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Merged
mlguerrero12 merged 3 commits into from
Jan 26, 2026
Merged

Handling mutliple namespaces #41

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18daaff
test: Use golden files for integration tests
zeeke Jan 15, 2026
3c4b1a7
Handling mutliple namespaces
zeeke Jan 14, 2026
4c73a85
int-test: Add integration test with separated networks
zeeke Jan 16, 2026
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114 changes: 114 additions & 0 deletions e2e/tests/multi-namespace-multinet.bats
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#!/usr/bin/env bats

# Note:
# This test case creates three namespaces, each with a different NetworkAttachmentDefinition
# and two pods per namespace. It tests that MultiNetworkPolicy works correctly across
# different namespaces with different network configurations.

setup() {
cd $BATS_TEST_DIRNAME
load "common"
pod_a1_net1=$(get_net1_ip "test-namespace-a" "pod-1")
pod_a2_net1=$(get_net1_ip "test-namespace-a" "pod-2")

pod_b1_net1=$(get_net1_ip "test-namespace-b" "pod-1")
pod_b2_net1=$(get_net1_ip "test-namespace-b" "pod-2")

pod_c1_net1=$(get_net1_ip "test-namespace-c" "pod-1")
pod_c2_net1=$(get_net1_ip "test-namespace-c" "pod-2")

}

@test "setup multi-namespace test environments" {
# create test manifests
kubectl create -f multi-namespace-multinet.yml

# verify all pods in namespace A are available
run kubectl -n test-namespace-a wait --all --for=condition=ready pod --timeout=${kubewait_timeout}
[ "$status" -eq "0" ]

# verify all pods in namespace B are available
run kubectl -n test-namespace-b wait --all --for=condition=ready pod --timeout=${kubewait_timeout}
[ "$status" -eq "0" ]

# verify all pods in namespace C are available
run kubectl -n test-namespace-c wait --all --for=condition=ready pod --timeout=${kubewait_timeout}
[ "$status" -eq "0" ]

sleep 3
}

@test "Allowed connectivity" {
run kubectl -n test-namespace-b exec pod-1 -- sh -c "echo x | nc -w 1 ${pod_a1_net1} 5555"
[ "$status" -eq "0" ]

run kubectl -n test-namespace-a exec pod-1 -- sh -c "echo x | nc -w 1 ${pod_b2_net1} 5555"
[ "$status" -eq "0" ]
}

@test "Denied connectivity" {
# a1 -> {a2,b1,c1,c2}
run kubectl -n test-namespace-a exec pod-1 -- sh -c "echo x | nc -w 1 ${pod_a2_net1} 5555"
[ "$status" -eq "1" ]

run kubectl -n test-namespace-a exec pod-1 -- sh -c "echo x | nc -w 1 ${pod_b1_net1} 5555"
[ "$status" -eq "1" ]

run kubectl -n test-namespace-a exec pod-1 -- sh -c "echo x | nc -w 1 ${pod_c1_net1} 5555"
[ "$status" -eq "1" ]

run kubectl -n test-namespace-a exec pod-1 -- sh -c "echo x | nc -w 1 ${pod_c2_net1} 5555"
[ "$status" -eq "1" ]

# {a2,b2,c1,c2} -> a1
run kubectl -n test-namespace-a exec pod-2 -- sh -c "echo x | nc -w 1 ${pod_a1_net1} 5555"
[ "$status" -eq "1" ]

run kubectl -n test-namespace-b exec pod-2 -- sh -c "echo x | nc -w 1 ${pod_a1_net1} 5555"
[ "$status" -eq "1" ]

run kubectl -n test-namespace-c exec pod-1 -- sh -c "echo x | nc -w 1 ${pod_a1_net1} 5555"
[ "$status" -eq "1" ]

run kubectl -n test-namespace-c exec pod-2 -- sh -c "echo x | nc -w 1 ${pod_a1_net1} 5555"
[ "$status" -eq "1" ]
}

