Docs for starting with individual units. #21

docs/installation-production.md

@@ -8,6 +8,8 @@
     - [Configuration](#configuration)
     - [Running Engine](#running-engine)
         - [Running with Systemd](#running-with-systemd)
+            - [Combined Unit for Engine Core and Liquidsoap](#combined-unit-for-engine-core-and-liquidsoap)
+            - [Individual Units for Engine Core and Liquidsoap](#individual-units-for-engine-core-and-liquidsoap)
         - [Running with Supervisor](#running-with-supervisor)
     - [Logging](#logging)
     - [Read more](#read-more)
@@ -223,12 +225,13 @@ For this you can utilize either [Systemd](https://systemd.io/) or [Supervisor](h
 
 ### Running with Systemd
 
+
+#### Combined Unit for Engine Core and Liquidsoap
+
 Copy the unit file `/opt/aura/engine/config/systemd/aura-engine.service` to `/etc/systemd/system/`.
 
 This unit file starts engine-core and engine-liquidsoap within one command. Here Liquidsoap is started as
-as subprocess.
-
-> Please note not to use any other unit files in that directory yet. They are work in progress.
+as subprocess. For more fine-grained control the units in the next section are recommended instead.
 
 Now you'll need to reload the Systemd unit files
 
@@ -260,6 +263,38 @@ sudo systemctl restart aura-engine
 sudo systemctl status aura-engine
 ```
 
+#### Individual Units for Engine Core and Liquidsoap
+
+Copy the unit files `/opt/aura/engine/config/systemd/aura-engine-lqs.service` and
+`/opt/aura/engine/config/systemd/aura-engine-core.service` to `/etc/systemd/system/`.
+
+Now you'll need to reload the Systemd unit files
+
+```shell
+sudo systemctl daemon-reload
+```
+
+**Start Liquidsoap and check its status**
+
+```shell
+sudo systemctl start aura-engine-lqs
+sudo systemctl status aura-engine-lqs
+```
+
+**Start Engine Core and check its status**
+
+```shell
+sudo systemctl start aura-engine-core
+sudo systemctl status aura-engine-core
+```
+
+**Use journalctl to observe the logs**
+
+```shell
+sudo journalctl -f
+```
+
+
 ### Running with Supervisor
 
 Now, given you are in the engine's home directory `/opt/aura/engine/`, simply type following to start