Xen users - Feb 2007 - Xen administration tools (for multiple Xen servers)?

Once one has more Xen servers, it becomes a little difficult to manage 
all them.

I''m looking for a tool capable of:

- displaying all guests started on separate Xen hosts
- migrating guests from one host to another
- starting/stopping guests on specified Xen hosts - this should prevent 
starting/running two same guests on two Xen hosts at the same time


-- 
Tomasz Chmielewski
http://wpkg.org

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Hello Tomasz,

I use openQRM to manage my servers.

Look here: www.openqrm.org

greetz
Dietmar Simons


Tomasz Chmielewski schrieb:
> Once one has more Xen servers, it becomes a little difficult to manage 
> all them.
>
> I''m looking for a tool capable of:
>
> - displaying all guests started on separate Xen hosts
> - migrating guests from one host to another
> - starting/stopping guests on specified Xen hosts - this should 
> prevent starting/running two same guests on two Xen hosts at the same 
> time
>
>

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Simons IT-Service schrieb:
> Hello Tomasz,
> 
> I use openQRM to manage my servers.
> 
> Look here: www.openqrm.org

This looks a bit like an overkill for me to do these tasks:
>> I''m looking for a tool capable of:
>>
>> - displaying all guests started on separate Xen hosts
>> - migrating guests from one host to another
>> - starting/stopping guests on specified Xen hosts - this should 
>> prevent starting/running two same guests on two Xen hosts at the same 
>> time

Anything more Xen-specific (like multiple-Xen-hosts enabled "xm" 
command, possibly with a basic web interface)?


-- 
Tomasz Chmielewski
http://wpkg.org


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16 Şub 2007 Cum tarihinde, Tomasz Chmielewski şunları yazmıştı:
> Anything more Xen-specific (like multiple-Xen-hosts enabled "xm"
> command, possibly with a basic web interface)?
Maybe you can use Xenman <only python and some modules needed) 
[http://xenman.sourceforge.net/] or virt-manager (libvirt etc. needed) 
[http://xenman.sourceforge.net/] ?

Cheers
-- 
S.Çağlar Onur <caglar@pardus.org.tr>
http://cekirdek.pardus.org.tr/~caglar/

Linux is like living in a teepee. No Windows, no Gates and an Apache in house!


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S.Çağlar Onur schrieb:
> 16 Şub 2007 Cum tarihinde, Tomasz Chmielewski şunları yazmıştı: 
>> Anything more Xen-specific (like multiple-Xen-hosts enabled
"xm"
>> command, possibly with a basic web interface)?
> 
> Maybe you can use Xenman <only python and some modules needed) 
> [http://xenman.sourceforge.net/] or virt-manager (libvirt etc. needed) 
> [http://xenman.sourceforge.net/] ?
As I checked, XenMan doesn''t support domain migration. It also needs a 
whole Xen installation, so it can''t be really installed for example on 
sysadmin''s laptop.


And virt-manager doesn''t even seem to support multiple Xen hosts.


-- 
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http://wpkg.org

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On Fri, Feb 16, 2007 at 05:18:48PM +0100, Tomasz Chmielewski
wrote:
> S.Ça??lar Onur schrieb:
> >16 ??ub 2007 Cum tarihinde, Tomasz Chmielewski ??unlar?? yazm????t??: 
> >>Anything more Xen-specific (like multiple-Xen-hosts enabled
"xm"
> >>command, possibly with a basic web interface)?
> >
> >Maybe you can use Xenman <only python and some modules needed) 
> >[http://xenman.sourceforge.net/] or virt-manager (libvirt etc. needed) 
> >[http://xenman.sourceforge.net/] ?
> 
> As I checked, XenMan doesn''t support domain migration. It also
needs a
> whole Xen installation, so it can''t be really installed for
example on
> sysadmin''s laptop.
> 
> And virt-manager doesn''t even seem to support multiple Xen hosts.
The ability to manage multiple hosts remotely is work in progress. Rather
than hacking something in using SSH tunnelling, we''re trying to get a
long term supportable remote management capability written in libvirt which 
will support Xen, QEMU, KVM to avoid lock-in to one virt platform. I expect
it''ll be 2-3 months before we do a release of virt-manager which
enables
this remote management capability.

