Salt: add logrotate config for nginx logs

salt/salt/nginx/init.sls

@@ -23,3 +23,11 @@ nginx:
     - user: root
     - group: root
     - mode: 644
+
+# Add logrotate config to rotate daily and delete after 30 days
+/etc/logrotate.d/nginx:
+  file.managed:
+    - source: salt://nginx/logrotate
+    - user: root
+    - group: root
+    - mode: 644

salt/salt/nginx/logrotate

@@ -0,0 +1,15 @@
+/var/log/nginx/*.log {
+        daily
+        missingok
+        rotate 30
+        compress
+        delaycompress
+        notifempty
+        create 640 nginx adm
+        sharedscripts
+        postrotate
+                if [ -f /var/run/nginx.pid ]; then
+                        kill -USR1 `cat /var/run/nginx.pid`
+                fi
+        endscript
+}