[et-mgmt-tools] Re: Virt-manager: 5.0, 5.1, 5.2 fail in, Fedora 7
Lawrence Nitz
lnitz at hawaii.edu
Sun Oct 21 06:11:15 UTC 2007
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> Today's Topics:
>
> 1. What's new in Cobbler development lately (Michael DeHaan)
> 2. Re: What's new in Cobbler development lately (Michael DeHaan)
> 3. Re: Virt-manager: 5.0, 5.1, 5.2 fail in Fedora 7
> (Lawrence H Nitz)
> 4. Re: Re: Virt-manager: 5.0, 5.1, 5.2 fail in Fedora 7
> (Hugh O. Brock)
> 5. Re: What's new in Cobbler development lately (Aaron Lippold)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 19 Oct 2007 17:03:19 -0400
> From: Michael DeHaan <mdehaan at redhat.com>
> Subject: [et-mgmt-tools] What's new in Cobbler development lately
> To: "'et-mgmt-tools at redhat.com'" <et-mgmt-tools at redhat.com>
> Message-ID: <47191B97.2010401 at redhat.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> A few things of interest to a few people.... There are still a few
> things upstream that I want to get done before pushing 0.6.3 out.
> However, it's worth talking about what is already there, in case anyone
> is interested in those features and would like to play with/test them
> now.
>
> First off -- performance upgrades. Cobbler does great now with an
> average number of records, but performance with a very large number of
> systems in the "database" could be better. By switching all serializers
> (except settings) to serializer_shelve in /etc/cobbler/auth.conf,
> cobbler gets a lot faster for very large configurations. This is
> because changes to the cobbler "database" can be made without
> reading/writing the whole file. I'm still undecided as to whether
> this should
> be the default for new Cobbler installs, but there will be a script to
> migrate users between formats for those that have existing
> configurations. With the new code, it's possible
> to run a "cobbler list" command and see 5000 entries come back in 2
> seconds -- before, YAML parsing/loading would have made storing a config
> that large in YAML somewhat painful. Currently this is using BSD-DB
> (which some of you said is scary, fair enough), though we could also use
> gddb. I've tested both and performance is identical. sqlite is
> possible, but maybe not needed. You can read more here:
> https://hosted.fedoraproject.org/projects/cobbler/wiki/AlternativeSerializers
>
> Second -- there was a request to extend the idea of Cobbler triggers (
> https://hosted.fedoraproject.org/projects/cobbler/wiki/CobblerTriggers )
> to support a "sync" trigger. We have that now. For instance, now we
> have the service-restart code as a trigger. So by default it will
> restart dhcpd/dnsmasq after a cobbler sync if you have DHCP management
> turned on. If you don't, it does nothing. However, suppose you wanted
> Cobbler to push out DHCP configurations to multiple servers? No
> problem! Now you can modify the trigger yourself and make it do
> whatever you want, all without modifying Cobbler code.
>
> Both making things more modular (for arbitrary user extensibility) and
> making things scale for extremely large configurations will definitely
> be an ongoing focus for subsequent releases.
>
> If you're interested in any of the above, check out the git version
> control repo.
>
> --Michael
>
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 19 Oct 2007 17:05:29 -0400
> From: Michael DeHaan <mdehaan at redhat.com>
> Subject: Re: [et-mgmt-tools] What's new in Cobbler development lately
> To: Fedora/Linux Management Tools <et-mgmt-tools at redhat.com>
> Message-ID: <47191C19.9040402 at redhat.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Michael DeHaan wrote:
>
>> By switching all serializers (except settings) to serializer_shelve in
>> /etc/cobbler/auth.conf, cobbler gets a lot faster for very large
>> configurations.
>>
>
> This should read /etc/cobbler/modules.conf.
>
>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 19 Oct 2007 11:16:56 -1000
> From: Lawrence H Nitz <lnitz at hawaii.edu>
> Subject: [et-mgmt-tools] Re: Virt-manager: 5.0, 5.1, 5.2 fail in
> Fedora 7
> To: et-mgmt-tools at redhat.com
> Message-ID: <f5e7c4dc2fbe1.47189228 at hawaii.edu>
> Content-Type: text/plain; charset=us-ascii
>
> Thanks for the kind responses.
