Fix image, readme

Author: jknipper

Dockerfile

@@ -1,19 +1,16 @@
-FROM golang:1.11 AS builder
+FROM golang:1.16-alpine3.13 AS builder
 
 WORKDIR /go/src/github.com/sapcc/kuberntes-oomkill-exporter
-ENV GO111MODULE=on \
-    CGOENABLED=0
 ADD go.mod go.sum ./
 RUN go mod download
 ADD cache/main.go .
 RUN go build -v -o /dev/null
 ADD . .
-RUN go build -v -o /kubernetes-oomkill-exporter
-RUN go test -v
-RUN go vet
+RUN CGOENABLED=0 go build -v -o /kubernetes-oomkill-exporter
 
-FROM alpine:3.8
+FROM alpine:3.13
 LABEL maintainer="jan.knipper@sap.com"
+LABEL source_repository="https://github.com/sapcc/kubernetes-oomkill-exporter"
 
 RUN apk --no-cache add ca-certificates
 COPY --from=builder /kubernetes-oomkill-exporter /kubernetes-oomkill-exporter

Makefile

@@ -1,14 +1,14 @@
 TARGET = kubernetes-oomkill-exporter
 GOTARGET = github.com/sapcc/$(TARGET)
 REGISTRY ?= sapcc
-VERSION ?= 0.3.0
+VERSION ?= 0.3.1
 IMAGE = $(REGISTRY)/$(BIN)
 DOCKER ?= docker
 
 all: container
 
 container:
-	$(DOCKER) build -t $(REGISTRY)/$(TARGET):latest -t $(REGISTRY)/$(TARGET):$(VERSION) .
+	$(DOCKER) build --network=host -t $(REGISTRY)/$(TARGET):latest -t $(REGISTRY)/$(TARGET):$(VERSION) .
 
 push:
 	$(DOCKER) push $(REGISTRY)/$(TARGET):latest

README.md

@@ -6,7 +6,9 @@
 
 ----
 
-kubernetes-oomkill-exporter is parsing kernel log for killed pods, collects information like namespace from docker and exposes them in a metric.
+kubernetes-oomkill-exporter is parsing kernel log for killed pods, collects information like namespace from docker and exposes them in a metric. It can be deployed as a `DaemonSet` to run on every node in your cluster, see [here for an example](yaml/oomkill-exporter.yaml). Exported metric is called `klog_pod_oomkill` and counts the amount of oomkills of a certain pod.
+
+
 
 ## License
 This project is licensed under the Apache2 License - see the [LICENSE](LICENSE) file for details

yaml/oomkill-exporter.yaml

@@ -18,8 +18,8 @@ spec:
     spec:
       containers:
       - name: oomkill-exporter
-        image: sapcc/kubernetes-oomkill-exporter:latest
-        imagePullPolicy: Always
+        image: sapcc/kubernetes-oomkill-exporter:0.3.1
+        imagePullPolicy: IfNotPresent
         args:
         - -logtostderr
         - -v=5
@@ -44,10 +44,13 @@ spec:
         ports:
         - name: metrics
           containerPort: 9102
+      tolerations:
+      - operator: Exists
       volumes:
       - name: kmsg
         hostPath:
           path: /dev/kmsg
       - name: docker
         hostPath:
           path: /var/run/docker.sock
+