[one-users] Private cloud with Front-end on Virtual MAchine HA
Hi all, someone have some documentation for a sample of private cloud structure with: - Two nodes in HA - Front-end on virtual machine HA With storage file system on glusterfs Thanks all.. GD ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
Re: [one-users] Private cloud with Front-end on Virtual MAchine HA
Hi, Do you mean to have the frontend (OpenNebula management) running on the actual OpenNebula cluster? If that's the case then I would also be very interested in this scenario :) As for GlusterFS, we've followed these instructions with success: - http://docs.opennebula.org/4.10/ - http://docs.opennebula.org/4.10/administration/storage/gluster_ds.html Also, all other instructions that we found were also on the documentation site. With it, we've created the following: - *GlusterFS:* Two storage hosts (running CentOS 7) in the back-end which provide the whole image/datastore for OpenNebula. HA is setup via round robin DNS. After testing we've found this to work quite well in terms of performance and redundancy (better then expected). All network ports are setup as a bond using balance-alb. - *Hypervisors: *a.t.m. 4 hypervisors (will eventually grow to 8) running CentOS 7. They have 2 network ports setup using bonding with balance-alb, they are connected to the virt/storage VLAN. And two network ports setup in a bond using active-backup, this is used for the bridge port (with VLAN tagging enabled). Active-backup seems to be the proper setting for a bridge port since a bridge can't work that well with balance-alb. - *OpenNebula management node:* This includes the OpenNebula daemon, sunstone and all other functions. Currently, since we're building up this environment. Hypervisors and storage have been arranged and we're happy with how those parts are setup, however the management node is currently still something we're not very sure about. We're considering buying two physical servers to do this job and create an active backup solution as described in the documentation: http://docs.opennebula.org/4.10/advanced_administration/high_availability/oneha.html. However, buying hardware just for this seems a waste since these servers won't be doing that much (resource wise). - We do have plans on testing this node, dual, on the actual OpenNebula cluster. But something is holding us back. I can't find any proof of someone achieving this. Also, we're seeing some issues that might occur when OpenNebula is managing itself (e.g. live migration, reboot, shutdown, etc.). - *Virtual machine HA setup: *We haven't actually started with this part yet, but this document describes on how you can create a setup where virtual machines become HA: http://docs.opennebula.org/4.10/advanced_administration/high_availability/ftguide.html For us this is something we'll probably start looking into once we've found a proper setup for the OpenNebula management node. Hopefully this info helps you a little and I also hope someone else can elaborate on running OpenNebula as a VM on it's own cluster. Or, at least other best practices on how to run OpenNebula in a VM without buying two physical servers for this job, (any insight on this subject would be helpful :) -- Bart 2014-11-13 9:50 GMT+01:00 Giancarlo De Filippis gdefilip...@ltbl.it: Hi all, someone have some documentation for a sample of private cloud structure with: - Two nodes in HA - Front-end on virtual machine HA With storage file system on glusterfs Thanks all.. GD ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org -- Bart G. ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
Re: [one-users] Private cloud with Front-end on Virtual MAchine HA
