inital version

.gitea/workflows/docker-build.yml

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+name: build container icinga2-stallite
+on: 
+  push:
+    paths:
+      - 'Dockerfile'
+      - 'init.sh'
+
+defaults:
+  run:
+    working-directory: ./icinga2-satellite
+
+env:
+  REGISTRY_HOST: ${{ vars.AOIT_GIT_URL }}
+  CONTAINER_TAG: ${{ gitea.repository }}
+  CONTAINER_VERSION: latest
+  CONTAINER_NAME: deploy_test-${{ gitea.run_id }}
+
+jobs:
+  build:
+    runs-on: test
+    steps:
+      - name: clone repo
+        working-directory: ${{ gitea.workspace }}
+        run: git clone https://$TOKEN@$GIT_HOST/$GIT_REPO
+        env:
+          TOKEN: ${{ secrets.TOKEN_SVC_CI }}
+          GIT_HOST: ${{ vars.AOIT_GIT_URL }}
+          GIT_REPO: ${{ gitea.repository }}
+      - name: docker build
+        run: docker build -t $REGISTRY_HOST/$CONTAINER_TAG:$CONTAINER_VERSION .
+      - name: test docker container comes up
+        run: | 
+          docker run --rm -d --name $CONTAINER_NAME -p $TEST_PORT:$TEST_PORT -e ICINGA2_API_USER_ROOT_PASS=$TMP_API_PASS $REGISTRY_HOST/$CONTAINER_TAG:$CONTAINER_VERSION
+          sleep $DEPLOY_TIME
+          docker exec $CONTAINER_NAME icinga2 -C -X
+        env:
+          DEPLOY_TIME: 15
+      - name: cleanup container
+        if: always()
+        run: docker kill $CONTAINER_NAME
+      - name: upload container
+        run: | 
+          docker login $REGISTRY_HOST -u $REGISTRY_USER -p $REGISTRY_PASS
+          docker push $REGISTRY_HOST/$CONTAINER_TAG:$CONTAINER_VERSION
+          docker logout
+        env:
+          REGISTRY_USER: ${{ secrets.REGISTRY_USER }}
+          REGISTRY_PASS: ${{ secrets.TOKEN_SVC_DOCKER }}
+      - name: docker cleanup image and build cache
+        run: | 
+          docker image rm $REGISTRY_HOST/$CONTAINER_TAG:$CONTAINER_VERSION
+          docker builder prune -af

Dockerfile

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+FROM debian:bookworm-slim
+LABEL maintainer="docker@ao-it.net"
+
+## prepare requirements
+RUN ["bash", "-exo", "pipefail", "-c", "\
+    export DEBIAN_FRONTEND=noninteractive ; \
+    apt update ; \ 
+    apt install -y wget gnupg ; \
+    wget -O - https://packages.icinga.com/icinga.key | \
+    gpg --dearmor -o /usr/share/keyrings/icinga-archive-keyring.gpg ; \
+    source /etc/os-release ; \
+    echo \"deb [signed-by=/usr/share/keyrings/icinga-archive-keyring.gpg] https://packages.icinga.com/debian icinga-${VERSION_CODENAME} main\" > /etc/apt/sources.list.d/${VERSION_CODENAME}-icinga.list ; \
+    echo \"deb-src [signed-by=/usr/share/keyrings/icinga-archive-keyring.gpg] https://packages.icinga.com/debian icinga-${VERSION_CODENAME} main\" >> /etc/apt/sources.list.d/${VERSION_CODENAME}-icinga.list ; \
+    apt clean all ; \
+    rm -vrf /var/lib/apt/lists/* "]
+
+## install icinga2 
+RUN ["bash", "-exo", "pipefail", "-c", "\
+    export DEBIAN_FRONTEND=noninteractive ; \
+    apt update ; \
+    apt install -y icinga2 monitoring-plugins ; \
+    mkdir -p /run/icinga2 ; \
+    chown nagios: /run/icinga2 ; \
+    apt clean all ; \
+    rm -vrf /var/lib/apt/lists/* "]
+
+## create persistend data store
+RUN ["bash", "-exo", "pipefail", "-c", "\
+    mkdir -p /var/lib/icinga2/certs ; \
+    chown -R nagios:nagios /var/lib/icinga2/certs ; \
+    mkdir -p /data ; \
+    mkdir -p /data-init/etc/ ; \
+    mkdir -p /data-init/var/ ; \
+    mkdir -p /data-init/plugins ; \
+    mv /etc/icinga2 /data-init/etc/ ; \
+    mv /var/lib/icinga2 /data-init/var/ ; \
+    mv /usr/lib/nagios/plugins /data-init/ ; \
+    ln -vs /data/etc/icinga2 /etc/icinga2 ; \
+    ln -vs /data/var/icinga2 /var/lib/icinga2 ; \
+    ln -vs /data/plugins /usr/lib/nagios/plugins "]
+
+COPY init.sh /root/init.sh
+    
+EXPOSE 5665
+VOLUME ["/data"]
+WORKDIR /data
+USER root
+
+## run init.sh always!
+ENTRYPOINT [ "bash", "/root/init.sh" ]
+CMD [ "/usr/sbin/icinga2", "daemon" ]

init.sh

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+#!/bin/bash
+
+## init icinga if need
+if [ -z "$(ls -A /data)" ]; then
+    ## init icinga config files
+	echo init icinga2 config
+	cp -ax /data-init/* /data
+	rm -rf /data-init
+    ## create satellite cert 
+    if [ ! -z "$ICINGA2_SATELLITE_CN" ]; then
+        echo generate new cert
+        icinga2 pki new-cert --cn $ICINGA2_SATELLITE_CN \
+        --key /var/lib/icinga2/certs/$ICINGA2_SATELLITE_CN.key \
+        --cert /var/lib/icinga2/certs/$ICINGA2_SATELLITE_CN.crt
+    fi
+    
+    ## get parent cert
+    if [ ! -z "$ICINGA2_PARENT_HOST" ]; then
+        echo get parent cert
+        icinga2 pki save-cert \
+        --trustedcert /var/lib/icinga2/certs/trusted-parent.crt \
+        --host $ICINGA2_PARENT_HOST
+    fi
+
+    ## join parent
+    ### see: https://icinga.com/docs/icinga-2/latest/doc/06-distributed-monitoring/#node-setup
+    REQUIRED_VARS=("ICINGA2_PARENT_CN" "ICINGA2_PARENT_ZONE" "ICINGA2_PARENT_HOST" \
+        "ICINGA2_SATELLITE_CN" "ICINGA2_SATELLITE_ZONE" "ICINGA2_JOIN_TICKET" )
+    INIT_SATELLITE=true
+    echo check env var for auto setup
+    for VAR in "${REQUIRED_VARS[@]}"; do
+        if [ -z "${!VAR}" ]; then
+            echo "'$VAR' not set"
+            INIT_SATELLITE=false
+        fi
+    done
+    if [ "$INIT_SATELLITE" = true ]; then
+        echo init satellite
+        icinga2 node setup --ticket $ICINGA2_JOIN_TICKET \
+        --cn $ICINGA2_SATELLITE_CN \
+        --endpoint $ICINGA2_PARENT_CN \
+        --zone $ICINGA2_SATELLITE_ZONE \
+        --parent_zone $ICINGA2_PARENT_ZONE \
+        --parent_host $ICINGA2_PARENT_HOST \
+        --trustedcert /var/lib/icinga2/certs/trusted-parent.crt \
+        --accept-commands --accept-config --disable-confd
+    else
+        echo satellite not init must do manually
+    fi
+fi
+
+
+# run CMD
+exec "$@"