shell脚本----周期压缩备份日志文件

一、日志文件样式

---

二、目标

---

1、备份压缩.log结尾&&时间样式为“date +%Y%m%d”的日志文件(如：20170912、20160311等)

2、可指定压缩范围（N天前至当天）：如：今天、昨天（date -d "-1 day" +%Y%m%d）至今天、前天至今天

压缩命名格式为：日期.tar.gz(或：日期.tar.bz2)，压缩N天范围内文件后将会生成N个压缩包

3、可指定压缩模式（二选一）：tar czf  或  tar cjf

4、可指定删除范围：删除N天前的日志文件，如：今天为20170912，删除3天前日志，即删除20170908及其以前的日志文件

5、每周五（不一定周五，可在脚本中指定周几打包）将压缩文件打包（打包成功后删除压缩文件），并上传到日志服务器，上传成功后删除打包文件

6、默认备份当天日志文件，压缩模式为“czf”，删除三天前日志文件

三、脚本内容

---

#!/bin/bash
#author:xiami
#date:
#description: compress files of a specified mode and delete logs before a particular date
#version:v0.

strategy_logs_path="/root/apps/myapp/log"
date=$(date +%Y%m%d)

#------------初始化函数默认参数----------
init_argv(){  #example:init_argv -d  -m cjf -r  打包压缩近四天及当天日志，压缩模式cjf，删除五天前日志
    compress_date=$(date +%Y%m%d)
    backup_mode="czf"
    del_days_num=
    backup_path="/root/apps/logs_backup"
    line=$(ps -ef |grep "ssh-agent"|awk '{if($0!~/grep ssh-agent/)print $0}'|wc -l)
    while getopts d:m:r: opt
    do
        case $opt in
        d) compress_days="$OPTARG" ;;
        m) backup_mode="$OPTARG" ;;
        r) del_days_num="$OPTARG" ;;
       \?) echo "Usage: `basename $0` [d|m|r]"
           echo "-d 'Integer' (tar & compress Integer day logfile)"
           echo "-m 'czf|cjf' (mode)"
           echo "-r 'Interger' (remove files Integer days ago)"
           exit  ;;
        esac
    done
    if [ ! -d "$backup_path" ];then
        mkdir -p $backup_path
    fi
#    if [ line -lt  ];then
#        echo "Not running ssh-agent"
#        exit
#    fi
}
#------------打包并压缩日志文件操作函数--------------------
tar_compress_log(){    #参数1：压缩日期  参数2：压缩备份模式
    local compress_date="$1"
    local backup_mode="$2"
    cd "$strategy_logs_path"
#    ls . -name "*$date*.log"|xargs tar $backup_mode "$date.tar.gz"   #压缩当天日志
    if [ "$backup_mode" == 'czf' ];then
        ls | grep ".*[0-9]\{8\}.*\.log$"|grep ".*"$compress_date".*"|xargs tar $backup_mode "$backup_path/"$".tar.gz"
    elif [ "$backup_mode" == 'cjf' ];then
        ls | grep ".*[0-9]\{8\}.*\.log$"|grep ".*"$compress_date".*"|xargs tar $backup_mode "$backup_path/"$".tar.bz2"
    else
        echo "tar mode error";exit
    fi
}
#------------打包并压缩N天前到当前日期范围的日志文件----------
compress_range_date(){     #参数1：压缩备份天数 参数2：压缩备份模式
    local dates="$date"
    local compress_days="$1"
    local backup_mode="$2"
    if [[ ! -z "$compress_days" && "$compress_days" -ne  ]];then
        for i in `seq  "$compress_days"`;do
               dates=$(date -d "-$i day" +%Y%m%d)
            #   n=$(echo $dates|awk '{print NF}')
               tar_compress_log "$dates" "$backup_mode"
        done
    else
        tar_compress_log "$dates" "$backup_mode"
    fi
}
#------------每周五打包当周压缩文件并在打包成功后删除单个压缩文件------------
tar_file(){
    weekday=$(date +%u)
    if [ "$weekday" -eq  ];then
        cd "$backup_path"
        ls|xargs tar cf "$date-Fri-logs.tar" && rm *.tar.?z*
    fi
}
#-----------删除(del_log_days)天前日志文件(根据mtime)---------
delete_days_log1(){   #参数1：del_days_num
    local del_days_num="$1"
    cd "$strategy_logs_path"
    find . -type f -mtime +$del_days_num |grep ".*[0-9]\{8\}.*\.log"|xargs rm aa -rf  #删除操作，请谨慎
}
#----------删除(del_log_days)天前日志文件（根据log文件名）----
delete_days_log2(){    #参数1：del_days_num
    local del_days_num="$1"
    cd "$strategy_logs_path"
    local num=$(ls |grep ".*[0-9]\{8\}.*\.log$" |grep -o "[0-9]\{8\}"|awk '!day[$0]++'|wc -l)
    local files=$(ls |grep ".*[0-9]\{8\}.*\.log$" |grep -o "[0-9]\{8\}"|awk '!day[$0]++')
    if [ ! -z "$num" ];then
        local field=""
        for i in  `seq  "$num"`
        do
            field=$(echo $files|awk '{print $v}' v=$i)
            if [ "$field" -lt $(date -d "-$del_days_num day" +%Y%m%d) ];then
                    ls *$field* |grep   '.*[0-9]\{8\}.*\.log$'|xargs rm aa -rf
            fi
        done
    fi
}
#-----------上传到日志服务器-------------
upload_tgz(){
    scp $backup_path/$date.tar.gz 192.168.119.133:/opt/ && rm $backup_path/$date.tar.gz
   #scp $backup_path/$date*-logs.tar 192.168.119.133:/opt/ && rm $backup_path/$date*-logs.tar
}
#-----------main-------------------------
main(){
    init_argv $argv
    compress_range_date "$compress_days" "$backup_mode"
    delete_days_log2 $del_days_num
    tar_file
#    upload_tgz
}
#----------执行部分----------------------
argv=""
until [ "$#" -eq  ];do
            argv="$argv $1"
            shift
done
main $argv

