Ajout d’une purge automatique des fichiers les plus vieux quand le seuil dépasse les 90%

roles/ftp/files/deleteoldfiles.sh

@@ -0,0 +1,156 @@
+#!/bin/bash
+#
+############################################################################### 
+# Author            :  Louwrentius
+# Contact           : louwrentius@gmail.com
+# Initial release   : August 2011
+# Licence           : Simplified BSD License
+############################################################################### 
+
+VERSION=1.01
+
+#
+# Mounted volume to be monitored.
+#
+MOUNT="$1"
+#
+# Maximum threshold of volume used as an integer that represents a percentage:
+# 95 = 95%.
+#
+MAX_USAGE="$2"
+#
+# Failsafe mechansim. Delete a maxium of MAX_CYCLES files, raise an error after
+# that. Prevents possible runaway script. Disable by choosing a high value.
+#
+MAX_CYCLES=10
+
+
+show_header () {
+
+    echo
+    echo DELETE OLD FILES $VERSION
+    echo
+
+}
+
+show_header
+
+reset () {
+    CYCLES=0
+    OLDEST_FILE=""
+    OLDEST_DATE=0
+    ARCH=`uname`
+}
+
+reset
+
+if [ -z "$MOUNT" ] || [ ! -e "$MOUNT" ] || [ ! -d "$MOUNT" ] || [ -z "$MAX_USAGE" ]
+then
+    echo "Usage: $0 <mountpoint> <threshold>"
+    echo "Where threshold is a percentage."
+    echo
+    echo "Example: $0 /storage 90"
+    echo "If disk usage of /storage exceeds 90% the oldest"
+    echo "file(s) will be deleted until usage is below 90%."
+    echo 
+    echo "Wrong command line arguments or another error:"
+    echo 
+    echo "- Directory not provided as argument or"
+    echo "- Directory does not exist or"
+    echo "- Argument is not a directory or"
+    echo "- no/wrong percentage supplied as argument."
+    echo
+    exit 1
+fi
+
+check_capacity () {
+
+    USAGE=`df -h | grep "$MOUNT" | awk '{ print $5 }' | sed s/%//g`
+    if [ ! "$?" == "0" ]    
+    then
+        echo "Error: mountpoint $MOUNT not found in df output."
+        exit 1
+    fi
+
+    if [ -z "$USAGE" ]
+    then
+        echo "Didn't get usage information of $MOUNT"
+        echo "Mountpoint does not exist or please remove trailing slash."
+        exit 1
+    fi
+
+    if [ "$USAGE" -gt "$MAX_USAGE" ]
+    then
+        echo "Usage of $USAGE% exceeded limit of $MAX_USAGE percent."
+        return 0
+    else
+        echo "Usage of $USAGE% is within limit of $MAX_USAGE percent."
+        return 1
+    fi
+}
+
+check_age () {
+
+    FILE="$1"
+    if [ "$ARCH" == "Linux" ]
+    then
+        FILE_DATE=`stat -c %Z "$FILE"`
+    elif [ "$ARCH" == "Darwin" ]
+    then
+        FILE_DATE=`stat -f %Sm -t %s "$FILE"`
+    else
+        echo "Error: unsupported architecture."
+        echo "Send a patch for the correct stat arguments for your architecture."
+    fi
+        
+    NOW=`date +%s`
+    AGE=$((NOW-FILE_DATE))
+    if [ "$AGE" -gt "$OLDEST_DATE" ]
+    then
+        export OLDEST_DATE="$AGE"
+        export OLDEST_FILE="$FILE"
+    fi
+}
+
+process_file () {
+    
+    FILE="$1"
+
+    #
+    # Replace the following commands with wathever you want to do with 
+    # this file. You can delete files but also move files or do something else.
+    #
+    echo "Deleting oldest file $FILE"
+    rm -f "$FILE"
+}
+
+while check_capacity
+do
+    if [ "$CYCLES" -gt "$MAX_CYCLES" ]
+    then
+        echo "Error: after $MAX_CYCLES deleted files still not enough free space."
+        exit 1
+    fi
+    
+    reset
+
+    FILES=`find "$MOUNT" -type f`
+    
+    IFS=$'\n'
+    for x in $FILES
+    do
+        check_age "$x"
+    done
+
+    if [ -e "$OLDEST_FILE" ]
+    then
+        #
+        # Do something with file.
+        #
+        process_file "$OLDEST_FILE"
+    else
+        echo "Error: somehow, item $OLDEST_FILE disappeared."
+    fi
+    ((CYCLES++))
+done
+echo

roles/ftp/tasks/main.yml

@@ -23,3 +23,17 @@
     group: root
   notify: restart vsftpd
 
+- name: Put control size script
+  copy:
+    src: files/deleteoldfiles.sh
+    dest: /usr/local/sbin/deleteoldfiles.sh
+    owner: root
+    group: root
+    mode: '0700'
+
+- name: Cron control size script
+  cron:
+    name: Delete oldest file
+    user: root
+    minute: '0'
+    job: "/usr/local/sbin/deleteoldfiles.sh /srv 90 &> /dev/null"