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Re: [CentOS-virt] CentOS 7 AMI Building
by yassine kool 21 Apr '15

21 Apr '15

Envoyé à partir de mon Windows Phone -----Message d'origine----- De : "Jason Antman" <jason(a)jasonantman.com> Envoyé : ‎17/‎04/‎2015 06:23 À : "Discussion about the virtualization on CentOS" <centos-virt(a)centos.org> Objet : Re: [CentOS-virt] CentOS 7 AMI Building Ok, thanks so much! That'll do fine. The only other bits mentioned on http://wiki.centos.org/Cloud/AWS in "Image Builder Notes" were the random root password, SELinux enabled, and relabel at first boot, which are easy enough. Thanks so much, Jason On Fri, Apr 17, 2015 at 12:20 PM, Karanbir Singh <mail-lists(a)karan.org> wrote: I highly recommend actually looking at the images :) its just a minimal install with cloud-init from extras/ added in ( for 7, the 6 ones dont have cloud-init ). the installed content delivered from the minimal.iso and the ami's should be identical in pretty much every respect. If you really want a kickstart for it, I can build one, but just run a minimal.iso install, add cloud-init to the %packages and bob's your uncle. On 16/04/15 17:48, Jason Antman wrote: > Yes... we currently use Packer to achieve a repeatable build process, > from scratch. We'd like to replicate that and be able to build from > scratch without spinning up an EC2 instance, in an automated way. > > I don't know how to phrase this, so apologies if it comes across wrong, > I have immense respect for you personally and for CentOS... but, is it > really that difficult to post the kickstarts and/or build scripts > somewhere? Or at least enough of them to replicate something similar? > > Thanks, > Jason > > On Thu, Apr 16, 2015 at 3:56 AM, Karanbir Singh <mail-lists(a)karan.org > <mailto:mail-lists@karan.org>> wrote: > > On 04/14/2015 12:48 PM, Jason Antman wrote: > > Hello, > > > > I'm new to this list, but I noticed a post from March 30th inquiring > > about the build scripts for the official CentOS7 AMIs. I'm also > > interested in this; I'm tasked with (unfortunately) spinning up some VMs > > in our corporate VMWare environment that are "as close as possible" to > > the official CentOS7 AMIs. I could attempt to reverse-engineer them and > > do you need to do much more than qemu-img convert -O vmdk > <centos-genericcloud.qcow2> ? > > > -- > Karanbir Singh > +44-207-0999389 <tel:%2B44-207-0999389> | http://www.karan.org/ | > twitter.com/kbsingh <http://twitter.com/kbsingh> > GnuPG Key : http://www.karan.org/publickey.asc > _______________________________________________ > CentOS-virt mailing list > CentOS-virt(a)centos.org <mailto:CentOS-virt@centos.org> > http://lists.centos.org/mailman/listinfo/centos-virt > > > > > _______________________________________________ > CentOS-virt mailing list > CentOS-virt(a)centos.org > http://lists.centos.org/mailman/listinfo/centos-virt > -- Karanbir Singh +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh GnuPG Key : http://www.karan.org/publickey.asc _______________________________________________ CentOS-virt mailing list CentOS-virt(a)centos.org http://lists.centos.org/mailman/listinfo/centos-virt

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Re: [CentOS-virt] CentOS 7 AMI Building
by yassine kool 21 Apr '15

