Add blackbox_exporter

prometheus/exporters/blackbox.sls

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+{% from "prometheus/map.jinja" import prometheus with context %}
+{%- set version_path = prometheus.exporters.blackbox.install_dir ~ "/blackbox_exporter-" ~ prometheus.exporters.blackbox.version %}
+
+include:
+  - prometheus.user
+
+blackbox_exporter_tarball:
+  archive.extracted:
+    - name: {{ prometheus.exporters.blackbox.install_dir }}
+    - source: {{ prometheus.exporters.blackbox.source }}
+    - source_hash: {{ prometheus.exporters.blackbox.source_hash }}
+    - archive_format: tar
+    - if_missing: {{ version_path }}
+
+blackbox_exporter_bin_link:
+  file.symlink:
+    - name: /usr/bin/blackbox_exporter
+    - target: {{ version_path }}/blackbox_exporter
+    - require:
+      - archive: blackbox_exporter_tarball
+
+blackbox_exporter_defaults:
+  file.managed:
+    - name: /etc/default/blackbox_exporter
+    - source: salt://prometheus/files/default-blackbox_exporter.jinja
+    - template: jinja
+    - defaults:
+        config_file: {{ prometheus.exporters.blackbox.args.config_file }}
+
+blackbox_exporter_service_unit:
+  file.managed:
+{%- if grains.get('init') == 'systemd' %}
+    - name: /etc/systemd/system/blackbox_exporter.service
+    - source: salt://prometheus/files/blackbox_exporter.systemd.jinja
+{%- elif grains.get('init') == 'upstart' %}
+    - name: /etc/init/blackbox_exporter.conf
+    - source: salt://prometheus/files/blackbox_exporter.upstart.jinja
+{%- endif %}
+    - require_in:
+      - file: blackbox_exporter_service
+
+blackbox_exporter_service:
+  service.running:
+    - name: blackbox_exporter
+    - enable: True
+    - reload: True
+    - watch:
+      - file: blackbox_exporter_defaults

prometheus/files/blackbox_exporter.systemd.jinja

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+[Unit]
+Description=Prometheus blackbox exporter
+Documentation=https://github.com/prometheus/blackbox_exporter
+Wants=basic.target
+After=basic.target network.target
+
+[Service]
+User=prometheus
+Group=prometheus
+EnvironmentFile=/etc/default/blackbox_exporter
+ExecStart=/usr/bin/blackbox_exporter $ARGS
+ExecReload=/bin/kill -HUP $MAINPID
+KillMode=process
+Restart=always
+RestartSec=42s
+
+[Install]
+WantedBy=multi-user.target

prometheus/files/blackbox_exporter.upstart.jinja

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+# Prometheus Blackbox exporter (Upstart unit)
+description "Prometheus Blackbox exporter"
+start on runlevel [2345]
+stop on runlevel [06]
+
+env BLACKBOX_EXPORTER=/usr/bin/blackbox_exporter
+env USER=prometheus
+env GROUP=prometheus
+env DEFAULTS=/etc/default/blackbox_exporter
+env RUNDIR=/var/run/blackbox_exporter
+env PID_FILE=/var/run/blackbox_exporter/blackbox_exporter.pid
+pre-start script
+  [ -e $DEFAULTS ] && . $DEFAULTS
+
+  mkdir -p $RUNDIR           || true
+  chmod 0750 $RUNDIR         || true
+  chown $USER:$GROUP $RUNDIR || true
+end script
+
+script
+    # read settings like GOMAXPROCS from "/etc/default/blackbox_exporter", if available.
+    [ -e $DEFAULTS ] && . $DEFAULTS
+
+    export GOMAXPROCS=${GOMAXPROCS:-2}
+    exec start-stop-daemon -c $USER -g $GROUP -p $PID_FILE -x $BLACKBOX_EXPORTER -S -- $ARGS
+end script
+
+respawn
+respawn limit 10 10
+kill timeout 10

prometheus/files/default-blackbox_exporter.jinja

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+# Set the command-line arguments to pass to the blackbox_exporter service.
+ARGS="-config.file {{config_file}}"
+
+# Blackbox exporter supports the following options:
+#   -config.file string
+#      Blackbox exporter configuration file name.
+#        (default "/etc/prometheus/blackbox_exporter.yml)