170 lines
11 KiB
Go
170 lines
11 KiB
Go
package options
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import (
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"fmt"
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"strings"
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"time"
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"github.com/spf13/pflag"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/tools/leaderelection/resourcelock"
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componentbaseconfig "k8s.io/component-base/config"
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"github.com/karmada-io/karmada/pkg/features"
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"github.com/karmada-io/karmada/pkg/sharedcli/ratelimiterflag"
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"github.com/karmada-io/karmada/pkg/util"
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)
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const (
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defaultBindAddress = "0.0.0.0"
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defaultPort = 10357
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)
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// Options contains everything necessary to create and run controller-manager.
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type Options struct {
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// Controllers is the list of controllers to enable or disable
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// '*' means "all enabled by default controllers"
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// 'foo' means "enable 'foo'"
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// '-foo' means "disable 'foo'"
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// first item for a particular name wins
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Controllers []string
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// LeaderElection defines the configuration of leader election client.
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LeaderElection componentbaseconfig.LeaderElectionConfiguration
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// BindAddress is the IP address on which to listen for the --secure-port port.
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BindAddress string
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// SecurePort is the port that the the server serves at.
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// Note: We hope support https in the future once controller-runtime provides the functionality.
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SecurePort int
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// ClusterStatusUpdateFrequency is the frequency that controller computes and report cluster status.
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// It must work with ClusterMonitorGracePeriod(--cluster-monitor-grace-period) in karmada-controller-manager.
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ClusterStatusUpdateFrequency metav1.Duration
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// FailoverEvictionTimeout is the grace period for deleting scheduling result on failed clusters.
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FailoverEvictionTimeout metav1.Duration
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// ClusterLeaseDuration is a duration that candidates for a lease need to wait to force acquire it.
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// This is measure against time of last observed lease RenewTime.
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ClusterLeaseDuration metav1.Duration
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// ClusterLeaseRenewIntervalFraction is a fraction coordinated with ClusterLeaseDuration that
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// how long the current holder of a lease has last updated the lease.
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ClusterLeaseRenewIntervalFraction float64
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// ClusterMonitorPeriod represents cluster-controller monitoring period, i.e. how often does
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// cluster-controller check cluster health signal posted from cluster-status-controller.
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// This value should be lower than ClusterMonitorGracePeriod.
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ClusterMonitorPeriod metav1.Duration
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// ClusterMonitorGracePeriod represents the grace period after last cluster health probe time.
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// If it doesn't receive update for this amount of time, it will start posting
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// "ClusterReady==ConditionUnknown".
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ClusterMonitorGracePeriod metav1.Duration
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// When cluster is just created, e.g. agent bootstrap or cluster join, we give a longer grace period.
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ClusterStartupGracePeriod metav1.Duration
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// SkippedPropagatingAPIs indicates comma separated resources that should be skipped for propagating.
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SkippedPropagatingAPIs string
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// SkippedPropagatingNamespaces is a list of namespaces that will be skipped for propagating.
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SkippedPropagatingNamespaces []string
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// ClusterAPIContext is the name of the cluster context in cluster-api management cluster KUBECONFIG file.
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// Default value is the current-context.
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ClusterAPIContext string
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// ClusterAPIKubeconfig holds the cluster-api management cluster KUBECONFIG file path.
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ClusterAPIKubeconfig string
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// ClusterAPIQPS is the QPS to use while talking with cluster kube-apiserver.
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ClusterAPIQPS float32
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// ClusterAPIBurst is the burst to allow while talking with cluster kube-apiserver.
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ClusterAPIBurst int
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// KubeAPIQPS is the QPS to use while talking with karmada-apiserver.
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KubeAPIQPS float32
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// KubeAPIBurst is the burst to allow while talking with karmada-apiserver.
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KubeAPIBurst int
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// ClusterCacheSyncTimeout is the timeout period waiting for cluster cache to sync
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ClusterCacheSyncTimeout metav1.Duration
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// ResyncPeriod is the base frequency the informers are resynced.
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// Defaults to 0, which means the created informer will never do resyncs.
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ResyncPeriod metav1.Duration
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// MetricsBindAddress is the TCP address that the controller should bind to
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// for serving prometheus metrics.