Thanks so much Bart, That's the case. because vm running on cluster is more similar to VMware HA solution (only two hosts without front-end) For the glusterfs i've already used this solution on my public cloud with success. You helped me for port-setup of hypervisors :) I hope (like you) that someone (users or OpenNebula Team) have best practices on how to run OpenNebula in a VM. Thks. Giancarlo Il 13/11/2014 11:38 Bart ha scritto: Hi, Do you mean to have the frontend (OpenNebula management) running on the actual OpenNebula cluster? If that's the case then I would also be very interested in this scenario :) As for GlusterFS, we've followed these instructions with success: * http://docs.opennebula.org/4.10/ [2] * http://docs.opennebula.org/4.10/administration/storage/gluster_ds.html [3] Also, all other instructions that we found were also on the documentation site. With it, we've created the following: * GLUSTERFS: Two storage hosts (running CentOS 7) in the back-end which provide the whole image/datastore for OpenNebula. HA is setup via round robin DNS. After testing we've found this to work quite well in terms of performance and redundancy (better then expected). All network ports are setup as a bond using balance-alb. * HYPERVISORS: a.t.m. 4 hypervisors (will eventually grow to 8) running CentOS 7. They have 2 network ports setup using bonding with balance-alb, they are connected to the virt/storage VLAN. And two network ports setup in a bond using active-backup, this is used for the bridge port (with VLAN tagging enabled). Active-backup seems to be the proper setting for a bridge port since a bridge can't work that well with balance-alb. * OPENNEBULA MANAGEMENT NODE: This includes the OpenNebula daemon, sunstone and all other functions. Currently, since we're building up this environment. Hypervisors and storage have been arranged and we're happy with how those parts are setup, however the management node is currently still something we're not very sure about. We're considering buying two physical servers to do this job and create an active backup solution as described in the documentation: http://docs.opennebula.org/4.10/advanced_administration/high_availability/oneha.html [4]. However, buying hardware just for this seems a waste since these servers won't be doing that much (resource wise). * We do have plans on testing this node, dual, on the actual OpenNebula cluster. But something is holding us back. I can't find any proof of someone achieving this. Also, we're seeing some issues that might occur when OpenNebula is managing itself (e.g. live migration, reboot, shutdown, etc.). * VIRTUAL MACHINE HA SETUP: We haven't actually started with this part yet, but this document describes on how you can create a setup where virtual machines become HA: http://docs.opennebula.org/4.10/advanced_administration/high_availability/ftguide.html [5] For us this is something we'll probably start looking into once we've found a proper setup for the OpenNebula management node. Hopefully this info helps you a little and I also hope someone else can elaborate on running OpenNebula as a VM on it's own cluster. Or, at least other best practices on how to run OpenNebula in a VM without buying two physical servers for this job, (any insight on this subject would be helpful :) -- Bart 2014-11-13 9:50 GMT+01:00 Giancarlo De Filippis gdefilip...@ltbl.it: Hi all, someone have some documentation for a sample of private cloud structure with: - Two nodes in HA - Front-end on virtual machine HA With storage file system on glusterfs Thanks all.. GD ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org [1] -- Bart G. Links: -- [1] http://lists.opennebula.org/listinfo.cgi/users-opennebula.org [2] http://docs.opennebula.org/4.10/ [3] http://docs.opennebula.org/4.10/administration/storage/gluster_ds.html [4] http://docs.opennebula.org/4.10/advanced_administration/high_availability/oneha.html [5] http://docs.opennebula.org/4.10/advanced_administration/high_availability/ftguide.html___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
