:23 PM, Michal Strnad wrote:

Hi,

Did anyone get the diskprediction-local plugin working on CentOS 7.9 or 
CentOS 8 Stream? We have the same problem under both version of CentOS.


When we enable the plugin with 15.2.14 ceph version we get following error.

Module 'diskprediction_local' has failed: No module named
sklearn.svm.classes

If the package ceph-mgr-diskprediction-local is installed it brings in 
several dependencies but apparently these are not enough.


We tried using pip/pip3 to get another library but diskprediction_local
still doesn't work. Are we missing something?

Thank you

Cheers,
Michal


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[ceph-users] Re: CentOS Linux 8 EOL

[Konstantin Shalygin]

Currently, we on CentOS8 Stream use usual Ceph repo: 



[root@k8s-prod-worker0 /]# dnf info ceph-osd
Last metadata expiration check: 0:00:06 ago on Fri 17 Sep 2021 08:44:30 PM +07.
Available Packages
Name : ceph-osd
Epoch: 2
Version  : 16.2.5
Release  : 0.el8
Architecture : x86_64
Size : 18 M
Source   : ceph-16.2.5-0.el8.src.rpm
Repository   : ceph
Summary  : Ceph Object Storage Daemon
URL  : http://ceph.com/
License  : LGPL-2.1 and LGPL-3.0 and CC-BY-SA-3.0 and GPL-2.0 and BSL-1.0 
and BSD-3-Clause and MIT
Description  : ceph-osd is the object storage daemon for the Ceph distributed 
file
 : system.  It is responsible for storing objects on a local file 
system
 : and providing access to them over the network.

[root@k8s-prod-worker0 /]# uname -a
Linux k8s-prod-worker0 5.13.12-1.el8.elrepo.x86_64 #1 SMP Tue Aug 17 10:51:25 
EDT 2021 x86_64 x86_64 x86_64 GNU/Linux
[root@k8s-prod-worker0 /]# cat /etc/os-release
NAME="CentOS Stream"
VERSION="8"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="8"
PLATFORM_ID="platform:el8"
PRETTY_NAME="CentOS Stream 8"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:8"
HOME_URL="https://centos.org/;
BUG_REPORT_URL="https://bugzilla.redhat.com/;
REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux 8"
REDHAT_SUPPORT_PRODUCT_VERSION="CentOS Stream"
[root@k8s-prod-worker0 /]#


Also Ceph almost ready for EL9, AFAIK



k


> On 7 Sep 2021, at 16:29, Dan van der Ster  wrote:
> 
> We wanted to clarify the plans / expectations for when CentOS Linux 8
> reaches EOL at the end of this year.
> The default plan for our prod clusters is to upgrade servers in place
> from Linux 8.4 to Stream 8. (We already started this a couple months
> ago, ran into a couple minor fixable issues, and will resume these
> upgrades soon).
> 
> Currently the el8 octopus/pacific builds on download.ceph.com 
>  are
> built on CentOS Linux 8 (AFAICT) -- which OS will those be built on
> when Linux 8 is no more?

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[ceph-users] Re: Centos 8 2021 with ceph, how to move forward?

[Martin Verges]

Hello,

we from croit use Ceph on Debian and deploy all our clusters with it.
It works like a charm and I personally have quite good experience with
it since ~20 years. It is a fantastic solid OS for Servers.

--
Martin Verges
Managing director

Mobile: +49 174 9335695
E-Mail: martin.ver...@croit.io
Chat: https://t.me/MartinVerges

croit GmbH, Freseniusstr. 31h, 81247 Munich
CEO: Martin Verges - VAT-ID: DE310638492
Com. register: Amtsgericht Munich HRB 231263