21 Apr '15

Envoyé à partir de mon Windows Phone ________________________________ De : Jason Antman<mailto:jason@jasonantman.com> Envoyé : ‎17/‎04/‎2015 06:23 À : Discussion about the virtualization on CentOS<mailto:centos-virt@centos.org> Objet : Re: [CentOS-virt] CentOS 7 AMI Building Ok, thanks so much! That'll do fine. The only other bits mentioned on http://wiki.centos.org/Cloud/AWS in "Image Builder Notes" were the random root password, SELinux enabled, and relabel at first boot, which are easy enough. Thanks so much, Jason On Fri, Apr 17, 2015 at 12:20 PM, Karanbir Singh <mail-lists(a)karan.org> wrote: > I highly recommend actually looking at the images :) > > its just a minimal install with cloud-init from extras/ added in ( for > 7, the 6 ones dont have cloud-init ). > > the installed content delivered from the minimal.iso and the ami's > should be identical in pretty much every respect. If you really want a > kickstart for it, I can build one, but just run a minimal.iso install, > add cloud-init to the %packages and bob's your uncle. > > On 16/04/15 17:48, Jason Antman wrote: > > Yes... we currently use Packer to achieve a repeatable build process, > > from scratch. We'd like to replicate that and be able to build from > > scratch without spinning up an EC2 instance, in an automated way. > > > > I don't know how to phrase this, so apologies if it comes across wrong, > > I have immense respect for you personally and for CentOS... but, is it > > really that difficult to post the kickstarts and/or build scripts > > somewhere? Or at least enough of them to replicate something similar? > > > > Thanks, > > Jason > > > > On Thu, Apr 16, 2015 at 3:56 AM, Karanbir Singh <mail-lists(a)karan.org > > <mailto:mail-lists@karan.org>> wrote: > > > > On 04/14/2015 12:48 PM, Jason Antman wrote: > > > Hello, > > > > > > I'm new to this list, but I noticed a post from March 30th > inquiring > > > about the build scripts for the official CentOS7 AMIs. I'm also > > > interested in this; I'm tasked with (unfortunately) spinning up > some VMs > > > in our corporate VMWare environment that are "as close as > possible" to > > > the official CentOS7 AMIs. I could attempt to reverse-engineer > them and > > > > do you need to do much more than qemu-img convert -O vmdk > > <centos-genericcloud.qcow2> ? > > > > > > -- > > Karanbir Singh > > +44-207-0999389 <tel:%2B44-207-0999389> | http://www.karan.org/ | > > twitter.com/kbsingh <http://twitter.com/kbsingh> > > GnuPG Key : http://www.karan.org/publickey.asc > > _______________________________________________ > > CentOS-virt mailing list > > CentOS-virt(a)centos.org <mailto:CentOS-virt@centos.org> > > http://lists.centos.org/mailman/listinfo/centos-virt > > > > > > > > > > _______________________________________________ > > CentOS-virt mailing list > > CentOS-virt(a)centos.org > > http://lists.centos.org/mailman/listinfo/centos-virt > > > > > -- > Karanbir Singh > +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh > GnuPG Key : http://www.karan.org/publickey.asc > _______________________________________________ > CentOS-virt mailing list > CentOS-virt(a)centos.org > http://lists.centos.org/mailman/listinfo/centos-virt > _______________________________________________ CentOS-virt mailing list CentOS-virt(a)centos.org http://lists.centos.org/mailman/listinfo/centos-virt

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Seeing dropped packets / tcp retrans on latest 4.4.1-10el6
by Nathan March 20 Apr '15

20 Apr '15

Hi All, Was troubleshooting some odd VM network issues and discovered that we're seeing dropped packets + retransmissions across multiple domU OS's and dom0 hardware platforms. xendev01 ~ # tshark -R "tcp.analysis.retransmission " -i vif7.0 Running as user "root" and group "root". This could be dangerous. Capturing on vif7.0 3.054257 xxx.xxx.xxx.196 -> xxx.xxx.xxx.145 SSH 110 [TCP Fast Retransmission] Encrypted response packet len=44 3.061949 xxx.xxx.xxx.196 -> xxx.xxx.xxx.145 SSH 1434 [TCP Fast Retransmission] Encrypted response packet len=1368 3.383880 xxx.xxx.xxx.196 -> xxx.xxx.xxx.145 SSH 1434 [TCP Fast Retransmission] Encrypted response packet len=1368 3.630911 xxx.xxx.xxx.196 -> xxx.xxx.xxx.145 SSH 1434 [TCP Fast Retransmission] Encrypted response packet len=1368 3.635964 xxx.xxx.xxx.196 -> xxx.xxx.xxx.145 SSH 1434 [TCP Fast Retransmission] Encrypted response packet len=1368 I've confirmed this is happening with linux, windows and pfsense (bsd) domU's. I've turned off every feature I can with ethtool on both the underlying bridge on the host, the vif's, and the eth's inside the domU's. I also see it on traffic inbetween vms on the same host. The domU sees packet errors on incoming traffic and outgoing looks fine, dumping on the dom0 indicates incoming packets are fine, but the reply from the domU is broken. This does not happen running the exact same VMs on some older xen 4.1.3 hosts. Reproduction is easy (for me at least), any burst of traffic will do it. I've just been running "ps auxf" over ssh to a vm to trigger. Since I'm seeing it on the host when I sniff the vif, this feels like a bug? - Nathan

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CBS Tag Hierarchy
by Sandro Bonazzola 20 Apr '15

20 Apr '15

Hi, please review CBS Tag Hierarchy proposed / implemented by alphacc on https://bugs.centos.org/view.php?id=8407 for aligning Virt SIG to the other SIGs. Looks ok to me. Thanks, -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com

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CentOS 7 AMI Building
by Jason Antman 17 Apr '15

