lets take a failed router root@ctrl1:~# neutron l3-agent-list-hosting-router 6e84cf52-ef66-455c-b89c-d9725057e131 neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead. +--------------------------------------+-------+----------------+-------+----------+ | id | host | admin_state_up | alive | ha_state | +--------------------------------------+-------+----------------+-------+----------+ | 7f3fc3e4-be9a-479b-9571-88a96c13c966 | ctrl3 | True | :-) | standby | | a0f5ccd4-e811-438d-be63-7bc4db1193d9 | ctrl2 | True | :-) | standby | | cc7b7efe-6fb2-4add-8629-5470beaf8d43 | ctrl1 | True | :-) | standby | +--------------------------------------+-------+----------------+-------+----------+ on ctrl1 root@ctrl1:~# ip netns exec qrouter-6e84cf52-ef66-455c-b89c-d9725057e131 ip a 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: ha-7b94f8d7-e7@if2158: mtu 8950 qdisc noqueue state UP group default qlen 1000 link/ether fa:16:3e:34:4e:3d brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet 169.254.194.27/18 brd 169.254.255.255 scope global ha-7b94f8d7-e7 valid_lft forever preferred_lft forever inet6 fe80::f816:3eff:fe34:4e3d/64 scope link valid_lft forever preferred_lft forever 3: qg-60ecaa0d-46@if2159: mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether fa:16:3e:f3:a6:b0 brd ff:ff:ff:ff:ff:ff link-netnsid 0 4: qr-3e967e78-45@if2160: mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether fa:16:3e:92:52:bb brd ff:ff:ff:ff:ff:ff link-netnsid 0 on ctrl2 root@ctrl2:~# ip netns exec qrouter-6e84cf52-ef66-455c-b89c-d9725057e131 ip a 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: ha-ef796792-c1@if1786: mtu 8950 qdisc noqueue state UP group default qlen 1000 link/ether fa:16:3e:7f:49:a3 brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet 169.254.192.242/18 brd 169.254.255.255 scope global ha-ef796792-c1 valid_lft forever preferred_lft forever inet6 fe80::f816:3eff:fe7f:49a3/64 scope link valid_lft forever preferred_lft forever 3: qr-3e967e78-45@if1787: mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether fa:16:3e:92:52:bb brd ff:ff:ff:ff:ff:ff link-netnsid 0 4: qg-60ecaa0d-46@if1788: mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether fa:16:3e:f3:a6:b0 brd ff:ff:ff:ff:ff:ff link-netnsid 0 on ctrl3 root@ctrl3:~# ip netns exec qrouter-6e84cf52-ef66-455c-b89c-d9725057e131 ip a 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: ha-a3d7197d-2e@if1836: mtu 8950 qdisc noqueue state UP group default qlen 1000 link/ether fa:16:3e:f2:91:00 brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet 169.254.194.18/18 brd 169.254.255.255 scope global ha-a3d7197d-2e valid_lft forever preferred_lft forever inet6 fe80::f816:3eff:fef2:9100/64 scope link valid_lft forever preferred_lft forever 3: qg-60ecaa0d-46@if1839: mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether fa:16:3e:f3:a6:b0 brd ff:ff:ff:ff:ff:ff link-netnsid 0 4: qr-3e967e78-45@if1841: mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether fa:16:3e:92:52:bb brd ff:ff:ff:ff:ff:ff link-netnsid 0 Pinging from router namespace in ctrl3 to ctrl1 and ctrl2 root@ctrl3:~# ip netns exec qrouter-6e84cf52-ef66-455c-b89c-d9725057e131 ping 169.254.192.242 PING 169.254.192.242 (169.254.192.242) 56(84) bytes of data. 64 bytes from 169.254.192.242: icmp_seq=1 ttl=64 time=0.885 ms 64 bytes from 169.254.192.242: icmp_seq=2 ttl=64 time=0.461 ms ^C --- 169.254.192.242 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1007ms rtt min/avg/max/mdev = 0.461/0.673/0.885/0.212 ms root@ctrl3:~# ip netns exec qrouter-6e84cf52-ef66-455c-b89c-d9725057e131 ping 169.254.194.27 PING 169.254.194.27 (169.254.194.27) 56(84) bytes of data. 64 bytes from 169.254.194.27: icmp_seq=1 ttl=64 time=1.06 ms 64 bytes from 169.254.194.27: icmp_seq=2 ttl=64 time=0.531 ms 64 bytes from 169.254.194.27: icmp_seq=3 ttl=64 time=0.446 ms ^C --- 169.254.194.27 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2013ms rtt min/avg/max/mdev = 0.446/0.681/1.066/0.274 ms