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calico_cni_k8s_test.go
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calico_cni_k8s_test.go
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package main_test
import (
"context"
"fmt"
"math/rand"
"net"
"os"
"syscall"
"time"
"github.com/containernetworking/cni/pkg/ns"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/onsi/gomega/gexec"
"github.com/projectcalico/cni-plugin/testutils"
"github.com/projectcalico/cni-plugin/utils"
api "github.com/projectcalico/libcalico-go/lib/apis/v2"
k8sconversion "github.com/projectcalico/libcalico-go/lib/backend/k8s/conversion"
client "github.com/projectcalico/libcalico-go/lib/clientv2"
"github.com/projectcalico/libcalico-go/lib/logutils"
"github.com/projectcalico/libcalico-go/lib/names"
"github.com/projectcalico/libcalico-go/lib/numorstring"
"github.com/projectcalico/libcalico-go/lib/options"
log "github.com/sirupsen/logrus"
"github.com/vishvananda/netlink"
"k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/clientcmd"
)
var _ = Describe("CalicoCni", func() {
// Create a random seed
rand.Seed(time.Now().UTC().UnixNano())
log.SetFormatter(&logutils.Formatter{})
log.AddHook(&logutils.ContextHook{})
log.SetOutput(GinkgoWriter)
log.SetLevel(log.DebugLevel)
hostname, _ := os.Hostname()
ctx := context.Background()
calicoClient, err := client.NewFromEnv()
if err != nil {
panic(err)
}
BeforeEach(func() {
testutils.WipeK8sPods()
testutils.WipeEtcd()
})
Describe("Run Calico CNI plugin in K8s mode", func() {
utils.ConfigureLogging("info")
cniVersion := os.Getenv("CNI_SPEC_VERSION")
Context("using host-local IPAM", func() {
netconf := fmt.Sprintf(`
{
"cniVersion": "%s",
"name": "net1",
"type": "calico",
"etcd_endpoints": "http://%s:2379",
"datastore_type": "%s",
"ipam": {
"type": "host-local",
"subnet": "10.0.0.0/8"
},
"kubernetes": {
"k8s_api_root": "http://127.0.0.1:8080"
},
"policy": {"type": "k8s"},
"log_level":"info"
}`, cniVersion, os.Getenv("ETCD_IP"), os.Getenv("DATASTORE_TYPE"))
It("successfully networks the namespace", func() {
config, err := clientcmd.DefaultClientConfig.ClientConfig()
if err != nil {
panic(err)
}
clientset, err := kubernetes.NewForConfig(config)
if err != nil {
panic(err)
}
name := fmt.Sprintf("run%d", rand.Uint32())
// Create a K8s pod w/o any special params
_, err = clientset.CoreV1().Pods(testutils.K8S_TEST_NS).Create(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{Name: name},
Spec: v1.PodSpec{
Containers: []v1.Container{{
Name: name,
Image: "ignore",
}},
NodeName: hostname,
},
})
if err != nil {
panic(err)
}
containerID, session, contVeth, contAddresses, contRoutes, contNs, err := testutils.CreateContainer(netconf, name, testutils.K8S_TEST_NS, "")
Expect(err).ShouldNot(HaveOccurred())
Eventually(session).Should(gexec.Exit())
result, err := testutils.GetResultForCurrent(session, cniVersion)
if err != nil {
log.Fatalf("Error getting result from the session: %v\n", err)
}
mac := contVeth.Attrs().HardwareAddr
Expect(len(result.IPs)).Should(Equal(1))
ip := result.IPs[0].Address.IP.String()
result.IPs[0].Address.IP = result.IPs[0].Address.IP.To4() // Make sure the IP is respresented as 4 bytes
Expect(result.IPs[0].Address.Mask.String()).Should(Equal("ffffffff"))
// datastore things:
// TODO Make sure the profile doesn't exist
ids := names.WorkloadEndpointIdentifiers{
Node: hostname,
Orchestrator: "k8s",
Endpoint: "eth0",
Pod: name,
ContainerID: containerID,
}
wrkload, err := ids.CalculateWorkloadEndpointName(false)
Expect(err).NotTo(HaveOccurred())
interfaceName := k8sconversion.VethNameForWorkload(wrkload)
// The endpoint is created
endpoints, err := calicoClient.WorkloadEndpoints().List(ctx, options.ListOptions{})
Expect(err).ShouldNot(HaveOccurred())
Expect(endpoints.Items).Should(HaveLen(1))
Expect(endpoints.Items[0].Name).Should(Equal(wrkload))
Expect(endpoints.Items[0].Namespace).Should(Equal(testutils.K8S_TEST_NS))
Expect(endpoints.Items[0].Labels).Should(Equal(map[string]string{
"projectcalico.org/namespace": "test",
"projectcalico.org/orchestrator": "k8s",
}))
Expect(endpoints.Items[0].Spec).Should(Equal(api.WorkloadEndpointSpec{
Pod: name,
InterfaceName: interfaceName,
IPNetworks: []string{result.IPs[0].Address.String()},
MAC: mac.String(),
Profiles: []string{"kns.test"},
Node: hostname,
Endpoint: "eth0",
Workload: "",
ContainerID: containerID,
Orchestrator: "k8s",
}))
// Routes and interface on host - there's is nothing to assert on the routes since felix adds those.