@test "Allowed by policy absence" {
# a2 -> {b1,b2,c1,c2}
run kubectl -n test-namespace-a exec pod-2 -- sh -c "echo x | nc -w 1 ${pod_b1_net1} 5555"
[ "$status" -eq "0" ]

run kubectl -n test-namespace-a exec pod-2 -- sh -c "echo x | nc -w 1 ${pod_b2_net1} 5555"
[ "$status" -eq "0" ]

run kubectl -n test-namespace-a exec pod-2 -- sh -c "echo x | nc -w 1 ${pod_c1_net1} 5555"
[ "$status" -eq "0" ]

run kubectl -n test-namespace-a exec pod-2 -- sh -c "echo x | nc -w 1 ${pod_c2_net1} 5555"
[ "$status" -eq "0" ]

# b1 -> {a2,b2,c1,c2}
run kubectl -n test-namespace-b exec pod-1 -- sh -c "echo x | nc -w 1 ${pod_a2_net1} 5555"
[ "$status" -eq "0" ]

run kubectl -n test-namespace-b exec pod-1 -- sh -c "echo x | nc -w 1 ${pod_b2_net1} 5555"
[ "$status" -eq "0" ]

run kubectl -n test-namespace-b exec pod-1 -- sh -c "echo x | nc -w 1 ${pod_c1_net1} 5555"
[ "$status" -eq "0" ]

run kubectl -n test-namespace-b exec pod-1 -- sh -c "echo x | nc -w 1 ${pod_c2_net1} 5555"
[ "$status" -eq "0" ]
}

@test "cleanup environments" {
# remove test manifests
kubectl delete -f multi-namespace-multinet.yml
run kubectl -n test-namespace-a wait --all --for=delete pod --timeout=${kubewait_timeout}
[ "$status" -eq "0" ]
run kubectl -n test-namespace-b wait --all --for=delete pod --timeout=${kubewait_timeout}
[ "$status" -eq "0" ]
run kubectl -n test-namespace-c wait --all --for=delete pod --timeout=${kubewait_timeout}
[ "$status" -eq "0" ]
}
235 changes: 235 additions & 0 deletions e2e/tests/multi-namespace-multinet.yml
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# ┌───────────┐ ┌───────────┐ ┌───────────┐
# │namespace-a│ │namespace-b│ │namespace-c│
# │ │ │ │ │ │
# │ ┌───────┐ │ │ ┌───────┐ │ │ ┌───────┐ │
# │ │ pod-1 │◀─────│ pod-1 │ │ │ │ pod-1 │ │
# │ └───────┘────┐│ └───────┘ │ │ └───────┘ │
# │ ┌───────┐ │ ││ ┌───────┐ │ │ ┌───────┐ │
# │ │ pod-2 │ │ └─▶ pod-2 │ │ │ │ pod-2 │ │
# │ └───────┘ │ │ └───────┘ │ │ └───────┘ │
# └───────────┘ └───────────┘ └───────────┘
---
apiVersion: v1
kind: Namespace
metadata:
name: test-namespace-a
labels:
name: test-namespace-a
---
apiVersion: v1
kind: Namespace
metadata:
name: test-namespace-b
labels:
name: test-namespace-b
---
apiVersion: v1
kind: Namespace
metadata:
name: test-namespace-c
labels:
name: test-namespace-c
---
apiVersion: "k8s.cni.cncf.io/v1"
kind: NetworkAttachmentDefinition
metadata:
namespace: test-namespace-a
name: macvlan1-namespace-a
spec:
config: '{
"cniVersion": "0.3.1",
"name": "macvlan1-namespace-a",
"plugins": [
{
"type": "macvlan",
"mode": "bridge",
"ipam":{
"type":"host-local",
"subnet":"2.2.10.0/24",
"rangeStart":"2.2.10.10",
"rangeEnd":"2.2.10.19"
}
}]
}'
---
apiVersion: "k8s.cni.cncf.io/v1"
kind: NetworkAttachmentDefinition
metadata:
namespace: test-namespace-b
name: macvlan1-namespace-b
spec:
config: '{
"cniVersion": "0.3.1",
"name": "macvlan1-namespace-b",
"plugins": [
{
"type": "macvlan",
"mode": "bridge",
"ipam":{
"type":"host-local",
"subnet":"2.2.10.0/24",
"rangeStart":"2.2.10.20",
"rangeEnd":"2.2.10.29"
}
}]
}'
---
apiVersion: "k8s.cni.cncf.io/v1"
kind: NetworkAttachmentDefinition
metadata:
namespace: test-namespace-c
name: macvlan1-namespace-c
spec:
config: '{
"cniVersion": "0.3.1",
"name": "macvlan1-namespace-c",
"plugins": [
{
"type": "macvlan",
"mode": "bridge",
"ipam":{
"type":"host-local",
"subnet":"2.2.10.0/24",
"rangeStart":"2.2.10.30",
"rangeEnd":"2.2.10.39"
}
}]
}'
---


