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kubeadm: prevent PSP blocking of upgrade image prepull #77792

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merged 1 commit into from
Jul 2, 2019
Merged

kubeadm: prevent PSP blocking of upgrade image prepull #77792

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1 change: 1 addition & 0 deletions cmd/kubeadm/app/phases/upgrade/BUILD
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@ go_library(
"//staging/src/k8s.io/client-go/kubernetes:go_default_library",
"//staging/src/k8s.io/client-go/pkg/version:go_default_library",
"//vendor/github.com/pkg/errors:go_default_library",
"//vendor/k8s.io/utils/pointer:go_default_library",
],
)

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8 changes: 7 additions & 1 deletion cmd/kubeadm/app/phases/upgrade/prepull.go
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Expand Up @@ -22,13 +22,14 @@ import (

"github.com/pkg/errors"
apps "k8s.io/api/apps/v1"
"k8s.io/api/core/v1"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
clientset "k8s.io/client-go/kubernetes"
kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
"k8s.io/kubernetes/cmd/kubeadm/app/constants"
"k8s.io/kubernetes/cmd/kubeadm/app/images"
"k8s.io/kubernetes/cmd/kubeadm/app/util/apiclient"
utilpointer "k8s.io/utils/pointer"
)

const (
Expand Down Expand Up @@ -183,6 +184,11 @@ func buildPrePullDaemonSet(component, image string) *apps.DaemonSet {
},
Tolerations: []v1.Toleration{constants.ControlPlaneToleration},
TerminationGracePeriodSeconds: &gracePeriodSecs,
// Explicitly add a PodSecurityContext to allow these Pods to run as non-root.
// This prevents restrictive PSPs from blocking the Pod creation.
SecurityContext: &v1.PodSecurityContext{
RunAsUser: utilpointer.Int64Ptr(999),
},
},
},
},
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