//fmt.Println(Cmd("ip link show")) // Useful for debugging
hostVeth, err := netlink.LinkByName(interfaceName)
Expect(err).ToNot(HaveOccurred())
Expect(hostVeth.Attrs().Flags.String()).Should(ContainSubstring("up"))
Expect(hostVeth.Attrs().MTU).Should(Equal(1500))
// Assert hostVeth sysctl values are set to what we expect for IPv4.
err = testutils.CheckSysctlValue(fmt.Sprintf("/proc/sys/net/ipv4/conf/%s/proxy_arp", interfaceName), "1")
Expect(err).ShouldNot(HaveOccurred())
err = testutils.CheckSysctlValue(fmt.Sprintf("/proc/sys/net/ipv4/neigh/%s/proxy_delay", interfaceName), "0")
Expect(err).ShouldNot(HaveOccurred())
err = testutils.CheckSysctlValue(fmt.Sprintf("/proc/sys/net/ipv4/conf/%s/forwarding", interfaceName), "1")
Expect(err).ShouldNot(HaveOccurred())
// Assert if the host side route is programmed correctly.
hostRoutes, err := netlink.RouteList(hostVeth, syscall.AF_INET)
Expect(err).ShouldNot(HaveOccurred())
Expect(hostRoutes[0]).Should(Equal(netlink.Route{
LinkIndex: hostVeth.Attrs().Index,
Scope: netlink.SCOPE_LINK,
Dst: &result.IPs[0].Address,
Protocol: syscall.RTPROT_BOOT,
Table: syscall.RT_TABLE_MAIN,
Type: syscall.RTN_UNICAST,
}))
// Routes and interface in netns
Expect(contVeth.Attrs().Flags.String()).Should(ContainSubstring("up"))
// Assume the first IP is the IPv4 address
Expect(contAddresses[0].IP.String()).Should(Equal(ip))
Expect(contRoutes).Should(SatisfyAll(ContainElement(netlink.Route{
LinkIndex: contVeth.Attrs().Index,
Gw: net.IPv4(169, 254, 1, 1).To4(),
Protocol: syscall.RTPROT_BOOT,
Table: syscall.RT_TABLE_MAIN,
Type: syscall.RTN_UNICAST,
}),
ContainElement(netlink.Route{
LinkIndex: contVeth.Attrs().Index,
Scope: netlink.SCOPE_LINK,
Dst: &net.IPNet{IP: net.IPv4(169, 254, 1, 1).To4(), Mask: net.CIDRMask(32, 32)},
Protocol: syscall.RTPROT_BOOT,
Table: syscall.RT_TABLE_MAIN,
Type: syscall.RTN_UNICAST,
})))
_, err = testutils.DeleteContainer(netconf, contNs.Path(), name, testutils.K8S_TEST_NS)
Expect(err).ShouldNot(HaveOccurred())
// Make sure there are no endpoints anymore
endpoints, err = calicoClient.WorkloadEndpoints().List(ctx, options.ListOptions{})
Expect(err).ShouldNot(HaveOccurred())
Expect(endpoints.Items).Should(HaveLen(0))
// Make sure the interface has been removed from the namespace
targetNs, _ := ns.GetNS(contNs.Path())
err = targetNs.Do(func(_ ns.NetNS) error {
_, err = netlink.LinkByName("eth0")
return err
})
Expect(err).Should(HaveOccurred())
Expect(err.Error()).Should(Equal("Link not found"))
// Make sure the interface has been removed from the host
_, err = netlink.LinkByName("cali" + containerID)
Expect(err).Should(HaveOccurred())
Expect(err.Error()).Should(Equal("Link not found"))
})
Context("when a named port is set", func() {
It("it is added to the workload endpoint", func() {
config, err := clientcmd.DefaultClientConfig.ClientConfig()
if err != nil {
panic(err)
}
clientset, err := kubernetes.NewForConfig(config)
if err != nil {
panic(err)
}
name := fmt.Sprintf("run%d", rand.Uint32())
// Create a K8s pod w/o any special params
_, err = clientset.CoreV1().Pods(testutils.K8S_TEST_NS).Create(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{Name: name},
Spec: v1.PodSpec{
Containers: []v1.Container{{
Name: fmt.Sprintf("container-%s", name),
Image: "ignore",
Ports: []v1.ContainerPort{{
Name: "anamedport",
ContainerPort: 555,
}},
}},
NodeName: hostname,
},
})
if err != nil {
panic(err)
}
containerID, session, contVeth, _, _, contNs, err := testutils.CreateContainer(netconf, name, testutils.K8S_TEST_NS, "")
Expect(err).ShouldNot(HaveOccurred())
Eventually(session).Should(gexec.Exit())
result, err := testutils.GetResultForCurrent(session, cniVersion)
if err != nil {
log.Fatalf("Error getting result from the session: %v\n", err)
}
mac := contVeth.Attrs().HardwareAddr
Expect(len(result.IPs)).Should(Equal(1))