Web: https://croit.io
YouTube: https://goo.gl/PGE1Bx

Am Do., 14. Jan. 2021 um 11:12 Uhr schrieb David Majchrzak, ODERLAND
Webbhotell AB :
>
> One of our providers (cloudlinux)  released a 1:1 binary compatible
> redhat fork due to the changes with Centos 8.
>
> Could be worth looking at.
>
> https://almalinux.org/
>
> In our case we're using ceph on debian 10.
>
> --
>
> David Majchrzak
> CTO
> Oderland Webbhotell AB
> Östra Hamngatan 50B, 411 09 Göteborg, SWEDEN
>
> Den 2021-01-14 kl. 09:04, skrev Szabo, Istvan (Agoda):
> > Hi,
> >
> > Just curious how you guys move forward with this Centos 8 change.
> >
> > We just finished installing our full multisite cluster and looks like we 
> > need to change the operating system.
> >
> > So curious if you are using centos 8 with ceph, where you are going to move 
> > forward.
> >
> > Thank you
> >
> > 
> > This message is confidential and is for the sole use of the intended 
> > recipient(s). It may also be privileged or otherwise protected by copyright 
> > or other legal rules. If you have received it by mistake please let us know 
> > by reply email and delete it from your system. It is prohibited to copy 
> > this message or disclose its content to anyone. Any confidentiality or 
> > privilege is not waived or lost by any mistaken delivery or unauthorized 
> > disclosure of the message. All messages sent to and from Agoda may be 
> > monitored to ensure compliance with company policies, to protect the 
> > company's interests and to remove potential malware. Electronic messages 
> > may be intercepted, amended, lost or deleted, or contain viruses.
> > ___
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[ceph-users] Re: Centos 8 2021 with ceph, how to move forward?

[David Majchrzak, ODERLAND Webbhotell AB]

One of our providers (cloudlinux)  released a 1:1 binary compatible 
redhat fork due to the changes with Centos 8.


Could be worth looking at.

https://almalinux.org/

In our case we're using ceph on debian 10.

--

David Majchrzak
CTO
Oderland Webbhotell AB
Östra Hamngatan 50B, 411 09 Göteborg, SWEDEN

Den 2021-01-14 kl. 09:04, skrev Szabo, Istvan (Agoda):

Hi,

Just curious how you guys move forward with this Centos 8 change.

We just finished installing our full multisite cluster and looks like we need 
to change the operating system.

So curious if you are using centos 8 with ceph, where you are going to move 
forward.

Thank you


This message is confidential and is for the sole use of the intended 
recipient(s). It may also be privileged or otherwise protected by copyright or 
other legal rules. If you have received it by mistake please let us know by 
reply email and delete it from your system. It is prohibited to copy this 
message or disclose its content to anyone. Any confidentiality or privilege is 
not waived or lost by any mistaken delivery or unauthorized disclosure of the 
message. All messages sent to and from Agoda may be monitored to ensure 
compliance with company policies, to protect the company's interests and to 
remove potential malware. Electronic messages may be intercepted, amended, lost 
or deleted, or contain viruses.
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[ceph-users] Re: CentOS

[Mark Nelson]

Hi Folks,


We have CentOS Stream 8 installed on some of our community performance 
test gear.  A couple of months ago there was a change introduced to the 
repository names that broke install-deps.sh, but that has now been 
fixed.  Otherwise, Ceph master builds fine on these nodes and I don't 
see why packages would have any issue.  I believe Octopus and Nautilus 
would also need that change to install-deps.sh to build properly, but 
otherwise I don't believe there are any major issues preventing them 
from working.



Mark


On 12/8/20 3:01 PM, Marc Roos wrote:
  
I did not. Thanks for the info. But if I understand this[1] explanation

correctly. CentOS stream is some sort of trial environment for rhel. So
who is ever going to put SDS on such an OS?

Last post on this blog "But if you read the FAQ, you also learn that
once they start work on RHEL 9, CentOS Stream 8 ceases to exist..."

[1]
https://www.youtube.com/watch?v=IEEdOogPMY8






-Original Message-
To: ceph-users@ceph.io
Subject: [ceph-users] CentOS

All;

As you may or may not know; this morning RedHat announced the end of
CentOS as a rebuild distribution[1].  "CentOS" will be retired in favor
of the recently announced "CentOS Stream."

Can Ceph be installed on CentOS Stream?

