Set gomaxprocs env

.github/workflows/test-build-deploy.yml

@@ -6,7 +6,8 @@ on:
     tags:
       - v[0-9]+.[0-9]+.[0-9]+** # Tag filters not as strict due to different regex system on Github Actions
   pull_request:
-
+env:
+  GOMAXPROCS: 1
 jobs:
   lint:
     runs-on: ubuntu-20.04
@@ -54,7 +55,9 @@ jobs:
           mkdir -p /go/src/github.com/cortexproject/cortex
           ln -s $GITHUB_WORKSPACE/* /go/src/github.com/cortexproject/cortex
       - name: Run Tests
-        run: make BUILD_IN_CONTAINER=false test
+        run: |
+          go run ./maxproc.go
+          make BUILD_IN_CONTAINER=false test
 
   security:
     name: CodeQL

Makefile

@@ -223,6 +223,7 @@ lint:
 		./pkg/ruler/...
 
 test:
+	go env
 	go test -tags netgo -timeout 30m -race -count 1 ./...
 
 cover:

maxproc.go

@@ -0,0 +1,14 @@
+package main
+
+import (
+	"fmt"
+	"runtime"
+)
+
+func getGOMAXPROCS() int {
+	return runtime.GOMAXPROCS(0)
+}
+
+func main() {
+	fmt.Printf("GOMAXPROCS is %d\n", getGOMAXPROCS())
+}