2004269 – [4.8z] external gateway pod deletes may not clean up ECMP routes

Bug 2004269 - [4.8z] external gateway pod deletes may not clean up ECMP routes

Summary: [4.8z] external gateway pod deletes may not clean up ECMP routes

Keywords:
Status:	CLOSED ERRATA
Alias:	None
Product:	OpenShift Container Platform
Classification:	Red Hat
Component:	Networking
Sub Component:
Version:	4.6
Hardware:	Unspecified
OS:	Unspecified
Priority:	high
Severity:	high
Target Milestone:	---
Target Release:	4.8.z
Assignee:	Tim Rozet
QA Contact:	Ross Brattain
Docs Contact:
URL:
Whiteboard:
Depends On:	1978797
Blocks:	2005913
TreeView+	depends on / blocked

Reported:	2021-09-14 21:23 UTC by Tim Rozet
Modified:	2021-09-27 19:53 UTC (History)
CC List:	8 users (show)
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:
Clone Of:	1978797
Clones:	2005913 (view as bug list)
Environment:
Last Closed:	2021-09-27 19:53:12 UTC
Target Upstream Version:
Embargoed:

Attachments	(Terms of Use)

Links
System	ID	Private	Priority	Status	Summary	Last Updated
Github	openshift ovn-kubernetes pull 743	0	None	open	Bug 2004269: Sync ECMP routes on startup and fixes stale ECMP routes	2021-09-14 22:04:46 UTC
Red Hat Product Errata	RHBA-2021:3632	0	None	None	None	2021-09-27 19:53:29 UTC

Comment 2 Ross Brattain 2021-09-17 02:38:27 UTC

Deleted pod with annotations

    annotations:
      k8s.ovn.org/routing-namespaces: exgw
      k8s.ovn.org/routing-network: blah
      k8s.v1.cni.cncf.io/network-status: '[{"name":"blah","interface":"net1","ips":["fd2e:6f44:5dd8::6a"],"mac":"da:32:0c:8a:42:47","dns":{}}]'

Routes deleted

I0917 02:27:03.790614       1 egressgw.go:52] External gateway pod: testpod1, detected for namespace(s) exgw
I0917 02:27:03.790674       1 egressgw.go:83] Adding routes for external gateway pod: testpod1, next hops: "fd2e:6f44:5dd8::6a", namespace: exgw, bfd-enabled: false
2021-09-17T02:27:03.793Z|32338|unixctl|DBG|received request run["--may-exist","--policy=src-ip","--ecmp-symmetric-reply","--","lr-route-add","GR_master-0-2","fd01:0:0:3::49/128","fd2e:6f44:5dd8::6a"], id=0
2021-09-17T02:27:03.793Z|32339|nbctl|INFO|Running command run --may-exist --policy=src-ip --ecmp-symmetric-reply -- lr-route-add GR_master-0-2 fd01:0:0:3::49/128 fd2e:6f44:5dd8::6a
2021-09-17T02:27:03.793Z|32340|unixctl|DBG|replying with success, id=0: ""

I0917 02:27:03.790614       1 egressgw.go:52] External gateway pod: testpod1, detected for namespace(s) exgw
I0917 02:27:03.790674       1 egressgw.go:83] Adding routes for external gateway pod: testpod1, next hops: "fd2e:6f44:5dd8::6a", namespace: exgw, bfd-enabled: false
2021-09-17T02:27:03.793Z|32338|unixctl|DBG|received request run["--may-exist","--policy=src-ip","--ecmp-symmetric-reply","--","lr-route-add","GR_master-0-2","fd01:0:0:3::49/128","fd2e:6f44:5dd8::6a"], id=0
2021-09-17T02:27:03.793Z|32339|nbctl|INFO|Running command run --may-exist --policy=src-ip --ecmp-symmetric-reply -- lr-route-add GR_master-0-2 fd01:0:0:3::49/128 fd2e:6f44:5dd8::6a
2021-09-17T02:27:03.793Z|32340|unixctl|DBG|replying with success, id=0: ""
I0917 02:27:03.798037       1 egressgw.go:153] Deleting routes for external gateway pod: testpod1, for namespace(s) exgw
2021-09-17T02:27:03.803Z|32341|unixctl|DBG|received request run["--if-exists","--policy=src-ip","--","lr-route-del","GR_master-0-2","fd01:0:0:3::49/128","fd2e:6f44:5dd8::6a"], id=0
2021-09-17T02:27:03.803Z|32342|nbctl|INFO|Running command run --if-exists --policy=src-ip -- lr-route-del GR_master-0-2 fd01:0:0:3::49/128 fd2e:6f44:5dd8::6a
2021-09-17T02:27:03.807Z|32343|unixctl|DBG|replying with success, id=0: ""
2021-09-17T02:27:03.811Z|32344|unixctl|DBG|received request run["--format=csv","--data=bare","--no-headings","--columns=bfd","--","find","Logical_Router_Static_Route","output_port=rtoe-GR_master-0-2","nexthop=\"fd2e:6f44:5dd8::6a\"","bfd!=[]"], id=0
2021-09-17T02:27:03.811Z|32345|nbctl|DBG|Running command run --format=csv --data=bare --no-headings --columns=bfd -- find Logical_Router_Static_Route output_port=rtoe-GR_master-0-2 "nexthop=\"fd2e:6f44:5dd8::6a\"" bfd!=[]
2021-09-17T02:27:03.811Z|32346|unixctl|DBG|replying with success, id=0: ""
I0917 02:27:03.815558       1 egressgw.go:490] Did not find bfd entry for rtoe-GR_master-0-2 fd2e:6f44:5dd8::6a
2021-09-17T02:27:03.814Z|32347|unixctl|DBG|received request run["--format=csv","--data=bare","--no-headings","--columns=_uuid","--","find","BFD","logical_port=rtoe-GR_master-0-2","dst_ip=\"fd2e:6f44:5dd8::6a\""], id=0
2021-09-17T02:27:03.815Z|32348|nbctl|DBG|Running command run --format=csv --data=bare --no-headings --columns=_uuid -- find BFD logical_port=rtoe-GR_master-0-2 "dst_ip=\"fd2e:6f44:5dd8::6a\""
2021-09-17T02:27:03.815Z|32349|unixctl|DBG|replying with success, id=0: ""