Since CentOS Stream is currently at 8, the question really is: Can Ceph
Octopus be installed on CentOS Stream 8?  How about Nautilus?

Thank you,

Dominic L. Hilsbos, MBA
Director - Information Technology
Perform Air International Inc.
dhils...@performair.com
www.PerformAir.com

[1: https://blog.centos.org/2020/12/future-is-centos-stream/]
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[ceph-users] Re: CentOS

[DHilsbos]

Marc;

As if that's not enough confusion (from the FAQ):
"Security issues will be updated in CentOS Stream after they are solved in the 
current RHEL release. Obviously, embargoed security releases can not be 
publicly released until after the embargo is lifted."

Thank you,

Dominic L. Hilsbos, MBA 
Director - Information Technology 
Perform Air International Inc.
dhils...@performair.com 
www.PerformAir.com


-Original Message-
From: Marc Roos [mailto:m.r...@f1-outsourcing.eu] 
Sent: Tuesday, December 8, 2020 3:19 PM
To: Dominic Hilsbos; mozes
Cc: aKrishna; ceph-users
Subject: [ceph-users] Re: CentOS


I am confused about that page
 
"Does this mean that CentOS Stream is the RHEL BETA test platform now?"
"No, CentOS Stream will be getting fixes and features ahead of RHEL"

However this is how wikipedia describes beta:
Beta version software is often useful for demonstrations and previews 
within an organization and to prospective customers. 

"we expect CentOS Stream to have fewer bugs ... than RHEL until those 
packages make it into the RHEL release" 
That looks also contradictory to me. 



-Original Message-
Subject: *****SPAM* Re: [ceph-users] Re: CentOS

Marc,

That video may be out of date.

https://centos.org/distro-faq/#q6-will-there-be-separateparallelsimultaneous-streams-for-8-9-10-etc

--
Adam

On Tue, Dec 8, 2020 at 3:50 PM  wrote:
>
> Marc;
>
> I'm not happy about this, but RedHat is suggesting that those of us 
running CentOS for production should move to CentOS Stream.  As such, I 
need to determine if the software I'm running on top of it can be run on 
Stream.
>
> Thank you,
>
> Dominic L. Hilsbos, MBA
> Director - Information Technology
> Perform Air International Inc.
> dhils...@performair.com
> www.PerformAir.com
>
> -Original Message-
> From: Marc Roos [mailto:m.r...@f1-outsourcing.eu]
> Sent: Tuesday, December 8, 2020 2:02 PM
> To: ceph-users; Dominic Hilsbos
> Cc: aKrishna
> Subject: [ceph-users] Re: CentOS
>
>
> I did not. Thanks for the info. But if I understand this[1] 
> explanation correctly. CentOS stream is some sort of trial environment 

> for rhel. So who is ever going to put SDS on such an OS?
>
> Last post on this blog "But if you read the FAQ, you also learn that 
> once they start work on RHEL 9, CentOS Stream 8 ceases to exist..."
>
> [1]
> https://www.youtube.com/watch?v=IEEdOogPMY8
>
>
>
>
>
>
> -Original Message-
> To: ceph-users@ceph.io
> Subject: [ceph-users] CentOS
>
> All;
>
> As you may or may not know; this morning RedHat announced the end of 
> CentOS as a rebuild distribution[1].  "CentOS" will be retired in 
> favor of the recently announced "CentOS Stream."
>
> Can Ceph be installed on CentOS Stream?
>
> Since CentOS Stream is currently at 8, the question really is: Can 
> Ceph Octopus be installed on CentOS Stream 8?  How about Nautilus?
>
> Thank you,
>
> Dominic L. Hilsbos, MBA
> Director - Information Technology
> Perform Air International Inc.
> dhils...@performair.com
> www.PerformAir.com
>
> [1: https://blog.centos.org/2020/12/future-is-centos-stream/]
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[ceph-users] Re: CentOS

[Marc Roos]

I am confused about that page
 
"Does this mean that CentOS Stream is the RHEL BETA test platform now?"
"No, CentOS Stream will be getting fixes and features ahead of RHEL"

However this is how wikipedia describes beta:
Beta version software is often useful for demonstrations and previews 
within an organization and to prospective customers. 

