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Added chart, auto-build and updated dockerfile
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‎.github/workflows/build-and-push.yml

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

‎Dockerfile

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

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apiVersion: v2
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name: snmpd
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appVersion: "5.9.4"
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version: "1.0.0"
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type: application
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description: A Helm chart for deploying snmpd as a DaemonSet

‎helm/snmpd/templates/configmap.yaml

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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: {{ .Chart.Name }}-config
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data:
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snmpd.conf: |-
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{{ .Values.config.snmpdConfig | indent 4 }}

‎helm/snmpd/templates/daemonset.yaml

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apiVersion: apps/v1
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kind: DaemonSet
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metadata:
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name: {{ .Chart.Name }}
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spec:
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selector:
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matchLabels:
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app: snmpd
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template:
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metadata:
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labels:
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app: snmpd
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annotations:
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checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
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spec:
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hostNetwork: true
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nodeSelector:
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{{- toYaml .Values.nodeSelector | nindent 8 }}
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containers:
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- name: snmpd
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image: {{ .Values.image.repository }}:{{ .Values.image.tag }}
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imagePullPolicy: {{ .Values.image.pullPolicy }}
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ports:
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{{- range .Values.ports }}
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- name: {{ .name }}
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containerPort: {{ .containerPort }}
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hostPort: {{ .hostPort }}
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protocol: {{ .protocol }}
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{{- end }}
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volumeMounts:
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- name: snmpd-config
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mountPath: /etc/snmp/snmpd.conf
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subPath: snmpd.conf
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- name: host-proc
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mountPath: /host_proc
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securityContext:
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runAsUser: 0
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runAsGroup: 0
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allowPrivilegeEscalation: true
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volumes:
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- name: snmpd-config
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configMap:
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name: {{ .Chart.Name }}-config
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- name: host-proc
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hostPath:
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path: /proc

‎helm/snmpd/values.yaml

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image:
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repository: ghcr.io/inputobject2/snmpd
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tag: 5.9.4
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pullPolicy: IfNotPresent
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config:
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snmpdConfig: |
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# Change "public" on the line below to your preferred SNMP community string
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com2sec readonly default public
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group MyROGroup v2c readonly
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view all included .1 80
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access MyROGroup "" any noauth exact all none none
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syslocation Rack, Room, Building, City, Country [GPSX,Y]
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syscontact support@example.com
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# Load MIB modules
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mibs +HOST-RESOURCES-MIB
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mibs +UCD-SNMP-MIB
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ports:
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- name: snmp-tcp
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containerPort: 161
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hostPort: 161
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protocol: TCP
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- name: snmp-trap-tcp
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containerPort: 162
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hostPort: 162
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protocol: TCP
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- name: snmp-udp
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containerPort: 161
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hostPort: 161
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protocol: UDP
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- name: snmp-trap-udp
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containerPort: 162
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hostPort: 162
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protocol: UDP
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nodeSelector: {}

‎hooks/build

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