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kubeadm: Allows to specify custom flag values for control plane components

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This makes it possible to override / add flag values to the k8s api server, controller manager and scheduler components on `kubeadm init` and `kubeadm alpha controlplane <component>`

Signed-off-by: Simon Ferquel <simon.ferquel@docker.com>
This commit is contained in:
Simon Ferquel 2018-01-10 14:05:44 +01:00
parent 62616d79ad
commit 72376f26ef
3 changed files with 13 additions and 0 deletions
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5
cmd/kubeadm/app/cmd/init.go
View File

@ -32,6 +32,7 @@ import (
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/sets"
utilflag "k8s.io/apiserver/pkg/util/flag"
clientset "k8s.io/client-go/kubernetes"
kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
kubeadmapiext "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1alpha1"
@ -192,6 +193,10 @@ func AddInitConfigFlags(flagSet *flag.FlagSet, cfg *kubeadmapiext.MasterConfigur
)
flagSet.StringVar(featureGatesString, "feature-gates", *featureGatesString, "A set of key=value pairs that describe feature gates for various features. "+
"Options are:\n"+strings.Join(features.KnownFeatures(&features.InitFeatureGates), "\n"))
flagSet.Var(utilflag.NewMapStringString(&cfg.APIServerExtraArgs), "apiserver-extra-args", "A set of extra flags to pass to the API Server or override default ones in form of <flagname>=<value>")
flagSet.Var(utilflag.NewMapStringString(&cfg.ControllerManagerExtraArgs), "controller-manager-extra-args", "A set of extra flags to pass to the Controller Manager or override default ones in form of <flagname>=<value>")
flagSet.Var(utilflag.NewMapStringString(&cfg.SchedulerExtraArgs), "scheduler-extra-args", "A set of extra flags to pass to the Scheduler or override default ones in form of <flagname>=<value>")
}
// AddInitOtherFlags adds init flags that are not bound to a configuration file to the given flagset

1
cmd/kubeadm/app/cmd/phases/BUILD
View File

@ -54,6 +54,7 @@ go_library(
"//vendor/github.com/spf13/pflag:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/sets:go_default_library",
"//vendor/k8s.io/apiserver/pkg/util/flag:go_default_library",
"//vendor/k8s.io/client-go/kubernetes:go_default_library",
"//vendor/k8s.io/client-go/tools/bootstrap/token/api:go_default_library",
"//vendor/k8s.io/client-go/tools/bootstrap/token/util:go_default_library",

7
cmd/kubeadm/app/cmd/phases/controlplane.go
View File

@ -22,6 +22,7 @@ import (
"github.com/spf13/cobra"
utilflag "k8s.io/apiserver/pkg/util/flag"
kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
kubeadmapiext "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1alpha1"
"k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/validation"
@ -147,10 +148,16 @@ func getControlPlaneSubCommands(outDir, defaultKubernetesVersion string) []*cobr
cmd.Flags().StringVar(&cfg.Networking.ServiceSubnet, "service-cidr", cfg.Networking.ServiceSubnet, "The range of IP address used for service VIPs")
cmd.Flags().StringVar(&featureGatesString, "feature-gates", featureGatesString, "A set of key=value pairs that describe feature gates for various features. "+
"Options are:\n"+strings.Join(features.KnownFeatures(&features.InitFeatureGates), "\n"))
cmd.Flags().Var(utilflag.NewMapStringString(&cfg.APIServerExtraArgs), "apiserver-extra-args", "A set of extra flags to pass to the API Server or override default ones in form of <flagname>=<value>")
}
if properties.use == "all" || properties.use == "controller-manager" {
cmd.Flags().StringVar(&cfg.Networking.PodSubnet, "pod-network-cidr", cfg.Networking.PodSubnet, "The range of IP addresses used for the Pod network")
cmd.Flags().Var(utilflag.NewMapStringString(&cfg.ControllerManagerExtraArgs), "controller-manager-extra-args", "A set of extra flags to pass to the Controller Manager or override default ones in form of <flagname>=<value>")
}
if properties.use == "all" || properties.use == "scheduler" {
cmd.Flags().Var(utilflag.NewMapStringString(&cfg.SchedulerExtraArgs), "scheduler-extra-args", "A set of extra flags to pass to the Scheduler or override default ones in form of <flagname>=<value>")
}
cmd.Flags().StringVar(&cfgPath, "config", cfgPath, "Path to kubeadm config file (WARNING: Usage of a configuration file is experimental)")