Regards,
Dan.
-- 
|=- Red Hat, Engineering, Emerging Technologies, Boston.  +1 978 392 2496 -=|
|=-           Perl modules: http://search.cpan.org/~danberr/              -=|
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On Fri, 2007-02-16 at 16:33 +0000, Daniel P. Berrange wrote:
> The ability to manage multiple hosts remotely is work in progress. Rather
> than hacking something in using SSH tunnelling, we''re trying to
get a
> long term supportable remote management capability written in libvirt which
> will support Xen, QEMU, KVM to avoid lock-in to one virt platform. I expect
> it''ll be 2-3 months before we do a release of virt-manager which
enables
> this remote management capability.
I have something ''ssh like'' which supports remote calls and
sftp. Server
size is under 56k stripped statically linked with blowfish / md5 using
its own random challenge authentication. Client is also tiny, it was
developed for small memory model systems and revived / redone for Xen. 

Its not yet in a state that I want to release it, but I can (and will)
make it available to any who reply off list.

example use : 

srce -k /root/node2.key -s node2.mydomain.com EXEC "xm list" 
srce -k /root/node3.key -s node3.mydomain.com -o /var/templates GET
''file.img''
srce -k /root/node4.key -s node4.mydomain.com PUT "/var/domu.img"

Sample daemon config :

keyfile=/root/.srce-key
fileroot=/var/srced/journal
putroot=/var/srced/putroot 
execroot=/var/srced/exec
lockdir=/var/run
logfile=/var/srced/log/srced.log
ipfile=/etc/srced/srced.allow
loglevel=2
port=9500
noexec=no
encrypt=yes
interface=127.0.0.1,192.168.1.10

Simply explained, if a symbolic link to a binary or script (or just a
binary or script) exists in the execroot, it can be run remotely, unless
noexec is set to true in the config. You can also write scripts to offer
limited functionality of stuff like ls / etc, allowing only parts of it
to be used.

fileroot is the root where files can be retreived

putroot is the root where files can be put

On trusted networks, you can turn off encryption (blowfish), however
this is sparse to begin with, really no need for disabling it.

Its been in production about 2 years now over 300 + machines without
incident, it also lets you easily specify what IP''s are
''allowed'' to
connect and do business, though I much more recommend using tcp
wrappers. This is also not (yet) PAM-able, but will be, its a work in
progress but stable and proven enough for use. 

Pretty much everything you need out of SSH to manage large farms,
without the bloat.

The challenge response was written with promiscuous bridges in mind. A
keyfile looks like this :

