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daemon.go
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daemon.go
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package daemon
import (
"context"
"encoding/json"
"fmt"
"io/ioutil"
"net"
"os"
"path/filepath"
"sort"
"strconv"
"strings"
"sync"
"time"
"github.com/AliyunContainerService/terway/pkg/aliyun"
"github.com/AliyunContainerService/terway/pkg/aliyun/client"
podENITypes "github.com/AliyunContainerService/terway/pkg/apis/network.alibabacloud.com/v1beta1"
"github.com/AliyunContainerService/terway/pkg/backoff"
terwayIP "github.com/AliyunContainerService/terway/pkg/ip"
"github.com/AliyunContainerService/terway/pkg/ipam"
"github.com/AliyunContainerService/terway/pkg/link"
"github.com/AliyunContainerService/terway/pkg/logger"
"github.com/AliyunContainerService/terway/pkg/metric"
"github.com/AliyunContainerService/terway/pkg/pool"
"github.com/AliyunContainerService/terway/pkg/storage"
"github.com/AliyunContainerService/terway/pkg/tracing"
"github.com/AliyunContainerService/terway/rpc"
"github.com/AliyunContainerService/terway/types"
"github.com/containernetworking/cni/libcni"
containertypes "github.com/containernetworking/cni/pkg/types"
"github.com/pkg/errors"
corev1 "k8s.io/api/core/v1"
k8sErr "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/util/wait"
)
const (
daemonModeVPC = "VPC"
daemonModeENIMultiIP = "ENIMultiIP"
daemonModeENIOnly = "ENIOnly"
gcPeriod = 5 * time.Minute
poolCheckPeriod = 10 * time.Minute
conditionFalse = "false"
conditionTrue = "true"
networkServiceName = "default"
tracingKeyName = "name"
tracingKeyDaemonMode = "daemon_mode"
tracingKeyConfigFilePath = "config_file_path"
tracingKeyKubeConfig = "kubeconfig"
tracingKeyMaster = "master"
tracingKeyPendingPodsCount = "pending_pods_count"
commandMapping = "mapping"
cniDefaultPath = "/opt/cni/bin"
// this file is generated from configmap
terwayCNIConf = "/etc/eni/10-terway.conf"
cniExecTimeout = 10 * time.Second
)
type networkService struct {
daemonMode string
configFilePath string
kubeConfig string
master string
k8s Kubernetes
resourceDB storage.Storage
vethResMgr ResourceManager
eniResMgr ResourceManager
eniIPResMgr ResourceManager
eipResMgr ResourceManager
//networkResourceMgr ResourceManager
mgrForResource map[string]ResourceManager
pendingPods sync.Map
sync.RWMutex
cniBinPath string
enableTrunk bool
ipFamily *types.IPFamily
ipamType types.IPAMType
eniCapPolicy types.ENICapPolicy
rpc.UnimplementedTerwayBackendServer
}
var serviceLog = logger.DefaultLogger.WithField("subSys", "network-service")
var _ rpc.TerwayBackendServer = (*networkService)(nil)
func (n *networkService) getResourceManagerForRes(resType string) ResourceManager {
return n.mgrForResource[resType]
}
//return resource relation in db, or return nil.
