vr: cleanup files in /var/cache/cloud/processed every day (#5331)

* vr: cleanup files in /var/cache/cloud/processed every day

* #5331: add license header

systemvm/debian/etc/cron.daily/clean_cloud_processed_files

@@ -0,0 +1,38 @@
+#!/bin/bash
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# clear processed files in /var/cache/cloud/processed
+
+THRESHOLD=80
+DIRECTORY=/var/cache/cloud/processed
+DAYS=180
+MIN_DAYS=5
+
+if [ ! -d $DIRECTORY ];then
+    echo "$DIRECTORY not found"
+    exit 0
+fi
+
+percent=$(df --output=pcent $DIRECTORY | tr -dc '0-9')
+
+while [[ $percent -gt $THRESHOLD ]] && [[ $DAYS -gt $MIN_DAYS ]];do
+    echo "Removing files in $DIRECTORY older than $DAYS days"
+    find $DIRECTORY -type f -a -mtime +$DAYS -delete
+    DAYS=$((DAYS-1))
+    percent=$(df --output=pcent $DIRECTORY | tr -dc '0-9')
+done