piv6d7z9Uhbayf8k43gK6pAlMIQBRTLk
dI1yYQetH3MKeoHQejrsN4dQyjXqjMfZ
85cgtJFnyXi6GlPvOC71p8VDaTLOcIQs
ShxeIqftpqsRbUm469XkiZq8t6jdBOO9
dszOA4FZzOmrbkBRxSy1vMFOSKjuAfqe
SaquOwHSTe6ynKMzy9QwUwmXDVdatbUQ
9xTmZKaz8vkwKM4M2Pg4yaSPxjTZJYZJ
njW7ozwuf3sSvRy6u7GZ58KfMCUpyJnz
KONcPC7FBdpHTaqUAoweACQhtKiuX7Mt
U68yk3NKbNHfPjK6nDe18sgmQhMrI5SF
R79xI7SHEC1yKhbMckeyXkdOCXNnZIE5
DvWOdO4ZDheauJquKvsM3gGPIlzLQEMm
9g3b0FQrY5UwwDfnxzWXN4xu8y7GPnxR
yinWCXEDAqZULYDkNNzxREBpZvullK8T
kU4ad0fvkWDmcsarudxYgKMsFYHdHY19
SBNHNoq5PtOtO6OU80JPDVOaBxNHuBBy
MdRB12zA6vuQu9DpYveXDIBDjPY2AGBF
8qoqrgep8ChXzp5ryUMa1iZvgNvMCM6b
IyAxEEUag1Wy5Lapdx1g07QZ7wKjHNTx
kOV9dUcDGpnylqEG5lS3jq5tVQpCmAI1
BczC8H4qnFGpDQWbCUGyJdOM9nkpe36H
jM3qNlRs0bnPgZUvpyBEU88kk97kThNZ
MxNvEZHxWq6caA7DX7mfdvchJqi8SF7y
qSLKZG87m8XtOaMEsYJfB1cYGo3hPFGt
O55xPl0d9lkjjYBVgaGCFqOVMjsEjAGW
1BTmNWPZID4gJH0OehtFykCZiReVwO3L
eL7KhJpoGfdoxrk1sVAKfUGSJO7QBE3A
UHpeGqk3xRGldospnol3DHHmSHisfveY
BthqUJ5De30EqZCYge71fDzQOv6JmcDt

Client presents an AUTH request and the first line of they key, server
then asks for random lines from it (how many is up to you but you''ll
need to modify a little code to ask for more than one). Client then
presents the lines the server asked for, and authenticates. 

So, at no time is the entire key presented, nor will the same
''dance''
get you in twice. 

Requirements : gcc and tcp/ip , its low level C and platform
independent. I have yet to try it on *bsd, but I don''t think it will
have any issues. Its been tested on :

Debian 3.1 / Etch
Ubuntu Hoary, Dapper, Breezy, Edgy
FC3, 4, 5
CentOS 4.3 and 4.4

It should have no issues on (but was not tested on)

RHEL (*)
SuSE (*)
Gentoo (*)
*BSD

selinux was NOT enabled during testing, but wouldn''t present a problem.

I also have a very easy to use PHP class to go along with it which just
uses exec() to use the client and interprets the results and exit level.
The client just exits with whatever level the remote command gave.

Installs in about 30 seconds, if someone wants to tinker just shoot me
an e-mail. While this doesn''t do everything Dan was talking about, it
solves the short term problem.

SRCE assumes you have something on the other end to take arguments. For
instance, 

EXEC "setupvm domain.com"

where setupvm is a shell script that uses wget / lynx / curl / xmlrpc
(whatever) to fetch the data needed to create "domain.com" from
somewhere central and call on other scripts to do things like setup
volume groups and copy templates / make config files with the right
vaules in them, etc. 

This is not an out of the box solution, but a building block to make
things easier, if anyone is interested or needs it. It will be released
(officially) when Gridnix (gridnix.com) itself is released the middle of
this year.

Its currently managing :

Xen farms
OpenVZ / Virtuozzo Farms
Plain old Linux servers
Linux appliances (LB''s and FW''s)

Working on a set of scripts to integrate it with Vyatta, but that''s a
long ways away.

Be forewarned, this does have a laundry list of things yet to finish,
but should work if you just need to get an automated farm up in a hurry.

Best,
--Tim


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Tim Post schrieb:
> On Fri, 2007-02-16 at 16:33 +0000, Daniel P. Berrange wrote:
> 
>> The ability to manage multiple hosts remotely is work in progress.
Rather
>> than hacking something in using SSH tunnelling, we''re trying
to get a
>> long term supportable remote management capability written in libvirt
which
>> will support Xen, QEMU, KVM to avoid lock-in to one virt platform. I
expect
>> it''ll be 2-3 months before we do a release of virt-manager
which enables
>> this remote management capability.
> 
> I have something ''ssh like'' which supports remote calls
and sftp. Server
> size is under 56k stripped statically linked with blowfish / md5 using
> its own random challenge authentication. Client is also tiny, it was
> developed for small memory model systems and revived / redone for Xen. 
> 
> Its not yet in a state that I want to release it, but I can (and will)
> make it available to any who reply off list.
Hi,

Why not release it as a project on sourceforge.net or similar?