func (n *networkService) getPodResource(info *types.PodInfo) (types.PodResources, error) {
obj, err := n.resourceDB.Get(podInfoKey(info.Namespace, info.Name))
if err == nil {
return obj.(types.PodResources), nil
}
if err == storage.ErrNotFound {
return types.PodResources{}, nil
}
return types.PodResources{}, err
}
func (n *networkService) deletePodResource(info *types.PodInfo) error {
key := podInfoKey(info.Namespace, info.Name)
return n.resourceDB.Delete(key)
}
func (n *networkService) allocateVeth(ctx *networkContext, old *types.PodResources) (*types.Veth, error) {
oldVethRes := old.GetResourceItemByType(types.ResourceTypeVeth)
oldVethID := ""
if old.PodInfo != nil {
if len(oldVethRes) == 0 {
ctx.Log().Debugf("veth for pod %s is zero", podInfoKey(old.PodInfo.Namespace, old.PodInfo.Name))
} else if len(oldVethRes) > 1 {
ctx.Log().Warnf("veth for pod %s is more than one", podInfoKey(old.PodInfo.Namespace, old.PodInfo.Name))
} else {
oldVethID = oldVethRes[0].ID
}
}
res, err := n.vethResMgr.Allocate(ctx, oldVethID)
if err != nil {
return nil, err
}
return res.(*types.Veth), nil
}
func (n *networkService) allocateENI(ctx *networkContext, old *types.PodResources) (*types.ENI, error) {
oldENIRes := old.GetResourceItemByType(types.ResourceTypeENI)
oldENIID := ""
if old.PodInfo != nil {
if len(oldENIRes) == 0 {
ctx.Log().Debugf("eniip for pod %s is zero", podInfoKey(old.PodInfo.Namespace, old.PodInfo.Name))
} else if len(oldENIRes) > 1 {
ctx.Log().Warnf("eniip for pod %s is more than one", podInfoKey(old.PodInfo.Namespace, old.PodInfo.Name))
} else {
oldENIID = oldENIRes[0].ID
}
}
res, err := n.eniResMgr.Allocate(ctx, oldENIID)
if err != nil {
return nil, err
}
return res.(*types.ENI), nil
}
func (n *networkService) allocateENIMultiIP(ctx *networkContext, old *types.PodResources) (*types.ENIIP, error) {
oldENIIPRes := old.GetResourceItemByType(types.ResourceTypeENIIP)
oldENIIPID := ""
if old.PodInfo != nil {
if len(oldENIIPRes) == 0 {
ctx.Log().Debugf("eniip for pod %s is zero", podInfoKey(old.PodInfo.Namespace, old.PodInfo.Name))
} else if len(oldENIIPRes) > 1 {
ctx.Log().Warnf("eniip for pod %s is more than one", podInfoKey(old.PodInfo.Namespace, old.PodInfo.Name))
} else {
oldENIIPID = oldENIIPRes[0].ID
}
}
res, err := n.eniIPResMgr.Allocate(ctx, oldENIIPID)
if err != nil {
return nil, err
}
return res.(*types.ENIIP), nil
}
func (n *networkService) allocateEIP(ctx *networkContext, old *types.PodResources) (*types.EIP, error) {
oldEIPRes := old.GetResourceItemByType(types.ResourceTypeEIP)
oldEIPID := ""
if old.PodInfo != nil {
if len(oldEIPRes) == 0 {
ctx.Log().Debugf("eip for pod %s is zero", podInfoKey(old.PodInfo.Namespace, old.PodInfo.Name))
} else if len(oldEIPRes) > 1 {
ctx.Log().Warnf("eip for pod %s is more than one", podInfoKey(old.PodInfo.Namespace, old.PodInfo.Name))
} else {
oldEIPID = oldEIPRes[0].ID
}
}
res, err := n.eipResMgr.Allocate(ctx, oldEIPID)
if err != nil {
return nil, err
}
return res.(*types.EIP), nil
}
func (n *networkService) AllocIP(ctx context.Context, r *rpc.AllocIPRequest) (*rpc.AllocIPReply, error) {
serviceLog.WithFields(map[string]interface{}{
"pod": podInfoKey(r.K8SPodNamespace, r.K8SPodName),
"containerID": r.K8SPodInfraContainerId,
"netNS": r.Netns,
"ifName": r.IfName,
}).Info("alloc ip req")
_, exist := n.pendingPods.LoadOrStore(podInfoKey(r.K8SPodNamespace, r.K8SPodName), struct{}{})
if exist {
return nil, fmt.Errorf("pod %s resource processing", podInfoKey(r.K8SPodNamespace, r.K8SPodName))
}
defer func() {
n.pendingPods.Delete(podInfoKey(r.K8SPodNamespace, r.K8SPodName))
}()
n.RLock()
defer n.RUnlock()
var (
start = time.Now()
err error
)
defer func() {
