Hi,
Thank you very much for help. I have one more question. How to connect *ILO Power Management ports *between *2 hypersvisors? * Let's assume, 192.168.1.1/24 is the ip address of hypersvisor1 node. 192.168.1.2/24 is the ip address given to ILO port of hypersvisor1 node. 192.168.1.3/24 is the ip address of hypersvisor2 node. 192.168.1.4/24 is the ip address given to ILO port of hypersvisor2 node. then, Can We connect ILO ports of these 2 hypersvisors *to the same switch* where Ethernet ports of these 2 hypersvisors are connected? or can we connect ILO ports of these 2 hypersvisors with a *CROSS cable* while Ethernet ports of these 2 hypersvisors are connected *to a switch? * If you can answer, I will be able to complete this question? Hope to hear from you. On Wed, Oct 14, 2015 at 3:21 PM, Eli Mesika <emes...@redhat.com> wrote: > > > ----- Original Message ----- > > From: "Indunil Jayasooriya" <induni...@gmail.com> > > To: "Eli Mesika" <emes...@redhat.com> > > Cc: users@ovirt.org > > Sent: Tuesday, October 13, 2015 6:25:59 PM > > Subject: Re: [ovirt-users] oVirt - High Availability > > > > Hi, > > > > Thank you very much for your reply. > > > > I would like to know in which cases HA will happen? > > > > 1. network failure? ( i.e , if we accidentally remove the network cable > or > > if network card stopped working due to some reasons. ) > > > > 2. Server is suddenly shut-down due to power failure (i.e - NOT a proper > > shut-down ) or due to server Hardware failure such as motherboard or > > processor. > > > > 3. accidental reboot ? > > Basically yes for all 3 > in case of 1) > There is a grace period that depends on the host load we give the host to > get UP again and if that grace period passes then host is rebooted and HA > VMs are atetmpted to run on a different host > > > > > > > WILL HA will happen when above mentioned things happen? > > > > > > YES or NO? > > > > Hope to hear from you? > > > > > > On Tue, Oct 13, 2015 at 7:33 PM, Eli Mesika <emes...@redhat.com> wrote: > > > > > > > > > > > ----- Original Message ----- > > > > From: "Indunil Jayasooriya" <induni...@gmail.com> > > > > To: users@ovirt.org > > > > Sent: Tuesday, October 13, 2015 6:13:22 AM > > > > Subject: [ovirt-users] oVirt - High Availability > > > > > > > > Hi users, > > > > > > > > > > > > I have setup OVIRT 3.5 with 2 REDHAT 7.1 hosts. Everything is ok > other > > > than > > > > HA ( High Availability). To test HA, Documentation says, Power > > > Management is > > > > needed. > > > > > > > > Could you pls let me know if this Power Management is a separate > Device > > > or > > > > does it come with a BRANDED Server such as HP, IBM or Dell? > > > > > > PM can be implemented by a separate card or come as part of a BRANDED > > > Server such as HP, IBM or Dell. > > > > > > > > > > > I have seen a ILO port in HP servers. Can I use it for HA ( High > > > > Availability) in ovirt? > > > > > > Yes you can, ILO is one of the PM devices supported by oVirt > > > > > > > > > > > If power management is present in Branded Servers , Could you pls > let me > > > know > > > > some Branded RHEL 7.1/CentOS 7.1 supported servers? > > > > > > > > Then, I can use it for Production use. > > > > > > > > > > > > This is an YOU TUBE video for HA. > > > > > > > > https://www.youtube.com/watch?v=uHCnXGUMaS0 > > > > > > > > Is this a correct video for HA? > > > > > > Please see also https://www.youtube.com/watch?v=IuRPGU7nF1E > > > > > > > > > > > > > > > I did some research. > > > > > > > > a few URLs. > > > > > > > > > > > > http://lists.ovirt.org/pipermail/users/2013-January/011519.html > > > > > > > > http://www.ovirt.org/OVirt_Administration_Guide#Host_Resilience > > > > > > > > > > > > https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.5/html/Administration_Guide/sect-Improving_Uptime_with_Virtual_Machine_High_Availability.html > > > > > > > > > > > > what is Soft-Fencing Hosts ? ovirt doc gives below . ( > > > > http://www.ovirt.org/OVirt_Administration_Guide#Host_Resilience ) > > > > > > > > Soft-Fencing Hosts > > > > > > > > > > > > Sometimes a host becomes non-responsive due to an unexpected > problem, and > > > > though VDSM is unable to respond to requests, the virtual machines > that > > > > depend upon VDSM remain alive and accessible. In these situations, > > > > restarting VDSM returns VDSM to a responsive state and resolves this > > > issue. > > > > > > > > oVirt 3.3 introduces "soft-fencing over SSH". Prior to oVirt 3.3, > > > > non-responsive hosts were fenced only by external fencing devices. In > > > oVirt > > > > 3.3, the fencing process has been expanded to include "SSH Soft > > > Fencing", a > > > > process whereby oVirt attempts to restart VDSM via SSH on > non-responsive > > > > hosts. If oVirt fails to restart VDSM via SSH, the responsibility for > > > > fencing falls to the external fencing agent if an external fencing > agent > > > has > > > > been configured. > > > > > > > > > > > > BUT, It does NOT say how to set it up? > > > > > > > > > > > > is there any step by step doc for it? > > > > > > There is no need to set it up, soft-fencing is simply VDSM service > restart > > > on the server side and is done always whether you configured PM on the > host > > > or not as a first step when you host is not-responding > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > HOPE TO hear from you? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > cat /etc/motd > > > > > > > > Thank you > > > > Indunil Jayasooriya > > > > http://www.theravadanet.net/ > > > > http://www.siyabas.lk/sinhala_how_to_install.html - Download Sinhala > > > Fonts > > > > > > > > > > > > _______________________________________________ > > > > Users mailing list > > > > Users@ovirt.org > > > > http://lists.ovirt.org/mailman/listinfo/users > > > > > > > > > > > > > > > -- > > cat /etc/motd > > > > Thank you > > Indunil Jayasooriya > > http://www.theravadanet.net/ > > http://www.siyabas.lk/sinhala_how_to_install.html - Download Sinhala > > Fonts > > > -- cat /etc/motd Thank you Indunil Jayasooriya http://www.theravadanet.net/ http://www.siyabas.lk/sinhala_how_to_install.html - Download Sinhala Fonts
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