Re: [one-users] Bulk delete of vCenter VM's leaves stray VM's
Hi, We have opened an issue to track this problem: http://dev.opennebula.org/issues/3334 Meanwhile you can decrease the number of actions sent changing in /etc/one/oned.conf the parameter -t (number of threads) for VM driver. For example: VM_MAD = [ name = vcenter, executable = one_vmm_sh, arguments = -p -t 2 -r 0 vcenter -s sh, type = xml ] Cheers On Wed Nov 12 2014 at 5:40:00 PM Sebastiaan Smit b...@echelon.nl wrote: Hi list, We're testing the vCenter functionality in version 4.10 and see some strange behaviour while doing bulk actions. Deleting VM's sometimes leave stray VM's on our cluster. We see the following in de VM log: Sun Nov 9 15:51:34 2014 [Z0][LCM][I]: New VM state is RUNNING Wed Nov 12 17:30:36 2014 [Z0][LCM][I]: New VM state is CLEANUP. Wed Nov 12 17:30:36 2014 [Z0][VMM][I]: Driver command for 60 cancelled Wed Nov 12 17:30:36 2014 [Z0][DiM][I]: New VM state is DONE Wed Nov 12 17:30:41 2014 [Z0][VMM][W]: Ignored: LOG I 60 Command execution fail: /var/lib/one/remotes/vmm/vcenter/cancel '423cdcae-b6b3-07c1-def6-96b9f3f4b7b3' 'demo-01' 60 demo-01 Wed Nov 12 17:30:41 2014 [Z0][VMM][W]: Ignored: LOG I 60 Cancel of VM 423cdcae-b6b3-07c1-def6-96b9f3f4b7b3 on host demo-01 failed due to ManagedObjectNotFound: The object has already been deleted or has not been completely created Wed Nov 12 17:30:41 2014 [Z0][VMM][W]: Ignored: LOG I 60 ExitCode: 255 Wed Nov 12 17:30:41 2014 [Z0][VMM][W]: Ignored: LOG I 60 Failed to execute virtualization driver operation: cancel. Wed Nov 12 17:30:41 2014 [Z0][VMM][W]: Ignored: LOG I 60 Successfully execute network driver operation: clean. Wed Nov 12 17:30:41 2014 [Z0][VMM][W]: Ignored: CLEANUP SUCCESS 60 We see it in a different manner while bulk creating VM's (20+ at a time): Sun Nov 9 16:01:34 2014 [Z0][DiM][I]: New VM state is ACTIVE. Sun Nov 9 16:01:34 2014 [Z0][LCM][I]: New VM state is PROLOG. Sun Nov 9 16:01:34 2014 [Z0][LCM][I]: New VM state is BOOT Sun Nov 9 16:01:34 2014 [Z0][VMM][I]: Generating deployment file: /var/lib/one/vms/81/deployment.0 Sun Nov 9 16:01:34 2014 [Z0][VMM][I]: Successfully execute network driver operation: pre. Sun Nov 9 16:01:36 2014 [Z0][VMM][I]: Command execution fail: /var/lib/one/remotes/vmm/vcenter/deploy '/var/lib/one/vms/81/deployment.0' 'demo-01' 81 demo-01 Sun Nov 9 16:01:36 2014 [Z0][VMM][I]: Deploy of VM 81 on host demo-01 with /var/lib/one/vms/81/deployment.0 failed due to undefined method `uuid' for nil:NilClass Sun Nov 9 16:01:36 2014 [Z0][VMM][I]: ExitCode: 255 Sun Nov 9 16:01:36 2014 [Z0][VMM][I]: Failed to execute virtualization driver operation: deploy. Sun Nov 9 16:01:36 2014 [Z0][VMM][E]: Error deploying virtual machine Sun Nov 9 16:01:36 2014 [Z0][DiM][I]: New VM state is FAILED Wed Nov 12 17:30:19 2014 [Z0][DiM][I]: New VM state is DONE. Wed Nov 12 17:30:19 2014 [Z0][LCM][E]: epilog_success_action, VM in a wrong state I think these have two different root causes. The cluster is not under load. Has anyone else seen this behaviour? Best regards, -- Sebastiaan Smit Echelon BV E: b...@echelon.nl W: www.echelon.nl T: (088) 3243566 (gewijzigd nummer) T: (088) 3243505 (servicedesk) F: (053) 4336222 KVK: 06055381 ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
Re: [one-users] How do you change the '-vga cirrus' option on KVM
