Re: [Openstack-operators] Migration Openstack Instances and cloud-init

[Achi Hamza]

Thank you for sharing your findings :).

On 5 July 2016 at 13:00, Michael Stang 
wrote:

> Hi Hamza,
>
> thank you for your answere. I learnd much about the cloud-init in this
> process.
>
> I found now a way to config this without maipulating the cloud.cfg on the
> intance directly. I start the new instance from the copied snapshot with
> user-data I can inject over the "configurations" tab of a new openstack
> instance. I use the following config for this:
>
>
> #cloud-config
> password: 
> chpasswd: { expire: False }
> ssh_pwauth: True
> preserve_hostname: True
>
>
> I think I can do some more options which may be useful, but this works
> fine for me by now :-)
>
> Kind regards,
> Michael
>
>
> Achi Hamza  hat am 5. Juli 2016 um 12:36 geschrieben:
>
>
> Hi Michael,
>
> Yes, you can comment out the modules that you don't need.
>
> I don't think it is a good idea to completely disable cloud-init
> functionality. If you do so, the instances wouldn't be able to
> automatically set hostnames, disk resize, SSH keys injection and more other
> benefits.
>
> If you would like to use password for authentication you need to change
> the property *lock_passwd: True* to *lock_passwd: False *under the
> section *system_info* in the /etc/cloud/cloud.cfg config file.
>
> I do not actually know what process invokes cloud-init.
>
> I hope the above helps.
>
> Regards,
> Hamza
>
> On 4 July 2016 at 08:31, Michael Stang 
> wrote:
>
> Hi Hamza,
>
> thank you for your answere. So I have to comment out the modules i don't
> want to run when I understand this right?
>
> Why are the changes made to the instance when I start a snapshot of the
> instance and not every time when I start the instance itself? What event
> triggers the cloud-init to make this changes?
>
> What would happen when I remove the cloud-init package, will the instance
> still be working and what disadventages would I have then?
>
> Thank you and kind regards,
> Michael
>
>
>
> Achi Hamza  hat am 2. Juli 2016 um 14:30 geschrieben:
>
>
> Hi Michael,
>
> You can change this behavior in the /*etc*/*cloud*/*cloud*.cfg config
> file.
>
> Regards,
> Hamza
>
> On 1 July 2016 at 07:02, Michael Stang 
> wrote:
>
> Hi all,
>
> I tried to copy instances (based on the ubuntu cloud image) from our
> production cloud to our test cloud according to this description
>
>
> http://docs.openstack.org/user-guide/cli_use_snapshots_to_migrate_instances.html
>
> but when I start the instance on the test cloud the root password ist
> resetet and it seems that the cloud-init is invoked and change the instance
> like it is the first start. Is there a way to prevent this behaviour so the
> instance stays unchanged when I start it on the test cloud?
>
> Thanks and kind regards,
> Michael
>
> ___
> OpenStack-operators mailing list
> OpenStack-operators@lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>
>
>
> Viele Grüße
>
> Michael Stang
> Laboringenieur, Dipl. Inf. (FH)
>
> Duale Hochschule Baden-Württemberg Mannheim
> Baden-Wuerttemberg Cooperative State University Mannheim
> ZeMath Zentrum für mathematisch-naturwissenschaftliches Basiswissen
> Fachbereich Informatik, Fakultät Technik
> Coblitzallee 1-9
> 68163 Mannheim
>
> Tel.: +49 (0)621 4105 - 1367
> michael.st...@dhbw-mannheim.de
> http://www.dhbw-mannheim.de
>
>
>
>
>
>
>
>
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Re: [Openstack-operators] Migration Openstack Instances and cloud-init

[Michael Stang]

Hi Hamza,
 
thank you for your answere. I learnd much about the cloud-init in this process.
 
I found now a way to config this without maipulating the cloud.cfg on the
intance directly. I start the new instance from the copied snapshot with
user-data I can inject over the "configurations" tab of a new openstack
instance. I use the following config for this:
 

#cloud-config
password: 
chpasswd: { expire: False }
ssh_pwauth: True
preserve_hostname: True



I think I can do some more options which may be useful, but this works fine for
me by now :-)
 
