update systemd services; include make directives and docs for use

Makefile

@@ -103,6 +103,18 @@ install:
 	install -C ./lotus-storage-miner /usr/local/bin/lotus-storage-miner
 	install -C ./lotus-seal-worker /usr/local/bin/lotus-seal-worker
 
+install-services:
+	install -C -m 0644 ./scripts/lotus-daemon.service /etc/systemd/system/lotus-daemon.service
+	install -C -m 0644 ./scripts/lotus-miner.service /etc/systemd/system/lotus-miner.service
+	systemctl daemon-reload
+	@echo
+	@echo "lotus and lotus-miner services installed. Don't forget to 'systemctl enable lotus|lotus-miner' for it to be enabled on startup."
+
+clean-services:
+	rm -f /etc/systemd/system/lotus-daemon.service
+	rm -f /etc/systemd/system/lotus-miner.service
+	systemctl daemon-reload
+
 # TOOLS
 
 lotus-seed: $(BUILD_DEPS)

documentation/en/install-systemd-services.md

@@ -0,0 +1,29 @@
+# Lotus and Miner as a systemd service
+
+Lotus is capable of running as a systemd service daemon. You can find installable service files for systemd in the [lotus repo](https://github.com/filecoin-project/lotus/tree/master/scripts) as files with `.service` extension. In order to install these service files, you can copy these `.service` files to the default systemd service path.
+
+## Installing via `make`
+
+NOTE: Before using lotus and lotus-miner as systemd services, don't forget to `sudo make install` to ensure the binaries are accessible by the root user.
+
+If your host uses the default systemd service path, it can be installed with `sudo make install-services`:
+
+```sh
+$ sudo make install-services
+```
+
+## Interacting with service logs
+
+Logs from the services can be reviewed using `journalctl`.
+
+### Follow logs from a specific service unit
+
+```sh
+$ sudo journalctl -u lotus-daemon -f
+```
+
+### View logs in reverse order
+
+```sh
+$ sudo journalctl -u lotus-miner -r
+```

scripts/lotus-daemon.service

@@ -6,6 +6,10 @@ After=network.target
 ExecStart=/usr/local/bin/lotus daemon
 Environment=GOLOG_FILE="/var/log/lotus-daemon"
 Environment=GOLOG_LOG_FMT="json"
+MemoryAccounting=true
+MemoryHigh=8G
+MemoryMax=10G
+LimitNOFILE=8192:10240
 
 [Install]
 WantedBy=multiuser.target