feat: add nginx and apache Prometheus metrics exporters

.github/workflows/container-deploy.yml

@@ -88,7 +88,7 @@ jobs:
           echo "COMPOSE_HTTP_TIMEOUT=120" >> .env
           echo "COMPOSE_PROJECT_NAME=po" >> .env
           echo "COMPOSE_PATH_SEPARATOR=;" >> .env
-          echo "COMPOSE_FILE=docker-compose.yml;docker/prod.yml;docker/geolite2.yml" >> .env
+          echo "COMPOSE_FILE=docker-compose.yml;docker/prod.yml;docker/geolite2.yml;docker/monitor.yml" >> .env
 
           # Set App variables
           echo "TAG=sha-${{ github.sha }}" >> .env

conf/apache.conf

@@ -1,10 +1,7 @@
-# Apache 2.4 + mod_perl handles only the dynamic HTML generated pages
-# and CGI scripts.
-# Static files are served directly by the NGINX reverse proxy.
-
-LoadModule perl_module modules/mod_perl.so
+# LoadModule perl_module modules/mod_perl.so
 
 ServerAdmin contact@${PRODUCT_OPENER_DOMAIN}
+ServerName ${PRODUCT_OPENER_DOMAIN}
 
 PerlSwitches -I/opt/product-opener/lib -I/opt/perl/local/lib/perl5
 
@@ -46,6 +43,12 @@ PerlRequire /opt/product-opener/lib/startup_apache2.pl
 # log the X-Forwarded-For IP address (the client ip) in access_log
 LogFormat "%{X-Forwarded-For}i %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" proxy
 
+ExtendedStatus On
+<Location /server-status>
+    SetHandler server-status
+    Require all granted
+</Location>
+
 <Location /cgi>
   SetHandler perl-script
   PerlResponseHandler ModPerl::Registry

docker/monitor.yml

@@ -0,0 +1,22 @@
+version: "3.7"
+services:
+  apache_exporter:
+    image: solsson/prometheus-exporter-apache:latest
+    networks:
+      - webnet
+    command:
+      - --scrape_uri=http://backend/server-status?auto
+    ports:
+      - 9117:9117
+    depends_on:
+      - backend
+  nginx_exporter:
+    image: nginx/nginx-prometheus-exporter:0.9.0
+    networks:
+      - webnet
+    command:
+      - '-nginx.scrape-uri=http://frontend/nginx_status'
+    ports:
+      - 9113:9113
+    depends_on:
+      - frontend