----- Original Message -----
From: "Indunil Jayasooriya" <indunil75(a)gmail.com>
To: users(a)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_Virtuali...
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
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