metric.RPCLatency.WithLabelValues("AllocIP", fmt.Sprint(err != nil)).Observe(metric.MsSince(start))
}()
// 0. Get pod Info
podinfo, err := n.k8s.GetPod(r.K8SPodNamespace, r.K8SPodName)
if err != nil {
return nil, errors.Wrapf(err, "error get pod info for: %+v", r)
}
// 1. Init Context
networkContext := &networkContext{
Context: ctx,
resources: []types.ResourceItem{},
pod: podinfo,
k8sService: n.k8s,
}
allocIPReply := &rpc.AllocIPReply{IPv4: n.ipFamily.IPv4, IPv6: n.ipFamily.IPv6}
defer func() {
// roll back allocated resource when error
if err != nil {
networkContext.Log().Errorf("alloc result with error, %+v", err)
for _, res := range networkContext.resources {
err = n.deletePodResource(podinfo)
networkContext.Log().Errorf("rollback res[%v] with error, %+v", res, err)
mgr := n.getResourceManagerForRes(res.Type)
if mgr == nil {
networkContext.Log().Warnf("error cleanup allocated network resource %s, %s: %v", res.ID, res.Type, err)
continue
}
err = mgr.Release(networkContext, res)
if err != nil {
networkContext.Log().Infof("rollback res error: %+v", err)
}
}
} else {
networkContext.Log().Infof("alloc result: %+v", allocIPReply)
}
}()
// 2. Find old resource info
oldRes, err := n.getPodResource(podinfo)
if err != nil {
return nil, errors.Wrapf(err, "error get pod resources from db for pod %+v", podinfo)
}
if !n.verifyPodNetworkType(podinfo.PodNetworkType) {
return nil, fmt.Errorf("unexpect pod network type allocate, maybe daemon mode changed: %+v", podinfo.PodNetworkType)
}
var netConf []*rpc.NetConf
// 3. Allocate network resource for pod
switch podinfo.PodNetworkType {
case podNetworkTypeENIMultiIP:
allocIPReply.IPType = rpc.IPType_TypeENIMultiIP
var netConfs []*rpc.NetConf
netConfs, err = n.multiIPFromCRD(podinfo, true)
if err != nil {
return nil, err
}
netConf = append(netConf, netConfs...)
defaultIfSet := false
for _, cfg := range netConf {
if defaultIf(cfg.IfName) {
defaultIfSet = true
}
}
if !defaultIfSet {
// alloc eniip
var eniIP *types.ENIIP
eniIP, err = n.allocateENIMultiIP(networkContext, &oldRes)
if err != nil {
return nil, fmt.Errorf("error get allocated eniip ip for: %+v, result: %+v", podinfo, err)
}
newRes := types.PodResources{
PodInfo: podinfo,
Resources: eniIP.ToResItems(),
NetNs: func(s string) *string {
return &s
}(r.Netns),
}
networkContext.resources = append(networkContext.resources, newRes.Resources...)
if n.eipResMgr != nil && podinfo.EipInfo.PodEip {
podinfo.PodIPs = eniIP.IPSet
var eipRes *types.EIP
eipRes, err = n.allocateEIP(networkContext, &oldRes)
if err != nil {
return nil, fmt.Errorf("error get allocated eip for: %+v, result: %+v", podinfo, err)
}
eipResItem := eipRes.ToResItems()
newRes.Resources = append(newRes.Resources, eipResItem...)
networkContext.resources = append(networkContext.resources, eipResItem...)
}
err = n.resourceDB.Put(podInfoKey(podinfo.Namespace, podinfo.Name), newRes)
if err != nil {
return nil, errors.Wrapf(err, "error put resource into store")
}
netConf = append(netConf, &rpc.NetConf{
BasicInfo: &rpc.BasicInfo{
PodIP: eniIP.IPSet.ToRPC(),
PodCIDR: eniIP.ENI.VSwitchCIDR.ToRPC(),
GatewayIP: eniIP.ENI.GatewayIP.ToRPC(),
ServiceCIDR: n.k8s.GetServiceCIDR().ToRPC(),
},
ENIInfo: &rpc.ENIInfo{
MAC: eniIP.ENI.MAC,
Trunk: false,
},
Pod: &rpc.Pod{
Ingress: podinfo.TcIngress,
Egress: podinfo.TcEgress,
},
IfName: "",
ExtraRoutes: nil,
DefaultRoute: true,
})
}
err = defaultForNetConf(netConf)
if err != nil {
return nil, err
}
allocIPReply.Success = true
case podNetworkTypeVPCENI:
allocIPReply.IPType = rpc.IPType_TypeVPCENI
if n.ipamType == types.IPAMTypeCRD {
var netConfs []*rpc.NetConf
netConfs, err = n.exclusiveENIFromCRD(podinfo, true)
if err != nil {
return nil, err
}
netConf = append(netConf, netConfs...)
