** Changed in: linux-kvm (Ubuntu Bionic)
Status: In Progress => Fix Committed
** Changed in: linux-kvm (Ubuntu Disco)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1811819
Title:
please include the kernel module VXLAN
Status in linux-kvm package in Ubuntu:
In Progress
Status in linux-kvm source package in Xenial:
Fix Committed
Status in linux-kvm source package in Bionic:
Fix Committed
Status in linux-kvm source package in Disco:
Fix Committed
Bug description:
== SRU Justification ==
VXLAN is used by Flannel and maybe other CNI plugins for Kubernetes,
it will be great to enable the support in KVM kernels.
== Fix ==
Enable the CONFIG_VXLAN in the config file.
CONFIG_NET_UDP_TUNNEL=m and other configs were added automatically with
updateconfigs.
CONFIG_OPENVSWITCH_VXLAN supprt was excluded intentionally as this is
not requested (and to reduce the binary size).
== Test ==
Test kernels could be found here:
https://people.canonical.com/~phlin/kernel/lp-1811819-vxlan/
Kernel smoke tested.
User has also verified that all the patched kernels are working as
expected.
== Regression Potentail ==
Low, this enables the support for VXLAN module on KVM kernels, we might
see some related bugs in the future. Since we already have this in the
generic kernel so the impact should be small.
== Original Bug Report ==
The kernel built with this packages does have VXLAN compiled.
It would be nice if this could be fixed since VXLAN is used by Flannel and
maybe other CNI plugins for Kubernetes.
$ grep -i vxlan /boot/config-4.4.0-1039-kvm
# CONFIG_VXLAN is not set
When running a kubernetes cluster with Flannel with this image:
$ kubectl logs kube-flannel-ds-amd64-jfkc8 -n kube-system
--kubeconfig=case1-admin.conf
I0116 11:35:34.176962 1 main.go:475] Determining IP address of default
interface
I0116 11:35:34.177231 1 main.go:488] Using interface with name ens3 and
address 10.32.192.14
I0116 11:35:34.177259 1 main.go:505] Defaulting external address to
interface address (10.32.192.14)
I0116 11:35:34.191358 1 kube.go:131] Waiting 10m0s for node controller
to sync
I0116 11:35:34.273844 1 kube.go:294] Starting kube subnet manager
I0116 11:35:35.274075 1 kube.go:138] Node controller sync successful
I0116 11:35:35.274106 1 main.go:235] Created subnet manager: Kubernetes
Subnet Manager - node-1-case1
I0116 11:35:35.274113 1 main.go:238] Installing signal handlers
I0116 11:35:35.274233 1 main.go:353] Found network config - Backend
type: vxlan
I0116 11:35:35.274292 1 vxlan.go:120] VXLAN config: VNI=1 Port=0
GBP=false DirectRouting=false
E0116 11:35:35.275803 1 main.go:280] Error registering network:
operation not supported
I0116 11:35:35.275860 1 main.go:333] Stopping shutdownHandler...
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