log_tar_clean.sh

四、运行脚本

---

日志文件初始数量为图一所示

4.1 带参数运行后

4.2  不带参数运行（默认情况，备份当天日志文件，压缩模式为“czf”，删除三天前日志文件）

为了使测试环境一致，首先恢复被删除日志文件，删除压缩文件

不带参数运行脚本

五、计划任务

---

略

---

脚本完善：

1、删除每天的日志文件，机器中只保留近N天（默认14天）的压缩文件

2、考虑到安全性，文件上传改为：远端日志服务器从机器拉取每天对应的日志文件，而不是机器主动上传。

3、一次备份多个目录下日志，目录列表存放于scan_logdir.inc

完善后脚本：

#!/bin/bash
#author:xiami
#date:
#description: compress files of a specified mode and delete logs before a particular date, reference: http://www.cnblogs.com/xiami-xm/p/7511087.html
#version:v0.

date=$(date +%Y%m%d)
scan_log_dir="$(dirname $0)/scan_logdir.inc"

#------------初始化函数默认参数----------
init_argv(){  #example:init_argv -d  -m cjf -r  打包压缩近四天及当天日志，压缩模式cjf，删除五天前日志
    compress_date=$(date +%Y%m%d)
    backup_mode="cjf"
    del_days_num=
    backup_path="/root/apps/logs_backup"
    stay_days=
    line=$(ps -ef |grep "ssh-agent"|awk '{if($0!~/grep ssh-agent/)print $0}'|wc -l)
    while getopts d:m:r:s: opt
    do
        case $opt in
        d) compress_days="$OPTARG" ;;
        m) backup_mode="$OPTARG" ;;
        r) del_days_num="$OPTARG" ;;
        s) stay_days="$OPTARG" ;;
       \?) echo "Usage: `basename $0` [d|m|r]"
           echo "-d 'Integer' (tar & compress Integer day logfile)"
           echo "-m 'czf|cjf' (mode)"
           echo "-r 'Interger' (remove files Integer days ago)"
           exit  ;;
        esac
    done
    if [ ! -d "$backup_path" ];then
        mkdir -p $backup_path
    fi
}
#------------（实际操作函数）打包并压缩日志文件，压缩成功后立即将文件删除--------------------
tar_compress_log(){    #参数1：压缩日期  参数2：压缩备份模式
    local compress_date="$1"
    local backup_mode="$2"
    local logs_path="$3"
    cd "$logs_path"
#    cd "$strategy_logs_path"
#    ls . -name "*$date*.log"|xargs tar $backup_mode "$date.tar.gz"   #压缩当天日志
    if [ "$backup_mode" == 'czf' ];then
        ls | grep ".*[0-9]\{8\}.*\.\(log\|csv\)$"|grep ".*"$compress_date".*"|xargs tar $backup_mode $backup_path/dir$a.$compress_date.tar.gz >/dev/null >& && ls | grep ".*[0-9]\{8\}.*\.\(log\|csv\)$"|grep ".*"$compress_date".*"|xargs rm -rf
    elif [ "$backup_mode" == 'cjf' ];then
        ls | grep ".*[0-9]\{8\}.*\.\(log\|csv\)$"|grep ".*"$compress_date".*"|xargs tar $backup_mode $backup_path/dir$a.$compress_date.tar.bz2 >/dev/null >& && ls | grep ".*[0-9]\{8\}.*\.\(log\|csv\)$"|grep ".*"$compress_date".*"|xargs rm -rf
