<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Nov 12, 2013, at 7:58 AM, Assaf Muller wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">Can users outside of the hosts' networks reach the VMs in the hosts?<br></span></blockquote>I have not tested this yet. I have been focused on the host's networking behavior outside of the ovirt/vdsm bits.</div><div>(Mainly, it checking in on other things.) I realize this presents a flaw in my thinking that the host was not behaving</div><div>properly. I will adjust my thinking on this item, and then test with a valid set of criteria.</div><div><br><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">If you use netstat -rn it is expected that the gateway will be 0.0.0.0, as ifcfg-ovirtmgmt has DEFROUTE=yes and ifcfg-public has DEFROUTE=no, then ovirtmgmt's<br>'gateway' (0.0.0.0) will be determined as the host's default gateway. However with the new multiple gateways feature we configure source routing to make<br>sure that traffic that comes (from the outside) in the public network's device will return the way it came in.<br></span></blockquote><div>That makes a lot of sense to me now. And, actually, I believe is the way it is working, the more I think about the behavior I'm seeing.</div><div><br></div><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">You can use 'ip rule' to see the rules VDSM configures. It creates two rules and a routing table per device. You can use 'ip route show table %s' on each<br>table, where the IDs can be obtained by 'ip rule'.</span></blockquote>This is super helpful. Thank you.</div><div><br></div><div>A large part of this is likely me needing to adjust my thinking. As long as my VM's are behaving as expected, do I actually need the host</div><div>to, by default, send traffic out the 'public' interface? If I do, what traffic is that? Can I change that traffic? The likely hood is that there are</div><div>only a small amount of data, mostly centering around metrics, and some config management, that would be host sourced data that currently</div><div>isn't destined for my management network. Maybe those data *should* run over the management network, if my desire for an extra layer</div><div>of protection of those data is a valid desire.</div><div><br></div><div>Of course, that's not the way I have things arranged right now, but, maybe I can fix that.</div><div><br></div><div>Thank you very much for your help, I have enough information to get back on the problem now.</div><div><br></div><div>--Chris</div><div><br></div><br></body></html>