mirror of
https://github.com/cloudnativelabs/kube-router.git
synced 2025-11-09 23:21:03 +01:00
1c184624d1
The bgp-holdtime function parameter of setting holdtime is added to adjust the holdtime of BGP negotiation with the connected network devices.
194 lines
11 KiB
Go
194 lines
11 KiB
Go
package options
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import (
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"net"
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"time"
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"strconv"
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"github.com/spf13/pflag"
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)
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const DEFAULT_BGP_PORT = 179
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const DEFAULT_BGP_HOLDTIME time.Duration = 90 * time.Second
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type KubeRouterConfig struct {
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AdvertiseClusterIp bool
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AdvertiseExternalIp bool
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AdvertiseNodePodCidr bool
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AdvertiseLoadBalancerIp bool
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BGPGracefulRestart bool
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BGPGracefulRestartTime time.Duration
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BGPGracefulRestartDeferralTime time.Duration
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BGPHoldtime time.Duration
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BGPPort uint16
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CacheSyncTimeout time.Duration
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CleanupConfig bool
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ClusterAsn uint
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ClusterCIDR string
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ClusterIPCIDR string
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NodePortRange string
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DisableSrcDstCheck bool
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EnableCNI bool
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EnableiBGP bool
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EnableOverlay bool
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EnablePodEgress bool
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EnablePprof bool
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ExcludedCidrs []string
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FullMeshMode bool
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OverlayType string
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GlobalHairpinMode bool
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HealthPort uint16
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HelpRequested bool
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HostnameOverride string
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IPTablesSyncPeriod time.Duration
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IpvsSyncPeriod time.Duration
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IpvsGracefulPeriod time.Duration
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IpvsGracefulTermination bool
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IpvsPermitAll bool
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Kubeconfig string
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MasqueradeAll bool
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Master string
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MetricsEnabled bool
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MetricsPath string
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MetricsPort uint16
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NodePortBindOnAllIp bool
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OverrideNextHop bool
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PeerASNs []uint
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PeerMultihopTtl uint8
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PeerPasswords []string
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PeerPorts []uint
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PeerRouters []net.IP
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RouterId string
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RoutesSyncPeriod time.Duration
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RunFirewall bool
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RunRouter bool
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RunServiceProxy bool
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Version bool
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VLevel string
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// FullMeshPassword string
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}
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func NewKubeRouterConfig() *KubeRouterConfig {
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return &KubeRouterConfig{
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CacheSyncTimeout: 1 * time.Minute,
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IpvsSyncPeriod: 5 * time.Minute,
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IPTablesSyncPeriod: 5 * time.Minute,
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IpvsGracefulPeriod: 30 * time.Second,
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RoutesSyncPeriod: 5 * time.Minute,
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BGPGracefulRestartTime: 90 * time.Second,
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BGPHoldtime: 90 * time.Second,
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BGPGracefulRestartDeferralTime: 360 * time.Second,
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EnableOverlay: true,
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OverlayType: "subnet",
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ClusterIPCIDR: "10.96.0.0/12",
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NodePortRange: "30000:32767",
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}
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}
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func (s *KubeRouterConfig) AddFlags(fs *pflag.FlagSet) {
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fs.BoolVarP(&s.HelpRequested, "help", "h", false,
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"Print usage information.")
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fs.BoolVarP(&s.Version, "version", "V", false,
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"Print version information.")
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fs.DurationVar(&s.CacheSyncTimeout, "cache-sync-timeout", s.CacheSyncTimeout,
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"The timeout for cache synchronization (e.g. '5s', '1m'). Must be greater than 0.")
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fs.BoolVar(&s.RunServiceProxy, "run-service-proxy", true,
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"Enables Service Proxy -- sets up IPVS for Kubernetes Services.")
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fs.BoolVar(&s.RunFirewall, "run-firewall", true,
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"Enables Network Policy -- sets up iptables to provide ingress firewall for pods.")
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fs.BoolVar(&s.RunRouter, "run-router", true,
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"Enables Pod Networking -- Advertises and learns the routes to Pods via iBGP.")
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fs.StringVar(&s.Master, "master", s.Master,
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"The address of the Kubernetes API server (overrides any value in kubeconfig).")
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fs.StringVar(&s.Kubeconfig, "kubeconfig", s.Kubeconfig,
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"Path to kubeconfig file with authorization information (the master location is set by the master flag).")
