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<p class="MsoNormal">I am new to openstack. I followed the initial openstack guild “OpenStack Installation Guide for Red Hat Enterprise Linux and CentOS” with options 1 network. Everything else work well but failed in networking site. My vm instance cannot
get ip address from DHCP. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">After further troubleshooting, I found that could be issues in DHCP Namespace. I cannot ping from DHCP namespace to my gateway and compute node. DHCP is located in control node. Looks like DHCP namespace cannot get tap interface (<b><u><span style="font-size:16.0pt;color:red">tap2044baac-9c@if2</span></u></b>)
from control node and instead of creating itself (<b><u><span style="font-size:14.0pt;color:red">ns-2044baac-9c@if5)</span></u></b>. My other team member also have the same issues as me in his test environment. Any recommendation will be much appreciated.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">[root@control1 ~]# ip addr<o:p></o:p></p>
<p class="MsoNormal">….<o:p></o:p></p>
<p class="MsoNormal">3: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master brq469ef97c-8c state UP qlen 1000<o:p></o:p></p>
<p class="MsoNormal"> link/ether 00:50:56:93:06:f5 brd ff:ff:ff:ff:ff:ff<o:p></o:p></p>
<p class="MsoNormal"> inet6 fe80::250:56ff:fe93:6f5/64 scope link<o:p></o:p></p>
<p class="MsoNormal"> valid_lft forever preferred_lft forever<o:p></o:p></p>
<p class="MsoNormal">5:<span style="color:red"> </span><b><u><span style="font-size:16.0pt;color:red">tap2044baac-9c@if2:</span></u></b><span style="color:red"> <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master brq469ef97c-8c state UP qlen
1000<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:red"> link/ether 62:73:3f:a8:d5:fd brd ff:ff:ff:ff:ff:ff link-netnsid 0<o:p></o:p></span></p>
<p class="MsoNormal">6: brq469ef97c-8c: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP<o:p></o:p></p>
<p class="MsoNormal"> link/ether 00:50:56:93:06:f5 brd ff:ff:ff:ff:ff:ff<o:p></o:p></p>
<p class="MsoNormal"> inet 192.168.1.13/24 brd 192.168.1.255 scope global brq469ef97c-8c<o:p></o:p></p>
<p class="MsoNormal"> valid_lft forever preferred_lft forever <o:p></o:p></p>
<p class="MsoNormal">…<o:p></o:p></p>
<p class="MsoNormal">[root@control1 ~]# ip netns exec qdhcp-469ef97c-8ccb-4b06-9faa-85b3b8a5fbbc ip a<o:p></o:p></p>
<p class="MsoNormal">1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN<o:p></o:p></p>
<p class="MsoNormal"> link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00<o:p></o:p></p>
<p class="MsoNormal"> inet 127.0.0.1/8 scope host lo<o:p></o:p></p>
<p class="MsoNormal"> valid_lft forever preferred_lft forever<o:p></o:p></p>
<p class="MsoNormal"> inet6 ::1/128 scope host<o:p></o:p></p>
<p class="MsoNormal"> valid_lft forever preferred_lft forever<o:p></o:p></p>
<p class="MsoNormal">2:<b><u><span style="font-size:14.0pt;color:red"> ns-2044baac-9c@if5:</span></u></b> <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000<o:p></o:p></p>
<p class="MsoNormal"> link/ether fa:16:3e:67:4f:45 brd ff:ff:ff:ff:ff:ff link-netnsid 0<o:p></o:p></p>
<p class="MsoNormal"> inet 192.168.1.16/24 brd 192.168.1.255 scope global ns-2044baac-9c<o:p></o:p></p>
<p class="MsoNormal"> valid_lft forever preferred_lft forever<o:p></o:p></p>
<p class="MsoNormal"> inet 169.254.169.254/16 brd 169.254.255.255 scope global ns-2044baac-9c<o:p></o:p></p>
<p class="MsoNormal"> valid_lft forever preferred_lft forever<o:p></o:p></p>
<p class="MsoNormal"> inet6 fe80::f816:3eff:fe67:4f45/64 scope link<o:p></o:p></p>
<p class="MsoNormal"> valid_lft forever preferred_lft forever <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Albert<o:p></o:p></p>
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