Added chart, auto-build and updated dockerfile

.github/workflows/build-and-push.yml

@@ -0,0 +1,61 @@
+name: Build and Push Docker Image
+
+on:
+  schedule:
+    - cron: '0 0 * * 0' # Runs every Sunday at midnight
+  workflow_dispatch: # Allows manual trigger
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v2
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.repository_owner }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Get latest snmpd version
+      id: get-version
+      run: |
+        latest_version=$(curl -s "https://sourceforge.net/projects/net-snmp/files/net-snmp/" | grep -Po 'href="\/projects\/net-snmp\/files\/net-snmp\/\K[0-9]+\.[0-9]+\.[0-9]+' | sort -V | tail -1)
+        echo "latest_version=${latest_version}" >> $GITHUB_ENV
+        major_version=$(echo $latest_version | cut -d'.' -f1)
+        minor_version=$(echo $latest_version | cut -d'.' -f1-2)
+        echo "major_version=${major_version}" >> $GITHUB_ENV
+        echo "minor_version=${minor_version}" >> $GITHUB_ENV
+
+    - name: Build Docker image
+      run: |
+        docker build --build-arg SNMPD_VERSION=${{ env.latest_version }} -t ghcr.io/${{ github.repository_owner }}/snmpd:${{ env.latest_version }} .
+
+    - name: Tag Docker image
+      run: |
+        docker tag ghcr.io/${{ github.repository_owner }}/snmpd:${{ env.latest_version }} ghcr.io/${{ github.repository_owner }}/snmpd:latest
+        docker tag ghcr.io/${{ github.repository_owner }}/snmpd:${{ env.latest_version }} ghcr.io/${{ github.repository_owner }}/snmpd:${{ env.major_version }}
+        docker tag ghcr.io/${{ github.repository_owner }}/snmpd:${{ env.latest_version }} ghcr.io/${{ github.repository_owner }}/snmpd:${{ env.minor_version }}
+
+    - name: Push Docker image
+      run: |
+        docker push ghcr.io/${{ github.repository_owner }}/snmpd:${{ env.latest_version }}
+        docker push ghcr.io/${{ github.repository_owner }}/snmpd:latest
+        docker push ghcr.io/${{ github.repository_owner }}/snmpd:${{ env.major_version }}
+        docker push ghcr.io/${{ github.repository_owner }}/snmpd:${{ env.minor_version }}
+
+    - name: Tag the repository with the latest version
+      run: |
+        git config --global user.name "github-actions[bot]"
+        git config --global user.email "github-actions[bot]@users.noreply.github.com"
+        git tag ${latest_version}
+        git push origin ${latest_version}

Dockerfile

@@ -1,35 +1,41 @@
-FROM alpine:latest
-
-MAINTAINER Troy Kelly <troy.kelly@really.ai>
-
-# Build-time metadata as defined at http://label-schema.org
-ARG BUILD_DATE
-ARG VCS_REF
-ARG VERSION
-LABEL org.label-schema.build-date=$BUILD_DATE \
-      org.label-schema.name="Docker image to provide the net-snmp daemon" \
-      org.label-schema.description="Provides snmpd for CoreOS and other small footprint environments without package managers" \
-      org.label-schema.url="https://really.ai/about/opensource" \
-      org.label-schema.vcs-ref=$VCS_REF \
-      org.label-schema.vcs-url="https://github.com/reallyreally/docker-snmpd" \
-      org.label-schema.vendor="Really Really, Inc." \
-      org.label-schema.version=$VERSION \
-      org.label-schema.schema-version="1.0"
+# Use a specific version of Debian to ensure compatibility
+FROM debian:buster-slim
+
+ARG SNMPD_VERSION=5.9.4
 
