Hai, I think , I am not effected by this bug. As we have around 220 vm max. But as suggested in bug, do I need to set this on all nodes. (1. controller 2. Network and 3. Compute) or just network node? As br-ex bridge is been used , I am supposed to use only br-ex while setting.
ovs-vsctl set bridge <bridge> other-config:mac-table-size=50000 Regarding the MTU link suggested by Slawomir Kaplonski in IRC discussion, we are using 1500 MTU consistently in all those locations. PS: I am not expert in openstack system, just started working on existing system ~ Jayachander. On Mon, Jun 18, 2018 at 1:28 PM, Slawomir Kaplonski <skapl...@redhat.com> wrote: > Hi, > > > Wiadomość napisana przez Jay See <jayachander...@gmail.com> w dniu > 18.06.2018, o godz. 12:48: > > > > > > 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 > > When You removed and added again br-ex it has no any openflow rules > configured. So there will be no traffic passed via this bridge at all > please try to restart neutron-openvswitch-agent and check if rules are > recreated. > If that will help, You can apply patch https://review.openstack.org/# > /c/573696/ and check if that will help :) > > > 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. > > _______________________________________________ > > Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/ > openstack > > Post to : openstack@lists.openstack.org > > Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/ > openstack > > — > Slawek Kaplonski > Senior software engineer > Red Hat > > -- P *SAVE PAPER – Please do not print this e-mail unless absolutely necessary.*
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