# Pods in namespace A
apiVersion: v1
kind: Pod
metadata:
name: pod-1
namespace: test-namespace-a
annotations:
k8s.v1.cni.cncf.io/networks: macvlan1-namespace-a
labels:
name: pod-1
spec:
containers:
- name: macvlan-worker1
image: ghcr.io/k8snetworkplumbingwg/multi-networkpolicy-iptables:e2e-test
command: ["nc", "-klp", "5555"]
securityContext:
privileged: true
---
apiVersion: v1
kind: Pod
metadata:
name: pod-2
namespace: test-namespace-a
annotations:
k8s.v1.cni.cncf.io/networks: macvlan1-namespace-a
labels:
name: pod-2
spec:
containers:
- name: macvlan-worker1
image: ghcr.io/k8snetworkplumbingwg/multi-networkpolicy-iptables:e2e-test
command: ["nc", "-klp", "5555"]
securityContext:
privileged: true
---
# Pods in namespace B
apiVersion: v1
kind: Pod
metadata:
name: pod-1
namespace: test-namespace-b
annotations:
k8s.v1.cni.cncf.io/networks: macvlan1-namespace-b
labels:
name: pod-1
spec:
containers:
- name: macvlan-worker1
image: ghcr.io/k8snetworkplumbingwg/multi-networkpolicy-iptables:e2e-test
command: ["nc", "-klp", "5555"]
securityContext:
privileged: true
---
apiVersion: v1
kind: Pod
metadata:
name: pod-2
namespace: test-namespace-b
annotations:
k8s.v1.cni.cncf.io/networks: macvlan1-namespace-b
labels:
name: pod-2
spec:
containers:
- name: macvlan-worker1
image: ghcr.io/k8snetworkplumbingwg/multi-networkpolicy-iptables:e2e-test
command: ["nc", "-klp", "5555"]
securityContext:
privileged: true
---
# Pods in namespace C
apiVersion: v1
kind: Pod
metadata:
name: pod-1
namespace: test-namespace-c
annotations:
k8s.v1.cni.cncf.io/networks: macvlan1-namespace-c
labels:
name: pod-1
spec:
containers:
- name: macvlan-worker1
image: ghcr.io/k8snetworkplumbingwg/multi-networkpolicy-iptables:e2e-test
command: ["nc", "-klp", "5555"]
securityContext:
privileged: true
---
apiVersion: v1
kind: Pod
metadata:
name: pod-2
namespace: test-namespace-c
annotations:
k8s.v1.cni.cncf.io/networks: macvlan1-namespace-c
labels:
name: pod-2
spec:
containers:
- name: macvlan-worker1
image: ghcr.io/k8snetworkplumbingwg/multi-networkpolicy-iptables:e2e-test
command: ["nc", "-klp", "5555"]
securityContext:
privileged: true
---
apiVersion: k8s.cni.cncf.io/v1beta1
kind: MultiNetworkPolicy
metadata:
name: test-multinetwork-policy-namespace-a
namespace: test-namespace-a
annotations:
k8s.v1.cni.cncf.io/policy-for: test-namespace-a/macvlan1-namespace-a,test-namespace-b/macvlan1-namespace-b,test-namespace-c/macvlan1-namespace-c
spec:
podSelector:
matchLabels:
name: pod-1
ingress:
- from:
- podSelector:
matchLabels:
name: pod-1
namespaceSelector:
matchLabels:
name: test-namespace-b
egress:
- to:
- podSelector:
matchLabels:
name: pod-2
namespaceSelector:
matchLabels:
name: test-namespace-b
policyTypes:
- Ingress
- Egress
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