} else {
var eni *types.ENI
eni, err = n.allocateENI(networkContext, &oldRes)
if err != nil {
return nil, fmt.Errorf("error get allocated vpc ENI ip for: %+v, result: %+v", podinfo, err)
}
newRes := types.PodResources{
PodInfo: podinfo,
Resources: eni.ToResItems(),
NetNs: func(s string) *string {
return &s
}(r.Netns),
}
networkContext.resources = append(networkContext.resources, newRes.Resources...)
if n.eipResMgr != nil && podinfo.EipInfo.PodEip {
podinfo.PodIPs = eni.PrimaryIP
var eipRes *types.EIP
eipRes, err = n.allocateEIP(networkContext, &oldRes)
if err != nil {
return nil, fmt.Errorf("error get allocated eip for: %+v, result: %+v", podinfo, err)
}
eipResItem := eipRes.ToResItems()
newRes.Resources = append(newRes.Resources, eipResItem...)
networkContext.resources = append(networkContext.resources, eipResItem...)
}
err = n.resourceDB.Put(podInfoKey(podinfo.Namespace, podinfo.Name), newRes)
if err != nil {
return nil, errors.Wrapf(err, "error put resource into store")
}
netConf = append(netConf, &rpc.NetConf{
BasicInfo: &rpc.BasicInfo{
PodIP: eni.PrimaryIP.ToRPC(),
PodCIDR: eni.VSwitchCIDR.ToRPC(),
GatewayIP: eni.GatewayIP.ToRPC(),
ServiceCIDR: n.k8s.GetServiceCIDR().ToRPC(),
},
ENIInfo: &rpc.ENIInfo{
MAC: eni.MAC,
Trunk: false,
},
Pod: &rpc.Pod{
Ingress: podinfo.TcIngress,
Egress: podinfo.TcEgress,
},
IfName: "",
ExtraRoutes: nil,
DefaultRoute: true,
})
}
allocIPReply.Success = true
case podNetworkTypeVPCIP:
allocIPReply.IPType = rpc.IPType_TypeVPCIP
var vpcVeth *types.Veth
vpcVeth, err = n.allocateVeth(networkContext, &oldRes)
if err != nil {
return nil, fmt.Errorf("error get allocated vpc ip for: %+v, result: %+v", podinfo, err)
}
newRes := types.PodResources{
PodInfo: podinfo,
Resources: vpcVeth.ToResItems(),
NetNs: func(s string) *string {
return &s
}(r.Netns),
}
networkContext.resources = append(networkContext.resources, newRes.Resources...)
err = n.resourceDB.Put(podInfoKey(podinfo.Namespace, podinfo.Name), newRes)
if err != nil {
return nil, errors.Wrapf(err, "error put resource into store")
}
netConf = append(netConf, &rpc.NetConf{
BasicInfo: &rpc.BasicInfo{
PodIP: nil,
PodCIDR: n.k8s.GetNodeCidr().ToRPC(),
GatewayIP: nil,
ServiceCIDR: nil,
},
ENIInfo: nil,
Pod: &rpc.Pod{
Ingress: podinfo.TcIngress,
Egress: podinfo.TcEgress,
},
IfName: "",
ExtraRoutes: nil,
DefaultRoute: true,
})
allocIPReply.Success = true
default:
return nil, fmt.Errorf("not support pod network type")
}
// 4. grpc connection
if ctx.Err() != nil {
err = ctx.Err()
return nil, fmt.Errorf("error on grpc connection, %w", err)
}
allocIPReply.NetConfs = netConf
allocIPReply.EnableTrunking = n.enableTrunk
// 5. return allocate result
return allocIPReply, err
}
func (n *networkService) ReleaseIP(ctx context.Context, r *rpc.ReleaseIPRequest) (*rpc.ReleaseIPReply, error) {
serviceLog.WithFields(map[string]interface{}{
"pod": podInfoKey(r.K8SPodNamespace, r.K8SPodName),
"containerID": r.K8SPodInfraContainerId,
}).Info("release ip req")
n.RLock()
defer n.RUnlock()
var (
start = time.Now()
err error
)
defer func() {
