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Add prometheus metrics to CSI external-resizer using new csi-lib-utils library #67

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merged 2 commits into from
Jan 3, 2020
Merged

Add prometheus metrics to CSI external-resizer using new csi-lib-utils library #67

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77ba86e
Update dependencies
saad-ali Dec 31, 2019
a98e9b7
Introduce metrics library
saad-ali Dec 31, 2019
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4 changes: 4 additions & 0 deletions README.md
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Expand Up @@ -49,6 +49,10 @@ Note that the external-resizer does not scale with more replicas. Only one exter

* `--workers <num>`: Number of simultaneously running `ControllerExpandVolume` operations. Default value is `10`.

* `--metrics-address`: The TCP network address where the prometheus metrics endpoint will run (example: `:8080` which corresponds to port 8080 on local host). The default is empty string, which means metrics endpoint is disabled.

* `--metrics-path`: The HTTP path where prometheus metrics will be exposed. Default is `/metrics`.

#### Other recognized arguments

* `--kubeconfig <path>`: Path to Kubernetes client configuration that the external-resizer uses to connect to Kubernetes API server. When omitted, default token provided by Kubernetes will be used. This option is useful only when the external-resizer does not run as a Kubernetes pod, e.g. for debugging. Either this or `--master` needs to be set if the external-resizer is being run out of cluster.
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11 changes: 10 additions & 1 deletion cmd/csi-resizer/main.go
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Expand Up @@ -46,6 +46,9 @@ var (
enableLeaderElection = flag.Bool("leader-election", false, "Enable leader election.")
leaderElectionNamespace = flag.String("leader-election-namespace", "", "Namespace where the leader election resource lives. Defaults to the pod namespace if not set.")

metricsAddress = flag.String("metrics-address", "", "The TCP network address where the prometheus metrics endpoint will listen (example: `:8080`). The default is empty string, which means metrics endpoint is disabled.")
metricsPath = flag.String("metrics-path", "/metrics", "The HTTP path where prometheus metrics will be exposed. Default is `/metrics`.")

version = "unknown"
)

Expand All @@ -67,7 +70,13 @@ func main() {

informerFactory := informers.NewSharedInformerFactory(kubeClient, *resyncPeriod)

csiResizer, err := resizer.NewResizer(*csiAddress, *csiTimeout, kubeClient, informerFactory)
csiResizer, err := resizer.NewResizer(
*csiAddress,
*csiTimeout,
kubeClient,
informerFactory,
*metricsAddress,
*metricsPath)
if err != nil {
klog.Fatal(err.Error())
}
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80 changes: 29 additions & 51 deletions go.mod
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Expand Up @@ -3,77 +3,55 @@ module github.com/kubernetes-csi/external-resizer
go 1.12

require (
github.com/container-storage-interface/spec v0.0.0-20190314210110-c3707a60a2d4
github.com/evanphx/json-patch v4.1.0+incompatible // indirect
github.com/gogo/protobuf v1.2.1 // indirect
github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef // indirect
github.com/golang/protobuf v1.3.1 // indirect
github.com/googleapis/gnostic v0.2.0 // indirect
github.com/hashicorp/golang-lru v0.5.1 // indirect
github.com/container-storage-interface/spec v1.1.0
github.com/imdario/mergo v0.3.7 // indirect
github.com/json-iterator/go v1.1.6 // indirect
github.com/kubernetes-csi/csi-lib-utils v0.6.1
github.com/spf13/pflag v1.0.3 // indirect
golang.org/x/crypto v0.0.0-20190325154230-a5d413f7728c // indirect
golang.org/x/sys v0.0.0-20190329044733-9eb1bfa1ce65 // indirect
golang.org/x/time v0.0.0-20190308202827-9d24e82272b4 // indirect
google.golang.org/genproto v0.0.0-20190327125643-d831d65fe17d // indirect
google.golang.org/grpc v1.19.1
gopkg.in/inf.v0 v0.9.1 // indirect
gopkg.in/yaml.v2 v2.2.2 // indirect
k8s.io/api v0.0.0-20190918195907-bd6ac527cfd2
k8s.io/apimachinery v0.0.0-20190817020851-f2f3a405f61d
k8s.io/client-go v0.0.0-20190918200256-06eb1244587a
k8s.io/csi-translation-lib v0.0.0-20190918203248-97c07dcbb623
k8s.io/klog v0.3.1
k8s.io/kube-openapi v0.0.0-20190320154901-5e45bb682580 // indirect
k8s.io/utils v0.0.0-20190308190857-21c4ce38f2a7 // indirect
github.com/kubernetes-csi/csi-lib-utils v0.7.0
google.golang.org/grpc v1.26.0
k8s.io/api v0.17.0
k8s.io/apimachinery v0.17.1-beta.0
k8s.io/client-go v0.17.0
k8s.io/csi-translation-lib v0.17.0
k8s.io/klog v1.0.0
)

