mirror of
https://github.com/cloudnativelabs/kube-router.git
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ca97d0d6eb
where nodes are in different subnet. With tunneling disabled its expected that default gateway has learned the pod CIDR's allocated for all the nodes and can route the pod-to-pod traffic across nodes in different subnets Fixes #119
93 lines
4.5 KiB
Go
Executable File
93 lines
4.5 KiB
Go
Executable File
package options
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import (
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"time"
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"github.com/spf13/pflag"
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)
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type KubeRouterConfig struct {
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HelpRequested bool
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Kubeconfig string
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Master string
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ConfigSyncPeriod time.Duration
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CleanupConfig bool
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IPTablesSyncPeriod time.Duration
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IpvsSyncPeriod time.Duration
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RoutesSyncPeriod time.Duration
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RunServiceProxy bool
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RunFirewall bool
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RunRouter bool
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MasqueradeAll bool
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ClusterCIDR string
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EnablePodEgress bool
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HostnameOverride string
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AdvertiseClusterIp bool
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PeerRouter string
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ClusterAsn string
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PeerAsn string
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FullMeshMode bool
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GlobalHairpinMode bool
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NodePortBindOnAllIp bool
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EnableOverlay bool
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}
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func NewKubeRouterConfig() *KubeRouterConfig {
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return &KubeRouterConfig{ConfigSyncPeriod: 1 * time.Minute,
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IpvsSyncPeriod: 1 * time.Minute,
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IPTablesSyncPeriod: 1 * time.Minute,
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RoutesSyncPeriod: 1 * time.Minute,
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EnableOverlay: true,
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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.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.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.ConfigSyncPeriod, "config-sync-period", s.ConfigSyncPeriod,
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"The delay between apiserver configuration synchronizations (e.g. '5s', '1m'). Must be greater than 0.")
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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.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 to the RIB and advertise to peers.")
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fs.StringVar(&s.PeerRouter, "peer-router", s.PeerRouter,
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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.StringVar(&s.ClusterAsn, "cluster-asn", s.ClusterAsn,
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"ASN number under which cluster nodes will run iBGP.")
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fs.StringVar(&s.PeerAsn, "peer-asn", s.PeerAsn,
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"ASN number of the BGP peer to which cluster nodes will advertise cluster ip and node's pod cidr.")
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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.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 iptable 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 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 infrastrcture is expected to route traffic for pod-to-pod networking across nodes in different subnets")
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}
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