metric.RPCLatency.WithLabelValues("ReleaseIP", fmt.Sprint(err != nil)).Observe(metric.MsSince(start))
}()
// 0. Get pod Info
podinfo, err := n.k8s.GetPod(r.K8SPodNamespace, r.K8SPodName)
if err != nil {
return nil, errors.Wrapf(err, "error get pod info for: %+v", r)
}
// 1. Init Context
netCtx := &networkContext{
Context: ctx,
resources: []types.ResourceItem{},
pod: podinfo,
k8sService: n.k8s,
}
releaseReply := &rpc.ReleaseIPReply{
Success: true,
IPv4: n.ipFamily.IPv4,
IPv6: n.ipFamily.IPv6,
}
defer func() {
if err != nil {
netCtx.Log().Errorf("release result with error, %+v", err)
} else {
netCtx.Log().Infof("release result: %+v", releaseReply)
}
}()
oldRes, err := n.getPodResource(podinfo)
if err != nil {
return nil, err
}
if !n.verifyPodNetworkType(podinfo.PodNetworkType) {
netCtx.Log().Warnf("unexpect pod network type release, maybe daemon mode changed: %+v", podinfo.PodNetworkType)
return releaseReply, nil
}
for _, res := range oldRes.Resources {
//record old resource for pod
netCtx.resources = append(netCtx.resources, res)
mgr := n.getResourceManagerForRes(res.Type)
if mgr == nil {
netCtx.Log().Warnf("error cleanup allocated network resource %s, %s: %v", res.ID, res.Type, err)
continue
}
if podinfo.IPStickTime == 0 {
if err = mgr.Release(netCtx, res); err != nil && err != pool.ErrInvalidState {
return nil, errors.Wrapf(err, "error release request network resource for: %+v", r)
}
if err = n.deletePodResource(podinfo); err != nil {
return nil, errors.Wrapf(err, "error delete resource from db: %+v", r)
}
}
}
if netCtx.Err() != nil {
err = ctx.Err()
return nil, fmt.Errorf("error on grpc connection, %w", err)
}
return releaseReply, nil
}
func (n *networkService) GetIPInfo(ctx context.Context, r *rpc.GetInfoRequest) (*rpc.GetInfoReply, error) {
serviceLog.Debugf("GetIPInfo request: %+v", r)
// 0. Get pod Info
podinfo, err := n.k8s.GetPod(r.K8SPodNamespace, r.K8SPodName)
if err != nil {
return nil, errors.Wrapf(err, "error get pod info for: %+v", r)
}
if !n.verifyPodNetworkType(podinfo.PodNetworkType) {
return nil, fmt.Errorf("unexpect pod network type get info, maybe daemon mode changed: %+v", podinfo.PodNetworkType)
}
// 1. Init Context
networkContext := &networkContext{
Context: ctx,
resources: []types.ResourceItem{},
pod: podinfo,
k8sService: n.k8s,
}
getIPInfoResult := &rpc.GetInfoReply{IPv4: n.ipFamily.IPv4, IPv6: n.ipFamily.IPv6}
defer func() {
networkContext.Log().Debugf("getIpInfo result: %+v", getIPInfoResult)
}()
n.RLock()
podRes, err := n.getPodResource(podinfo)
n.RUnlock()
if err != nil {
networkContext.Log().Errorf("failed to get pod info : %+v", err)
return getIPInfoResult, err
}
var netConf []*rpc.NetConf
// 2. return network info for pod
switch podinfo.PodNetworkType {
case podNetworkTypeENIMultiIP:
getIPInfoResult.IPType = rpc.IPType_TypeENIMultiIP
netConfs, err2 := n.multiIPFromCRD(podinfo, false)
if err != nil {
if k8sErr.IsNotFound(err2) {
getIPInfoResult.Error = rpc.Error_ErrCRDNotFound
}
return getIPInfoResult, nil
}
netConf = append(netConf, netConfs...)
