[Bug 1759918] Re: [dvr] ip policy rules for tenant networks do not get deleted in qrouter namespaces after a router port is removed from a tenant network
Dmitrii Shcherbakov
1759918 at bugs.launchpad.net
Thu Mar 29 18:17:09 UTC 2018
On a disabled router:
https://paste.ubuntu.com/p/8kpcq8hfbp/
Consecutive attempts to remove a subnet result in the following on the
neutron API side:
https://paste.ubuntu.com/p/bxVHgmbgr9/
remove_router_interface failed (client error): There was a conflict when trying to complete your request.
** Summary changed:
- [dvr] ip policy rules for tenant networks do not get deleted in qrouter namespaces after a router port is removed from a tenant network
+ [dvr] router remove subnet <router> <subnet> silently fails
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https://bugs.launchpad.net/bugs/1759918
Title:
[dvr] router remove subnet <router> <subnet> silently fails
Status in neutron package in Ubuntu:
New
Bug description:
Scenario: Queens, DVR without L3 HA, distributed non-HA virtual router
(pubrouter), all subnets are attached to 2 different subnet pools, all
of them have one global address scope so DVR "fast exit" is triggered
(https://review.openstack.org/#/c/474007/), floating ips are not used,
snat is not enabled.
Commands:
openstack address scope create dev
openstack subnet pool create --address-scope dev --pool-prefix 10.232.40.0/21 --pool-prefix 10.232.16.0/21 dev
openstack subnet pool create --address-scope dev --pool-prefix 192.168.100.0/24 tenant
openstack network create --external --provider-physical-network physnet1 --provider-network-type flat pubnet
openstack network segment set --name segment1 d8391bfb-4466-4a45-972c-45ffcec9f6bc
openstack network segment create --physical-network physnet2 --network-type flat --network pubnet segment2
openstack subnet create --no-dhcp --subnet-pool dev --subnet-range 10.232.16.0/21 --allocation-pool start=10.232.17.0,end=10.232.17.255 --dns-nameserver 10.232.36.101 --ip-version 4 --network pubnet --network-segment segment1 pubsubnetl1
openstack subnet create --gateway 10.232.40.100 --no-dhcp --subnet-pool dev --subnet-range 10.232.40.0/21 --allocation-pool start=10.232.41.0,end=10.232.41.255 --dns-nameserver 10.232.36.101 --ip-version 4 --network pubnet --network-segment segment2 pubsubnetl2
openstack network create --internal --provider-network-type vxlan tenantnet
openstack subnet create --dhcp --ip-version 4 --subnet-range 192.168.100.0/24 --subnet-pool tenant --dns-nameserver 10.232.36.101 --network tenantnet tenantsubnet
openstack router create --disable --no-ha --distributed pubrouter
openstack router set --disable-snat --external-gateway pubnet --enable pubrouter
openstack network create --internal --provider-network-type vxlan othertenantnet
openstack subnet pool set --pool-prefix 192.168.200.0/24 tenant
openstack subnet create --dhcp --ip-version 4 --subnet-range 192.168.200.0/24 --subnet-pool tenant --dns-nameserver 10.232.36.101 --network othertenantnet othertenantsubnet
openstack router add subnet pubrouter othertenantsubnet
outputs in case they are needed:
https://pastebin.canonical.com/p/fRQTxRKYCt/
Note: (This setup uses routed provider networks so unit names correspond to nodes that have connectivity to the right physnets, however, this is irrelevant for this bug)
l1 - leaf 1
l2 - leaf 2)
openstack subnet show tenantsubnet | grep cid
| cidr | 192.168.100.0/24 |
openstack subnet show othertenantsubnet | grep cid
| cidr | 192.168.200.0/24 |
# 2 qr- interfaces per namespace on every compute - one per tenant
network
juju run --application neutron-gateway-l2,neutron-gateway-l1,neutron-openvswitch-l1,neutron-openvswitch-l2 'sudo ip netns exec qrouter-4f9ca9ef-303b-4082-abbc-e50782d9b800 ip -4 -o -br a s'
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nqr-a9696fa7-96 at if23 UP 192.168.100.1/24
\nqr-ad410866-0c at if24 UP 192.168.200.1/24 \nrfp-4f9ca9ef-3 UP 169.254.109.46/31
\n"
UnitId: neutron-gateway-l1/0
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nqr-a9696fa7-96 at if26 UP 192.168.100.1/24
\nqr-ad410866-0c at if28 UP 192.168.200.1/24 \nrfp-4f9ca9ef-3 UP 169.254.109.46/31
\n"
UnitId: neutron-gateway-l2/0
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nrfp-4f9ca9ef-3 at if3 UP 169.254.109.46/31
\nqr-a9696fa7-96 UNKNOWN 192.168.100.1/24 \nqr-ad410866-0c UNKNOWN
\ 192.168.200.1/24 \n"
UnitId: neutron-openvswitch-l1/0
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nrfp-4f9ca9ef-3 at if3 UP 169.254.109.46/31
