[Unit]
Description=Promethues node exporter textfile collector chrony

[Service]
Type=oneshot
Environment=TMPDIR=/var/lib/prometheus-node-exporter/textfile-collector
ExecStart=bash -o pipefail -c "/usr/local/share/prometheus-node-exporter/chrony | sponge /var/lib/prometheus-node-exporter/textfile-collector/chrony.prom"
TimeoutStartSec=30s

# systemd hardening-options
AmbientCapabilities=CAP_DAC_OVERRIDE
CapabilityBoundingSet=CAP_DAC_OVERRIDE
DeviceAllow=/dev/null rw
DevicePolicy=strict
LockPersonality=true
MemoryDenyWriteExecute=true
NoNewPrivileges=true
PrivateDevices=true
PrivateTmp=true
ProtectControlGroups=true
ProtectHome=true
ProtectKernelModules=true
ProtectKernelTunables=true
ProtectSystem=strict
ReadWritePaths=/var/lib/prometheus-node-exporter/textfile-collector /var/run/chrony
RemoveIPC=true
RestrictNamespaces=true
RestrictRealtime=true
RestrictAddressFamilies=AF_UNIX
SystemCallArchitectures=native

[Install]
WantedBy=multi-user.target