<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Sep 30, 2015 at 7:25 PM, Sam Morrison <span dir="ltr"><<a href="mailto:sorrison@gmail.com" target="_blank">sorrison@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><span class=""><br><div><blockquote type="cite"><div>On 30 Sep 2015, at 3:48 pm, John Dewey <<a href="mailto:john@dewey.ws" target="_blank">john@dewey.ws</a>> wrote:</div><br><div><span style="font-family:Helvetica,Arial;font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">Why not run neutron dhcp agents on both nodes? </span></div></blockquote><br></div></span><div>Yeah have tried this too.</div><br><div>We don’t do this due to metadata, DHCP adds a static route to the metadata agent (which is the same as the network node running DHCP). If the network node is down the instances loose metadata if they happened to get a lease from that DHCP server. With failover the IP address transfers to the other network node and metadata keeps working for all.</div></div></blockquote><div><br></div><div>That's interesting. Looks like DHCP A/A only works if you use your (HA) routers to provide metadata, then.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div><br></div><div>Make sense?</div><span class="HOEnZb"><font color="#888888"><div><br></div><div>Sam</div><div><br></div><div><br></div></font></span></div><br>_______________________________________________<br>
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