defaultIfSet := false
for _, cfg := range netConf {
if defaultIf(cfg.IfName) {
defaultIfSet = true
}
}
if !defaultIfSet {
resItems := podRes.GetResourceItemByType(types.ResourceTypeENIIP)
if len(resItems) > 0 {
// only have one
res, err := n.eniIPResMgr.Stat(networkContext, resItems[0].ID)
if err == nil {
eniIP := res.(*types.ENIIP)
netConf = append(netConf, &rpc.NetConf{
BasicInfo: &rpc.BasicInfo{
PodIP: eniIP.IPSet.ToRPC(),
PodCIDR: eniIP.ENI.VSwitchCIDR.ToRPC(),
GatewayIP: eniIP.ENI.GatewayIP.ToRPC(),
ServiceCIDR: n.k8s.GetServiceCIDR().ToRPC(),
},
ENIInfo: &rpc.ENIInfo{
MAC: eniIP.ENI.MAC,
Trunk: false,
},
Pod: &rpc.Pod{
Ingress: podinfo.TcIngress,
Egress: podinfo.TcEgress,
},
IfName: "",
ExtraRoutes: nil,
})
} else {
serviceLog.Debugf("failed to get res stat %s", resItems[0].ID)
}
}
}
err = defaultForNetConf(netConf)
if err != nil {
return getIPInfoResult, err
}
case podNetworkTypeVPCIP:
getIPInfoResult.IPType = rpc.IPType_TypeVPCIP
netConf = append(netConf, &rpc.NetConf{
BasicInfo: &rpc.BasicInfo{
PodIP: nil,
PodCIDR: n.k8s.GetNodeCidr().ToRPC(),
GatewayIP: nil,
ServiceCIDR: nil,
},
Pod: &rpc.Pod{
Ingress: podinfo.TcIngress,
Egress: podinfo.TcEgress,
},
DefaultRoute: true,
})
case podNetworkTypeVPCENI:
getIPInfoResult.IPType = rpc.IPType_TypeVPCENI
if n.ipamType == types.IPAMTypeCRD {
netConfs, err2 := n.exclusiveENIFromCRD(podinfo, false)
if err2 != nil {
if k8sErr.IsNotFound(err2) {
getIPInfoResult.Error = rpc.Error_ErrCRDNotFound
}
return getIPInfoResult, nil
}
netConf = append(netConf, netConfs...)
} else {
resItems := podRes.GetResourceItemByType(types.ResourceTypeENI)
if len(resItems) > 0 {
// only have one
res, err := n.eniResMgr.Stat(networkContext, resItems[0].ID)
if err == nil {
eni := res.(*types.ENI)
netConf = append(netConf, &rpc.NetConf{
BasicInfo: &rpc.BasicInfo{
PodIP: eni.PrimaryIP.ToRPC(),
PodCIDR: eni.VSwitchCIDR.ToRPC(),
GatewayIP: eni.GatewayIP.ToRPC(),
ServiceCIDR: n.k8s.GetServiceCIDR().ToRPC(),
},
ENIInfo: &rpc.ENIInfo{
MAC: eni.MAC,
Trunk: podinfo.PodENI && n.enableTrunk && eni.Trunk,
},
Pod: &rpc.Pod{
Ingress: podinfo.TcIngress,
Egress: podinfo.TcEgress,
},
IfName: "",
ExtraRoutes: nil,
DefaultRoute: true,
})
} else {
serviceLog.Debugf("failed to get res stat %s", resItems[0].ID)
}
}
}
default:
return getIPInfoResult, errors.Errorf("unknown or unsupport network type for: %v", r)
}
getIPInfoResult.NetConfs = netConf
getIPInfoResult.EnableTrunking = n.enableTrunk
return getIPInfoResult, nil
}
func (n *networkService) RecordEvent(_ context.Context, r *rpc.EventRequest) (*rpc.EventReply, error) {
eventType := eventTypeNormal
if r.EventType == rpc.EventType_EventTypeWarning {
eventType = eventTypeWarning
}
reply := &rpc.EventReply{
Succeed: true,
Error: "",
}
if r.EventTarget == rpc.EventTarget_EventTargetNode { // Node
n.k8s.RecordNodeEvent(eventType, r.Reason, r.Message)
return reply, nil
}
// Pod
err := n.k8s.RecordPodEvent(r.K8SPodName, r.K8SPodNamespace, eventType, r.Reason, r.Message)
if err != nil {
reply.Succeed = false
reply.Error = err.Error()
return reply, err
}
return reply, nil
}
func (n *networkService) verifyPodNetworkType(podNetworkMode string) bool {
return (n.daemonMode == daemonModeVPC && //vpc
(podNetworkMode == podNetworkTypeVPCENI || podNetworkMode == podNetworkTypeVPCIP)) ||
// eni-multi-ip
(n.daemonMode == daemonModeENIMultiIP && podNetworkMode == podNetworkTypeENIMultiIP) ||
// eni-only