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// It can be set to "0" to disable the metrics serving.
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// Defaults to ":8080".
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MetricsBindAddress string
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// concurrentClusterSyncs is the number of cluster objects that are
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// allowed to sync concurrently.
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ConcurrentClusterSyncs int
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// ConcurrentClusterResourceBindingSyncs is the number of clusterresourcebinding objects that are
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// allowed to sync concurrently.
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ConcurrentClusterResourceBindingSyncs int
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// ConcurrentWorkSyncs is the number of Work objects that are
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// allowed to sync concurrently.
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ConcurrentWorkSyncs int
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// ConcurrentResourceBindingSyncs is the number of resourcebinding objects that are
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// allowed to sync concurrently.
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ConcurrentResourceBindingSyncs int
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// ConcurrentNamespaceSyncs is the number of Namespace objects that are
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// allowed to sync concurrently.
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ConcurrentNamespaceSyncs int
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// ConcurrentResourceTemplateSyncs is the number of resource templates that are allowed to sync concurrently.
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ConcurrentResourceTemplateSyncs int
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RateLimiterOpts ratelimiterflag.Options
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}
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// NewOptions builds an empty options.
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func NewOptions() *Options {
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return &Options{
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LeaderElection: componentbaseconfig.LeaderElectionConfiguration{
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LeaderElect: true,
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ResourceLock: resourcelock.LeasesResourceLock,
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ResourceNamespace: util.NamespaceKarmadaSystem,
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ResourceName: "karmada-controller-manager",
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},
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}
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}
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// AddFlags adds flags to the specified FlagSet.
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func (o *Options) AddFlags(flags *pflag.FlagSet, allControllers, disabledByDefaultControllers []string) {
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flags.StringSliceVar(&o.Controllers, "controllers", []string{"*"}, fmt.Sprintf(
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"A list of controllers to enable. '*' enables all on-by-default controllers, 'foo' enables the controller named 'foo', '-foo' disables the controller named 'foo'. \nAll controllers: %s.\nDisabled-by-default controllers: %s",
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strings.Join(allControllers, ", "), strings.Join(disabledByDefaultControllers, ", "),
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))
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flags.StringVar(&o.BindAddress, "bind-address", defaultBindAddress,
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"The IP address on which to listen for the --secure-port port.")
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flags.IntVar(&o.SecurePort, "secure-port", defaultPort,
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"The secure port on which to serve HTTPS.")
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flags.DurationVar(&o.ClusterStatusUpdateFrequency.Duration, "cluster-status-update-frequency", 10*time.Second,
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"Specifies how often karmada-controller-manager posts cluster status to karmada-apiserver.")
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flags.BoolVar(&o.LeaderElection.LeaderElect, "leader-elect", true, "Start a leader election client and gain leadership before executing the main loop. Enable this when running replicated components for high availability.")
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flags.StringVar(&o.LeaderElection.ResourceNamespace, "leader-elect-resource-namespace", util.NamespaceKarmadaSystem, "The namespace of resource object that is used for locking during leader election.")
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flags.DurationVar(&o.ClusterLeaseDuration.Duration, "cluster-lease-duration", 40*time.Second,
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"Specifies the expiration period of a cluster lease.")
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flags.Float64Var(&o.ClusterLeaseRenewIntervalFraction, "cluster-lease-renew-interval-fraction", 0.25,
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"Specifies the cluster lease renew interval fraction.")
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flags.DurationVar(&o.ClusterMonitorPeriod.Duration, "cluster-monitor-period", 5*time.Second,
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"Specifies how often karmada-controller-manager monitors cluster health status.")
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flags.DurationVar(&o.ClusterMonitorGracePeriod.Duration, "cluster-monitor-grace-period", 40*time.Second,
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"Specifies the grace period of allowing a running cluster to be unresponsive before marking it unhealthy.")
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flags.DurationVar(&o.ClusterStartupGracePeriod.Duration, "cluster-startup-grace-period", 60*time.Second,
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"Specifies the grace period of allowing a cluster to be unresponsive during startup before marking it unhealthy.")