Hi Daniel, Thanks for the info. In general, do you know what the mapping is between the XML 'model type' and the parameter that gets passed to KVM via the -vga switch? Regards, Gerry On 10/11/2014 18:04, Daniel Dehennin wrote: Gerry O'Brien ge...@scss.tcd.ie writes: Hi, Hello, How do you change the '-vga cirrus' option for KVM to something else, e.g. '-vga std'? Is it done via the RAW data in the template? That's how I do it: RAW=[TYPE=kvm,DATA=devicesvideomodel type=\vga\ heads=\1\/model/video/devices] It could be interesting to be able to select it in the template: 1. provide a default in /etc/one/vmm_exec/vmm_exec_kvm.conf (cirrus for example) 2. if graphics is “SPICE”, set the card to “qxl” in the template 2. user can override the card type for this template If you define the RAW DATA in /etc/one/vmm_exec/vmm_exec_kvm.conf, then you can not override it in the template because RAW are concatenated. Regards. ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org -- Gerry O'Brien Systems Manager School of Computer Science and Statistics Trinity College Dublin Dublin 2 IRELAND 00 353 1 896 1341 ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
Re: [one-users] econe server and sha1
Hi Alejandro, I cannot find out the problem: [oneadmin@node1 ~]$ oneuser show | grep PASSWORD PASSWORD: 86f7e437faa5a7fce15d1ddcb9eaeaea [oneadmin@node1 ~]$ econe-describe-instances --access-key oneadmin --secret-key 86f7e437faa5a7fce15d 1ddcb9eaeaea instanceId ImageId State IP instanceType i- pending i-0001 running Let's check a few thins: * Any relevant error in econe.log|error oned.log|error * Could you try using -K and -S options instead of the verbose ones * You can use the euc2ools to interact with the econe server, are you getting the same error with this cli? Cheers On 12 November 2014 13:18, Alejandro Feijóo alfei...@cesga.es wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA512 hi! # # Auth # # Authentication driver for incomming requests # - ec2, default Acess key and Secret key scheme # - x509, for x509 certificates based authentication :auth: ec2 # Authentication driver to communicate with OpenNebula core # - cipher, for symmetric cipher encryption of tokens # - x509, for x509 certificate encryption of tokens :core_auth: cipher in sunstone-server we have: :auth: opennebula :core_auth: cipher El 11/11/14 15:02, Daniel Molina escribió: Hi, What auth driver are you using in econe.conf? Cheers On 10 November 2014 09:17, Alejandro Feijóo alfei...@cesga.es wrote: Any idea where to touch... because still with the same error. [oneadmin@test11 ~]$ oneuser show 17 USER 17 INFORMATION ID : 17 NAME: alfeijooec2 GROUP : users PASSWORD: 30e3ef7255df9b52fa130697ef83348f7ed5 AUTH_DRIVER : core ENABLED : Yes USER TEMPLATE DEFAULT_VIEW=user TOKEN_PASSWORD=7aafcdf5de6b49c4bbc8e31787a674080c9c RESOURCE USAGE QUOTAS DATASTORE ID IMAGESSIZE 1 1 /- 40M /- [oneadmin@test11 ~]$ econe-describe-images --access-key alfeijooec2 --secret-key 30e3ef7255df9b52fa130697ef83348f7ed5 econe-describe-images: The username or password is not correct [oneadmin@test11 ~]$ econe-describe-images --access-key alfeijooec2 --secret-key 7aafcdf5de6b49c4bbc8e31787a674080c9c econe-describe-images: The username or password is not correct pd. alfeijooec2 can instantiate mv through ONE and Sunstone. Thanks again :D El 06/11/14 09:27, Daniel Molina escribió: That's right, if you use alfeijooec2 through ec2 you don't have to change anything, just use the password returned by oneshow user show alfeijooec2 as AWS_SECRET_KEY On 6 November 2014 09:23, Alejandro Feijóo alfei...@cesga.es wrote: Oh... I have that 2 users. 14 alfeijoousers ldap 1 / - 1024M / - 1.0 / - 17 alfeijooec2 users core - - - I understant that user 14 never work in these scenario? but user 17 may? Thanks :) El 06/11/14 08:56, Daniel Molina escribió: Hi, LDAP authentication is not supported through ec2, at least using regular clients. If you want to use this kind of authentication you have to change the auth method to opennebla in the econe.conf file and include the Basic Auth headers in every ec2 request Cheers On 6 November 2014 08:27, Alejandro Feijóo alfei...