(n.daemonMode == daemonModeENIOnly && podNetworkMode == podNetworkTypeVPCENI)
}
func (n *networkService) startGarbageCollectionLoop() {
// period do network resource gc
gcTicker := time.NewTicker(gcPeriod)
go func() {
for range gcTicker.C {
serviceLog.Debugf("do resource gc on node")
n.Lock()
pods, err := n.k8s.GetLocalPods()
if err != nil {
serviceLog.Warnf("error get local pods for gc")
n.Unlock()
continue
}
podKeyMap := make(map[string]bool)
for _, pod := range pods {
if !pod.SandboxExited {
podKeyMap[podInfoKey(pod.Namespace, pod.Name)] = true
}
}
var (
inUseSet = make(map[string]map[string]types.ResourceItem)
expireSet = make(map[string]map[string]types.ResourceItem)
relateExpireList = make([]string, 0)
)
resRelateList, err := n.resourceDB.List()
if err != nil {
serviceLog.Warnf("error list resource db for gc")
n.Unlock()
continue
}
for _, resRelateObj := range resRelateList {
resRelate := resRelateObj.(types.PodResources)
_, podExist := podKeyMap[podInfoKey(resRelate.PodInfo.Namespace, resRelate.PodInfo.Name)]
if !podExist {
if resRelate.PodInfo.IPStickTime != 0 {
// delay resource garbage collection for sticky ip
resRelate.PodInfo.IPStickTime = 0
if err = n.resourceDB.Put(podInfoKey(resRelate.PodInfo.Namespace, resRelate.PodInfo.Name),
resRelate); err != nil {
serviceLog.Warnf("error store pod info to resource db")
}
podExist = true
} else {
relateExpireList = append(relateExpireList, podInfoKey(resRelate.PodInfo.Namespace, resRelate.PodInfo.Name))
}
}
for _, res := range resRelate.Resources {
if _, ok := inUseSet[res.Type]; !ok {
inUseSet[res.Type] = make(map[string]types.ResourceItem)
expireSet[res.Type] = make(map[string]types.ResourceItem)
}
// already in use by others
if _, ok := inUseSet[res.Type][res.ID]; ok {
continue
}
if podExist {
// remove resource from expirelist
delete(expireSet[res.Type], res.ID)
inUseSet[res.Type][res.ID] = res
} else {
if _, ok := inUseSet[res.Type][res.ID]; !ok {
expireSet[res.Type][res.ID] = res
}
}
}
}
gcDone := true
for mgrType := range inUseSet {
mgr, ok := n.mgrForResource[mgrType]
if ok {
serviceLog.Debugf("start garbage collection for %v, list: %+v， %+v", mgrType, inUseSet[mgrType], expireSet[mgrType])
err = mgr.GarbageCollection(inUseSet[mgrType], expireSet[mgrType])
if err != nil {
serviceLog.Warnf("error do garbage collection for %+v, inuse: %v, expire: %v, err: %v", mgrType, inUseSet[mgrType], expireSet[mgrType], err)
gcDone = false
}
}
}
if gcDone {
func() {
resMap, ok := expireSet[types.ResourceTypeENIIP]
if !ok {
return
}
for resID := range resMap {
// try clean ip rules
list := strings.SplitAfterN(resID, ".", 2)
if len(list) <= 1 {
serviceLog.Debugf("skip gc res id %s", resID)
continue
}
serviceLog.Debugf("checking ip %s", list[1])
_, addr, err := net.ParseCIDR(fmt.Sprintf("%s/32", list[1]))
if err != nil {
serviceLog.Errorf("failed parse ip %s", list[1])
return
}
// try clean all
err = link.DeleteIPRulesByIP(addr)
if err != nil {
serviceLog.Errorf("failed release ip rules %v", err)
}
err = link.DeleteRouteByIP(addr)
if err != nil {
serviceLog.Errorf("failed delete route %v", err)
}
}
}()
for _, relate := range relateExpireList {
err = n.resourceDB.Delete(relate)
if err != nil {
serviceLog.Warnf("error delete resource db relation: %v", err)
}
}
}
n.Unlock()
}
}()
}
func (n *networkService) startPeriodCheck() {
// check pool
func() {
serviceLog.Debugf("compare poll with metadata")