result.IPs[0].Address.IP = result.IPs[0].Address.IP.To4() // Make sure the IP is respresented as 4 bytes
Expect(result.IPs[0].Address.Mask.String()).Should(Equal("ffffffff"))
// datastore things:
// TODO Make sure the profile doesn't exist
ids := names.WorkloadEndpointIdentifiers{
Node: hostname,
Orchestrator: "k8s",
Endpoint: "eth0",
Pod: name,
ContainerID: containerID,
}
wrkload, err := ids.CalculateWorkloadEndpointName(false)
interfaceName := k8sconversion.VethNameForWorkload(wrkload)
Expect(err).NotTo(HaveOccurred())
// The endpoint is created
endpoints, err := calicoClient.WorkloadEndpoints().List(ctx, options.ListOptions{})
Expect(err).ShouldNot(HaveOccurred())
Expect(endpoints.Items).Should(HaveLen(1))
Expect(endpoints.Items[0].Name).Should(Equal(wrkload))
Expect(endpoints.Items[0].Namespace).Should(Equal(testutils.K8S_TEST_NS))
Expect(endpoints.Items[0].Labels).Should(Equal(map[string]string{
"projectcalico.org/namespace": "test",
"projectcalico.org/orchestrator": "k8s",
}))
Expect(endpoints.Items[0].Spec).Should(Equal(api.WorkloadEndpointSpec{
Pod: name,
InterfaceName: interfaceName,
IPNetworks: []string{result.IPs[0].Address.String()},
MAC: mac.String(),
Profiles: []string{"kns.test"},
Node: hostname,
Endpoint: "eth0",
Workload: "",
ContainerID: containerID,
Orchestrator: "k8s",
Ports: []api.EndpointPort{{
Name: "anamedport",
Protocol: numorstring.ProtocolFromString("tcp"),
Port: 555,
}},
}))
_, err = testutils.DeleteContainer(netconf, contNs.Path(), name, testutils.K8S_TEST_NS)
Expect(err).ShouldNot(HaveOccurred())
// Make sure there are no endpoints anymore
endpoints, err = calicoClient.WorkloadEndpoints().List(ctx, options.ListOptions{})
Expect(err).ShouldNot(HaveOccurred())
Expect(endpoints.Items).Should(HaveLen(0))
// Make sure the interface has been removed from the namespace
targetNs, _ := ns.GetNS(contNs.Path())
err = targetNs.Do(func(_ ns.NetNS) error {
_, err = netlink.LinkByName("eth0")
return err
})
Expect(err).Should(HaveOccurred())
Expect(err.Error()).Should(Equal("Link not found"))
// Make sure the interface has been removed from the host
_, err = netlink.LinkByName("cali" + containerID)
Expect(err).Should(HaveOccurred())
Expect(err.Error()).Should(Equal("Link not found"))
})
})
Context("when the same hostVeth exists", func() {
It("successfully networks the namespace", func() {
config, err := clientcmd.DefaultClientConfig.ClientConfig()
Expect(err).NotTo(HaveOccurred())
clientset, err := kubernetes.NewForConfig(config)
Expect(err).NotTo(HaveOccurred())
name := fmt.Sprintf("run%d", rand.Uint32())
// Create a K8s pod w/o any special params
_, err = clientset.CoreV1().Pods(testutils.K8S_TEST_NS).Create(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{Name: name},
Spec: v1.PodSpec{
Containers: []v1.Container{{
Name: name,
Image: "ignore",
}},
NodeName: hostname,
},
})
Expect(err).NotTo(HaveOccurred())
if err := testutils.CreateHostVeth("", name, testutils.K8S_TEST_NS); err != nil {
panic(err)
}
_, session, _, _, _, contNs, err := testutils.CreateContainer(netconf, name, testutils.K8S_TEST_NS, "")
Expect(err).ShouldNot(HaveOccurred())
Eventually(session).Should(gexec.Exit(0))
_, err = testutils.DeleteContainer(netconf, contNs.Path(), name, testutils.K8S_TEST_NS)
Expect(err).ShouldNot(HaveOccurred())
})
})
Context("using calico-ipam with ipPools annotation", func() {
It("successfully assigns an IP address from the annotated ipPool", func() {
netconfCalicoIPAM := fmt.Sprintf(`
{
"cniVersion": "%s",
"name": "net2",
"type": "calico",
"etcd_endpoints": "http://%s:2379",
"datastore_type": "%s",
"ipam": {
"type": "calico-ipam"
},
"kubernetes": {
"k8s_api_root": "http://127.0.0.1:8080"
},
"policy": {"type": "k8s"},
"log_level":"info"
}`, cniVersion, os.Getenv("ETCD_IP"), os.Getenv("DATASTORE_TYPE"))
// Create a new ipPool.
