Add local target in Dockerfile and build for centos8

.github/workflows/ci.yml

@@ -31,31 +31,20 @@ jobs:
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v2
-      - name: Fetch Cached Artifacts
+      - name: Setup Golang Environment
+        uses: actions/setup-go@v2
+        with:
+          go-version: '${{ env.GOLANG_VERSION }}'
+      - name: Build Binary
+        run: >
+          make build
+        env:
+          GOFLAGS: '-mod=vendor -gcflags=-trimpath=${{ github.workspace }} -asmflags=-trimpath=${{ github.workspace }}'
+      - name: Store Artifacts in Cache
         uses: actions/cache@v2.1.4
         with:
           path: ${{ github.workspace }}/nginx-asg-sync
           key: nginx-asg-sync-${{ github.run_id }}-${{ github.run_number }}
-      - name: Docker Buildx
-        uses: docker/setup-buildx-action@v1
-        with:
-          driver-opts: network=host
-      - name: Cache Docker layers
-        uses: actions/cache@v2.1.4
-        with:
-          path: /tmp/.buildx-cache
-          key: ${{ runner.os }}-buildx-${{ github.sha }}
-          restore-keys: |
-            ${{ runner.os }}-buildx-
-      - name: Build Image
-        uses: docker/build-push-action@v2
-        with:
-          file: build/Dockerfile
-          context: '.'
-          target: builder
-          cache-from: type=local,src=/tmp/.buildx-cache
-          cache-to: type=local,dest=/tmp/.buildx-cache
-          tags: nginx/nginx-asg-sync:${{ github.sha }}
 
   unit-tests:
     name: Unit Tests
@@ -98,13 +87,14 @@ jobs:
         with:
           file: build/Dockerfile
           context: '.'
-          target: rpm_based
+          target: local
           load: true
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache
           tags: amazon-builder:${{ github.sha }}
           build-args: |
             CONTAINER_VERSION=amazonlinux:1
+            OS_TYPE=rpm_based
       - name: Run Amazon 1
         uses: addnab/docker-run-action@v2
         with:
@@ -116,13 +106,14 @@ jobs:
         with:
           file: build/Dockerfile
           context: '.'
-          target: rpm_based
+          target: local
           load: true
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache
           tags: amazon2-builder:${{ github.sha }}
           build-args: |
             CONTAINER_VERSION=amazonlinux:2
+            OS_TYPE=rpm_based
       - name: Run Amazon 2
         uses: addnab/docker-run-action@v2
         with:
@@ -134,32 +125,52 @@ jobs:
         with:
           file: build/Dockerfile
           context: '.'
-          target: rpm_based
+          target: local
           load: true
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache
           tags: centos7-builder:${{ github.sha }}
           build-args: |
             CONTAINER_VERSION=centos:7
+            OS_TYPE=rpm_based
       - name: Run Centos 7
         uses: addnab/docker-run-action@v2
         with:
           image: centos7-builder:${{ github.sha }}
           run: /build.sh
           options: -v ${{ github.workspace }}/build/package/rpm:/rpm -v ${{ github.workspace }}/build_output:/build_output
+      - name: Build Image Centos 8
+        uses: docker/build-push-action@v2
+        with:
+          file: build/Dockerfile
+          context: '.'
+          target: local
+          load: true
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache
+          tags: centos8-builder:${{ github.sha }}
+          build-args: |
+            CONTAINER_VERSION=centos:8
+            OS_TYPE=rpm_based
+      - name: Run Centos 8
+        uses: addnab/docker-run-action@v2
+        with:
+          image: centos8-builder:${{ github.sha }}
+          run: /build.sh
+          options: -v ${{ github.workspace }}/build/package/rpm:/rpm -v ${{ github.workspace }}/build_output:/build_output
       - name: Build Image Ubuntu Xenial
         uses: docker/build-push-action@v2
         with:
           file: build/Dockerfile
           context: '.'
-          target: deb_based
+          target: local
           load: true
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache
           tags: ubuntu-xenial-builder:${{ github.sha }}
           build-args: |
             CONTAINER_VERSION=ubuntu:xenial
-            OS_VERSION=xenial
+            OS_TYPE=deb_based
       - name: Run Ubuntu Xenial
         uses: addnab/docker-run-action@v2
         with:
@@ -171,14 +182,14 @@ jobs:
         with:
           file: build/Dockerfile
           context: '.'
-          target: deb_based
+          target: local
           load: true
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache
           tags: ubuntu-bionic-builder:${{ github.sha }}
           build-args: |
             CONTAINER_VERSION=ubuntu:bionic
-            OS_VERSION=bionic
+            OS_TYPE=deb_based
       - name: Run Ubuntu Bionic
         uses: addnab/docker-run-action@v2
         with:
@@ -190,14 +201,14 @@ jobs:
         with:
           file: build/Dockerfile
           context: '.'
-          target: deb_based
+          target: local
           load: true
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache
           tags: ubuntu-focal-builder:${{ github.sha }}
           build-args: |
             CONTAINER_VERSION=ubuntu:focal
-            OS_VERSION=focal
+            OS_TYPE=deb_based
       - name: Run Ubuntu Focal
         uses: addnab/docker-run-action@v2
         with:
@@ -209,14 +220,14 @@ jobs:
         with:
           file: build/Dockerfile
           context: '.'
-          target: deb_based
+          target: local
           load: true
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache
           tags: ubuntu-groovy-builder:${{ github.sha }}
           build-args: |
             CONTAINER_VERSION=ubuntu:groovy
-            OS_VERSION=groovy
+            OS_TYPE=deb_based
       - name: Run Ubuntu Groovy
         uses: addnab/docker-run-action@v2
         with:

Makefile

@@ -1,9 +1,10 @@
 GO_DOCKER_RUN = docker run --rm -v $(shell pwd):/go/src/github.com/nginxinc/nginx-asg-sync -v $(shell pwd)/build_output:/build_output -w /go/src/github.com/nginxinc/nginx-asg-sync/cmd/sync
 GOFLAGS ?= -mod=vendor
+TARGET ?= local
 
 export DOCKER_BUILDKIT = 1
 
-all: amazon centos7 ubuntu-xenial amazon2 ubuntu-bionic ubuntu-focal ubuntu-groovy
+all: amazon centos7 centos8 ubuntu-xenial amazon2 ubuntu-bionic ubuntu-focal ubuntu-groovy
 
 .PHONY: test
 test:
@@ -12,32 +13,42 @@ test:
 lint:
 	golangci-lint run
 
-amazon:
-	docker build -t amazon-builder --target rpm_based --build-arg CONTAINER_VERSION=amazonlinux:1 -f build/Dockerfile .
+.PHONY: build
+build:
+ifeq (${TARGET},local)
+	CGO_ENABLED=0 GO111MODULE=on GOFLAGS='$(GOFLAGS)' GOOS=linux go build -installsuffix cgo -o nginx-asg-sync github.com/nginxinc/nginx-asg-sync/cmd/sync
+endif
+
+amazon: build
+	docker build -t amazon-builder --target ${TARGET} --build-arg CONTAINER_VERSION=amazonlinux:1 --build-arg OS_TYPE=rpm_based -f build/Dockerfile .
 	docker run --rm -v $(shell pwd)/build/package/rpm:/rpm -v $(shell pwd)/build_output:/build_output amazon-builder
 
-amazon2:
-	docker build -t amazon2-builder --target rpm_based --build-arg CONTAINER_VERSION=amazonlinux:2 -f build/Dockerfile .
+amazon2: build
+	docker build -t amazon2-builder --target ${TARGET} --build-arg CONTAINER_VERSION=amazonlinux:2 --build-arg OS_TYPE=rpm_based -f build/Dockerfile .
 	docker run --rm -v $(shell pwd)/build/package/rpm:/rpm -v $(shell pwd)/build_output:/build_output amazon2-builder
 
-centos7:
-	docker build -t centos7-builder --target rpm_based --build-arg CONTAINER_VERSION=centos:7 -f build/Dockerfile .
+centos7: build
+	docker build -t centos7-builder --target ${TARGET} --build-arg CONTAINER_VERSION=centos:7 --build-arg OS_TYPE=rpm_based -f build/Dockerfile .
 	docker run --rm -v $(shell pwd)/build/package/rpm:/rpm -v $(shell pwd)/build_output:/build_output centos7-builder
 
-ubuntu-xenial:
-	docker build -t ubuntu-xenial-builder --target deb_based --build-arg CONTAINER_VERSION=ubuntu:xenial --build-arg OS_VERSION=xenial -f build/Dockerfile .
+centos8: build
+	docker build -t centos8-builder --target ${TARGET} --build-arg CONTAINER_VERSION=centos:8 --build-arg OS_TYPE=rpm_based -f build/Dockerfile .
+	docker run --rm -v $(shell pwd)/build/package/rpm:/rpm -v $(shell pwd)/build_output:/build_output centos8-builder
+
+ubuntu-xenial: build
+	docker build -t ubuntu-xenial-builder --target ${TARGET} --build-arg CONTAINER_VERSION=ubuntu:xenial --build-arg OS_TYPE=deb_based -f build/Dockerfile .
 	docker run --rm -v $(shell pwd)/build/package/debian:/debian -v $(shell pwd)/build_output:/build_output ubuntu-xenial-builder
 
