doc: add sample systemd unit

README.md

@@ -199,7 +199,7 @@ make test         | Runs the application unit tests
 
 1. Copy the compiled binary (bin/clammit), either into your project repository, or to an installation area.
 2. Edit the configuration file as appropriate.
-3. Configure your auto-start mechanism, be it God or init.d
+3. Configure your auto-start mechanism, be it God or init.d. An example systemd unig is provided.
 4. Configure the upstream webserver to forward appropriate POST requests to clammit.
 
 ## API

clammit.service.example

@@ -0,0 +1,33 @@
+[Unit]
+Description=Clammit - ClamAV HTTP filter
+After=network.target syslog.target
+
+[Install]
+WantedBy=multi-user.target
+
+[Service]
+User=clammit
+Group=clammit
+Type=simple
+
+ExecStart=/usr/local/sbin/clammit -config=/etc/clammit.conf
+KillSignal=SIGTERM
+KillMode=control-group
+
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=clammit
+
+# Wait few secs when restarting after a failure
+RestartSec=2
+# Always-on
+Restart=always
+
+PrivateTmp=true
+PrivateDevices=true
+
+ProtectSystem=full
+
+ReadOnlyDirectories=/
+ReadWriteDirectories=/var/log/clammit
+ReadWriteDirectories=/var/run/clammit