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fs.BoolVar(&s.CleanupConfig, "cleanup-config", false,
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"Cleanup iptables rules, ipvs, ipset configuration and exit.")
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fs.BoolVar(&s.MasqueradeAll, "masquerade-all", false,
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"SNAT all traffic to cluster IP/node port.")
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fs.StringVar(&s.ClusterCIDR, "cluster-cidr", s.ClusterCIDR,
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"CIDR range of pods in the cluster. It is used to identify traffic originating from and destinated to pods.")
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fs.StringSliceVar(&s.ExcludedCidrs, "excluded-cidrs", s.ExcludedCidrs,
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"Excluded CIDRs are used to exclude IPVS rules from deletion.")
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fs.StringVar(&s.ClusterIPCIDR, "service-cluster-ip-range", s.ClusterIPCIDR,
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"CIDR value from which service cluster IPs are assigned. Default: 10.96.0.0/12")
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fs.StringVar(&s.NodePortRange, "service-node-port-range", s.NodePortRange,
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"NodePort range. Default: 30000-32767")
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fs.BoolVar(&s.EnablePodEgress, "enable-pod-egress", true,
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"SNAT traffic from Pods to destinations outside the cluster.")
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fs.DurationVar(&s.IPTablesSyncPeriod, "iptables-sync-period", s.IPTablesSyncPeriod,
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"The delay between iptables rule synchronizations (e.g. '5s', '1m'). Must be greater than 0.")
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fs.DurationVar(&s.IpvsSyncPeriod, "ipvs-sync-period", s.IpvsSyncPeriod,
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"The delay between ipvs config synchronizations (e.g. '5s', '1m', '2h22m'). Must be greater than 0.")
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fs.DurationVar(&s.IpvsGracefulPeriod, "ipvs-graceful-period", s.IpvsGracefulPeriod,
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"The graceful period before removing destinations from IPVS services (e.g. '5s', '1m', '2h22m'). Must be greater than 0.")
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fs.BoolVar(&s.IpvsGracefulTermination, "ipvs-graceful-termination", false,
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"Enables the experimental IPVS graceful terminaton capability")
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fs.BoolVar(&s.IpvsPermitAll, "ipvs-permit-all", true,
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"Enables rule to accept all incoming traffic to service VIP's on the node.")
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fs.DurationVar(&s.RoutesSyncPeriod, "routes-sync-period", s.RoutesSyncPeriod,
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"The delay between route updates and advertisements (e.g. '5s', '1m', '2h22m'). Must be greater than 0.")
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fs.BoolVar(&s.AdvertiseClusterIp, "advertise-cluster-ip", false,
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"Add Cluster IP of the service to the RIB so that it gets advertises to the BGP peers.")
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fs.BoolVar(&s.AdvertiseExternalIp, "advertise-external-ip", false,
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"Add External IP of service to the RIB so that it gets advertised to the BGP peers.")
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fs.BoolVar(&s.AdvertiseLoadBalancerIp, "advertise-loadbalancer-ip", false,
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"Add LoadbBalancer IP of service status as set by the LB provider to the RIB so that it gets advertised to the BGP peers.")
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fs.BoolVar(&s.AdvertiseNodePodCidr, "advertise-pod-cidr", true,
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"Add Node's POD cidr to the RIB so that it gets advertised to the BGP peers.")
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fs.IPSliceVar(&s.PeerRouters, "peer-router-ips", s.PeerRouters,
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"The ip address of the external router to which all nodes will peer and advertise the cluster ip and pod cidr's.")
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fs.UintSliceVar(&s.PeerPorts, "peer-router-ports", s.PeerPorts,
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"The remote port of the external BGP to which all nodes will peer. If not set, default BGP port ("+strconv.Itoa(DEFAULT_BGP_PORT)+") will be used.")
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fs.UintVar(&s.ClusterAsn, "cluster-asn", s.ClusterAsn,
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"ASN number under which cluster nodes will run iBGP.")
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fs.UintSliceVar(&s.PeerASNs, "peer-router-asns", s.PeerASNs,
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"ASN numbers of the BGP peer to which cluster nodes will advertise cluster ip and node's pod cidr.")
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fs.Uint8Var(&s.PeerMultihopTtl, "peer-router-multihop-ttl", s.PeerMultihopTtl,
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"Enable eBGP multihop supports -- sets multihop-ttl. (Relevant only if ttl >= 2)")
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fs.BoolVar(&s.FullMeshMode, "nodes-full-mesh", true,
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"Each node in the cluster will setup BGP peering with rest of the nodes.")
