feat: Prometheus metrics removed (#3)

.github/settings.yml

@@ -1,7 +1,7 @@
 # https://developer.github.com/v3/repos/#edit
 repository:
   name: docker-dns
-  description: "ISC BIND9 DNS server with built-in metrics for Prometheus."
+  description: "ISC BIND9 DNS server."
   homepage: https://homecentr.github.io/
   private: false
   has_issues: true

Dockerfile

@@ -1,31 +1,14 @@
-FROM golang as metrics-build
-
-RUN go get github.com/digitalocean/bind_exporter && \
-    cd "/go/src/github.com/digitalocean/bind_exporter" && \
-    make
-
-RUN ls /go/src/github.com/digitalocean/bind_exporter
-
 FROM alpine
 
 LABEL maintainer="Lukas Holota <me@lholota.com>"
 
 RUN apk upgrade --no-cache && \
-    apk add --no-cache bind supervisor && \
-    apk add --virtual tmp_pip py-pip && \
-    pip install supervisor-stdout && \
-    apk del tmp_pip && \
+    apk add --no-cache bind && \
     mkdir /config-default
 
-COPY ./scripts/exit-event-listener.py /usr/local/bin/exit-event-listener
-COPY --from=metrics-build /go/src/github.com/digitalocean/bind_exporter/bind_exporter /usr/bin/bind_exporter
-
-COPY ./config/supervisord.conf /etc/supervisord.conf
-
 COPY ./config/named.conf /config-default/
 COPY ./config/healthcheck.conf /config-default/
 COPY ./config/healthcheck.zone /config-default/
-COPY ./config/statistics.conf /config-default/
 
 HEALTHCHECK --interval=10s --timeout=3s --start-period=10s --retries=3 CMD [ "nslookup", "ns1.bind9-healthcheck", "127.0.0.1" ]
 
@@ -38,7 +21,7 @@ EXPOSE 53/tcp 53/udp
 # Dynamic updates from DHCP server
 EXPOSE 953/tcp
 
-# Prometheus metrics
-EXPOSE 9000
+# Default statistics port, not opened by default, must be configured
+EXPOSE 8888/tcp
 
-ENTRYPOINT ["supervisord", "-n", "--configuration", "/etc/supervisord.conf"]
+ENTRYPOINT ["/usr/sbin/named", "-f", "-g", "-4", "-c", "/config-default/named.conf"]

README.md

@@ -1,5 +1,5 @@
 # HomeCenter - DNS
-This container contains the [BIND9 DNS server](https://www.isc.org/bind/) along with a metrics endpoint compatible with [Prometheus](https://prometheus.io/).
+This container contains the [BIND9 DNS server](https://www.isc.org/bind/).
 
 ## Project status
 
@@ -41,4 +41,4 @@ See the `example/named.conf` for a quickstart or [BIND9 documentation](https://k
 |------|-------------|
 | 53/tcp | DNS protocol over TCP |
 | 53/udp | DNS protocol over UDP |
-| 9000/tcp | HTTP endpoint with Prometheus metrics |
+| 8888/tcp | Default port for statistics, is not opened by default, must be configured in named.conf |

config/named.conf

@@ -1,4 +1,2 @@
 include "/config/named.conf";
-
-include "/config-default/statistics.conf";
 include "/config-default/healthcheck.conf";