@cesga.es wrote: Hi sorry for the delay... i was on vacation... Yes that was one of the test that i did... but with the same error. its possible any kind of problems when use ldap? any random recomendation? :D Thanks in advance. El 24/10/14 10:30, Daniel Molina escribió: ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org - -- Alejandro Feijóo Fraga Systems Technician CESGA -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.22 (Darwin) Comment: GPGTools - https://gpgtools.org iQEcBAEBCgAGBQJUY1AwAAoJEKshAoM6XWq5LTIH/0vdyauqZcWr6MdemCEKPzM3 i01ZBGMXkHdbvJLI2y2WN6kiseIMPJMzPvOEmvDVDEnfoMQ8TpLRKi7XL4lKFLs7 YSACDWsz9Kq58fCsVKXr/WXs7HPiDdtN615UrUdRk0DbC78PRJ4vTbhLZMmUQ4Z1 rTB3GJxJiGcfAt0AREOb7DRJXL2sQLpYfy0ejpHfpx69DT1cFbm7ntPbhN/D5KiO 60ErHu690Np7jdS2b4jyIvUwdCuBXa3lTEuBT/5qj14zYt6DI1ZrjltBHZhlM+80 87h01cME22tg1+fhTsS4+FDbvqg8xcfEAN+lJ43/1lGWErZT8tGdrgozH6gk2Hs= =7Frd -END PGP SIGNATURE- -- -- Daniel Molina Project Engineer OpenNebula - Flexible Enterprise Cloud Made Simple www.OpenNebula.org | dmol...@opennebula.org | @OpenNebula
[one-users] How to fix hosts with deleted /var/tmp/one files
In several occasions in the past I have forgotten to tell my tmpwatch utility not to delete files out of /var/tmp/one and thus I have seen most of the remotes get deleted off of my cloud hosts, but opennebula 4.8 doesn't report any problems. I try to fix the remotes by doing onehost sync and nothing happens. I try to disable/enable the host and nothing happens there either. The only thing that seems to revive it is if I actually onehost delete/ onehost create. IS it possible for the remotes to add an integrity check? They should not be reporting the host is on if the datastores directory of remotes has been totally deleted. Also is it possible to configure the directory other than the default /var/tmp/one? Finally is it possible to redistribute the remotes short of a onehost delete / onehost create? Steve Timm -- Steven C. Timm, Ph.D (630) 840-8525 t...@fnal.gov http://home.fnal.gov/~timm/ Office: Wilson Hall room 804 Fermilab Scientific Computing Division, Currently transitioning from: Scientific Computing Services Quadrant Grid and Cloud Services Dept., Associate Dept. Head for Cloud Computing To: Scientific Computing Facilities Quadrant., Experimental Computing Facilities Dept., Project Lead for Virtual Facility Project. ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
[one-users] Picking certain fields /USER/NAME out of $USER[TEMPLATE]
Under OpenNebula 3.2 we would include in the contextualization section the field $USER[TEMPLATE] and then add a contextualization script such that we would grab the field /USER/NAME out of the base64 encoded template information. In Opennebula 4.8 you can still put $USER[TEMPLATE] into your contextualization but now there is a lot more junk in $USER[TEMPLATE], namely all the key pairs that have been created via ec2CreateKeyPair for each user. At first we did not know what was happening because $USER[TEMPLATE] grew to over 300kb, a size that actually breaks bash! (you can't assign a shell variable to a value that big). So now the question is--is there a way to include only the user name field of the template in the contextualization section, and nothing else, through some combination of ruby syntax. If so, how? Steve Timm -- Steven C. Timm, Ph.D (630) 840-8525 t...@fnal.gov http://home.fnal.gov/~timm/ Office: Wilson Hall room 804 Fermilab Scientific Computing Division, Currently transitioning from: Scientific Computing Services Quadrant Grid and Cloud Services Dept., Associate Dept. Head for Cloud Computing To: Scientific Computing Facilities Quadrant., Experimental Computing Facilities Dept., Project Lead for Virtual Facility Project. ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
Re: [one-users] How do you change the '-vga cirrus' option on KVM
