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Add service account selector support in ACNP #3044

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merged 1 commit into from
Feb 17, 2022

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GraysonWu
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@GraysonWu GraysonWu commented Nov 23, 2021

Fixes #2927.

This PR added serviceAccount field support to ACNP. It uses
Namespace and Name to specify a ServiceAccount and all Pods with this
ServiceAccount will be selected as workloads. It could be used in
egress to, ingress from and appliedTo of both policy and single
rule.
To implement this feature, this PR also added a custom label to
all Pods internally, which looks like:
internal.antrea.io/service-account:[ServiceAccountName]. And when
process ACNP, serviceAccount will be translate to a GroupSelector
with Namespace and PodSelector to select Pods we need.

Signed-off-by: wgrayson [email protected]

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codecov-commenter commented Nov 23, 2021

Codecov Report

Merging #3044 (42088ae) into main (15de4cf) will decrease coverage by 5.98%.
The diff coverage is 78.20%.

Impacted file tree graph

@@            Coverage Diff             @@
##             main    #3044      +/-   ##
==========================================
- Coverage   60.95%   54.97%   -5.99%     
==========================================
  Files         266      371     +105     
  Lines       26508    50828   +24320     
==========================================
+ Hits        16159    27943   +11784     
- Misses       8597    20480   +11883     
- Partials     1752     2405     +653     
Flag Coverage Δ
e2e-tests 53.74% <62.82%> (?)
integration-tests 36.28% <ø> (?)
kind-e2e-tests 49.56% <21.81%> (+1.73%) ⬆️
unit-tests 41.67% <76.36%> (+0.03%) ⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files Coverage Δ
pkg/controller/networkpolicy/validate.go 73.77% <53.57%> (+32.98%) ⬆️
...g/controller/networkpolicy/clusternetworkpolicy.go 81.03% <87.09%> (+7.64%) ⬆️
pkg/controller/grouping/group_entity_index.go 90.57% <100.00%> (-3.45%) ⬇️
pkg/controller/networkpolicy/crd_utils.go 90.20% <100.00%> (+2.97%) ⬆️
pkg/agent/cniserver/pod_configuration_linux.go 26.31% <0.00%> (-40.36%) ⬇️
pkg/controller/ipam/antrea_ipam_controller.go 48.71% <0.00%> (-31.57%) ⬇️
pkg/controller/networkpolicy/endpoint_querier.go 61.46% <0.00%> (-29.97%) ⬇️
pkg/controller/egress/controller.go 61.11% <0.00%> (-27.34%) ⬇️
.../registry/networkpolicy/clustergroupmember/rest.go 64.28% <0.00%> (-23.95%) ⬇️
pkg/agent/cniserver/ipam/antrea_ipam.go 55.55% <0.00%> (-23.62%) ⬇️
... and 337 more

@GraysonWu GraysonWu force-pushed the sa-selector branch 2 times, most recently from 3a108a6 to 32414cc Compare December 4, 2021 03:20
@GraysonWu GraysonWu changed the title [WIP] Add service account selector support in ACNP Add service account selector support in ACNP Dec 4, 2021
@GraysonWu GraysonWu changed the title Add service account selector support in ACNP [WIP] Add service account selector support in ACNP Dec 7, 2021
@GraysonWu GraysonWu force-pushed the sa-selector branch 5 times, most recently from afdac9f to a1a6976 Compare December 15, 2021 02:13
@GraysonWu GraysonWu force-pushed the sa-selector branch 3 times, most recently from 59be42d to b5480c4 Compare January 6, 2022 20:07
@GraysonWu GraysonWu changed the title [WIP] Add service account selector support in ACNP Add service account selector support in ACNP Jan 6, 2022
@GraysonWu GraysonWu force-pushed the sa-selector branch 3 times, most recently from af508b0 to 01782b4 Compare January 7, 2022 21:48
pkg/apis/crd/v1alpha1/types.go Outdated Show resolved Hide resolved
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pkg/controller/networkpolicy/networkpolicy_controller.go Outdated Show resolved Hide resolved
// re-processed based on if they are affected by an added/updated/deleted
// ServiceAccount.
func (n *NetworkPolicyController) filterACNPsByServiceAccount(sa *v1.ServiceAccount) (acnps []*crdv1alpha1.ClusterNetworkPolicy) {
acnpObjs, err := n.cnpInformer.Informer().GetIndexer().ByIndex(ServiceAccountsPeerIndex, HasServiceAccountsPeer)
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@tnqn is there any issue with defining an index like this which simply partitions all the objects into 2 different groups?