Experience shows that good ideas find contributors sooner or later - and 
as we see, there is a need for such tool for managing multiple Xen servers.

Of course, I''d be interested in such tool.


-- 
Tomasz Chmielewski
http://wpkg.org

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Daniel P. Berrange schrieb:
> On Fri, Feb 16, 2007 at 05:18:48PM +0100, Tomasz Chmielewski wrote:
>> S.Ça??lar Onur schrieb:
>>> 16 ??ub 2007 Cum tarihinde, Tomasz Chmielewski ??unlar??
yazm????t??:
>>>> Anything more Xen-specific (like multiple-Xen-hosts enabled
"xm"
>>>> command, possibly with a basic web interface)?
>>> Maybe you can use Xenman <only python and some modules needed) 
>>> [http://xenman.sourceforge.net/] or virt-manager (libvirt etc.
needed)
>>> [http://xenman.sourceforge.net/] ?
>> As I checked, XenMan doesn''t support domain migration. It also
needs a
>> whole Xen installation, so it can''t be really installed for
example on
>> sysadmin''s laptop.
>>
>> And virt-manager doesn''t even seem to support multiple Xen
hosts.
> 
> The ability to manage multiple hosts remotely is work in progress. Rather
> than hacking something in using SSH tunnelling, we''re trying to
get a
> long term supportable remote management capability written in libvirt which
> will support Xen, QEMU, KVM to avoid lock-in to one virt platform. I expect
> it''ll be 2-3 months before we do a release of virt-manager which
enables
> this remote management capability.
Very nice.
I''ll look carefully at virt-manager then.


-- 
Tomasz Chmielewski
http://wpkg.org


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Tomasz Chmielewski wrote:
> Daniel P. Berrange schrieb:
>> On Fri, Feb 16, 2007 at 05:18:48PM +0100, Tomasz Chmielewski wrote:
>>> S.Ça??lar Onur schrieb:
>>>> 16 ??ub 2007 Cum tarihinde, Tomasz Chmielewski ??unlar??
yazm????t??:
>>>>> Anything more Xen-specific (like multiple-Xen-hosts enabled
"xm"
>>>>> command, possibly with a basic web interface)?
>>>> Maybe you can use Xenman <only python and some modules
needed)
>>>> [http://xenman.sourceforge.net/] or virt-manager (libvirt etc.
>>>> needed) [http://xenman.sourceforge.net/] ?
>>> As I checked, XenMan doesn''t support domain migration. It
also needs
>>> a whole Xen installation, so it can''t be really installed
for
>>> example on sysadmin''s laptop.
>>>
>>> And virt-manager doesn''t even seem to support multiple Xen
hosts.
>>
>> The ability to manage multiple hosts remotely is work in progress.
>> Rather
>> than hacking something in using SSH tunnelling, we''re trying
to get a
>> long term supportable remote management capability written in libvirt
>> which will support Xen, QEMU, KVM to avoid lock-in to one virt
>> platform. I expect
>> it''ll be 2-3 months before we do a release of virt-manager
which enables
>> this remote management capability.
>
> Very nice.
> I''ll look carefully at virt-manager then.
>
>
Might be worth checking out MLN also..

http://mln.sourceforge.net/

Ingard

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Hello Tom,

We had the same need exactly as you. So I wrote a python script, part of the
vGrid project at CERN, runs on each of node which have Xen/Libvirt
installed.

It provides two views: Detailed view
(Xen<http://vgrid.web.cern.ch/vgrid/demo/xen.htm>),
Brief view (Load <http://vgrid.web.cern.ch/vgrid/demo/load.htm>)

I am attaching the two snapshots.