Kind regards,
Michael
 

> Achi Hamza  hat am 5. Juli 2016 um 12:36 geschrieben:
> 
>  Hi Michael,
>   
>  Yes, you can comment out the modules that you don't need.
>   
>  I don't think it is a good idea to completely disable cloud-init
> functionality. If you do so, the instances wouldn't be able to automatically
> set hostnames, disk resize, SSH keys injection and more other benefits.
>   
>  If you would like to use password for authentication you need to change the
> property lock_passwd: True to lock_passwd: False under the section system_info
> in the /etc/cloud/cloud.cfg config file.
>   
>  I do not actually know what process invokes cloud-init.
>   
>  I hope the above helps.
>   
>  Regards,
>  Hamza
> 
>  On 4 July 2016 at 08:31, Michael Stang  mailto:michael.st...@dhbw-mannheim.de > wrote:
>> >Hi Hamza,
> > 
> >thank you for your answere. So I have to comment out the modules i don't
> > want to run when I understand this right?
> > 
> >Why are the changes made to the instance when I start a snapshot of the
> > instance and not every time when I start the instance itself? What event
> > triggers the cloud-init to make this changes?
> > 
> >What would happen when I remove the cloud-init package, will the instance
> > still be working and what disadventages would I have then?
> > 
> >Thank you and kind regards,
> >Michael
> > 
> > 
> > 
> > > > > Achi Hamza  hat am 2.
> > > > > Juli 2016 um 14:30 geschrieben:
> > > 
> > > 
> > > Hi Michael,
> > >  
> > > You can change this behavior in the /etc/cloud/cloud.cfg config file.
> > >  
> > > Regards,
> > > Hamza
> > > 
> > > On 1 July 2016 at 07:02, Michael Stang  > > mailto:michael.st...@dhbw-mannheim.de > wrote:
> > >   > > > >   Hi all,
> > > >
> > > >   I tried to copy instances (based on the ubuntu cloud image) from
> > > > our production cloud to our test cloud according to this description
> > > >
> > > > 
> > > >  
> > > > http://docs.openstack.org/user-guide/cli_use_snapshots_to_migrate_instances.html
> > > >
> > > >   but when I start the instance on the test cloud the root password
> > > > ist resetet and it seems that the cloud-init is invoked and change the
> > > > instance like it is the first start. Is there a way to prevent this
> > > > behaviour so the instance stays unchanged when I start it on the test
> > > > cloud?
> > > >
> > > >   Thanks and kind regards,
> > > >   Michael
> > > > 
> > > >   ___
> > > >   OpenStack-operators mailing list
> > > >   OpenStack-operators@lists.openstack.org
> > > > mailto:OpenStack-operators@lists.openstack.org
> > > > 
> > > >  
> > > > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
> > > > > > > 
> > >> > 
> > 
> >Viele Grüße
> > 
> >Michael Stang
> >Laboringenieur, Dipl. Inf. (FH)
> > 
> >Duale Hochschule Baden-Württemberg Mannheim
> >Baden-Wuerttemberg Cooperative State University Mannheim
> >ZeMath Zentrum für mathematisch-naturwissenschaftliches Basiswissen
> >Fachbereich Informatik, Fakultät Technik
> >Coblitzallee 1-9
> >68163 Mannheim
> > 
> >Tel.: +49 (0)621 4105 - 1367
> >michael.st...@dhbw-mannheim.de mailto:michael.st...@dhbw-mannheim.de
> >http://www.dhbw-mannheim.de
> > 
> > 
> > 
> > 
> > 
> >  > 

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Re: [Openstack-operators] Migration Openstack Instances and cloud-init

[Michael Stang]

Hi Hamza,
 
thank you for your answere. So I have to comment out the modules i don't want to
run when I understand this right?
 
Why are the changes made to the instance when I start a snapshot of the instance
and not every time when I start the instance itself? What event triggers the
cloud-init to make this changes?
 
What would happen when I remove the cloud-init package, will the instance still
be working and what disadventages would I have then?
 
Thank you and kind regards,
Michael
 
 

> Achi Hamza  hat am 2. Juli 2016 um 14:30 geschrieben:
> 
>  Hi Michael,
>   
>  You can change this behavior in the /etc/cloud/cloud.cfg config file.
>   
>  Regards,
>  Hamza
> 
>  On 1 July 2016 at 07:02, Michael Stang  mailto:michael.st...@dhbw-mannheim.de > wrote:
>> >Hi all,
> > 
> >I tried to copy instances (based on the ubuntu cloud image) from our
> > production cloud to our test cloud according to this description
> > 
> > 
> >   
> > http://docs.openstack.org/user-guide/cli_use_snapshots_to_migrate_instances.html
> > 
> >but when I start the instance on the test cloud the root password ist
> > resetet and it seems that the cloud-init is invoked and change the instance
> > like it is the first start. Is there a way to prevent this behaviour so the
> > instance stays unchanged when I start it on the test cloud?
> > 
> >Thanks and kind regards,
> >Michael
> > 
> >___
> >OpenStack-operators mailing list
> >OpenStack-operators@lists.openstack.org
> > mailto:OpenStack-operators@lists.openstack.org
> >http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
> >  > 

 
Viele Grüße

Michael Stang
Laboringenieur, Dipl. Inf. (FH)

Duale Hochschule Baden-Württemberg Mannheim
Baden-Wuerttemberg Cooperative State University Mannheim
ZeMath Zentrum für mathematisch-naturwissenschaftliches Basiswissen
Fachbereich Informatik, Fakultät Technik
Coblitzallee 1-9
68163 Mannheim

Tel.: +49 (0)621 4105 - 1367
michael.st...@dhbw-mannheim.de
http://www.dhbw-mannheim.de___
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[Openstack-operators] Migration Openstack Instances and cloud-init

[Michael Stang]

Hi all,
 
I tried to copy instances (based on the ubuntu cloud image) from our production
cloud to our test cloud according to this description
 
http://docs.openstack.org/user-guide/cli_use_snapshots_to_migrate_instances.html
 
but when I start the instance on the test cloud the root password ist resetet
and it seems that the cloud-init is invoked and change the instance like it is
the first start. Is there a way to prevent this behaviour so the instance stays
unchanged when I start it on the test cloud?
 
Thanks and kind regards,
Michael___
OpenStack-operators mailing list
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