17 Apr '15

Hello, I'm new to this list, but I noticed a post from March 30th inquiring about the build scripts for the official CentOS7 AMIs. I'm also interested in this; I'm tasked with (unfortunately) spinning up some VMs in our corporate VMWare environment that are "as close as possible" to the official CentOS7 AMIs. I could attempt to reverse-engineer them and figure out all of the packages and settings, but it would be much easier if we could get access to the build scripts. I've searched as much as I know how to, and while I've found some related tooling for Docker and other services (i.e. on the CentOS GitHub account), I can't seem to find anything related to the AMIs. I know I looked into this a while ago for CentOS6, and was told that the 7 stuff would be made public. Does anyone have a pointer to it, or could someone at least post the kickstart and/or other relevant information? Thanks, Jason Antman

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Re: [CentOS-virt] Xen in a Box Proposal
by Gautam Malu 16 Apr '15

16 Apr '15

Hi, Regarding my gsoc proposal (xen in a box), I have developed a set of scripts to create a custom CentOS ISO which delivers Xen 4.4 stack on CentOS 6.6 with libvirt and fully bridge network settings. I have used xen scripts for networking settings. Waiting for feedback. scripts: https://github.com/gautammaloo/centos-xen proposal: http://www.google-melange.com/gsoc/proposal/public/google/gsoc2015/gautam_m… Best regards, Gautam Malu On Sun, Apr 12, 2015 at 1:48 AM, Gautam Malu <gautam.maloo(a)gmail.com> wrote: > Hi, > I have updated my proposal, here is the link > http://www.google-melange.com/gsoc/proposal/public/google/gsoc2015/gautam_m… > > > Best regards, > Gautam Malu > > On Fri, Mar 27, 2015 at 8:30 AM, Gautam Malu <gautam.maloo(a)gmail.com> > wrote: > >> Hi, >> >> Thanks for feedback, I have updated the proposal accordingly . >> >> http://www.google-melange.com/gsoc/proposal/public/google/gsoc2015/gautam_m… >> >> >> Best regards, >> Gautam Malu >> >> On Sun, Mar 22, 2015 at 3:34 AM, Gautam Malu <gautam.maloo(a)gmail.com> >> wrote: >> >>> Hi everyone, >>> >>> I am a masters student at IIIT- Hyderabad, India. I have submitted my >>> GSOC proposal for Xen in a Box. I would be great to have some suggestions >>> especially about the porting of xapi on CentOS >>> >>> Abstract: My project goal is to deliver set of scripts preferrably in >>> bash, along with all necessay packages to convert standared installers ISOs >>> into customized ISOs which install CentOS 6 + xen + libvirt + 2 pv VMs >>> running + network configuration. I also plan to deliver xapi rpms which can >>> be used to build a custom installer ISO to install CentOS 6 + xen + xapi. >>> >>> Full proposal: >>> >>> http://www.google-melange.com/gsoc/proposal/public/google/gsoc2015/gautam_m… >>> >>> Best regards, >>> Gautam Malu >>> >> >> >

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Where does virt-manager store config in CentOS 7.1?
by C. L. Martinez 14 Apr '15

14 Apr '15

Hi all, Anyone knows where virt-manager stores user config files in CentOS 7.1?? I am not seeing anything in user's home directory .... Thanks.

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Kubernetes 0.15.0 in virt7-testing repo
by Navid Shaikh 14 Apr '15

14 Apr '15

Hi, kubernetes-0.15.0-0.1.gitd02139d.el7 build is in virt7-testing repo [1] now. Please test and feedback. [1] http://cbs.centos.org/repos/virt7-testing/x86_64/os/ -- Navid IRC: nshaikh

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Reminder: Virt SIG meeting today, 2pm GMT, on #centos-devel
by Lars Kurth 07 Apr '15

07 Apr '15

Just a reminder about the Virt SIG meeting today on IRC. Please e-mail if you have anything in particular you'd like to add to the agenda. -Lars

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CBS tags hierarchy
by Sandro Bonazzola 07 Apr '15

07 Apr '15

Hi, following Cloud SIG example[1] I would like to start defining the CBS tags hierarchy for Virt SIG. For opening the discussion I suggest: - virt${release}-common : packages not related to xen or kvm, used by at least 2 projects - virt${release}-xen : xen hypervisor related packages - virt${release}-kvm : kvm hypervisor related packages (like qemu-kvm-ev) - virt${release}-ovirt : ovirt packages and dependencies, not required by other projects - virt${release}-docker : docker packages and dependencies, not required by other projects Comments are welcome! [1] https://bugs.centos.org/view.php?id=8289 -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com

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