BREAKING CHANGE: disable prometheus temporarily

the exporter doesn't build on crystal 1.8 and we aren't using
prometheus, so it's easier to disable for now.

Dockerfile

@@ -4,9 +4,8 @@ FROM ${BASE_IMAGE}:${ALPINE_VERSION}
 MAINTAINER "f <f@sutty.nl>"
 ARG KNOT_VERSION=3.1.8
 
-RUN apk add --no-cache knot~${KNOT_VERSION} knot-prometheus-exporter daemonize
+RUN apk add --no-cache knot~${KNOT_VERSION}
 COPY ./monit.conf /etc/monit.d/knot.conf
-COPY ./prometheusd.sh /usr/local/bin/prometheusd
 
 EXPOSE 53
 EXPOSE 53/udp

monit.conf

@@ -4,7 +4,3 @@ check process knot with pidfile /tmp/knot.pid
   if 5 restarts within 8 cycles then alert
   if failed port 53 type udp protocol dns for 3 times within 5 cycles then restart
   if failed port 53 type tcp protocol dns for 3 times within 5 cycles then restart
-
-check process prometheus with pidfile /tmp/prometheus.pid
-  start program = "/usr/local/bin/prometheusd start"
-   stop program = "/usr/local/bin/prometheusd stop"

prometheusd.sh

@@ -1,16 +0,0 @@
-#!/bin/sh
-set -e
-
-STATS=${STATS:-/tmp/stats.yaml}
-pid=/tmp/prometheus.pid
-
-case $1 in
-  start)
-    test -f $pid && echo "prometheus-exporter already running"
-    daemonize -c /tmp -p $pid -l $pid -u knot /usr/local/bin/syslogize /usr/bin/knot-prometheus-exporter ${STATS}
-    ;;
-  stop)
-    test -f $pid && cat $pid | xargs -r kill || true
-    rm -f $pid
-    ;;
-esac