ipPool := "172.16.0.0/16"
testutils.MustCreateNewIPPool(calicoClient, ipPool, false, false, true)
_, ipPoolCIDR, err := net.ParseCIDR(ipPool)
Expect(err).NotTo(HaveOccurred())
config, err := clientcmd.DefaultClientConfig.ClientConfig()
Expect(err).NotTo(HaveOccurred())
clientset, err := kubernetes.NewForConfig(config)
Expect(err).NotTo(HaveOccurred())
// Now create a K8s pod passing in an IP pool.
name := fmt.Sprintf("run%d", rand.Uint32())
pod, err := clientset.CoreV1().Pods(testutils.K8S_TEST_NS).Create(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Annotations: map[string]string{
"cni.projectcalico.org/ipv4pools": "[\"172.16.0.0/16\"]",
},
},
Spec: v1.PodSpec{
Containers: []v1.Container{{
Name: name,
Image: "ignore",
}},
NodeName: hostname,
},
})
Expect(err).NotTo(HaveOccurred())
log.Infof("Created POD object: %v", pod)
_, _, _, contAddresses, _, contNs, err := testutils.CreateContainer(netconfCalicoIPAM, name, testutils.K8S_TEST_NS, "")
Expect(err).NotTo(HaveOccurred())
podIP := contAddresses[0].IP
log.Infof("All container IPs: %v", contAddresses)
log.Infof("Container got IP address: %s", podIP)
Expect(ipPoolCIDR.Contains(podIP)).To(BeTrue())
// Delete the container.
_, err = testutils.DeleteContainer(netconfCalicoIPAM, contNs.Path(), name, testutils.K8S_TEST_NS)
Expect(err).ShouldNot(HaveOccurred())
})
})
Context("using ipAddrsNoIpam annotation to assign IP address to a pod, bypassing IPAM", func() {
It("should successfully assigns the annotated IP address", func() {
netconfCalicoIPAM := fmt.Sprintf(`
{
"cniVersion": "%s",
"name": "net3",
"type": "calico",
"etcd_endpoints": "http://%s:2379",
"datastore_type": "%s",
"ipam": {},
"kubernetes": {
"k8s_api_root": "http://127.0.0.1:8080"
},
"policy": {"type": "k8s"},
"log_level":"info"
}`, cniVersion, os.Getenv("ETCD_IP"), os.Getenv("DATASTORE_TYPE"))
assignIP := net.IPv4(10, 0, 0, 1).To4()
config, err := clientcmd.DefaultClientConfig.ClientConfig()
Expect(err).NotTo(HaveOccurred())
clientset, err := kubernetes.NewForConfig(config)
Expect(err).NotTo(HaveOccurred())
// Now create a K8s pod passing in an IP address.
name := fmt.Sprintf("run%d", rand.Uint32())
pod, err := clientset.CoreV1().Pods(testutils.K8S_TEST_NS).Create(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Annotations: map[string]string{
"cni.projectcalico.org/ipAddrsNoIpam": "[\"10.0.0.1\"]",
},
},
Spec: v1.PodSpec{
Containers: []v1.Container{{
Name: name,
Image: "ignore",
}},
NodeName: hostname,
},
})
Expect(err).NotTo(HaveOccurred())
log.Infof("Created POD object: %v", pod)
containerID, _, contVeth, contAddresses, _, contNs, err := testutils.CreateContainer(netconfCalicoIPAM, name, testutils.K8S_TEST_NS, "")
Expect(err).NotTo(HaveOccurred())
mac := contVeth.Attrs().HardwareAddr
podIP := contAddresses[0].IP
log.Infof("All container IPs: %v", contAddresses)
log.Infof("Container got IP address: %s", podIP)
Expect(podIP).Should(Equal(assignIP))
ids := names.WorkloadEndpointIdentifiers{
Node: hostname,
Orchestrator: "k8s",
Endpoint: "eth0",
Pod: name,
ContainerID: containerID,
}
wrkload, err := ids.CalculateWorkloadEndpointName(false)
Expect(err).NotTo(HaveOccurred())
interfaceName := k8sconversion.VethNameForWorkload(wrkload)
// The endpoint is created
endpoints, err := calicoClient.WorkloadEndpoints().List(ctx, options.ListOptions{})
Expect(err).ShouldNot(HaveOccurred())
Expect(endpoints.Items).Should(HaveLen(1))
Expect(endpoints.Items[0].Name).Should(Equal(wrkload))
Expect(endpoints.Items[0].Namespace).Should(Equal(testutils.K8S_TEST_NS))
Expect(endpoints.Items[0].Labels).Should(Equal(map[string]string{
"projectcalico.org/namespace": "test",
"projectcalico.org/orchestrator": "k8s",
}))
Expect(endpoints.Items[0].Spec).Should(Equal(api.WorkloadEndpointSpec{
Pod: name,
InterfaceName: interfaceName,
IPNetworks: []string{assignIP.String() + "/32"},
MAC: mac.String(),
Profiles: []string{"kns.test"},
Node: hostname,
Endpoint: "eth0",
Workload: "",
ContainerID: containerID,
Orchestrator: "k8s",
}))
// Delete the container.