pkg/controller/networkpolicy/clusternetworkpolicy.go Outdated Show resolved Hide resolved
pkg/apis/crd/v1alpha1/types.go Outdated Show resolved Hide resolved
pkg/apis/crd/v1alpha1/types.go Outdated Show resolved Hide resolved
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@GraysonWu GraysonWu force-pushed the sa-selector branch 2 times, most recently from 6c6b9c9 to 341a695 Compare January 20, 2022 22:55
@GraysonWu GraysonWu force-pushed the sa-selector branch 2 times, most recently from 4f64e47 to 3399901 Compare January 28, 2022 23:50
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pkg/apis/crd/v1alpha1/types.go Outdated Show resolved Hide resolved
// workloads in AppliedTo/To/From fields.
// Cannot be set with any other selector.
// +optional
ServiceAccount *NamespacedName `json:"serviceAccount,omitempty"`
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Good to see the API is really simple now!

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In #2755, the reference struct is named ServiceReference:

// ServiceReference represents a reference to a v1.Service.
type ServiceReference struct {
	// Name of the Service
	Name string `json:"name"`
	// Namespace of the Service
	Namespace string `json:"namespace,omitempty"`
}

I feel we should either unify them to NamespacedName or create ServiceAccountReference for this one. Is there any plan?

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Good catch. I slightly prefer to unify them to NamespacedName which could be used to refer to other resources. And if we will use verbose API in the future then I guess this generic struct will still be needed.

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If unifying them sounds good, do you suggest unifying them in this PR or another one?

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I would suggest another PR.

@GraysonWu GraysonWu force-pushed the sa-selector branch 4 times, most recently from 6365995 to 1fd84d4 Compare February 11, 2022 22:55
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LGTM overall

// workloads in AppliedTo/To/From fields.
// Cannot be set with any other selector.
// +optional
ServiceAccount *NamespacedName `json:"serviceAccount,omitempty"`
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In #2755, the reference struct is named ServiceReference:

// ServiceReference represents a reference to a v1.Service.
type ServiceReference struct {
	// Name of the Service
	Name string `json:"name"`
	// Namespace of the Service
	Namespace string `json:"namespace,omitempty"`
}

I feel we should either unify them to NamespacedName or create ServiceAccountReference for this one. Is there any plan?

pkg/controller/grouping/group_entity_index.go Outdated Show resolved Hide resolved
docs/antrea-network-policy.md Outdated Show resolved Hide resolved
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LGTM. Could you squash the commits and add commit message?

// workloads in AppliedTo/To/From fields.
// Cannot be set with any other selector.
// +optional
ServiceAccount *NamespacedName `json:"serviceAccount,omitempty"`
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I would suggest another PR.

Fixes antrea-io#2927

This PR added `serviceAccount` field support to ACNP. It uses
Namespace and Name to specify a ServiceAccount and all Pods with this
ServiceAccount will be selected as workloads. It could be used in
egress `to`, ingress `from` and `appliedTo` of both policy and single
rule. To implement this feature, this PR also added a custom label to
all Pods internally, which looks like:
`internal.antrea.io/service-account:[ServiceAccountName]`. And when
process ACNP, `serviceAccount` will be translate to a `GroupSelector`
with `Namespace` and `PodSelector` to select Pods we need.

Signed-off-by: wgrayson <[email protected]>
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LGTM. Could you squash the commits and add commit message?

Thanks. Done.

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/test-all

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/test-integration

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LGTM

@antoninbas antoninbas merged commit 78e3583 into antrea-io:main Feb 17, 2022
@antoninbas antoninbas deleted the sa-selector branch February 17, 2022 21:42
bangqipropel pushed a commit to bangqipropel/antrea that referenced this pull request Mar 2, 2022
Fixes antrea-io#2927

This PR added `serviceAccount` field support to ACNP. It uses
Namespace and Name to specify a ServiceAccount and all Pods with this
ServiceAccount will be selected as workloads. It could be used in
egress `to`, ingress `from` and `appliedTo` of both policy and single
rule. To implement this feature, this PR also added a custom label to
all Pods internally, which looks like:
`internal.antrea.io/service-account:[ServiceAccountName]`. And when
process ACNP, `serviceAccount` will be translate to a `GroupSelector`
with `Namespace` and `PodSelector` to select Pods we need.

Signed-off-by: wgrayson <[email protected]>
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Support serviceAccountSelector for NetworkPolicy
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