"we expect CentOS Stream to have fewer bugs ... than RHEL until those 
packages make it into the RHEL release" 
That looks also contradictory to me. 



-Original Message-
Subject: *****SPAM***** Re: [ceph-users] Re: CentOS

Marc,

That video may be out of date.

https://centos.org/distro-faq/#q6-will-there-be-separateparallelsimultaneous-streams-for-8-9-10-etc

--
Adam

On Tue, Dec 8, 2020 at 3:50 PM  wrote:
>
> Marc;
>
> I'm not happy about this, but RedHat is suggesting that those of us 
running CentOS for production should move to CentOS Stream.  As such, I 
need to determine if the software I'm running on top of it can be run on 
Stream.
>
> Thank you,
>
> Dominic L. Hilsbos, MBA
> Director - Information Technology
> Perform Air International Inc.
> dhils...@performair.com
> www.PerformAir.com
>
> -Original Message-
> From: Marc Roos [mailto:m.r...@f1-outsourcing.eu]
> Sent: Tuesday, December 8, 2020 2:02 PM
> To: ceph-users; Dominic Hilsbos
> Cc: aKrishna
> Subject: [ceph-users] Re: CentOS
>
>
> I did not. Thanks for the info. But if I understand this[1] 
> explanation correctly. CentOS stream is some sort of trial environment 

> for rhel. So who is ever going to put SDS on such an OS?
>
> Last post on this blog "But if you read the FAQ, you also learn that 
> once they start work on RHEL 9, CentOS Stream 8 ceases to exist..."
>
> [1]
> https://www.youtube.com/watch?v=IEEdOogPMY8
>
>
>
>
>
>
> -Original Message-
> To: ceph-users@ceph.io
> Subject: [ceph-users] CentOS
>
> All;
>
> As you may or may not know; this morning RedHat announced the end of 
> CentOS as a rebuild distribution[1].  "CentOS" will be retired in 
> favor of the recently announced "CentOS Stream."
>
> Can Ceph be installed on CentOS Stream?
>
> Since CentOS Stream is currently at 8, the question really is: Can 
> Ceph Octopus be installed on CentOS Stream 8?  How about Nautilus?
>
> Thank you,
>
> Dominic L. Hilsbos, MBA
> Director - Information Technology
> Perform Air International Inc.
> dhils...@performair.com
> www.PerformAir.com
>
> [1: https://blog.centos.org/2020/12/future-is-centos-stream/]
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> ___
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[ceph-users] Re: CentOS

[Adam Tygart]

Marc,

That video may be out of date.

https://centos.org/distro-faq/#q6-will-there-be-separateparallelsimultaneous-streams-for-8-9-10-etc

--
Adam

On Tue, Dec 8, 2020 at 3:50 PM  wrote:
>
> Marc;
>
> I'm not happy about this, but RedHat is suggesting that those of us running 
> CentOS for production should move to CentOS Stream.  As such, I need to 
> determine if the software I'm running on top of it can be run on Stream.
>
> Thank you,
>
> Dominic L. Hilsbos, MBA
> Director - Information Technology
> Perform Air International Inc.
> dhils...@performair.com
> www.PerformAir.com
>
> -Original Message-
> From: Marc Roos [mailto:m.r...@f1-outsourcing.eu]
> Sent: Tuesday, December 8, 2020 2:02 PM
> To: ceph-users; Dominic Hilsbos
> Cc: aKrishna
> Subject: [ceph-users] Re: CentOS
>
>
> I did not. Thanks for the info. But if I understand this[1] explanation
> correctly. CentOS stream is some sort of trial environment for rhel. So
> who is ever going to put SDS on such an OS?
>
> Last post on this blog "But if you read the FAQ, you also learn that
> once they start work on RHEL 9, CentOS Stream 8 ceases to exist..."
>
> [1]
> https://www.youtube.com/watch?v=IEEdOogPMY8
>
>
>
>
>
>
> -Original Message-
> To: ceph-users@ceph.io
> Subject: [ceph-users] CentOS
>
> All;
>
> As you may or may not know; this morning RedHat announced the end of
> CentOS as a rebuild distribution[1].  "CentOS" will be retired in favor
> of the recently announced "CentOS Stream."
>
> Can Ceph be installed on CentOS Stream?
>
> Since CentOS Stream is currently at 8, the question really is: Can Ceph
> Octopus be installed on CentOS Stream 8?  How about Nautilus?
>
> Thank you,
>
> Dominic L. Hilsbos, MBA
> Director - Information Technology
> Perform Air International Inc.
> dhils...@performair.com
> www.PerformAir.com
>
> [1: https://blog.centos.org/2020/12/future-is-centos-stream/]
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>
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[ceph-users] Re: CentOS