 EXPOSE 161 161/udp
 
-RUN apk add --update --no-cache linux-headers alpine-sdk curl findutils sed && \
-  mkdir -p /etc/snmp && \
-  curl -L "https://sourceforge.net/projects/net-snmp/files/5.4.5-pre-releases/net-snmp-5.4.5.rc1.tar.gz/download" -o net-snmp.tgz && \
-  tar zxvf net-snmp.tgz && \
-  cd net-snmp-* && \
-  find . -type f -print0 | xargs -0 sed -i 's/\"\/proc/\"\/host_proc/g' && \
-  ./configure --prefix=/usr/local --disable-ipv6 --disable-snmpv1 --with-defaults && \
-  make && \
-  make install && \
-  cd .. && \
-  rm -Rf ./net-snmp* && \
-  apk del linux-headers alpine-sdk curl findutils sed
+# Install build dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    curl \
+    ca-certificates \
+    libssl-dev \
+    libperl-dev \
+    libwrap0-dev \
+    libreadline-dev \
+    libsnmp-dev \
+    file
+
+# Download and extract net-snmp
+RUN mkdir -p /etc/snmp \
+    && curl -L "https://sourceforge.net/projects/net-snmp/files/net-snmp/$SNMPD_VERSION/net-snmp-$SNMPD_VERSION.tar.gz/download" -o net-snmp.tgz \
+    && tar zxvf net-snmp.tgz \
+    && rm net-snmp.tgz
+
+# Build and install net-snmp
+RUN cd net-snmp-$SNMPD_VERSION \
+    && find . -type f -print0 | xargs -0 sed -i 's/\"\/proc/\"\/host_proc/g' \
+    && ./configure --prefix=/usr/local --disable-ipv6 --disable-snmpv1 --with-defaults \
+    && make \
+    && make install \
+    && cd .. \
+    && rm -rf net-snmp-$SNMPD_VERSION
+
+# Remove build dependencies to keep the image size small
+RUN apt-get purge -y --auto-remove \
+    build-essential \
+    curl
 
 COPY snmpd.conf /etc/snmp
 

helm/snmpd/Chart.yaml

@@ -0,0 +1,6 @@
+apiVersion: v2
+name: snmpd
+appVersion: "5.9.4"
+version: "1.0.0"
+type: application
+description: A Helm chart for deploying snmpd as a DaemonSet

helm/snmpd/templates/configmap.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: snmpd-config
+data:
+  snmpd.conf: |-
+{{ .Values.config.snmpdConfig | indent 4 }}

helm/snmpd/templates/daemonset.yaml

@@ -0,0 +1,38 @@
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: snmpd-daemonset
+spec:
+  selector:
+    matchLabels:
+      app: snmpd
+  template:
+    metadata:
+      labels:
+        app: snmpd
+    spec:
+      nodeSelector:
+        {{- toYaml .Values.nodeSelector | nindent 8 }}
+      containers:
+      - name: snmpd
+        image: {{ .Values.image.repository }}:{{ .Values.image.tag }}
+        imagePullPolicy: {{ .Values.image.pullPolicy }}
+        ports:
+        {{- range .Values.ports }}
+        - name: {{ .name }}
+          containerPort: {{ .containerPort }}
+          hostPort: {{ .hostPort }}
+          protocol: {{ .protocol }}
+        {{- end }}
+        volumeMounts:
+        - name: snmpd-config
+          mountPath: /etc/snmp/snmpd.conf
+          subPath: snmpd.conf
+        securityContext:
+          runAsUser: 0
+          runAsGroup: 0
+          allowPrivilegeEscalation: true
+      volumes:
+      - name: snmpd-config
+        configMap:
+          name: snmpd-config

helm/snmpd/templates/service.yaml

@@ -0,0 +1,25 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: snmpd-service
+spec:
+  selector:
+    app: snmpd
+  ports:
+  - name: snmp-tcp
+    port: 161
+    protocol: TCP
+    nodePort: 3161
+  - name: snmp-trap-tcp
+    port: 162
+    protocol: TCP
+    nodePort: 3162
+  - name: snmp-udp
+    port: 161
+    protocol: UDP
+    nodePort: 3161
+  - name: snmp-trap-udp
+    port: 162
+    protocol: UDP
+    nodePort: 3162
+  type: NodePort

helm/snmpd/values.yaml

@@ -0,0 +1,36 @@
+image:
+  repository: ghcr.io/inputobject2/snmpd:latest
+  tag: latest
+  pullPolicy: IfNotPresent
+
+config:
+  snmpdConfig: |
+    # Change "public" on the line below to your preferred SNMP community string
+    com2sec readonly  default         public
+
+    group MyROGroup v2c        readonly
+    view all    included  .1                               80
+    access MyROGroup ""      any       noauth    exact  all    none   none
+
+    syslocation Rack, Room, Building, City, Country [GPSX,Y]
+    syscontact Your Name <your@email.address>
+
+ports:
+  - name: snmp-tcp
+    containerPort: 161
+    hostPort: 161
+    protocol: TCP
+  - name: snmp-trap-tcp
+    containerPort: 162
+    hostPort: 162
+    protocol: TCP
+  - name: snmp-udp
+    containerPort: 161
+    hostPort: 161
+    protocol: UDP
+  - name: snmp-trap-udp
+    containerPort: 162
+    hostPort: 162
+    protocol: UDP
+
+nodeSelector: {}