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										 |  |  | [Unit] | 
					
						
							|  |  |  | Description=WALNUT IoT App Infrastructure | 
					
						
							|  |  |  | Documentation=https://git.daplie.com/Daplie/walnut.js | 
					
						
							|  |  |  | After=network-online.target | 
					
						
							|  |  |  | Wants=network-online.target systemd-networkd-wait-online.service | 
					
						
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							|  |  |  | [Service] | 
					
						
							|  |  |  | # Restart on crash (bad signal), and on 'clean' failure (error exit code) | 
					
						
							|  |  |  | # Allow up to 3 restarts within 10 seconds | 
					
						
							|  |  |  | # (it's unlikely that a user or properly-running script will do this) | 
					
						
							|  |  |  | Restart=on-failure | 
					
						
							|  |  |  | StartLimitInterval=10 | 
					
						
							|  |  |  | StartLimitBurst=3 | 
					
						
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							|  |  |  | # The v8 VM will output a "clean" for JavaScript errors. | 
					
						
							|  |  |  | # If we knew we were never going to accidentally exit cleanly | 
					
						
							|  |  |  | # we would use on-abnormal: | 
					
						
							|  |  |  | ; Restart=on-abnormal | 
					
						
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							|  |  |  | # User and group the process will run as | 
					
						
							|  |  |  | # (www-data is the de facto standard on most systems) | 
					
						
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										 |  |  | User=MY_USER | 
					
						
							|  |  |  | Group=MY_GROUP | 
					
						
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							|  |  |  | # If we need to pass environment variables in the future | 
					
						
							|  |  |  | ; Environment=GOLDILOCKS_PATH=/opt/walnut | 
					
						
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							|  |  |  | # Set a sane working directory, sane flags, and specify how to reload the config file | 
					
						
							|  |  |  | WorkingDirectory=/srv/www | 
					
						
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										 |  |  | ExecStart=/opt/walnut/bin/node /opt/walnut/core/bin/walnut.js --config=/etc/walnut/walnut.yml | 
					
						
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										 |  |  | ExecReload=/bin/kill -USR1 $MAINPID | 
					
						
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							|  |  |  | # Limit the number of file descriptors and processes; see `man systemd.exec` for more limit settings. | 
					
						
							|  |  |  | # We don't expected to use more than this. | 
					
						
							|  |  |  | LimitNOFILE=1048576 | 
					
						
							|  |  |  | LimitNPROC=64 | 
					
						
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							|  |  |  | # Use private /tmp and /var/tmp, which are discarded after the process stops. | 
					
						
							|  |  |  | PrivateTmp=true | 
					
						
							|  |  |  | # Use a minimal /dev | 
					
						
							|  |  |  | PrivateDevices=true | 
					
						
							|  |  |  | # Hide /home, /root, and /run/user. Nobody will steal your SSH-keys. | 
					
						
							|  |  |  | ProtectHome=true | 
					
						
							|  |  |  | # Make /usr, /boot, /etc and possibly some more folders read-only. | 
					
						
							|  |  |  | ProtectSystem=full | 
					
						
							|  |  |  | # … except TLS/SSL, ACME, and Let's Encrypt certificates | 
					
						
							|  |  |  | #   and /var/log/, because we want a place where logs can go. | 
					
						
							|  |  |  | #   This merely retains r/w access rights, it does not add any new. Must still be writable on the host! | 
					
						
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										 |  |  | ReadWriteDirectories=/etc/walnut /var/log/walnut /var/walnut /opt/walnut /srv/www | 
					
						
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							|  |  |  | # Note: in v231 and above ReadWritePaths has been renamed to ReadWriteDirectories | 
					
						
							|  |  |  | ; ReadWritePaths=/etc/walnut /var/log/walnut | 
					
						
							|  |  |  | ; | 
					
						
							|  |  |  | # The following additional security directives only work with systemd v229 or later. | 
					
						
							|  |  |  | # They further retrict privileges that can be gained. | 
					
						
							|  |  |  | # Note that you may have to add capabilities required by any plugins in use. | 
					
						
							|  |  |  | CapabilityBoundingSet=CAP_NET_BIND_SERVICE | 
					
						
							|  |  |  | AmbientCapabilities=CAP_NET_BIND_SERVICE | 
					
						
							|  |  |  | NoNewPrivileges=true | 
					
						
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							|  |  |  | # Caveat: Some plugins need additional capabilities. | 
					
						
							|  |  |  | # For example "upload" needs CAP_LEASE | 
					
						
							|  |  |  | ; CapabilityBoundingSet=CAP_NET_BIND_SERVICE CAP_LEASE | 
					
						
							|  |  |  | ; AmbientCapabilities=CAP_NET_BIND_SERVICE CAP_LEASE | 
					
						
							|  |  |  | ; NoNewPrivileges=true | 
					
						
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							|  |  |  | [Install] | 
					
						
							|  |  |  | WantedBy=multi-user.target |