XenView <http://vgrid.web.cern.ch/vgrid/demo/xenview.htm> basically
publishes "xm list" command to a web page, and the top layer
aggregates the
whole cluster.

XenLoad <http://vgrid.web.cern.ch/vgrid/demo/loadview.htm> basically shows
the host name and the number of virtual machines its running. And there is
color code which changes as number of virtual machines increases/decreases.
This is very helpful to see at just one glance that what the status over the
whole test bed.

The top layer is in PHP, which reads the list of nodes in your cluster from
a configuration file. Thus its very configurable and adaptable.

Some one else later proposed to have such a tool on sourceforge, so I would
be happy to put it up there and lets the community, together, take care of
it. Because these are issues which concerns all of us.

I look forward to the feed back.

Best Regards
Omer

Links:
-------

[1] http://vgrid.web.cern.ch/vgrid/demo/xen.htm
[2] http://vgrid.web.cern.ch/vgrid/demo/load.htm
[3] http://vgrid.web.cern.ch/vgrid/demo/xenview.htm
[4] http://vgrid.web.cern.ch/vgrid/demo/load.htm




On 2/16/07, Tomasz Chmielewski <mangoo@wpkg.org>
wrote:
>
> Simons IT-Service schrieb:
> > Hello Tomasz,
> >
> > I use openQRM to manage my servers.
> >
> > Look here: www.openqrm.org
>
>
> This looks a bit like an overkill for me to do these tasks:
>
> >> I''m looking for a tool capable of:
> >>
> >> - displaying all guests started on separate Xen hosts
> >> - migrating guests from one host to another
> >> - starting/stopping guests on specified Xen hosts - this should
> >> prevent starting/running two same guests on two Xen hosts at the
same
> >> time
>
>
> Anything more Xen-specific (like multiple-Xen-hosts enabled "xm"
> command, possibly with a basic web interface)?
>
>
> --
> Tomasz Chmielewski
> http://wpkg.org
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>


-- 
---------------------------------------------------------------


CERN – European Organization for Nuclear
IT Department,  CH-1211 Geneva 23, Switzerland

Phone: +41 (0) 22 767 7996
Fax:     +41 (0) 22 767 4900
E-mail : Omer.Khalid@cern.ch
Homepage: http://cern.ch/Omer.Khalid


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Hello Tom,

We had the same need exactly as you. So I wrote a python script, part of the
vGrid project at CERN, runs on each of node which have Xen/Libvirt
installed.

It provides two views: Detailed view (
Xen<http://vgrid.web.cern.ch/vgrid/demo/xen.htm>),
Brief view (Load <http://vgrid.web.cern.ch/vgrid/demo/load.htm>)

I am attaching the two snapshots.

XenView <http://vgrid.web.cern.ch/vgrid/demo/xenview.htm> basically
publishes "xm list" command to a web page, and the top layer
aggregates the
whole cluster.

LoadView <http://vgrid.web.cern.ch/vgrid/demo/loadview.htm> basically
shows
the host name and the number of virtual machines its running. And there is
color code which changes as number of virtual machines increases/decreases.
This is very helpful to see at just one glance that what the status over the
whole test bed.

The top layer is in PHP, which reads the list of nodes in your cluster from
a configuration file. Thus its very configurable and adaptable.

Some one else later proposed to have such a tool on sourceforge, so I would
be happy to put it up there and lets the community, together, take care of
it. Because these are issues which concerns all of us.

I look forward to the feed back.