[DHilsbos]

Marc;

I'm not happy about this, but RedHat is suggesting that those of us running 
CentOS for production should move to CentOS Stream.  As such, I need to 
determine if the software I'm running on top of it can be run on Stream.

Thank you,

Dominic L. Hilsbos, MBA 
Director - Information Technology 
Perform Air International Inc.
dhils...@performair.com 
www.PerformAir.com

-Original Message-
From: Marc Roos [mailto:m.r...@f1-outsourcing.eu] 
Sent: Tuesday, December 8, 2020 2:02 PM
To: ceph-users; Dominic Hilsbos
Cc: aKrishna
Subject: [ceph-users] Re: CentOS

 
I did not. Thanks for the info. But if I understand this[1] explanation 
correctly. CentOS stream is some sort of trial environment for rhel. So 
who is ever going to put SDS on such an OS?

Last post on this blog "But if you read the FAQ, you also learn that 
once they start work on RHEL 9, CentOS Stream 8 ceases to exist..."

[1]
https://www.youtube.com/watch?v=IEEdOogPMY8






-Original Message-
To: ceph-users@ceph.io
Subject: [ceph-users] CentOS

All;

As you may or may not know; this morning RedHat announced the end of 
CentOS as a rebuild distribution[1].  "CentOS" will be retired in favor 
of the recently announced "CentOS Stream."

Can Ceph be installed on CentOS Stream?

Since CentOS Stream is currently at 8, the question really is: Can Ceph 
Octopus be installed on CentOS Stream 8?  How about Nautilus?

Thank you,

Dominic L. Hilsbos, MBA
Director - Information Technology
Perform Air International Inc.
dhils...@performair.com
www.PerformAir.com

[1: https://blog.centos.org/2020/12/future-is-centos-stream/]
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[ceph-users] Re: CentOS

[Marc Roos]

 
I did not. Thanks for the info. But if I understand this[1] explanation 
correctly. CentOS stream is some sort of trial environment for rhel. So 
who is ever going to put SDS on such an OS?

Last post on this blog "But if you read the FAQ, you also learn that 
once they start work on RHEL 9, CentOS Stream 8 ceases to exist..."

[1]
https://www.youtube.com/watch?v=IEEdOogPMY8






-Original Message-
To: ceph-users@ceph.io
Subject: [ceph-users] CentOS

All;

As you may or may not know; this morning RedHat announced the end of 
CentOS as a rebuild distribution[1].  "CentOS" will be retired in favor 
of the recently announced "CentOS Stream."

Can Ceph be installed on CentOS Stream?

Since CentOS Stream is currently at 8, the question really is: Can Ceph 
Octopus be installed on CentOS Stream 8?  How about Nautilus?

Thank you,

Dominic L. Hilsbos, MBA
Director - Information Technology
Perform Air International Inc.
dhils...@performair.com
www.PerformAir.com

[1: https://blog.centos.org/2020/12/future-is-centos-stream/]
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[ceph-users] Re: CentOS 8, Ceph Octopus, ssh private key

[Mika Saari]

Hi,
  Didn't earlier check the journalctl -xe, but only /var/log/ceph logs.
Found out that ceph script is informing that python3 is missing. And indeed
it is missing from the machines. After installation of python3 to other
servers, everything started to work.
  Thanks for all!

