<tt><font size=2>Gustavo Randich <gustavo.randich@gmail.com> wrote
on 06/29/2016 03:17:54 PM:<br><br>> Hi operators...</font></tt><br><tt><font size=2>> <br>> Transitioning from nova-network to Neutron (Mitaka), one of the key
<br>> issues we are facing is how to reach VMs in VXLAN tenant networks
<br>> without using precious floating IPs.</font></tt><br><tt><font size=2>> <br>> Things that are outside Neutron in our case are:</font></tt><br><tt><font size=2>> <br>> - in-house made application orchestrator: needs SSH access to <br>> instances to perform various tasks (start / shutdown apps, configure<br>> filesystems, etc.)</font></tt><br><tt><font size=2>> <br>> - various centralized and external monitoring/metrics pollers: need
<br>> SNMP / SSH access to gather status and trends</font></tt><br><tt><font size=2>> <br>> - internal customers: need SSH access to instance from non-openstack<br>> VPN service</font></tt><br><tt><font size=2>> <br>> - ideally, non-VXLAN aware traffic balancer appliances</font></tt><br><tt><font size=2>> <br>> We have considered these approaches:</font></tt><br><tt><font size=2>> <br>> - putting some of the external components inside a Network Node: <br>> inviable because components need access to multiple Neutron deployments</font></tt><br><tt><font size=2>> <br>> - Neutron's VPNaaS: cannot figure how to configure a client-to-site
<br>> VPN topology</font></tt><br><tt><font size=2>> <br>> - integrate hardware switches capable of VXLAN VTEP: for us in this
<br>> stage, it is complex and expensive</font></tt><br><tt><font size=2>> <br>> - other?</font></tt><br><br><tt><font size=2>You know Neutron includes routers that can route between
tenant networks and external networks, right? You could use those,
if your tenant networks use disjoint IP subnets.</font></tt><br><br><tt><font size=2>Regards,</font></tt><br><tt><font size=2>Mike</font></tt><br><br><BR>