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fs.BoolVar(&s.BGPGracefulRestart, "bgp-graceful-restart", false,
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"Enables the BGP Graceful Restart capability so that routes are preserved on unexpected restarts")
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fs.DurationVar(&s.BGPGracefulRestartTime, "bgp-graceful-restart-time", s.BGPGracefulRestartTime,
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"BGP Graceful restart time according to RFC4724 3, maximum 4095s.")
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fs.DurationVar(&s.BGPGracefulRestartDeferralTime, "bgp-graceful-restart-deferral-time", s.BGPGracefulRestartDeferralTime,
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"BGP Graceful restart deferral time according to RFC4724 4.1, maximum 18h.")
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fs.DurationVar(&s.BGPHoldtime, "bgp-holdtime", DEFAULT_BGP_HOLDTIME,
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"This parameter is mainly used to modify the holdtime declared to BGP peer. When Kube-router goes down abnormally, the local saving time of BGP route will be affected.Holdtime must be in the range 3s to 18h12m16s.")
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fs.Uint16Var(&s.BGPPort, "bgp-port", DEFAULT_BGP_PORT,
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"The port open for incoming BGP connections and to use for connecting with other BGP peers.")
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fs.StringVar(&s.RouterId, "router-id", "", "BGP router-id. Must be specified in a ipv6 only cluster.")
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fs.BoolVar(&s.EnableCNI, "enable-cni", true,
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"Enable CNI plugin. Disable if you want to use kube-router features alongside another CNI plugin.")
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fs.BoolVar(&s.EnableiBGP, "enable-ibgp", true,
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"Enables peering with nodes with the same ASN, if disabled will only peer with external BGP peers")
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fs.StringVar(&s.HostnameOverride, "hostname-override", s.HostnameOverride,
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"Overrides the NodeName of the node. Set this if kube-router is unable to determine your NodeName automatically.")
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fs.BoolVar(&s.GlobalHairpinMode, "hairpin-mode", false,
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"Add iptables rules for every Service Endpoint to support hairpin traffic.")
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fs.BoolVar(&s.NodePortBindOnAllIp, "nodeport-bindon-all-ip", false,
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"For service of NodePort type create IPVS service that listens on all IP's of the node.")
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fs.BoolVar(&s.EnableOverlay, "enable-overlay", true,
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"When enable-overlay is set to true, IP-in-IP tunneling is used for pod-to-pod networking across nodes in different subnets. "+
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"When set to false no tunneling is used and routing infrastructure is expected to route traffic for pod-to-pod networking across nodes in different subnets")
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fs.StringVar(&s.OverlayType, "overlay-type", s.OverlayType,
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"Possible values: subnet,full - "+
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"When set to \"subnet\", the default, default \"--enable-overlay=true\" behavior is used. "+
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"When set to \"full\", it changes \"--enable-overlay=true\" default behavior so that IP-in-IP tunneling is used for pod-to-pod networking across nodes regardless of the subnet the nodes are in.")
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fs.StringSliceVar(&s.PeerPasswords, "peer-router-passwords", s.PeerPasswords,
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"Password for authenticating against the BGP peer defined with \"--peer-router-ips\".")
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fs.BoolVar(&s.EnablePprof, "enable-pprof", false,
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"Enables pprof for debugging performance and memory leak issues.")
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fs.Uint16Var(&s.MetricsPort, "metrics-port", 0, "Prometheus metrics port, (Default 0, Disabled)")
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fs.StringVar(&s.MetricsPath, "metrics-path", "/metrics", "Prometheus metrics path")
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// fs.StringVar(&s.FullMeshPassword, "nodes-full-mesh-password", s.FullMeshPassword,
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// "Password that cluster-node BGP servers will use to authenticate one another when \"--nodes-full-mesh\" is set.")
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fs.StringVarP(&s.VLevel, "v", "v", "0", "log level for V logs")
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fs.Uint16Var(&s.HealthPort, "health-port", 20244, "Health check port, 0 = Disabled")
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fs.BoolVar(&s.OverrideNextHop, "override-nexthop", false, "Override the next-hop in bgp routes sent to peers with the local ip.")
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fs.BoolVar(&s.DisableSrcDstCheck, "disable-source-dest-check", true,
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"Disable the source-dest-check attribute for AWS EC2 instances. When this option is false, it must be set some other way.")
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}
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