podMapping, err := n.GetResourceMapping()
if err != nil {
serviceLog.Error(err)
return
}
for _, res := range podMapping {
if res.Valid {
continue
}
if res.Name == "" || res.Namespace == "" {
// just log
serviceLog.Warnf("found resource invalid %s %s", res.LocalResID, res.RemoteResID)
} else {
_ = tracing.RecordPodEvent(res.Name, res.Namespace, corev1.EventTypeWarning, "ResourceInvalid", fmt.Sprintf("resource %s", res.LocalResID))
}
}
}()
// call CNI CHECK, make sure all dev is ok
func() {
serviceLog.Debugf("call CNI CHECK")
defer func() {
serviceLog.Debugf("call CNI CHECK end")
}()
n.RLock()
podResList, err := n.resourceDB.List()
n.RUnlock()
if err != nil {
serviceLog.Error(err)
return
}
ff, err := ioutil.ReadFile(terwayCNIConf)
if err != nil {
serviceLog.Error(err)
return
}
for _, v := range podResList {
res := v.(types.PodResources)
if res.NetNs == nil {
continue
}
serviceLog.Debugf("checking pod name %s", res.PodInfo.Name)
cniCfg := libcni.NewCNIConfig([]string{n.cniBinPath}, nil)
func() {
ctx, cancel := context.WithTimeout(context.Background(), cniExecTimeout)
defer cancel()
err := cniCfg.CheckNetwork(ctx, &libcni.NetworkConfig{
Network: &containertypes.NetConf{
CNIVersion: "0.4.0",
Name: "terway",
Type: "terway",
},
Bytes: ff,
}, &libcni.RuntimeConf{
ContainerID: "fake", // must provide
NetNS: filepath.Join("/proc/1/root/", *res.NetNs),
IfName: "eth0",
Args: [][2]string{
{"K8S_POD_NAME", res.PodInfo.Name},
{"K8S_POD_NAMESPACE", res.PodInfo.Namespace},
},
})
if err != nil {
serviceLog.Error(err)
return
}
}()
}
}()
}
// requestCRD get crd from api
// note: need tolerate crd is not exist, so contained can del pod normally
func (n *networkService) requestCRD(podInfo *types.PodInfo, waitReady bool) (*podENITypes.PodENI, error) {
if n.ipamType == types.IPAMTypeCRD || podInfo.PodENI && n.enableTrunk {
var podENI *podENITypes.PodENI
var err error
if waitReady {
podENI, err = n.k8s.WaitPodENIInfo(podInfo)
} else {
podENI, err = n.k8s.GetPodENIInfo(podInfo)
}
if err != nil {
return nil, err
}
if len(podENI.Spec.Allocations) <= 0 {
return nil, fmt.Errorf("podENI has no allocation info")
}
return podENI, nil
}
return nil, nil
}
func (n *networkService) multiIPFromCRD(podInfo *types.PodInfo, waitReady bool) ([]*rpc.NetConf, error) {
var netConf []*rpc.NetConf
var nodeTrunkENI *types.ENI
podEni, err := n.requestCRD(podInfo, waitReady)
if err != nil {
return nil, fmt.Errorf("error wait pod eni info, %w", err)
}
if podEni == nil {
return nil, nil
}
nodeTrunkENI = n.eniIPResMgr.(*eniIPResourceManager).trunkENI
if nodeTrunkENI == nil || nodeTrunkENI.ID != podEni.Status.TrunkENIID {
return nil, fmt.Errorf("pod status eni parent not match instance trunk eni")
}
// for now only ipvlan is supported
// call api to get eni info
for _, alloc := range podEni.Spec.Allocations {
podIP := &rpc.IPSet{}
cidr := &rpc.IPSet{}
gw := &rpc.IPSet{}
if alloc.IPv4 != "" {
podIP.IPv4 = alloc.IPv4
cidr.IPv4 = alloc.IPv4CIDR
gw.IPv4 = terwayIP.DeriveGatewayIP(alloc.IPv4CIDR)
if cidr.IPv4 == "" || gw.IPv4 == "" {
return nil, fmt.Errorf("empty cidr or gateway")
}
}
if alloc.IPv6 != "" {
podIP.IPv6 = alloc.IPv6
cidr.IPv6 = alloc.IPv6CIDR
gw.IPv6 = terwayIP.DeriveGatewayIP(alloc.IPv6CIDR)
if cidr.IPv6 == "" || gw.IPv6 == "" {
return nil, fmt.Errorf("empty cidr or gateway")
}
}
eniInfo := &rpc.ENIInfo{
MAC: alloc.ENI.MAC,
Trunk: true,
}
eniInfo.MAC = nodeTrunkENI.MAC // set trunk eni mac