_, err = testutils.DeleteContainer(netconfCalicoIPAM, contNs.Path(), name, testutils.K8S_TEST_NS)
Expect(err).ShouldNot(HaveOccurred())
})
})
Context("using ipAddrs annotation to assign IP address to a pod, through Calico IPAM", func() {
It("should successfully assigns the annotated IP address", func() {
netconfCalicoIPAM := fmt.Sprintf(`
{
"cniVersion": "%s",
"name": "net4",
"type": "calico",
"etcd_endpoints": "http://%s:2379",
"datastore_type": "%s",
"ipam": {
"type": "calico-ipam",
"assign_ipv4": "true",
"assign_ipv6": "true"
},
"kubernetes": {
"k8s_api_root": "http://127.0.0.1:8080"
},
"policy": {"type": "k8s"},
"log_level":"debug"
}`, cniVersion, os.Getenv("ETCD_IP"), os.Getenv("DATASTORE_TYPE"))
assignIP := net.IPv4(20, 0, 0, 111).To4()
// Create a new ipPool.
ipPool := "20.0.0.0/24"
testutils.MustCreateNewIPPool(calicoClient, ipPool, false, false, true)
_, _, err := net.ParseCIDR(ipPool)
Expect(err).NotTo(HaveOccurred())
config, err := clientcmd.DefaultClientConfig.ClientConfig()
Expect(err).NotTo(HaveOccurred())
clientset, err := kubernetes.NewForConfig(config)
Expect(err).NotTo(HaveOccurred())
// Now create a K8s pod passing in an IP address.
name := fmt.Sprintf("run%d", rand.Uint32())
pod, err := clientset.CoreV1().Pods(testutils.K8S_TEST_NS).Create(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Annotations: map[string]string{
"cni.projectcalico.org/ipAddrs": "[\"20.0.0.111\"]",
},
},
Spec: v1.PodSpec{
Containers: []v1.Container{{
Name: name,
Image: "ignore",
}},
NodeName: hostname,
},
})
Expect(err).NotTo(HaveOccurred())
log.Infof("Created POD object: %v", pod)
containerID, _, contVeth, contAddresses, _, netNS, err := testutils.CreateContainer(netconfCalicoIPAM, name, testutils.K8S_TEST_NS, "")
Expect(err).NotTo(HaveOccurred())
mac := contVeth.Attrs().HardwareAddr
podIP := contAddresses[0].IP
log.Infof("All container IPs: %v", contAddresses)
log.Infof("Container got IP address: %s", podIP)
Expect(podIP).Should(Equal(assignIP))
ids := names.WorkloadEndpointIdentifiers{
Node: hostname,
Orchestrator: "k8s",
Endpoint: "eth0",
Pod: name,
ContainerID: containerID,
}
wrkload, err := ids.CalculateWorkloadEndpointName(false)
Expect(err).NotTo(HaveOccurred())
interfaceName := k8sconversion.VethNameForWorkload(wrkload)
// Make sure WorkloadEndpoint is created and has the requested IP in the datastore.
endpoints, err := calicoClient.WorkloadEndpoints().List(ctx, options.ListOptions{})
Expect(err).ShouldNot(HaveOccurred())
Expect(endpoints.Items).Should(HaveLen(1))
Expect(endpoints.Items[0].Name).Should(Equal(wrkload))
Expect(endpoints.Items[0].Namespace).Should(Equal(testutils.K8S_TEST_NS))
Expect(endpoints.Items[0].Labels).Should(Equal(map[string]string{
"projectcalico.org/namespace": "test",
"projectcalico.org/orchestrator": "k8s",
}))
Expect(endpoints.Items[0].Spec).Should(Equal(api.WorkloadEndpointSpec{
Pod: name,
InterfaceName: interfaceName,
IPNetworks: []string{assignIP.String() + "/32"},
MAC: mac.String(),
Profiles: []string{"kns.test"},
Node: hostname,
Endpoint: "eth0",
Workload: "",
ContainerID: containerID,
Orchestrator: "k8s",
}))
// Delete the container.
