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[Unit]
Description=Monitoring system and time series database
Documentation=https://prometheus.io/docs/introduction/overview/ man:prometheus(1)
After=time-sync.target

[Service]
Restart=on-failure
User=prometheus
ExecStart=/usr/bin/prometheus --config.file=/etc/prometheus/prometheus.yml --storage.tsdb.path=/var/lib/prometheus/metrics2/ --storage.tsdb.retention.time={{ prometheus_server_retention }}{% if prometheus_server_web_external_url is defined %} --web.external-url={{ prometheus_server_web_external_url }}{% endif %}{% if prometheus_server_auth_users is defined %} --web.config.file /etc/prometheus/prometheus-web.yml{% endif %} --web.listen-address={{ prometheus_server_web_listen_address }}
ExecReload=/bin/kill -HUP $MAINPID
TimeoutStopSec=20s
SendSIGKILL=no

# systemd hardening-options
AmbientCapabilities=
CapabilityBoundingSet=
DeviceAllow=/dev/null rw
DevicePolicy=strict
LimitMEMLOCK=0
LimitNOFILE=8192
LockPersonality=true
MemoryDenyWriteExecute=true
NoNewPrivileges=true
PrivateDevices=true
PrivateTmp=true
PrivateUsers=true
ProtectControlGroups=true
ProtectHome=true
ProtectKernelModules=true
ProtectKernelTunables=true
ProtectSystem=full
RemoveIPC=true
RestrictNamespaces=true
RestrictRealtime=true
SystemCallArchitectures=native

[Install]
WantedBy=multi-user.target