Add a random suffix to the helper pod's name

To fix the race condition caused by reusing the helper pod name.

#154

Signed-off-by: Sheng Yang <[email protected]>

go.mod

@@ -11,6 +11,7 @@ require (
 	github.com/miekg/dns v1.1.27 // indirect
 	github.com/pkg/errors v0.8.1
 	github.com/prometheus/client_golang v1.1.0 // indirect
+	github.com/satori/go.uuid v1.2.0
 	github.com/urfave/cli v1.19.1
 	golang.org/x/sys v0.0.0-20190926180325-855e68c8590b // indirect
 	golang.org/x/time v0.0.0-20190921001708-c4c64cad1fd0 // indirect

go.sum

@@ -154,6 +154,8 @@ github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R
 github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
 github.com/prometheus/procfs v0.0.3 h1:CTwfnzjQ+8dS6MhHHu4YswVAD99sL2wjPqP+VkURmKE=
 github.com/prometheus/procfs v0.0.3/go.mod h1:4A/X28fw3Fc593LaREMrKMqOKvUAntwMDaekg4FpcdQ=
+github.com/satori/go.uuid v1.2.0 h1:0uYX9dsZ2yD7q2RtLRtPSdGDWzjeM3TbMJP9utgA0ww=
+github.com/satori/go.uuid v1.2.0/go.mod h1:dA0hQrYB0VpLJoorglMZABFdXlWrHn1NEOzdhQKdks0=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/spf13/afero v1.2.2/go.mod h1:9ZxEEn6pIJ8Rxe320qSDBk6AsU0r9pR7Q4OcevTdifk=
 github.com/spf13/pflag v0.0.0-20170130214245-9ff6c6923cff h1:VARhShG49tiji6mdRNp7JTNDtJ0FhuprF93GBQ37xGU=

provisioner.go

@@ -13,6 +13,7 @@ import (
 
 	"github.com/Sirupsen/logrus"
 	"github.com/pkg/errors"
+	uuid "github.com/satori/go.uuid"
 	v1 "k8s.io/api/core/v1"
 	k8serror "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -386,6 +387,9 @@ func (p *LocalPathProvisioner) createHelperPod(action ActionType, cmdsForPath []
 	}
 	helperPod := p.helperPod.DeepCopy()
 
+	// use different name for helper pods
+	// https://github.com/rancher/local-path-provisioner/issues/154
+	helperPod.Name = helperPod.Name + "-" + uuid.NewV4().String()[:8]
 	helperPod.Namespace = p.namespace
 	helperPod.Spec.NodeName = node
 	helperPod.Spec.ServiceAccountName = p.serviceAccountName