chore: change default config path

Signed-off-by: Rory Z <[email protected]>

Dockerfile

@@ -1,21 +1,18 @@
 # Build the manager binary
 FROM golang:1.20.3 as builder
 
-ARG GOPROXY=https://goproxy.cn,direct
-
 WORKDIR /workspace
 COPY . .
 RUN go work init \
     && go work use . \
     && go mod download \
-    && CGO_ENABLED=0 GOOS=linux go build -o emqx-exporter
+    && CGO_ENABLED=0 GOOS=linux make build
 
 FROM quay.io/prometheus/busybox:latest
-LABEL maintainer="EMQX"
 
-COPY --from=builder /workspace/emqx-exporter /bin/emqx-exporter
-COPY config/example/config.yaml /etc/emqx-exporter/config.yaml
+WORKDIR /usr/local/emqx-exporter/bin
+COPY --from=builder /workspace/bin/. /usr/local/emqx-exporter/bin
 
-EXPOSE      8085
-USER        nobody
-ENTRYPOINT  [ "/bin/emqx-exporter" ]
+USER nobody:nobody
+EXPOSE 8085
+ENTRYPOINT [ "/usr/local/emqx-exporter/bin/emqx-exporter" ]

Makefile

@@ -16,6 +16,7 @@ all: build
 .PHONY: build
 build:
 	go build -o $(LOCALBIN)/$(PROJECT_NAME)
+	@cp $(PROJECT_DIR)/config/example/config.yaml $(LOCALBIN)/config.yaml
 
 .PHONY: test
 test: build

config/example/config.yaml

@@ -2,11 +2,11 @@ metrics:
   ## EMQX API
   target: 127.0.0.1:18083
   ## EMQX API key
-  api_key: "76668f8a2003d597"
+  api_key: "some_api_key"
   ## EMQX API secret
-  api_secret: "CRCDB6lxxzN58e5HoD82llBC0Erg1TVZIAUsdTjPU7N"
+  api_secret: "some_api_secret"
 probes:
-  - target: broker.emqx.io:1883 ## MQTT broker address
+  - target: 127.0.0.1:1883 ## MQTT broker address
     scheme: ## tcp, default is tcp
     client_id:
     username:

main.go

@@ -21,6 +21,7 @@ import (
 	"net/http"
 	_ "net/http/pprof"
 	"os"
+	"path/filepath"
 	"runtime"
 
 	"github.com/alecthomas/kingpin/v2"
@@ -37,7 +38,7 @@ import (
 
 func main() {
 	var (
-		configFile             = kingpin.Flag("config.file", "EMQX exporter configuration file.").Default("/etc/emqx-exporter/config.yaml").String()
+		configFile             = kingpin.Flag("config.file", "EMQX exporter configuration file.").Default(filepath.Join(filepath.Dir(os.Args[0]), "config.yaml")).String()
 		maxProcs               = kingpin.Flag("runtime.gomaxprocs", "The target number of CPUs Go will run on (GOMAXPROCS)").Envar("GOMAXPROCS").Default("4").Int()
 		maxRequests            = kingpin.Flag("web.max-requests", "Maximum number of parallel scrape requests. Use 0 to disable.").Default("40").Int()
 		disableExporterMetrics = kingpin.Flag("web.disable-exporter-metrics", "Exclude metrics about the exporter itself (promhttp_*, process_*, go_*).").Bool()

main_test.go

@@ -26,9 +26,8 @@ import (
 )
 
 const (
-	address    = "localhost:19100"
-	binary     = "bin/emqx-exporter"
-	configFile = "config/example/config.yaml"
+	address = "localhost:19100"
+	binary  = "bin/emqx-exporter"
 )
 
 func TestFileDescriptorLeak(t *testing.T) {
@@ -46,7 +45,7 @@ func TestFileDescriptorLeak(t *testing.T) {
 		t.Errorf("unable to read process stats: %s", err)
 	}
 
-	exporter := exec.Command(binary, "--web.listen-address", address, "--config.file", configFile)
+	exporter := exec.Command(binary, "--web.listen-address", address)
 	test := func(pid int) error {
 		if err := queryExporter(address); err != nil {
 			return err