IPv6 Security Groups for Pods Support #2639
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What type of PR is this?
feature
Which issue does this PR fix:
N/A
What does this PR do / Why do we need it:
This PR adds VPC CNI support for IPv6 Security Groups for Pods. It is dependent on VPC Resource Controller support added in aws/amazon-vpc-resource-controller-k8s#309.
This PR is unfortunately quite large, so to help reviewers, I will call out major areas to focus on:
Initialization
cmd/aws-vpc-cni-init/main.go- default sysctls for IPv6 have been modifiedpkg/ipamd/ipamd.go- configuration of IPv6 Security Groups for Pods needs to be allowedENI Management
pkg/awsutils/awsutils.go- when attaching an IPv6 trunk ENI, the metadata associated with the ENI needs to incorporate IPv6.pkg/ipamd/ipamd.go- when IPv6 Security Groups for Pods is enabled, IPAMD must wait for a trunk ENI to be attachedpkg/networkutils/network.go- support for attaching an IPv6 trunk ENI, which includes getting the IPv6 gateway address and configuring relevant routes and rulesPod Interface Management
cmd/routed-eni-cni-plugin/driver/driver.go- sysctls for branch interfaces and IPv6 veth interfaces are setpkg/ipamd/rpc_handler.go- support for deriving IPv6 branch ENI information from annotationCaching
Testing
test/integration/pod-enihas been made compatible for IPv6Other
I realized that
make unit-testwas not invoking unit tests defined incmd/.... Some of these unit tests were failing, so I made sure all were passing in this PR.If an issue # is not available please add repro steps and logs from IPAMD/CNI showing the issue:
N/A
Testing done on this change:
Manually verified that
test/integration/pod-enipasses. Also manually verified that all existing integration tests pass.Further validation is in progress for upgrade/downgrade, scale, performance, etc.
Will this PR introduce any new dependencies?:
No
Will this break upgrades or downgrades? Has updating a running cluster been tested?:
No, Yes
Does this change require updates to the CNI daemonset config files to work?:
No
Does this PR introduce any user-facing change?:
Yes
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.