[Unit]
Description=CSLab Blackbox exporter for Prometheus
Documentation=https://prometheus.io/docs/introduction/overview/
Conflicts=prometheus-blackbox-exporter.service
After=cslab-boot-timesync.service
Wants=cslab-boot-timesync.service

[Service]
Restart=always
#User=prometheus
DynamicUser=yes
#EnvironmentFile=/etc/default/prometheus-blackbox-exporter
#ExecStart=/usr/bin/prometheus-blackbox-exporter $ARGS
# CSLab: This history limit may turn out to be absurdly too large. We'll
# see.
ExecStart=/opt/prometheus/blackbox_exporter/blackbox_exporter \
	--config.file /etc/prometheus/blackbox.yml \
	--web.listen-address=127.0.0.1:9115 \
	--web.external-url=https://csmetrics.cs.toronto.edu/blackbox/ \
	--web.route-prefix=/ \
	--history.limit=2000
#	--history.limit=6000

#	--history.limit=2000

# CSLab: inexplicably missing from the standard version.
ExecReload=/bin/kill -HUP $MAINPID

# CSLab: Permit the blackbox exporter to use ping without giving it full
# root powers.
CapabilityBoundingSet=CAP_NET_RAW
AmbientCapabilities=CAP_NET_RAW

# Under some circumstances, Blackbox runs into the default limit and
# can use a huge one.
LimitNOFILE=102400

[Install]
WantedBy=multi-user.target