I have created question on ask.opestack, but profile is still not approved by moderators. (https://ask.openstack.org/en/question/114803/network-is- unreachable-in-instance/) Someone in IRC suggested to send the mail here.
Problem seems to be similar to, but I am not able to follow the bug to fix the issue - https://ask.openstack.org/en/question/80462/network-is- unreachable-in-instance/ We have 3 controller nodes connected to 12 compute nodes. Eth3 port on all the compute node is down. [Thu Jun 14 14:38:57] root@:~# node-ping-check Ping check of all service-ip, vm-ip, data-ip and floating-ip, ping status result after ip, 1/0 = alive/dead command start time 2018-06-14 14:39:00 node service-ip vm-ip data-ip floating-ip --------------------------------------------------------------------- h002 10.1.12.102 1 10.2.12.102 1 10.3.13.102 1 10.4.13.102 1 (controller 1) h003 10.1.12.103 1 10.2.12.103 1 10.3.13.103 1 10.4.13.103 1 (controller 2) h004 10.1.12.104 1 10.2.12.104 1 10.3.13.104 1 10.4.13.104 1 (controller 3 + Network node) h005 10.1.12.105 1 10.2.12.105 1 10.3.13.105 1 10.4.13.105 0 h006 10.1.12.106 1 10.2.12.106 1 10.3.13.106 1 10.4.13.106 0 h007 10.1.12.107 1 10.2.12.107 1 10.3.13.107 1 10.4.13.107 0 h008 10.1.12.108 1 10.2.12.108 1 10.3.13.108 1 10.4.13.108 0 h009 10.1.12.109 1 10.2.12.109 1 10.3.13.109 1 10.4.13.109 0 h010 10.1.12.110 1 10.2.12.110 1 10.3.13.110 1 10.4.13.110 0 h011 10.1.14.111 1 10.2.14.111 1 10.3.15.111 1 10.4.15.111 0 h012 10.1.14.112 1 10.2.14.112 1 10.3.15.112 1 10.4.15.112 0 h013 10.1.14.113 1 10.2.14.113 1 10.3.15.113 1 10.4.15.113 0 h014 10.1.14.114 1 10.2.14.114 1 10.3.15.114 1 10.4.15.114 0 h015 10.1.14.115 1 10.2.14.115 1 10.3.15.115 1 10.4.15.115 0 h016 10.1.14.116 0 10.2.14.116 0 10.3.15.116 0 10.4.15.116 0 ( Down because of hardware issue) h017 10.1.14.117 1 10.2.14.117 1 10.3.15.117 1 10.4.15.117 0 [Thu Jun 14 14:39:39] root@:~# To bring eth3 on Network node followed following steps: ifconfig eth3 down ifconfig eth3 0.0.0.0 up ovs-vsctl del-br br-ex ovs-vsctl add-br br-ex ovs-vsctl add-port br-ex eth3 ifconfig br-ex 10.4.13.104 netmask 255.255.255.0 route add -net 10.4.0.0 netmask 255.255.0.0 gateway 10.4.13.1 dev br-ex On Network node: [2018-06-18 11:38:24] root@h004:~$ ip netns exec qdhcp-eb7573a0-9d91-491c-b150-90f0135778ad ping 12.12.0.4 PING 12.12.0.4 (12.12.0.4) 56(84) bytes of data. 64 bytes from 12.12.0.4: icmp_seq=1 ttl=64 time=1.98 ms 64 bytes from 12.12.0.4: icmp_seq=2 ttl=64 time=0.529 ms ^C --- 12.12.0.4 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 0.529/1.254/1.980/0.726 ms [2018-06-18 11:38:33] root@h004:~$ ip netns exec qdhcp-eb7573a0-9d91-491c-b150-90f0135778ad ssh cirros@12.12.0.4 ^C [SSH Not working] [2018-06-18 11:45:51] root@h004:~$ ip netns exec qrouter-d770b552-1979-4063-ae79-c6ff402c8cbc traceroute 8.8.8.8 traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets connect: Network is unreachable [2018-06-18 11:58:01] root@h004:~$ ip netns exec qrouter-d770b552-1979-4063-ae79-c6ff402c8cbc traceroute 12.12.0.4 traceroute to 12.12.0.4 (12.12.0.4), 30 hops max, 60 byte packets On Compute node: [2018-06-18 11:56:12] root@h011:~$ ip netns exec qrouter-d770b552-1979-4063-ae79-c6ff402c8cbc traceroute 8.8.8.8 traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets connect: Network is unreachable [2018-06-18 11:59:20] root@h011:~$ ip netns exec qrouter-d770b552-1979-4063-ae79-c6ff402c8cbc ping 12.12.0.4 PING 12.12.0.4 (12.12.0.4) 56(84) bytes of data. 64 bytes from 12.12.0.4: icmp_seq=1 ttl=64 time=1.61 ms 64 bytes from 12.12.0.4: icmp_seq=2 ttl=64 time=0.273 ms ^C --- 12.12.0.4 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 0.273/0.943/1.614/0.671 ms [2018-06-18 12:02:21] root@h011:~$ ip netns exec qrouter-d770b552-1979-4063-ae79-c6ff402c8cbc ping x.x.170.61 (floating ip) connect: Network is unreachable -- P *SAVE PAPER – Please do not print this e-mail unless absolutely necessary.*
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