_, err = testutils.DeleteContainer(netconfCalicoIPAM, netNS.Path(), name, testutils.K8S_TEST_NS)
Expect(err).ShouldNot(HaveOccurred())
})
})
Context("using ipAddrs annotation to assign IP address to a pod, through Calico IPAM, without specifying cniVersion in CNI config", func() {
It("should successfully assigns the annotated IP address", func() {
netconfCalicoIPAM := fmt.Sprintf(`
{
"name": "net5",
"type": "calico",
"etcd_endpoints": "http://%s:2379",
"datastore_type": "%s",
"ipam": {
"type": "calico-ipam",
"assign_ipv4": "true",
"assign_ipv6": "true"
},
"kubernetes": {
"k8s_api_root": "http://127.0.0.1:8080"
},
"policy": {"type": "k8s"},
"log_level":"info"
}`, os.Getenv("ETCD_IP"), os.Getenv("DATASTORE_TYPE"))
assignIP := net.IPv4(20, 0, 0, 111).To4()
// Create a new ipPool.
ipPool := "20.0.0.0/24"
testutils.MustCreateNewIPPool(calicoClient, ipPool, false, false, true)
_, _, err := net.ParseCIDR(ipPool)
Expect(err).NotTo(HaveOccurred())
config, err := clientcmd.DefaultClientConfig.ClientConfig()
Expect(err).NotTo(HaveOccurred())
clientset, err := kubernetes.NewForConfig(config)
Expect(err).NotTo(HaveOccurred())
// Now create a K8s pod passing in an IP address.
name := fmt.Sprintf("run%d", rand.Uint32())
pod, err := clientset.CoreV1().Pods(testutils.K8S_TEST_NS).Create(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Annotations: map[string]string{
"cni.projectcalico.org/ipAddrs": "[\"20.0.0.111\"]",
},
},
Spec: v1.PodSpec{
Containers: []v1.Container{{
Name: name,
Image: "ignore",
}},
NodeName: hostname,
},
})
Expect(err).NotTo(HaveOccurred())
log.Infof("Created POD object: %v", pod)
containerID, _, contVeth, contAddresses, _, contNs, err := testutils.CreateContainer(netconfCalicoIPAM, name, testutils.K8S_TEST_NS, "")
Expect(err).NotTo(HaveOccurred())
mac := contVeth.Attrs().HardwareAddr
podIP := contAddresses[0].IP
log.Infof("All container IPs: %v", contAddresses)
log.Infof("Container got IP address: %s", podIP)
Expect(podIP).Should(Equal(assignIP))
ids := names.WorkloadEndpointIdentifiers{
Node: hostname,
Orchestrator: "k8s",
Endpoint: "eth0",
Pod: name,
ContainerID: containerID,
}
wrkload, err := ids.CalculateWorkloadEndpointName(false)
Expect(err).NotTo(HaveOccurred())
interfaceName := k8sconversion.VethNameForWorkload(wrkload)
// Make sure WorkloadEndpoint is created and has the requested IP in the datastore.
endpoints, err := calicoClient.WorkloadEndpoints().List(ctx, options.ListOptions{})
Expect(err).ShouldNot(HaveOccurred())
Expect(endpoints.Items).Should(HaveLen(1))
Expect(endpoints.Items[0].Name).Should(Equal(wrkload))
Expect(endpoints.Items[0].Namespace).Should(Equal(testutils.K8S_TEST_NS))
Expect(endpoints.Items[0].Labels).Should(Equal(map[string]string{
"projectcalico.org/namespace": "test",
"projectcalico.org/orchestrator": "k8s",
}))
Expect(endpoints.Items[0].Spec).Should(Equal(api.WorkloadEndpointSpec{
Pod: name,
InterfaceName: interfaceName,
IPNetworks: []string{assignIP.String() + "/32"},
MAC: mac.String(),
Profiles: []string{"kns.test"},
Node: hostname,
Endpoint: "eth0",
Workload: "",
ContainerID: containerID,
Orchestrator: "k8s",
}))
// Delete the container.
