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openEuler:24.03
rsyslog
_service:tar_scm:os_rotate_and_save_log.sh
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File _service:tar_scm:os_rotate_and_save_log.sh of Package rsyslog
#!/bin/bash ########################################################################### #File Name:os_rotate_and_save_log.sh #Description: Save the source file to destination directories by size #Parameter: It is a character string, has three values. # parameter one, the file which needs to be saved. # parameter two, the destination directory for saving the file. # parameter three, logdump dir limit size #Output:none ########################################################################### CUR_SCRIPT=$0 PID=$(pidof -x $CUR_SCRIPT) L_CUR_SCRIPT_RUNNING_COUNT=$(echo "$PID" | wc -w) #can not be runned twice at the same time if [ "${L_CUR_SCRIPT_RUNNING_COUNT}" -gt 1 ];then echo "[$CUR_SCRIPT] $CUR_SCRIPT is running, can not run it twice at one time" >/dev/kmsg exit 1 fi #parse parameter declare -a PARAM_ARRAY PARAM_ARRAY=($1) SRC_FILE=${PARAM_ARRAY[0]} DEST_DIR=${PARAM_ARRAY[1]} DIR_LIMIT_SIZE=${PARAM_ARRAY[2]} FILE_NAME=${SRC_FILE##*/} #get the maximum serial number SERIEL_NUM=`ls $DEST_DIR|grep "messages-.*-.*\.tar\.bz2"|cut -d '-' -f3 |sort -nr|head -n1|cut -d '.' -f1` if [ -z $SERIEL_NUM ];then SERIEL_NUM=0 fi ((SERIEL_NUM=$SERIEL_NUM+1)) TMPNAME=${FILE_NAME}-`date "+%Y%m%d%H%M%S"-${SERIEL_NUM}` TMPFILE=/tmp/$TMPNAME #create destination directory if [ ! -d "$DEST_DIR" ];then mkdir -p $DEST_DIR fi #save the log file to /tmp/ mv $SRC_FILE $TMPFILE #count the maximum number of bytes in the destination directory DIR_LIMIT_SIZE_NUM=${DIR_LIMIT_SIZE%[A-Z|a-z]} DIR_LIMIT_SIZE_UNIT=${DIR_LIMIT_SIZE##[0-9]*[0-9]} case $DIR_LIMIT_SIZE_UNIT in M|m) DIR_LIMIT_SIZE_NUM=$((DIR_LIMIT_SIZE_NUM*1024*1024)) ;; K|k) DIR_LIMIT_SIZE_NUM=$((DIR_LIMIT_SIZE_NUM*1024)) ;; esac TAR_PKG_NAME=$TMPFILE.tar.bz2 cd /tmp tar -cjf $TAR_PKG_NAME $TMPNAME cd - #count current dump file size FILE_SIZE=`du -sb $TAR_PKG_NAME|awk '{print $1}'` #count the maximum space that a file can occupy in the destination directory if it is to accommodate the current dump file. ((MAX_LEFT_SIZE=$DIR_LIMIT_SIZE_NUM-$FILE_SIZE)) #current total size of files pushd $DEST_DIR >/dev/null cursize=`du -sb|awk '{print $1}'` #delete extraneous files when there is not enough space if [ "$cursize" -gt "$MAX_LEFT_SIZE" ];then irrelevant_files=`find $DEST_DIR|grep -v "^$DEST_DIR/$FILE_NAME-.*-.*\.tar\.bz2$" |grep -v "^$DEST_DIR$"` if [ "$irrelevant_files" != "" ];then rm -rf $irrelevant_files echo "[$0]space of output directory $DEST_DIR will be larger than $DIR_LIMIT_SIZE bytes,delete the irrelevant files :$irrelevant_files" >/dev/kmsg cursize=`du -sb|awk '{print $1}'` fi fi #when the space is still insufficient, delete the oldest log package one by one until it can hold the latest log package while [ $cursize -gt $MAX_LEFT_SIZE ] do del_file=`ls $DEST_DIR|grep "$FILE_NAME-.*-.*\.tar\.bz2"|cut -d '-' -f3|sort -n|head -n1` if [[ $del_file == "" ]];then break fi del_file=`ls|grep "$FILE_NAME-.*-$del_file"` echo "[$0]space of output directory is larger than $DIR_LIMIT_SIZE bytes,delete the oldest tar file $del_file" >/dev/kmsg rm -rf $del_file cursize=`du -sb|awk '{print $1}'` done popd >/dev/null mv $TAR_PKG_NAME $DEST_DIR rm -rf $TMPFILE exit 0
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