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flags.DurationVar(&o.FailoverEvictionTimeout.Duration, "failover-eviction-timeout", 5*time.Minute,
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"Specifies the grace period for deleting scheduling result on failed clusters.")
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flags.StringVar(&o.SkippedPropagatingAPIs, "skipped-propagating-apis", "", "Semicolon separated resources that should be skipped from propagating in addition to the default skip list(cluster.karmada.io;policy.karmada.io;work.karmada.io). Supported formats are:\n"+
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"<group> for skip resources with a specific API group(e.g. networking.k8s.io),\n"+
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"<group>/<version> for skip resources with a specific API version(e.g. networking.k8s.io/v1beta1),\n"+
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"<group>/<version>/<kind>,<kind> for skip one or more specific resource(e.g. networking.k8s.io/v1beta1/Ingress,IngressClass) where the kinds are case-insensitive.")
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flags.StringSliceVar(&o.SkippedPropagatingNamespaces, "skipped-propagating-namespaces", []string{},
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"Comma-separated namespaces that should be skipped from propagating in addition to the default skipped namespaces(karmada-system, karmada-cluster, namespaces prefixed by kube- and karmada-es-).")
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flags.StringVar(&o.ClusterAPIContext, "cluster-api-context", "", "Name of the cluster context in cluster-api management cluster kubeconfig file.")
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flags.StringVar(&o.ClusterAPIKubeconfig, "cluster-api-kubeconfig", "", "Path to the cluster-api management cluster kubeconfig file.")
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flags.Float32Var(&o.ClusterAPIQPS, "cluster-api-qps", 40.0, "QPS to use while talking with cluster kube-apiserver. Doesn't cover events and node heartbeat apis which rate limiting is controlled by a different set of flags.")
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flags.IntVar(&o.ClusterAPIBurst, "cluster-api-burst", 60, "Burst to use while talking with cluster kube-apiserver. Doesn't cover events and node heartbeat apis which rate limiting is controlled by a different set of flags.")
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flags.Float32Var(&o.KubeAPIQPS, "kube-api-qps", 40.0, "QPS to use while talking with karmada-apiserver. Doesn't cover events and node heartbeat apis which rate limiting is controlled by a different set of flags.")
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flags.IntVar(&o.KubeAPIBurst, "kube-api-burst", 60, "Burst to use while talking with karmada-apiserver. Doesn't cover events and node heartbeat apis which rate limiting is controlled by a different set of flags.")
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flags.DurationVar(&o.ClusterCacheSyncTimeout.Duration, "cluster-cache-sync-timeout", util.CacheSyncTimeout, "Timeout period waiting for cluster cache to sync.")
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flags.DurationVar(&o.ResyncPeriod.Duration, "resync-period", 0, "Base frequency the informers are resynced.")
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flags.StringVar(&o.MetricsBindAddress, "metrics-bind-address", ":8080", "The TCP address that the controller should bind to for serving prometheus metrics(e.g. 127.0.0.1:8088, :8088)")
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flags.IntVar(&o.ConcurrentClusterSyncs, "concurrent-cluster-syncs", 5, "The number of Clusters that are allowed to sync concurrently.")
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flags.IntVar(&o.ConcurrentClusterResourceBindingSyncs, "concurrent-clusterresourcebinding-syncs", 5, "The number of ClusterResourceBindings that are allowed to sync concurrently.")
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flags.IntVar(&o.ConcurrentResourceBindingSyncs, "concurrent-resourcebinding-syncs", 5, "The number of ResourceBindings that are allowed to sync concurrently.")
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flags.IntVar(&o.ConcurrentWorkSyncs, "concurrent-work-syncs", 5, "The number of Works that are allowed to sync concurrently.")
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flags.IntVar(&o.ConcurrentNamespaceSyncs, "concurrent-namespace-syncs", 1, "The number of Namespaces that are allowed to sync concurrently.")
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flags.IntVar(&o.ConcurrentResourceTemplateSyncs, "concurrent-resource-template-syncs", 5, "The number of resource templates that are allowed to sync concurrently.")
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o.RateLimiterOpts.AddFlags(flags)
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features.FeatureGate.AddFlag(flags)
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}
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