-ubuntu-bionic:
-	docker build -t ubuntu-bionic-builder --target deb_based --build-arg CONTAINER_VERSION=ubuntu:bionic --build-arg OS_VERSION=bionic -f build/Dockerfile .
+ubuntu-bionic: build
+	docker build -t ubuntu-bionic-builder --target ${TARGET} --build-arg CONTAINER_VERSION=ubuntu:bionic --build-arg OS_TYPE=deb_based -f build/Dockerfile .
 	docker run --rm -v $(shell pwd)/build/package/debian:/debian -v $(shell pwd)/build_output:/build_output ubuntu-bionic-builder
 
-ubuntu-focal:
-	docker build -t ubuntu-focal-builder --target deb_based --build-arg CONTAINER_VERSION=ubuntu:focal --build-arg OS_VERSION=focal -f build/Dockerfile .
+ubuntu-focal: build
+	docker build -t ubuntu-focal-builder --target ${TARGET} --build-arg CONTAINER_VERSION=ubuntu:focal --build-arg OS_TYPE=deb_based -f build/Dockerfile .
 	docker run --rm -v $(shell pwd)/build/package/debian:/debian -v $(shell pwd)/build_output:/build_output ubuntu-focal-builder
 
-ubuntu-groovy:
-	docker build -t ubuntu-groovy-builder --target deb_based --build-arg CONTAINER_VERSION=ubuntu:groovy --build-arg OS_VERSION=groovy -f build/Dockerfile .
+ubuntu-groovy: build
+	docker build -t ubuntu-groovy-builder --target ${TARGET} --build-arg CONTAINER_VERSION=ubuntu:groovy --build-arg OS_TYPE=deb_based -f build/Dockerfile .
 	docker run --rm -v $(shell pwd)/build/package/debian:/debian -v $(shell pwd)/build_output:/build_output ubuntu-groovy-builder
 
 .PHONY: clean

README.md

@@ -43,8 +43,8 @@ Below you will find documentation on how to use nginx-asg-sync.
 
 We provide packages for the following operating systems:
 
-* Ubuntu: 16.04 (Xenial), 18.04 (Bionic)
-* CentOS/RHEL: 7
+* Ubuntu: 16.04 (Xenial), 18.04 (Bionic), 20.04 (Focal), 20.10 (Groovy)
+* CentOS/RHEL: 7, 8
 * Amazon Linux: 1, 2
 
 Support for other operating systems can be added.
@@ -150,7 +150,7 @@ nginx-asg-sync runs as a system service and supports the start/stop/restart comm
 
 For Amazon Linux 1, run: `$ sudo start|stop|restart nginx-asg-sync`
 
-For Ubuntu 16.04, 18.04, 20.04, CentOS7/RHEL7 and Amazon Linux 2, run: `$ sudo service nginx-asg-sync start|stop|restart`
+For Ubuntu 16.04, 18.04, 20.04, 20.10, CentOS7/RHEL7, CentOS8/RHEL8 and Amazon Linux 2, run: `$ sudo service nginx-asg-sync start|stop|restart`
 
 ## Troubleshooting
 
@@ -161,17 +161,23 @@ If nginx-asg-sync doesn’t work as expected, check its log file available at **
 You can compile nginx-asg-sync and build a software package using the provided Makefile. Before you start building a package, make sure that the following software is installed on your system:
 * make
 * Docker
+* Go (optional, to build the binary locally)
 
 To build a software package, run: `$ make <os>`
 where `<os>` is the target OS. The following values are allowed:
 * `amazon` for Amazon Linux 1
 * `amazon2` for Amazon Linux 2
 * `centos7` for CentOS7/RHEL7
+* `centos8` for CentOS8/RHEL8
 * `ubuntu-xenial` for Ubuntu 16.04
 * `ubuntu-bionic` for Ubuntu 18.04
 * `ubuntu-focal` for Ubuntu 20.04
 * `ubuntu-groovy` for Ubuntu 20.10
 
+by default the nginx-asg-sync binary will be built locally, to build it inside a Docker container add the `TARGET` parameter to `make`, for example:
+
+`$ make ubuntu-focal TARGET=container`
+
 If you run make without any arguments, it will build software packages for all supported OSes.
 