On Wed, Nov 18, 2020 at 11:44 PM Mika Saari  wrote:

> Hi,
>
>   Thanks for help. Tested creating new ssh config file, and added it to
> ceph. Unfortunately this didn't make any change to the current behaviour of
> the "ceph orch host add ceph2" command. (Tested restarting sshd, and
> finally the machines as well, just in case)
>
>   Thanks a lot!
>
> On Wed, Nov 18, 2020 at 10:05 PM Tony Liu  wrote:
>
>> See if this helps.
>> * Create "ssh-config".
>> ```
>> Host *
>> StrictHostKeyChecking no
>> UserKnownHostsFile /dev/null
>> LogLevel ERROR
>> ```
>>
>> * Add it to cephadm.
>> ```
>> ceph cephadm set-ssh-config -i ssh-config
>> ```
>>
>> Then try to add host again.
>>
>>
>> Tony
>> > -Original Message-
>> > From: Mika Saari 
>> > Sent: Wednesday, November 18, 2020 11:28 AM
>> > To: ceph-users@ceph.io
>> > Subject: [ceph-users] CentOS 8, Ceph Octopus, ssh private key
>> >
>> > Hi,
>> >
>> >   Installing Ceph Octopus using cephadm. I managed to install ceph-
>> > common with cephadm and when trying to add new hosts with "ceph orch
>> > host add ceph2" I get error
>> >
>> > "Error EINVAL: Failed to connect to ceph2 (ceph2). Check that the host
>> > is reachable and accepts connection using the cephadm SSH key".
>> >
>> >   I verified that I am able to ssh login to the ceph2 server with ceph
>> > private_key like it was described in the error message. But since adding
>> > new hosts to the ceph wasn't working, I tried generating the new private
>> > key and updating the public keys to the remote servers with:
>> >   # ceph cephadm clear-key
>> >   # ceph cephadm generate-key
>> >   # ceph cephadm get-pub-key > ceph.pub
>> >   # ceph config-key get mgr/cephadm/ssh_identity_key > ceph.priv
>> >   # ssh-copy-id -f -i /etc/ceph/ceph.pub root@ceph1
>> >   # ssh-copy-id -f -i /etc/ceph/ceph.pub root@ceph2
>> >   # ssh-copy-id -f -i /etc/ceph/ceph.pub root@ceph3
>> >   And then testing that the private key really is working:
>> >   # chmod 600 ceph.priv
>> >   # ssh -i ceph.priv root@ceph2
>> >   At this point ssh works with passwordless login. But still the ceph
>> > orch host add ceph2 doesn't work (giving exactly the same error)
>> >
>> >   I also tried restarting the manager with "ceph mgr fail" which was
>> > informed somewhere -> no effect. Also tried rebooting the machines -> no
>> > effect.
>> >
>> >   Any tips I could still try ?
>> >
>> >   Thank you very much!
>> > ___
>> > ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an
>> > email to ceph-users-le...@ceph.io
>>
>
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[ceph-users] Re: CentOS 8, Ceph Octopus, ssh private key

[Mika Saari]

Hi,

  Thanks for help. Tested creating new ssh config file, and added it to
ceph. Unfortunately this didn't make any change to the current behaviour of
the "ceph orch host add ceph2" command. (Tested restarting sshd, and
finally the machines as well, just in case)

  Thanks a lot!

