Add logrotate example

Add an example logrotate snippet, along with the relevant documentation.
Signed-off-by: Apollon Oikonomopoulos <apoikos@gmail.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

.gitignore

@@ -66,6 +66,7 @@
 /doc/examples/bash_completion-debug
 /doc/examples/ganeti.cron
 /doc/examples/ganeti.initd
+/doc/examples/ganeti.logrotate
 /doc/examples/ganeti-kvm-poweroff.initd
 /doc/examples/ganeti-master-role.ocf
 /doc/examples/ganeti-node-role.ocf

Makefile.am

@@ -226,6 +226,7 @@ BUILT_EXAMPLES = \
 	doc/examples/ganeti-kvm-poweroff.initd \
 	doc/examples/ganeti.cron \
 	doc/examples/ganeti.initd \
+	doc/examples/ganeti.logrotate \
 	doc/examples/ganeti-master-role.ocf \
 	doc/examples/ganeti-node-role.ocf \
 	doc/examples/gnt-config-backup \

devel/upload

@@ -100,6 +100,10 @@ PKGLIBDIR="$(echo @PKGLIBDIR@ | $SED)"
 install -D --mode=0755 doc/examples/ganeti.initd \
   "$TXD/$SYSCONFDIR/init.d/ganeti"
 
+[ -f doc/examples/ganeti.logrotate ] && \
+install -D --mode=0755 doc/examples/ganeti.logrotate \
+  "$TXD/$SYSCONFDIR/logrotate.d/ganeti"
+
 [ -f doc/examples/ganeti-master-role.ocf ] && \
 install -D --mode=0755 doc/examples/ganeti-master-role.ocf \
   "$TXD/$LIBDIR/ocf/resource.d/ganeti/ganeti-master-role"

doc/examples/ganeti.logrotate.in

+/var/log/ganeti/*.log {
+        weekly
+        missingok
+        rotate 52
+        notifempty
+        compress
+        delaycompress
+        create 640 root root
+        sharedscripts
+        postrotate
+		@PKGLIBDIR@/daemon-util rotate-all-logs
+        endscript
+}

doc/install.rst

@@ -566,7 +566,10 @@ distribution's startup scripts, for example in Debian::
 In order to automatically restart failed instances, you need to setup a
 cron job run the *ganeti-watcher* command. A sample cron file is
 provided in the source at ``doc/examples/ganeti.cron`` and you can copy
-that (eventually altering the path) to ``/etc/cron.d/ganeti``.
+that (eventually altering the path) to ``/etc/cron.d/ganeti``. Finally,
+a sample logrotate snippet is provided in the source at
+``doc/examples/ganeti.logrotate`` and you can copy it to
+``/etc/logrotate.d/ganeti`` to have Ganeti's logs rotated automatically.
 
 What gets installed
 ~~~~~~~~~~~~~~~~~~~