 ## Support

build/Dockerfile

@@ -1,11 +1,12 @@
 ARG CONTAINER_VERSION=ubuntu:groovy
-ARG GOLANG_CONTAINER=golang:1.15
+ARG OS_TYPE=deb_based
+ARG PACKAGE_VERSION=0.4-1
 
-FROM $GOLANG_CONTAINER AS builder
+FROM golang:1.15-alpine AS builder
 WORKDIR /go/src/github.com/nginxinc/nginx-asg-sync/cmd/sync
 COPY . /go/src/github.com/nginxinc/nginx-asg-sync/
 
-RUN go build -o /nginx-asg-sync
+RUN CGO_ENABLED=0 GOFLAGS='-mod=vendor' go build -installsuffix cgo -o /nginx-asg-sync
 
 #---------------------------------------------------------------------------------------------
 
@@ -14,8 +15,6 @@ FROM ${CONTAINER_VERSION} as rpm_based
 RUN yum install -y rpmdevtools
 ADD build/package/builders/rpm_based/build.sh /
 
-COPY --from=builder /nginx-asg-sync /nginx-asg-sync
-
 ENTRYPOINT ["/build.sh"]
 
 #---------------------------------------------------------------------------------------------
@@ -25,11 +24,22 @@ FROM ${CONTAINER_VERSION} as deb_based
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install debhelper dh-systemd -y
 ADD build/package/builders/deb_based/build.sh /
 
-COPY --from=builder /nginx-asg-sync /nginx-asg-sync
-
 ARG PACKAGE_VERSION
-ARG OS_VERSION
+ARG CONTAINER_VERSION
 ENV PACKAGE_VERSION=${PACKAGE_VERSION}
-ENV OS_VERSION=${OS_VERSION}
+ENV CONTAINER_VERSION=${CONTAINER_VERSION}
 
 ENTRYPOINT ["/build.sh"]
+
+#---------------------------------------------------------------------------------------------
+
+FROM ${OS_TYPE} as container
+
+COPY --from=builder /nginx-asg-sync /nginx-asg-sync
+
+
+#---------------------------------------------------------------------------------------------
+
+FROM ${OS_TYPE} as local
+
+COPY nginx-asg-sync /nginx-asg-sync

build/package/builders/deb_based/build.sh

@@ -1,11 +1,13 @@
 #!/bin/bash
 
-# package_name=nginx-asg-sync-${PACKAGE_VERSION}
+package_name=nginx-asg-sync-${PACKAGE_VERSION}
 
 export SYSTEMD='--with=systemd'
-mkdir -p ~/nginx-asg-sync/
-cp -r /debian ~/nginx-asg-sync/
-cd ~/nginx-asg-sync/
+export OS_VERSION=${CONTAINER_VERSION#*:}
+
+mkdir -p ~/${package_name}/
+cp -r /debian ~/${package_name}/
+cd ~/${package_name}/
 sed -i "s/%%CODENAME%%/${OS_VERSION}/g" debian/changelog
 rm debian/nginx-asg-sync.upstart
 dpkg-buildpackage -us -uc

cmd/sync/main.go

@@ -15,9 +15,11 @@ import (
 	nginx "github.com/nginxinc/nginx-plus-go-client/client"
 )
 
-var configFile = flag.String("config_path", "/etc/nginx/config.yaml", "Path to the config file")
-var logFile = flag.String("log_path", "", "Path to the log file. If the file doesn't exist, it will be created")
-var version = "0.4-1"
+var (
+	configFile = flag.String("config_path", "/etc/nginx/config.yaml", "Path to the config file")
+	logFile    = flag.String("log_path", "", "Path to the log file. If the file doesn't exist, it will be created")
+	version    = "0.4-1"
+)
 
 const connTimeoutInSecs = 10
 
@@ -63,7 +65,6 @@ func main() {
 
 	httpClient := &http.Client{Timeout: connTimeoutInSecs * time.Second}
 	nginxClient, err := nginx.NewNginxClient(httpClient, commonConfig.APIEndpoint)
-
 	if err != nil {
 		log.Printf("Couldn't create NGINX client: %v", err)
 		os.Exit(10)
@@ -102,7 +103,6 @@ func main() {
 	for {
 		for _, upstream := range upstreams {
 			ips, err := cloudProviderClient.GetPrivateIPsForScalingGroup(upstream.ScalingGroup)
-
 			if err != nil {
 				log.Printf("Couldn't get the IP addresses for %v: %v", upstream.ScalingGroup, err)
 				continue