\nqr-a9696fa7-96 UNKNOWN 192.168.100.1/24 \nqr-ad410866-0c UNKNOWN
\ 192.168.200.1/24 \n"
UnitId: neutron-openvswitch-l1/1
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nrfp-4f9ca9ef-3 at if3 UP 169.254.109.46/31
\nqr-a9696fa7-96 UNKNOWN 192.168.100.1/24 \nqr-ad410866-0c UNKNOWN
\ 192.168.200.1/24 \n"
UnitId: neutron-openvswitch-l1/2
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nrfp-4f9ca9ef-3 at if3 UP 169.254.109.46/31
\nqr-a9696fa7-96 UNKNOWN 192.168.100.1/24 \nqr-ad410866-0c UNKNOWN
\ 192.168.200.1/24 \n"
UnitId: neutron-openvswitch-l2/0
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nrfp-4f9ca9ef-3 at if3 UP 169.254.109.46/31
\nqr-a9696fa7-96 UNKNOWN 192.168.100.1/24 \nqr-ad410866-0c UNKNOWN
\ 192.168.200.1/24 \n"
UnitId: neutron-openvswitch-l2/1
# removed 192.168.200.0/24 from pubrouter
openstack router remove subnet pubrouter othertenantsubnet
# ports are still there
juju run --application neutron-gateway-l2,neutron-gateway-l1,neutron-openvswitch-l1,neutron-openvswitch-l2 'sudo ip netns exec qrouter-4f9ca9ef-303b-4082-abbc-e50782d9b800 ip -4 -o -br a s'
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nqr-a9696fa7-96 at if23 UP 192.168.100.1/24
\nqr-ad410866-0c at if24 UP 192.168.200.1/24 \nrfp-4f9ca9ef-3 UP 169.254.109.46/31
\n"
UnitId: neutron-gateway-l1/0
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nrfp-4f9ca9ef-3 at if3 UP 169.254.109.46/31
\nqr-a9696fa7-96 UNKNOWN 192.168.100.1/24 \nqr-ad410866-0c UNKNOWN
\ 192.168.200.1/24 \n"
UnitId: neutron-openvswitch-l1/0
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nrfp-4f9ca9ef-3 at if3 UP 169.254.109.46/31
\nqr-a9696fa7-96 UNKNOWN 192.168.100.1/24 \nqr-ad410866-0c UNKNOWN
\ 192.168.200.1/24 \n"
UnitId: neutron-openvswitch-l1/1
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nrfp-4f9ca9ef-3 at if3 UP 169.254.109.46/31
\nqr-a9696fa7-96 UNKNOWN 192.168.100.1/24 \nqr-ad410866-0c UNKNOWN
\ 192.168.200.1/24 \n"
UnitId: neutron-openvswitch-l1/2
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nrfp-4f9ca9ef-3 at if3 UP 169.254.109.46/31
\nqr-a9696fa7-96 UNKNOWN 192.168.100.1/24 \nqr-ad410866-0c UNKNOWN
\ 192.168.200.1/24 \n"
UnitId: neutron-openvswitch-l2/0
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nrfp-4f9ca9ef-3 at if3 UP 169.254.109.46/31
\nqr-a9696fa7-96 UNKNOWN 192.168.100.1/24 \nqr-ad410866-0c UNKNOWN
\ 192.168.200.1/24 \n"
UnitId: neutron-openvswitch-l2/1
- Stdout: "lo UNKNOWN 127.0.0.1/8 \nqr-a9696fa7-96 at if26 UP 192.168.100.1/24
\nqr-ad410866-0c at if28 UP 192.168.200.1/24 \nrfp-4f9ca9ef-3 UP 169.254.109.46/31
\n"
UnitId: neutron-gateway-l2/0
# but not policy rules
juju run --application neutron-gateway-l2,neutron-gateway-l1,neutron-openvswitch-l1,neutron-openvswitch-l2 'sudo ip netns exec qrouter-4f9ca9ef-303b-4082-abbc-e50782d9b800 ip rule'
- Stdout: "0:\tfrom all lookup local \n32766:\tfrom all lookup main \n32767:\tfrom
all lookup default \n80000:\tfrom 192.168.100.0/24 lookup 16 \n80000:\tfrom 192.168.200.0/24
lookup 16 \n"
UnitId: neutron-gateway-l1/0
- Stdout: "0:\tfrom all lookup local \n32766:\tfrom all lookup main \n32767:\tfrom
all lookup default \n80000:\tfrom 192.168.100.0/24 lookup 16 \n80000:\tfrom 192.168.200.0/24
lookup 16 \n"
UnitId: neutron-openvswitch-l1/0
- Stdout: "0:\tfrom all lookup local \n32766:\tfrom all lookup main \n32767:\tfrom
all lookup default \n80000:\tfrom 192.168.100.0/24 lookup 16 \n80000:\tfrom 192.168.200.0/24
lookup 16 \n"
UnitId: neutron-openvswitch-l1/1
- Stdout: "0:\tfrom all lookup local \n32766:\tfrom all lookup main \n32767:\tfrom
all lookup default \n80000:\tfrom 192.168.100.0/24 lookup 16 \n80000:\tfrom 192.168.200.0/24
lookup 16 \n"
UnitId: neutron-openvswitch-l1/2
- Stdout: "0:\tfrom all lookup local \n32766:\tfrom all lookup main \n32767:\tfrom
all lookup default \n80000:\tfrom 192.168.100.0/24 lookup 16 \n80000:\tfrom 192.168.200.0/24
lookup 16 \n"
UnitId: neutron-openvswitch-l2/0
- Stdout: "0:\tfrom all lookup local \n32766:\tfrom all lookup main \n32767:\tfrom
all lookup default \n80000:\tfrom 192.168.100.0/24 lookup 16 \n80000:\tfrom 192.168.200.0/24
lookup 16 \n"
UnitId: neutron-openvswitch-l2/1
- Stdout: "0:\tfrom all lookup local \n32766:\tfrom all lookup main \n32767:\tfrom
all lookup default \n80000:\tfrom 192.168.100.0/24 lookup 16 \n80000:\tfrom 192.168.200.0/24
lookup 16 \n"
UnitId: neutron-gateway-l2/0
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