_, err = testutils.DeleteContainer(netconfCalicoIPAM, contNs.Path(), name, testutils.K8S_TEST_NS)
Expect(err).ShouldNot(HaveOccurred())
})
})
Context("Using host-local IPAM: request an IP then release it, and then request it again", func() {
It("should successfully assign IP both times and successfully release it in the middle", func() {
netconfHostLocalIPAM := fmt.Sprintf(`
{
"cniVersion": "%s",
"name": "net6",
"type": "calico",
"etcd_endpoints": "http://%s:2379",
"datastore_type": "%s",
"ipam": {
"type": "host-local",
"subnet": "usePodCidr"
},
"kubernetes": {
"k8s_api_root": "http://127.0.0.1:8080"
},
"policy": {"type": "k8s"},
"log_level":"info"
}`, cniVersion, os.Getenv("ETCD_IP"), os.Getenv("DATASTORE_TYPE"))
config, err := clientcmd.DefaultClientConfig.ClientConfig()
Expect(err).NotTo(HaveOccurred())
clientset, err := kubernetes.NewForConfig(config)
Expect(err).NotTo(HaveOccurred())
// Create a K8s Node object with PodCIDR and name equal to hostname.
_, err = clientset.CoreV1().Nodes().Create(&v1.Node{
ObjectMeta: metav1.ObjectMeta{Name: hostname},
Spec: v1.NodeSpec{
PodCIDR: "10.0.0.0/24",
},
})
Expect(err).NotTo(HaveOccurred())
By("Creating a pod with a specific IP address")
name := fmt.Sprintf("run%d", rand.Uint32())
_, err = clientset.CoreV1().Pods(testutils.K8S_TEST_NS).Create(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{Name: name},
Spec: v1.PodSpec{
Containers: []v1.Container{{
Name: name,
Image: "ignore",
}},
NodeName: hostname,
},
})
Expect(err).NotTo(HaveOccurred())
requestedIP := "10.0.0.42"
expectedIP := net.IPv4(10, 0, 0, 42).To4()
_, _, _, contAddresses, _, contNs, err := testutils.CreateContainer(netconfHostLocalIPAM, name, testutils.K8S_TEST_NS, requestedIP)
Expect(err).NotTo(HaveOccurred())
podIP := contAddresses[0].IP
log.Infof("All container IPs: %v", contAddresses)
Expect(podIP).Should(Equal(expectedIP))
By("Deleting the pod we created earlier")
_, err = testutils.DeleteContainer(netconfHostLocalIPAM, contNs.Path(), name, testutils.K8S_TEST_NS)
Expect(err).ShouldNot(HaveOccurred())
By("Creating a second pod with the same IP address as the first pod")
name2 := fmt.Sprintf("run2%d", rand.Uint32())
_, err = clientset.CoreV1().Pods(testutils.K8S_TEST_NS).Create(&v1.Pod{
ObjectMeta: metav1.ObjectMeta{Name: name2},
Spec: v1.PodSpec{
Containers: []v1.Container{{
Name: fmt.Sprintf("container-%s", name2),
Image: "ignore",
}},
NodeName: hostname,
},
})
Expect(err).NotTo(HaveOccurred())
_, _, _, contAddresses, _, contNs, err = testutils.CreateContainer(netconfHostLocalIPAM, name2, testutils.K8S_TEST_NS, requestedIP)
Expect(err).NotTo(HaveOccurred())
pod2IP := contAddresses[0].IP
log.Infof("All container IPs: %v", contAddresses)
Expect(pod2IP).Should(Equal(expectedIP))
_, err = testutils.DeleteContainer(netconfHostLocalIPAM, contNs.Path(), name2, testutils.K8S_TEST_NS)
Expect(err).ShouldNot(HaveOccurred())
})
})
// This specific test case is for an issue where k8s would send extra DELs being "aggressive". See: https://github.com/kubernetes/kubernetes/issues/44100
Context("ADD a container with a ContainerID and DEL it with the same ContainerID then ADD a new container with a different ContainerID, and send a DEL for the old ContainerID", func() {
It("Use different CNI_ContainerIDs to ADD and DEL the container", func() {
netconf := fmt.Sprintf(`
{
"cniVersion": "%s",
"name": "net7",
"type": "calico",
"etcd_endpoints": "http://%s:2379",
"datastore_type": "%s",
"ipam": {
"type": "calico-ipam"
},
"kubernetes": {
"k8s_api_root": "http://127.0.0.1:8080"
},
"policy": {"type": "k8s"},
"log_level":"info"
}`, cniVersion, os.Getenv("ETCD_IP"), os.Getenv("DATASTORE_TYPE"))
// Create a new ipPool.
ipPool := "10.0.0.0/24"
testutils.MustCreateNewIPPool(calicoClient, ipPool, false, false, true)
config, err := clientcmd.DefaultClientConfig.ClientConfig()
Expect(err).NotTo(HaveOccurred())
clientset, err := kubernetes.NewForConfig(config)
Expect(err).NotTo(HaveOccurred())
// Now create a K8s pod.
name := fmt.Sprintf("run%d", rand.Uint32())
cniContainerIDX := "container-id-00X"
cniContainerIDY := "container-id-00Y"
pod, err := clientset.CoreV1().Pods(testutils.K8S_TEST_NS).Create(
&v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: name,
},
Spec: v1.PodSpec{
Containers: []v1.Container{{
Name: name,
Image: "ignore",
}},
NodeName: hostname,
},
})
Expect(err).NotTo(HaveOccurred())
log.Infof("Created POD object: %v", pod)
// ADD the container with passing a CNI_ContainerID "X".