Gerry O'Brien ge...@scss.tcd.ie writes: Hi Daniel, Thanks for the info. In general, do you know what the mapping is between the XML 'model type' and the parameter that gets passed to KVM via the -vga switch? I found it in the libvirt documentation[1]. Regards. Footnotes: [1] http://libvirt.org/formatdomain.html#elementsVideo -- Daniel Dehennin Récupérer ma clef GPG: gpg --recv-keys 0xCC1E9E5B7A6FE2DF Fingerprint: 3E69 014E 5C23 50E8 9ED6 2AAD CC1E 9E5B 7A6F E2DF signature.asc Description: PGP signature ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
Re: [one-users] Ports OpenNebula
Hi, On Wed, Nov 12, 2014 at 11:16 AM, Maria Jular maria.ju...@fcsc.es wrote: Hello everyone, Is there an OpenNebula document where all necessary ports to access the platform from remote sites appear? We don't have a document specifically for that, but you can find all the needed ports in the conf files. For sunstone [1], you will need to open :port and :vnc_proxy_port. By default, 9869 and 29876. If you also need to access oned, to use the CLI remotely, the port is in oned.conf [2]. OneFlow is a separate server, and you need to open its port [3] also to use the CLI remotely. Regards [1] http://docs.opennebula.org/4.10/administration/sunstone_gui/sunstone.html#configuration [2] http://docs.opennebula.org/4.10/administration/references/oned_conf.html [3] http://docs.opennebula.org/4.10/advanced_administration/application_flow_and_auto-scaling/appflow_configure.html -- Carlos Martín, MSc Project Engineer OpenNebula - Flexible Enterprise Cloud Made Simple www.OpenNebula.org http://www.opennebula.org/ | cmar...@opennebula.org | @OpenNebula http://twitter.com/opennebula ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
[one-users] IOPS in quota section for 4.12
Hi Team, I think we should add IOPS in quota section where in oneadmin can assign IOPS at user and group level. For example : -- Oneadmin assigns 2000 IOPS to a particular user, which means that particular user should not exceed 2000 IOPS on his total number of VM that he is running. -- After IOPS is assigned to user/group through quota section, Cloud view user should be able to assign IOPS at VM disks level as per his choice. (eg: if a user/group is assigned quota of 2000 IOPS then he should have the ability to set IOPS of the VM disk before starting the VM.) User/Group have total IOPS Quota = 2000 User Sets IOPS at Disk Level : Virtual Machine OS disk = 300 IOPS Virtual Machine Data Disk = 300 IOPS Total remaining IOPS = 1400 IOPS I really think this feature should be a must add in quota section as it will easy many things related to default way of assigning IOPS to VM. Regards Kiran Ranjane ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
Re: [one-users] IOPS in quota section for 4.12
Good idea. In general it would be nice to be able to set the various quantities which can be controlled by the RHEV extended libvirt functions which include IOPS but also network bandwidth. Steve From: Users [users-boun...@lists.opennebula.org] on behalf of kiran ranjane [kiran.ranj...@gmail.com] Sent: Thursday, November 13, 2014 5:16 PM To: users Subject: [one-users] IOPS in quota section for 4.12 Hi Team, I think we should add IOPS in quota section where in oneadmin can assign IOPS at user and group level. For example : -- Oneadmin assigns 2000 IOPS to a particular user, which means that particular user should not exceed 2000 IOPS on his total number of VM that he is running. -- After IOPS is assigned to user/group through quota section, Cloud view user should be able to assign IOPS at VM disks level as per his choice. (eg: if a user/group is assigned quota of 2000 IOPS then he should have the ability to set IOPS of the VM disk before starting the VM.) User/Group have total IOPS Quota = 2000 User Sets IOPS at Disk Level : Virtual Machine OS disk = 300 IOPS Virtual Machine Data Disk = 300 IOPS Total remaining IOPS = 1400 IOPS I really think this feature should be a must add in quota section as it will easy many things related to default way of assigning IOPS to VM. Regards Kiran Ranjane ___ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