replace k8s.io/api => k8s.io/api v0.0.0-20190918195907-bd6ac527cfd2
replace k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.17.0

replace k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.0.0-20190918201827-3de75813f604
replace k8s.io/apiserver => k8s.io/apiserver v0.17.0

replace k8s.io/apimachinery => k8s.io/apimachinery v0.0.0-20190817020851-f2f3a405f61d
replace k8s.io/cli-runtime => k8s.io/cli-runtime v0.17.0

replace k8s.io/apiserver => k8s.io/apiserver v0.0.0-20190918200908-1e17798da8c1
replace k8s.io/cloud-provider => k8s.io/cloud-provider v0.17.0

replace k8s.io/cli-runtime => k8s.io/cli-runtime v0.0.0-20190918202139-0b14c719ca62
replace k8s.io/cluster-bootstrap => k8s.io/cluster-bootstrap v0.17.0

replace k8s.io/client-go => k8s.io/client-go v0.0.0-20190918200256-06eb1244587a
replace k8s.io/code-generator => k8s.io/code-generator v0.17.1-beta.0

replace k8s.io/cloud-provider => k8s.io/cloud-provider v0.0.0-20190918203125-ae665f80358a
replace k8s.io/component-base => k8s.io/component-base v0.17.0

replace k8s.io/cluster-bootstrap => k8s.io/cluster-bootstrap v0.0.0-20190918202959-c340507a5d48
replace k8s.io/cri-api => k8s.io/cri-api v0.17.1-beta.0

replace k8s.io/code-generator => k8s.io/code-generator v0.0.0-20190612205613-18da4a14b22b
replace k8s.io/kube-aggregator => k8s.io/kube-aggregator v0.17.0

replace k8s.io/component-base => k8s.io/component-base v0.0.0-20190918200425-ed2f0867c778
replace k8s.io/kube-controller-manager => k8s.io/kube-controller-manager v0.17.0

replace k8s.io/cri-api => k8s.io/cri-api v0.0.0-20190817025403-3ae76f584e79
replace k8s.io/kube-proxy => k8s.io/kube-proxy v0.17.0

replace k8s.io/csi-translation-lib => k8s.io/csi-translation-lib v0.0.0-20190918203248-97c07dcbb623

replace k8s.io/kube-aggregator => k8s.io/kube-aggregator v0.0.0-20190918201136-c3a845f1fbb2

replace k8s.io/kube-controller-manager => k8s.io/kube-controller-manager v0.0.0-20190918202837-c54ce30c680e
replace k8s.io/kube-scheduler => k8s.io/kube-scheduler v0.17.0

replace k8s.io/kube-proxy => k8s.io/kube-proxy v0.0.0-20190918202429-08c8357f8e2d
replace k8s.io/kubectl => k8s.io/kubectl v0.17.0

replace k8s.io/kube-scheduler => k8s.io/kube-scheduler v0.0.0-20190918202713-c34a54b3ec8e
replace k8s.io/kubelet => k8s.io/kubelet v0.17.0

replace k8s.io/kubectl => k8s.io/kubectl v0.0.0-20190602132728-7075c07e78bf
replace k8s.io/legacy-cloud-providers => k8s.io/legacy-cloud-providers v0.17.0

replace k8s.io/kubelet => k8s.io/kubelet v0.0.0-20190918202550-958285cf3eef
replace k8s.io/metrics => k8s.io/metrics v0.17.0

replace k8s.io/legacy-cloud-providers => k8s.io/legacy-cloud-providers v0.0.0-20190918203421-225f0541b3ea
replace k8s.io/node-api => k8s.io/node-api v0.17.0

replace k8s.io/metrics => k8s.io/metrics v0.0.0-20190918202012-3c1ca76f5bda
replace k8s.io/sample-apiserver => k8s.io/sample-apiserver v0.17.0

replace k8s.io/node-api => k8s.io/node-api v0.0.0-20190918203548-2c4c2679bece
replace k8s.io/sample-cli-plugin => k8s.io/sample-cli-plugin v0.17.0

replace k8s.io/sample-apiserver => k8s.io/sample-apiserver v0.0.0-20190918201353-5cc279503896
replace k8s.io/sample-controller => k8s.io/sample-controller v0.17.0

replace k8s.io/sample-cli-plugin => k8s.io/sample-cli-plugin v0.0.0-20190918202305-ed68a9f09ae1

replace k8s.io/sample-controller => k8s.io/sample-controller v0.0.0-20190918201537-fabef0de90df
replace k8s.io/csi-translation-lib => k8s.io/csi-translation-lib v0.0.0-20190918203248-97c07dcbb623
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