Public bug reported:
When updating router gateway to another external network, original csnat ports
are deleted in db, but no new ports are created.
Besides, stale devices belong to the original network remains in the snat
namespace.
How to reproduce:
- create two external network, one internal network, one distributed router
- add the internal network interface to the router, set the router's gateway to
the first external network
- set the router's gateway to another external network, csnat ports will be
deleted in db, stale devices "qg-XXX" will be found in snat namespace.
$ neutron router-port-list test -c id -c mac_address -c fixed_ips -c
device_owner
+--------------------------------------+-------------------+--------------------------------------------------------------------------------------+--------------------------------------+
| id | mac_address | fixed_ips
|
device_owner |
+--------------------------------------+-------------------+--------------------------------------------------------------------------------------+--------------------------------------+
| 233f23b2-7cda-415b-80f3-27d1a014518f | fa:16:3e:b3:8d:4b | {"subnet_id":
"c1918178-4697-4de7-9c92-ff618ae8a6ee", "ip_address": "172.16.1.252"} |
network:router_gateway |
| 91e2e5f2-30d7-4c1d-9fe8-b42bfab2b67e | fa:16:3e:3e:dc:60 | {"subnet_id":
"0537a1e9-a30c-433e-b034-023b74916821", "ip_address": "192.168.100.1"} |
network:router_interface_distributed |
+--------------------------------------+-------------------+--------------------------------------------------------------------------------------+--------------------------------------+
$ sudo ip netns exec snat-c618e83d-0ab9-48fc-8efa-a25b7b947978 ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group
default
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
42: sg-49fc22d0-cd: <BROADCAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state
UNKNOWN group default
link/ether fa:16:3e:ad:29:1d brd ff:ff:ff:ff:ff:ff
inet 192.168.100.9/24 brd 192.168.100.255 scope global sg-49fc22d0-cd
valid_lft forever preferred_lft forever
inet6 fe80::f816:3eff:fead:291d/64 scope link
valid_lft forever preferred_lft forever
46: qg-d4ce7b19-cb: <BROADCAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state
UNKNOWN group default
link/ether fa:16:3e:c2:bc:45 brd ff:ff:ff:ff:ff:ff
inet 192.168.200.8/24 brd 192.168.200.255 scope global qg-d4ce7b19-cb
valid_lft forever preferred_lft forever
inet6 fe80::f816:3eff:fec2:bc45/64 scope link
valid_lft forever preferred_lft forever
47: qg-233f23b2-7c: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UNKNOWN group default
link/ether fa:16:3e:b3:8d:4b brd ff:ff:ff:ff:ff:ff
inet 172.16.1.252/24 brd 172.16.1.255 scope global qg-233f23b2-7c
valid_lft forever preferred_lft forever
inet6 fe80::f816:3eff:feb3:8d4b/64 scope link
valid_lft forever preferred_lft forever
** Affects: neutron
Importance: Undecided
Assignee: Quan Tian (tianquan23)
Status: In Progress
** Changed in: neutron
Assignee: (unassigned) => Quan Tian (tianquan23)
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https://bugs.launchpad.net/bugs/1651813
Title:
Csnat port missing after update router gateway to another network
Status in neutron:
In Progress
Bug description:
When updating router gateway to another external network, original csnat
ports are deleted in db, but no new ports are created.
Besides, stale devices belong to the original network remains in the snat
namespace.
How to reproduce:
- create two external network, one internal network, one distributed router
- add the internal network interface to the router, set the router's gateway
to the first external network
- set the router's gateway to another external network, csnat ports will be
deleted in db, stale devices "qg-XXX" will be found in snat namespace.
$ neutron router-port-list test -c id -c mac_address -c fixed_ips -c
device_owner
+--------------------------------------+-------------------+--------------------------------------------------------------------------------------+--------------------------------------+
| id | mac_address | fixed_ips
|
device_owner |
+--------------------------------------+-------------------+--------------------------------------------------------------------------------------+--------------------------------------+
| 233f23b2-7cda-415b-80f3-27d1a014518f | fa:16:3e:b3:8d:4b | {"subnet_id":
"c1918178-4697-4de7-9c92-ff618ae8a6ee", "ip_address": "172.16.1.252"} |
network:router_gateway |
| 91e2e5f2-30d7-4c1d-9fe8-b42bfab2b67e | fa:16:3e:3e:dc:60 | {"subnet_id":
"0537a1e9-a30c-433e-b034-023b74916821", "ip_address": "192.168.100.1"} |
network:router_interface_distributed |
+--------------------------------------+-------------------+--------------------------------------------------------------------------------------+--------------------------------------+
$ sudo ip netns exec snat-c618e83d-0ab9-48fc-8efa-a25b7b947978 ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group
default
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
42: sg-49fc22d0-cd: <BROADCAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state
UNKNOWN group default
link/ether fa:16:3e:ad:29:1d brd ff:ff:ff:ff:ff:ff
inet 192.168.100.9/24 brd 192.168.100.255 scope global sg-49fc22d0-cd
valid_lft forever preferred_lft forever
inet6 fe80::f816:3eff:fead:291d/64 scope link
valid_lft forever preferred_lft forever
46: qg-d4ce7b19-cb: <BROADCAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state
UNKNOWN group default
link/ether fa:16:3e:c2:bc:45 brd ff:ff:ff:ff:ff:ff
inet 192.168.200.8/24 brd 192.168.200.255 scope global qg-d4ce7b19-cb
valid_lft forever preferred_lft forever
inet6 fe80::f816:3eff:fec2:bc45/64 scope link
valid_lft forever preferred_lft forever
47: qg-233f23b2-7c: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UNKNOWN group default
link/ether fa:16:3e:b3:8d:4b brd ff:ff:ff:ff:ff:ff
inet 172.16.1.252/24 brd 172.16.1.255 scope global qg-233f23b2-7c
valid_lft forever preferred_lft forever
inet6 fe80::f816:3eff:feb3:8d4b/64 scope link
valid_lft forever preferred_lft forever
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