11:16 a.m.
Hello Charles,
First, can you give us more information regarding the duplicated IPv6
addresses? Since you are going to reinstall the hosted engine, could you
make sure that NetworkManager is disabled before adding the second vNIC
(and perhaps even disable IPv6 and reboot as well, so we have a solid base
and see what makes the difference)?
What kind of documentation did you follow to install the hosted engine? Was
it this page? https://www.ovirt.org/documentation/how-to/hosted-engine/ If
so, could you file a bug against VDSM networking and attach
/var/log/vdsm/vdsm.log and supervdsm.log, and make sure they include the
time period from adding the second vNIC to rebooting?
Second, even the vNIC going missing after reboot looks like a bug to me.
Even though eth1 does not exist in the VM, can you see it defined for the
VM in the engine web GUI?
The steps you took to install the hosted engine with regards to networking
look good to me, but I believe Sandro (CC'ed) would be able to give more
advice.
Sandro, since we want to configure bonding, would you recommend to install
the engine physically first, move it to a VM, according to the following
method, and only then reconfigure networking?
https://www.ovirt.org/documentation/self-hosted/chap-Migrating_from_Bare_...
Thank you,
Ondra
On Mon, Apr 10, 2017 at 8:51 AM, Charles Tassell <ctassell(a)gmail.com> wrote:
Hi Everyone,
Okay, I'm again having problems with getting basic networking setup with
oVirt 4.1 Here is my situation. I have two servers I want to use to
create an oVirt cluster, with two different networks. My "public" network
is a 1G link on device em1 connected to my Internet feed, and my "storage"
network is a 10G link connected on device p5p1 to my file server. Since I
need to connect to my storage network in order to do the install, I
selected p5p1 has the ovirtmgmt interface when installing the hosted
engine. That worked fine, I got everything installed, so I used some
ssh-proxy magic to connect to the web console and completed the install
(setup a Storage domain and create a new network vmNet for VM networking
and added em1 to it.)
The problem was that when I added a second network device to the
HostedEngine VM (so that I can connect to it from my public network) it
would intermittently go down. I did some digging and found some IPV6
errors in the dmesg (IPv6: eth1: IPv6 duplicate address
2001:410:e000:902:21a:4aff:fe16:151 detected!) so I disabled IPv6 on both
eth0 and eth1 in the HostedEngine and rebooted it. The problem is that
when I restarted the VM, the eth1 device was missing.
So, my question is: Can I add a second NIC to the HostedEngine VM and
make it stick, or will it be deleted whenever the engine VM is restarted?
Is there a better way to do what I'm trying to do, ie, should I setup
ovirtmgmt on the public em1 interface, and then create the "storage"
network after the fact for connecting to the datastores and such. Is that
even possible, or required? I was thinking that it would be better for
migrations and other management functions to happen on the faster 10G
network, but if the HostedEngine doesn't need to be able to connect to the
storage network maybe it's not worth the effort?
Eventually I want to setup LACP on the storage network, but I had to
wipe the servers and reinstall from scratch the last time I tried to set
that up. I was thinking that it was because I setup the bonding before
installing oVirt, so I didn't do that this time.
Here are my /etc/sysconfig/network-scripts/ifcfg-* files in case I did
something wrong there (I'm more familiar with Debian/Ubuntu network setup
than CentOS)
ifcfg-eth0: (ovirtmgmt aka storage)
----------------
BROADCAST=192.168.130.255
NETMASK=255.255.255.0
BOOTPROTO=static
DEVICE=eth0
IPADDR=192.168.130.179
ONBOOT=yes
DOMAIN=public.net
ZONE=public
IPV6INIT=no
ifcfg-eth1: (vmNet aka Internet)
----------------
BROADCAST=192.168.1.255
NETMASK=255.255.255.0
BOOTPROTO=static
DEVICE=eth1
IPADDR=192.168.1.179
GATEWAY=192.168.1.254
ONBOOT=yes
DNS1=192.168.1.1
DNS2=192.168.1.2
DOMAIN=public.net
ZONE=public
IPV6INIT=no
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