added logrotate config dep & example to readme

README.md

@@ -11,6 +11,28 @@ tsig-keygen -a hmac-sha512 >> /etc/bind/keys.conf
 tsig-keygen -a hmac-sha512 rndc-key >> /etc/bind/keys.conf
 ```
 
+### Logrotate
+
+We want to print log to disk and have it managed by logrotate. Either comment out import of `named.conf.log` or make sure `logrotate` is installed and add following to file: `/etc/logrotate.d/bind.log`
+
+```
+/var/log/bind/bind.log
+{
+  rotate 90
+  daily
+  dateext
+  dateformat _%Y-%m-%d
+  missingok
+  create 644 bind bind
+  delaycompress
+  compress
+  notifyempty
+  postrotate
+    /bin/systemctl reload bind9
+  endscript
+}
+```
+
 ## Using as a template
 
 The main files to edit are the `named.conf.local` and `zones/*` files. These are currently referencing `schleppe` as a TLD. First rename or crate a new `zones/db.[YOUR_DOMAIN_HERE]` file, then update `named.conf.local` import to reflect name change.