[Rdo-list] Troubleshooting Tripleo Overcloud deployment

Wed May 4 18:26:03 UTC 2016

On 05/04/2016 10:59 AM, Ignacio Bravo wrote:
> After installing the undercloud based on mitaka, the deploy of the
> overcloud in baremetal servers is not working. When the servers are
> trying to PXE boot, they don’t get any responses back. I’ve used
> tcpdump on several parts of the undercloud to see what was going on
> when the baremetal servers were PXE booting and this is what I obtained:
> 
> ------------------- 
> [stack at undercloud ~]$ sudo ovs-dpctl show
> system at ovs-system:
> lookups: hit:7971 missed:512 lost:0
> flows: 2
> masks: hit:14405 total:2 hit/pkt:1.70
> port 0: ovs-system (internal)
> port 1: br-int (internal)
> port 2: br-ctlplane (internal)
> port 3: eth1
> port 4: tap77898498-bf (internal)
> 
> [stack at undercloud ~]$ sudo tcpdump -i eth1
> tcpdump: WARNING: eth1: no IPv4 address assigned
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
> listening on eth1, link-type EN10MB (Ethernet), capture size 65535 bytes
> 13:43:30.962477 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
> Request from b4:b5:2f:58:61:a8 (oui Unknown), length 548
> 13:43:33.269272 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
> Request from b4:b5:2f:58:61:a8 (oui Unknown), length 548
> 13:43:37.553341 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
> Request from b4:b5:2f:58:61:a8 (oui Unknown), length 548
> 13:43:45.847061 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
> Request from b4:b5:2f:58:61:a8 (oui Unknown), length 548
> 
> 
> [stack at undercloud ~]$ sudo tcpdump -i br-ctlplane
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
> listening on br-ctlplane, link-type EN10MB (Ethernet), capture size
> 65535 bytes
> 13:43:30.962758 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
> Request from b4:b5:2f:58:61:a8 (oui Unknown), length 548
> 13:43:33.269272 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
> Request from b4:b5:2f:58:61:a8 (oui Unknown), length 548
> 13:43:37.553341 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
> Request from b4:b5:2f:58:61:a8 (oui Unknown), length 548
> 13:43:45.847061 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
> Request from b4:b5:2f:58:61:a8 (oui Unknown), length 548
> 
> [stack at undercloud ~]$ sudo ip netns exec
> qdhcp-a98f8425-c458-4db4-befe-807055f7a8e8 tcpdump -i tap77898498-bf
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
> listening on tap77898498-bf, link-type EN10MB (Ethernet), capture size
> 65535 bytes
> 13:43:30.962761 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
> Request from b4:b5:2f:58:61:a8 (oui Unknown), length 548
> 13:43:33.269272 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
> Request from b4:b5:2f:58:61:a8 (oui Unknown), length 548
> 13:43:37.553341 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
> Request from b4:b5:2f:58:61:a8 (oui Unknown), length 548
> 13:43:45.847061 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP,
> Request from b4:b5:2f:58:61:a8 (oui Unknown), length 548
> 
> ------------------- 
> 
> 
> I deployed the undercloud using the default network configuration
> (192.0.2.x) and I can see that dnsmasq is running:
> 
> [stack at undercloud ~]$ ps aux | grep dnsmasq
> nobody    1452  0.0  0.0  15524   396 ?        S    May02   0:00
> /sbin/dnsmasq --conf-file=/etc/ironic-inspector/dnsmasq.conf
> stack     3409  0.0  0.0 112648   964 pts/2    S+   13:58   0:00 grep
> --color=auto dnsmasq
> nobody    4015  0.0  0.0  15552   956 ?        S 
>   May02   0:00 dnsmasq --no-hosts --no-resolv --strict-order
> --except-interface=lo
> --pid-file=/var/lib/neutron/dhcp/a98f8425-c458-4db4-befe-807055f7a8e8/pid
> --dhcp-hostsfile=/var/lib/neutron/dhcp/a98f8425-c458-4db4-befe-807055f7a8e8/host
> --addn-hosts=/var/lib/neutron/dhcp/a98f8425-c458-4db4-befe-807055f7a8e8/addn_hosts
> --dhcp-optsfile=/var/lib/neutron/dhcp/a98f8425-c458-4db4-befe-807055f7a8e8/opts
> --dhcp-leasefile=/var/lib/neutron/dhcp/a98f8425-c458-4db4-befe-807055f7a8e8/leases
> --dhcp-match=set:ipxe,175 --bind-interfaces --interface=tap77898498-bf
> --dhcp-range=set:tag0,192.0.2.0,static,86400s
> --dhcp-option-force=option:mtu,1500 --dhcp-lease-max=256
> --conf-file=/etc/dnsmasq-ironic.conf
> 
> 
> Ideas?
> 
> 
> __
> Ignacio Bravo
> LTG Federal, Inc
> www.ltgfederal.com <http://www.ltgfederal.com>
> 
> 
> 
> _______________________________________________
> Rdo-list mailing list
> Rdo-list at redhat.com
> https://www.redhat.com/mailman/listinfo/rdo-list
> 
> To unsubscribe: rdo-list-unsubscribe at redhat.com
> 

I'm not sure what would be causing this behavior.

Are you sure that introspection completed successfully? Are you getting
any logs from dnsmasq?

-- 
Dan Sneddon         |  Principal OpenStack Engineer
dsneddon at redhat.com |  redhat.com/openstack
650.254.4025        |  dsneddon:irc   @dxs:twitter