On Wed, Nov 18, 2020 at 10:05 PM Tony Liu  wrote:

> See if this helps.
> * Create "ssh-config".
> ```
> Host *
> StrictHostKeyChecking no
> UserKnownHostsFile /dev/null
> LogLevel ERROR
> ```
>
> * Add it to cephadm.
> ```
> ceph cephadm set-ssh-config -i ssh-config
> ```
>
> Then try to add host again.
>
>
> Tony
> > -Original Message-
> > From: Mika Saari 
> > Sent: Wednesday, November 18, 2020 11:28 AM
> > To: ceph-users@ceph.io
> > Subject: [ceph-users] CentOS 8, Ceph Octopus, ssh private key
> >
> > Hi,
> >
> >   Installing Ceph Octopus using cephadm. I managed to install ceph-
> > common with cephadm and when trying to add new hosts with "ceph orch
> > host add ceph2" I get error
> >
> > "Error EINVAL: Failed to connect to ceph2 (ceph2). Check that the host
> > is reachable and accepts connection using the cephadm SSH key".
> >
> >   I verified that I am able to ssh login to the ceph2 server with ceph
> > private_key like it was described in the error message. But since adding
> > new hosts to the ceph wasn't working, I tried generating the new private
> > key and updating the public keys to the remote servers with:
> >   # ceph cephadm clear-key
> >   # ceph cephadm generate-key
> >   # ceph cephadm get-pub-key > ceph.pub
> >   # ceph config-key get mgr/cephadm/ssh_identity_key > ceph.priv
> >   # ssh-copy-id -f -i /etc/ceph/ceph.pub root@ceph1
> >   # ssh-copy-id -f -i /etc/ceph/ceph.pub root@ceph2
> >   # ssh-copy-id -f -i /etc/ceph/ceph.pub root@ceph3
> >   And then testing that the private key really is working:
> >   # chmod 600 ceph.priv
> >   # ssh -i ceph.priv root@ceph2
> >   At this point ssh works with passwordless login. But still the ceph
> > orch host add ceph2 doesn't work (giving exactly the same error)
> >
> >   I also tried restarting the manager with "ceph mgr fail" which was
> > informed somewhere -> no effect. Also tried rebooting the machines -> no
> > effect.
> >
> >   Any tips I could still try ?
> >
> >   Thank you very much!
> > ___
> > ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an
> > email to ceph-users-le...@ceph.io
>
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[ceph-users] Re: CentOS 8, Ceph Octopus, ssh private key

[Tony Liu]

See if this helps.
* Create "ssh-config".
```
Host *
StrictHostKeyChecking no
UserKnownHostsFile /dev/null
LogLevel ERROR
```

* Add it to cephadm.
```
ceph cephadm set-ssh-config -i ssh-config
```

Then try to add host again.


Tony
> -Original Message-
> From: Mika Saari 
> Sent: Wednesday, November 18, 2020 11:28 AM
> To: ceph-users@ceph.io
> Subject: [ceph-users] CentOS 8, Ceph Octopus, ssh private key
> 
> Hi,
> 
>   Installing Ceph Octopus using cephadm. I managed to install ceph-
> common with cephadm and when trying to add new hosts with "ceph orch
> host add ceph2" I get error
> 
> "Error EINVAL: Failed to connect to ceph2 (ceph2). Check that the host
> is reachable and accepts connection using the cephadm SSH key".
> 
>   I verified that I am able to ssh login to the ceph2 server with ceph
> private_key like it was described in the error message. But since adding
> new hosts to the ceph wasn't working, I tried generating the new private
> key and updating the public keys to the remote servers with:
>   # ceph cephadm clear-key
>   # ceph cephadm generate-key
>   # ceph cephadm get-pub-key > ceph.pub
>   # ceph config-key get mgr/cephadm/ssh_identity_key > ceph.priv
>   # ssh-copy-id -f -i /etc/ceph/ceph.pub root@ceph1
>   # ssh-copy-id -f -i /etc/ceph/ceph.pub root@ceph2
>   # ssh-copy-id -f -i /etc/ceph/ceph.pub root@ceph3
>   And then testing that the private key really is working:
>   # chmod 600 ceph.priv
>   # ssh -i ceph.priv root@ceph2
>   At this point ssh works with passwordless login. But still the ceph
> orch host add ceph2 doesn't work (giving exactly the same error)
> 
>   I also tried restarting the manager with "ceph mgr fail" which was
> informed somewhere -> no effect. Also tried rebooting the machines -> no
> effect.
> 
>   Any tips I could still try ?
> 
>   Thank you very much!
> ___
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