feat: add prometheus exporter

.github/workflows/main.yaml

@@ -49,4 +49,4 @@ jobs:
         uses: stefanzweifel/git-auto-commit-action@v5
         with:
           commit_message: "${{ vars.SKIP_CI_PREFIX }} Push updated changelog"
-          file_pattern: "\\.changes/* CHANGELOG.md"
+          file_pattern: "\\.changes/* CHANGELOG.md .changie.yaml"

Dockerfile

@@ -1,5 +1,9 @@
 FROM alpine:3.21
 
+ARG TARGETOS
+ARG TARGETARCH
+ARG TARGETPLATFORM
+
 LABEL architecture="$TARGETPLATFORM" \
     license="beerware" \
     name="keepalived" \
@@ -14,13 +18,18 @@ RUN apk add --no-cache \
     && addgroup -S keepalived_script \
     && adduser -S -s /sbin/nologin -G keepalived_script -H keepalived_script
 
-ENV STATE BACKUP
+ARG KEEPALIVED_EXPORTER_VERSION=1.4.0
-ENV INTERFACE enp3s0
+RUN wget -O /usr/local/bin/keepalived-exporter.tar.gz https://github.com/mehdy/keepalived-exporter/releases/download/v${KEEPALIVED_EXPORTER_VERSION}/keepalived-exporter_${KEEPALIVED_EXPORTER_VERSION}_${TARGETOS}_${TARGETARCH}.tar.gz && \
-ENV PRIORITY 200
+    tar -xvf /usr/local/bin/keepalived-exporter.tar.gz -C /usr/local/bin/ keepalived-exporter && \
-ENV PASSWORD ""
+    rm -f /usr/local/bin/keepalived-exporter.tar.gz
-ENV SRC_IP ""
+
-ENV PEER_IP_0 ""
+ENV STATE=BACKUP
-ENV PEER_IP_1 ""
+ENV INTERFACE=enp3s0
+ENV PRIORITY=200
+ENV PASSWORD=""
+ENV SRC_IP=""
+ENV PEER_IP_0=""
+ENV PEER_IP_1=""
 
 COPY --chmod=750 --chown=keepalived_script:keepalived_script check_apiserver.sh /usr/lib/keepalived/scripts/chk_kube_apiserver.sh
 COPY keepalived.template.conf /etc/keepalived/keepalived.template.conf

Makefile

@@ -1,6 +1,7 @@
 .PHONY: imageKeepalived
 
-REGISTRY_IP=container.localdomain
+REGISTRY_NAME=container.localdomain
+REGISTRY_PORT=443
 # linux/arm/v7
 # linux/arm/v6
 # linux/arm64
@@ -12,10 +13,10 @@ VERBOSITY=debug
 ## build
 
 imageKeepalived:
-	docker manifest rm $(REGISTRY_IP):5000/keepalived-k8s:latest || true
+	docker manifest rm $(REGISTRY_NAME):$(REGISTRY_PORT)/keepalived-k8s:latest || true
-	docker-multi-arch-builder build -n keepalived-k8s --platforms $(PLATFORM) -v $(VERBOSITY)
+	docker-multi-arch-builder build -n keepalived-k8s --platforms $(PLATFORM) -v $(VERBOSITY) --registry $(REGISTRY_NAME) --port $(REGISTRY_PORT)
 
 ## management
 
 status:
-	@curl -s $(REGISTRY_IP):5000/v2/_catalog | jq
+	@curl -ks -H "Host: $(REGISTRY_NAME)" https://$(REGISTRY_NAME):$(REGISTRY_PORT)/v2/_catalog | jq

init.sh

@@ -2,4 +2,8 @@
 
 envsubst < /etc/keepalived/keepalived.template.conf > /etc/keepalived/keepalived.conf
 
+keepalived-exporter -ka.pid-path /var/run/keepalived/keepalived.pid -web.listen-address :9187 -web.telemetry-path /metrics &
+mkdir -p /var/run/keepalived
+echo "$!" > /var/run/keepalived/exporter.pid
+
 exec "$@"