>
> I think there may be other problems, since I do not see any create buttons in any portion of my 0.5.2 virt-manager screen. I may have contaminated the installation in moving from one release to another. I suspect that the python archive called in the program may be ruined.
>
> Is there a straightforward way to uninstall all of the virt-manager directories, so that I can do a truly clean install?
> Thanks, Larry Nitz
>
>
>
> ------------------------------
>
> Message: 4
> Date: Fri, 19 Oct 2007 17:26:31 -0400
> From: "Hugh O. Brock" <hbrock at redhat.com>
> Subject: Re: [et-mgmt-tools] Re: Virt-manager: 5.0, 5.1, 5.2 fail in
> Fedora 7
> To: Fedora/Linux Management Tools <et-mgmt-tools at redhat.com>
> Message-ID: <20071019212631.GI15667 at redhat.com>
> Content-Type: text/plain; charset=us-ascii
>
> On Fri, Oct 19, 2007 at 11:16:56AM -1000, Lawrence H Nitz wrote:
>
>> Thanks for the kind responses.
>>
>> I think there may be other problems, since I do not see any create buttons in any portion of my 0.5.2 virt-manager screen. I may have contaminated the installation in moving from one release to another. I suspect that the python archive called in the program may be ruined.
>>
>> Is there a straightforward way to uninstall all of the virt-manager directories, so that I can do a truly clean install?
>>
>
> Are you running virt-manager as root? The UI won't show a create
> button unless the connection to your hypervisor is fully
> privileged. Speaking of which, are you using the Xen hypervisor, or
> KVM? And, do you see any guests you have previously defined (if you
> defined any)?
>
> --Hugh
>
>
>
> ------------------------------
>
> Message: 5
> Date: Fri, 19 Oct 2007 21:48:38 -0400
> From: "Aaron Lippold" <lippold at gmail.com>
> Subject: Re: [et-mgmt-tools] What's new in Cobbler development lately
> To: "Fedora/Linux Management Tools" <et-mgmt-tools at redhat.com>
> Message-ID:
> <39d2723b0710191848j3ddc224eg29f17aef69f9b3a at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi Mike and gang,
>
> These sound like some great enhancements. I was hoping the list and
> yourself might help me work out some things.
>
> I am going to be putting together a new infrastructure for the open
> source group at my organization and I was thinking about setting up a
> virt enviroment for my production services. Webserver,
> development/project enviroment - i.e. svn, bugs, tickets, etc. most
> likely trac or sourceforge - a gnumailman service, etc. I was thinking
> that, if I did this, it might be smart to double up in a kind of virt
> HA setup. Do you know anyone who has setup this type of thing and how
> they are succeeding with it.
>
> Also, for my testing and pre-deployment I was going to use another
> virt env. This most likely wouldn't have to be HA.
>
> I, of course, was going to use virt-manager to help manage this setup.
> Thoughts? Suggestions?
>
> Specifically what level of hardware would really be needed for a
> medium load - 10-15 projects - 100 general users etc. I was thinking
> about a 2 cpu dual or quad core setup with a SAN for the virt images
> etc. This would be the first deployment of an infrastructure which was
> virt rather than individual systems. Thoughts?
>
> Thanks,
>
> Aaron
>
>
>
> On 10/19/07, Michael DeHaan <mdehaan at redhat.com> wrote:
>
>> Michael DeHaan wrote:
>>
>>> By switching all serializers (except settings) to serializer_shelve in
>>> /etc/cobbler/auth.conf, cobbler gets a lot faster for very large
>>> configurations.
>>>
>> This should read /etc/cobbler/modules.conf.
>>
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> End of et-mgmt-tools Digest, Vol 14, Issue 27
> *********************************************
>
Thank, Hugh!
I opened virt-manager explicitly from a root terminal window this
evening. Once I connect to the Xen hypervisor, I can see two machines
that I made last week, and have the Open and Detatils buttons on the
bottom right of the main screen. There is no Create button, even though
I am running as root.
I have options of Run, Pause, Shutdown, Details, Open in the right mouse
button click over the machines. I can open and start either of the two
machines, and the machines show cpu and memory usage, but without a
window in which to see the execution.
I cannot bring up a response to the Details menu option on any of the
machines-- Domain-0 or the two guests I had created.
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