Best Regards
Omer

Links:
-------

[1] http://vgrid.web.cern.ch/vgrid/demo/xen.htm
[2] http://vgrid.web.cern.ch/vgrid/demo/load.htm
[3] http://vgrid.web.cern.ch/vgrid/demo/xenview.htm
[4]
http://vgrid.web.cern.ch/vgrid/demo/loadview.htm<http://vgrid.web.cern.ch/vgrid/demo/load.htm>




On 2/16/07, Tomasz Chmielewski <mangoo@wpkg.org>
wrote:
>
> Simons IT-Service schrieb:
> > Hello Tomasz,
> >
> > I use openQRM to manage my servers.
> >
> > Look here: www.openqrm.org
>
>
> This looks a bit like an overkill for me to do these tasks:
>
> >> I''m looking for a tool capable of:
> >>
> >> - displaying all guests started on separate Xen hosts
> >> - migrating guests from one host to another
> >> - starting/stopping guests on specified Xen hosts - this should
> >> prevent starting/running two same guests on two Xen hosts at the
same
> >> time
>
>
> Anything more Xen-specific (like multiple-Xen-hosts enabled "xm"
> command, possibly with a basic web interface)?
>
>
> --
> Tomasz Chmielewski
> http://wpkg.org
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>


-- 
---------------------------------------------------------------


CERN – European Organization for Nuclear
IT Department,  CH-1211 Geneva 23, Switzerland

Phone: +41 (0) 22 767 7996
Fax:     +41 (0) 22 767 4900
E-mail : Omer.Khalid@cern.ch
Homepage: http://cern.ch/Omer.Khalid

-- 
---------------------------------------------------------------


CERN – European Organization for Nuclear
IT Department,  CH-1211 Geneva 23, Switzerland

Phone: +41 (0) 22 767 7996
Fax:     +41 (0) 22 767 4900
E-mail : Omer.Khalid@cern.ch
Homepage: http://cern.ch/Omer.Khalid


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Ingard Mevåg schrieb:
> Tomasz Chmielewski wrote:
>   
>> Daniel P. Berrange schrieb:
>>     
>>> On Fri, Feb 16, 2007 at 05:18:48PM +0100, Tomasz Chmielewski wrote:
>>>       
>>>> S.Ça??lar Onur schrieb:
>>>>         
>>>>> 16 ??ub 2007 Cum tarihinde, Tomasz Chmielewski ??unlar??
yazm????t??:
>>>>>           
>>>>>> Anything more Xen-specific (like multiple-Xen-hosts
enabled "xm"
>>>>>> command, possibly with a basic web interface)?
>>>>>>             
>>>>> Maybe you can use Xenman <only python and some modules
needed)
>>>>> [http://xenman.sourceforge.net/] or virt-manager (libvirt
etc.
>>>>> needed) [http://xenman.sourceforge.net/] ?
>>>>>           
>>>> As I checked, XenMan doesn''t support domain migration.
It also needs
>>>> a whole Xen installation, so it can''t be really
installed for
>>>> example on sysadmin''s laptop.
>>>>
>>>> And virt-manager doesn''t even seem to support multiple
Xen hosts.
>>>>         
>>> The ability to manage multiple hosts remotely is work in progress.
>>> Rather
>>> than hacking something in using SSH tunnelling, we''re
trying to get a
>>> long term supportable remote management capability written in
libvirt
>>> which will support Xen, QEMU, KVM to avoid lock-in to one virt
>>> platform. I expect
>>> it''ll be 2-3 months before we do a release of virt-manager
which enables
>>> this remote management capability.
>>>       
>> Very nice.
>> I''ll look carefully at virt-manager then.
>>
>>
>>     
> Might be worth checking out MLN also..
>
> http://mln.sourceforge.net/
>
> Ingard
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>
>   
Hi,

I developed an Webinterface for exact that use. It is capable of 
managing multiple xenhosts with no limit yet discovered. The concept is 
based on the client(python)/server(php/mysql) concept.
In our company we are managing about 10 so called Xenclusters. Just 
recently we release Version 1.6.3b.
In the beginning I created a project in Sourceforge 
sourceforge.net/projects/phpmyxen. I will update it soon with the new 
version and english language support. Looking forward for some testers ;)

Mattes

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