_, session, _, _, _, contNs, err := testutils.CreateContainerWithId(netconf, name, testutils.K8S_TEST_NS, "", cniContainerIDX)
Expect(err).ShouldNot(HaveOccurred())
Eventually(session).Should(gexec.Exit())
result, err := testutils.GetResultForCurrent(session, cniVersion)
if err != nil {
log.Fatalf("Error getting result from the session: %v\n", err)
}
log.Printf("Unmarshaled result: %v\n", result)
// Assert that the endpoint is created in the backend datastore with ContainerID "X".
endpoints, err := calicoClient.WorkloadEndpoints().List(ctx, options.ListOptions{})
Expect(err).ShouldNot(HaveOccurred())
Expect(endpoints.Items).Should(HaveLen(1))
idsX := names.WorkloadEndpointIdentifiers{
Node: hostname,
Orchestrator: "k8s",
Endpoint: "eth0",
Pod: name,
ContainerID: cniContainerIDX,
}
wrkloadX, err := idsX.CalculateWorkloadEndpointName(false)
Expect(err).NotTo(HaveOccurred())
Expect(endpoints.Items[0].Name).Should(Equal(wrkloadX))
Expect(endpoints.Items[0].Namespace).Should(Equal(testutils.K8S_TEST_NS))
Expect(endpoints.Items[0].Labels).Should(Equal(map[string]string{
"projectcalico.org/namespace": "test",
"projectcalico.org/orchestrator": "k8s",
}))
Expect(endpoints.Items[0].Spec.ContainerID).Should(Equal(cniContainerIDX))
// Delete the container with the CNI_ContainerID "X".
exitCode, err := testutils.DeleteContainerWithId(netconf, contNs.Path(), name, testutils.K8S_TEST_NS, cniContainerIDX)
Expect(err).ShouldNot(HaveOccurred())
Expect(exitCode).Should(Equal(0))
// The endpoint for ContainerID "X" should not exist in the backend datastore.
endpoints, err = calicoClient.WorkloadEndpoints().List(ctx, options.ListOptions{})
Expect(err).ShouldNot(HaveOccurred())
Expect(endpoints.Items).Should(HaveLen(0))
// ADD a new container with passing a CNI_ContainerID "Y".
_, session, _, _, _, contNs, err = testutils.CreateContainerWithId(netconf, name, testutils.K8S_TEST_NS, "", cniContainerIDY)
Expect(err).ShouldNot(HaveOccurred())
Eventually(session).Should(gexec.Exit())
result, err = testutils.GetResultForCurrent(session, cniVersion)
if err != nil {
log.Fatalf("Error getting result from the session: %v\n", err)
}
log.Printf("Unmarshaled result: %v\n", result)
// Assert that the endpoint is created in the backend datastore with ContainerID "Y".
endpoints, err = calicoClient.WorkloadEndpoints().List(ctx, options.ListOptions{})
Expect(err).ShouldNot(HaveOccurred())
Expect(endpoints.Items).Should(HaveLen(1))
idsY := names.WorkloadEndpointIdentifiers{
Node: hostname,
Orchestrator: "k8s",
Endpoint: "eth0",
Pod: name,
ContainerID: cniContainerIDY,
}
wrkloadY, err := idsY.CalculateWorkloadEndpointName(false)
Expect(err).NotTo(HaveOccurred())
Expect(endpoints.Items[0].Name).Should(Equal(wrkloadY))
Expect(endpoints.Items[0].Namespace).Should(Equal(testutils.K8S_TEST_NS))
Expect(endpoints.Items[0].Labels).Should(Equal(map[string]string{
"projectcalico.org/namespace": "test",
"projectcalico.org/orchestrator": "k8s",
}))
Expect(endpoints.Items[0].Spec.ContainerID).Should(Equal(cniContainerIDY))
// Delete the container with the CNI_ContainerID "X" again.
exitCode, err = testutils.DeleteContainerWithId(netconf, contNs.Path(), name, testutils.K8S_TEST_NS, cniContainerIDX)
Expect(err).ShouldNot(HaveOccurred())
Expect(exitCode).Should(Equal(0))
// Assert that the endpoint with ContainerID "Y" is still in the datastore.
endpoints, err = calicoClient.WorkloadEndpoints().List(ctx, options.ListOptions{})