# /etc/systemd/system/gcp-heartbeat.service

[Service]
Type=simple
User=heartbeat
Group=heartbeat
WorkingDirectory=/opt/heartbeat
ExecStart=/usr/bin/python3 /opt/heartbeat/gcp_heartbeat_server.py --dns-port 0 --log /opt/heartbeat/logs/heartbeat.log
Restart=always
RestartSec=3
StartLimitIntervalSec=60
StartLimitBurst=5

StandardOutput=journal
StandardError=journal

NoNewPrivileges=true
PrivateTmp=true
ProtectSystem=strict
ProtectHome=true
ReadWritePaths=/opt/heartbeat/logs

[Install]
WantedBy=multi-user.target