Comment 4 Ross Brattain 2021-09-20 10:35:29 UTC

Verified on 4.8.0-0.nightly-2021-09-18-202713


Deleted pod with:

Annotations:  k8s.ovn.org/routing-namespaces: exgw
              k8s.ovn.org/routing-network: blah
              k8s.v1.cni.cncf.io/network-status:
                [{"name":"blah","interface":"net1","ips":["172.31.249.174", "192.168.15.5"],"mac":"da:32:0c:8a:42:47","dns":{}}]


I0920 10:28:09.558354       1 egressgw.go:153] Deleting routes for external gateway pod: testpod1, for namespace(s) exgw
2021-09-20T10:28:09.561Z|01341|unixctl|DBG|received request run["--if-exists","--policy=src-ip","--","lr-route-del","GR_ip-10-0-180-61-2.compute.internal","10.128.10.18/32","172.31.249.174] id=0
2021-09-20T10:28:09.561Z|01342|nbctl|INFO|Running command run --if-exists --policy=src-ip -- lr-route-del GR_ip-10-0-180-61-2.compute.internal 10.128.10.18/32 172.31.249.174
2021-09-20T10:28:09.565Z|01343|unixctl|DBG|replying with success, id=0: ""
2021-09-20T10:28:09.568Z|01344|unixctl|DBG|received request run["--format=csv","--data=bare","--no-headings","--columns=bfd","--","find","Logical_Router_Static_Route","output_port=rtoe-GR_ip-10-0-180-61-2.compute.internal","nexthop=\"172.31.249.174\"","bfd!=[] i>
2021-09-20T10:28:09.568Z|01345|nbctl|DBG|Running command run --format=csv --data=bare --no-headings --columns=bfd -- find Logical_Router_Static_Route output_port=rtoe-GR_ip-10-0-180-61-2.compute.internal "nexthop=\"172.31.249.174\"" bfd!=[]
2021-09-20T10:28:09.569Z|01346|unixctl|DBG|replying with success, id=0: ""
I0920 10:28:09.574851       1 egressgw.go:490] Did not find bfd entry for rtoe-GR_ip-10-0-180-61-2.compute.internal 172.31.249.174
2021-09-20T10:28:09.574Z|01347|unixctl|DBG|received request run["--format=csv","--data=bare","--no-headings","--columns=_uuid","--","find","BFD","logical_port=rtoe-GR_ip-10-0-180-61-2.compute.internal","dst_ip=\"172.31.249.174\] id=0
2021-09-20T10:28:09.574Z|01348|nbctl|DBG|Running command run --format=csv --data=bare --no-headings --columns=_uuid -- find BFD logical_port=rtoe-GR_ip-10-0-180-61-2.compute.internal "dst_ip=\"172.31.249.174\""
2021-09-20T10:28:09.574Z|01349|unixctl|DBG|replying with success, id=0: ""
2021-09-20T10:28:09.577Z|01350|unixctl|DBG|received request run["--if-exists","--policy=src-ip","--","lr-route-del","GR_ip-10-0-180-61-2.compute.internal","10.128.10.18/32","192.168.15.5] id=0
2021-09-20T10:28:09.577Z|01351|nbctl|INFO|Running command run --if-exists --policy=src-ip -- lr-route-del GR_ip-10-0-180-61-2.compute.internal 10.128.10.18/32 192.168.15.5
2021-09-20T10:28:09.580Z|01352|unixctl|DBG|replying with success, id=0: ""
2021-09-20T10:28:09.584Z|01353|unixctl|DBG|received request run["--format=csv","--data=bare","--no-headings","--columns=bfd","--","find","Logical_Router_Static_Route","output_port=rtoe-GR_ip-10-0-180-61-2.compute.internal","nexthop=\"192.168.15.5\"","bfd!=[] id=>
2021-09-20T10:28:09.584Z|01354|nbctl|DBG|Running command run --format=csv --data=bare --no-headings --columns=bfd -- find Logical_Router_Static_Route output_port=rtoe-GR_ip-10-0-180-61-2.compute.internal "nexthop=\"192.168.15.5\"" bfd!=[]
2021-09-20T10:28:09.584Z|01355|unixctl|DBG|replying with success, id=0: ""
2021-09-20T10:28:09.588Z|01356|unixctl|DBG|received request run["--format=csv","--data=bare","--no-headings","--columns=_uuid","--","find","BFD","logical_port=rtoe-GR_ip-10-0-180-61-2.compute.internal","dst_ip=\"192.168.15.5\] id=0
2021-09-20T10:28:09.588Z|01357|nbctl|DBG|Running command run --format=csv --data=bare --no-headings --columns=_uuid -- find BFD logical_port=rtoe-GR_ip-10-0-180-61-2.compute.internal "dst_ip=\"192.168.15.5\""
2021-09-20T10:28:09.588Z|01358|unixctl|DBG|replying with success, id=0: ""

Comment 7 errata-xmlrpc 2021-09-27 19:53:12 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (OpenShift Container Platform 4.8.13 bug fix update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:3632

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