    else
        echo "tar mode error";exit
    fi
}
#------------检查scan_logdir.inc是否有数据-------------------
check_scan(){
    local line=$(cat "$scan_log_dir" | wc -l)
    if [ "$line" -eq  ];then
        exit ;
    fi
}
#------------需要备份的日志目录-------------------------------
backup_all_logs_dir(){
    check_scan
    local a=
    while read line;do
        local logs_path="$line"
        compress_range_date "$compress_days" "$backup_mode" "$logs_path"
#        delete_days_log1 "$del_days_num" "$logs_path"
        delete_days_log2 "$del_days_num" "$logs_path"
        let a++;echo "-----------------$a----------------------------------"
    done < "$scan_log_dir"
}
#------------打包并压缩N天前到当前日期范围的日志文件----------
compress_range_date(){     #参数1：压缩备份天数 参数2：压缩备份模式
    local dates="$date"
    local compress_days="$1"
    local backup_mode="$2"
    local logs_path="$3"
#    if [[ ! -z "$compress_days" && "$compress_days" -ne  ]];then
    if [ ! -z "$compress_days" ];then
        for i in `seq  "$compress_days"`;do
               dates=$(date -d "-$i day" +%Y%m%d)
            #   n=$(echo $dates|awk '{print NF}')
               tar_compress_log "$dates" "$backup_mode" "$logs_path"
        done
    else
        tar_compress_log "$dates" "$backup_mode" "$logs_path"
    fi
}
#------------每周五打包当周压缩文件并在打包成功后删除单个压缩文件------------
tar_file(){
    weekday=$(date +%u)
    if [ "$weekday" -eq  ];then
        cd "$backup_path"
        ls|xargs tar cf "$date-Fri-logs.tar" && rm *.tar.?z*
    fi
}
#-----------只保留14天内的压缩日志文件------------------------------------
stay_tgz_log(){
    local stay_days="$stay_days"
    local rm_date=$(date -d "-$stay_days day" +%Y%m%d)
    cd $backup_path
    ls |grep -o "[0-9]\{8\}"|awk '!aa[$0]++'|while read line;do
        if [ "$line" -le $rm_date ];then
             ls *$line* |xargs rm -rf
        fi
    done

}
#-----------删除(del_log_days)天前日志文件(根据mtime)---------
delete_days_log1(){   #参数1：del_days_num
    local del_days_num="$1"
    local logs_path="$2"
#    cd "$strategy_logs_path"
    cd "$logs_path"
    find . -type f -mtime +$del_days_num |grep ".*[0-9]\{8\}.*\.\(log\|csv\)$"|xargs rm -rf  #删除操作，请谨慎
}
#----------删除(del_log_days)天前日志文件（根据log文件名）----
delete_days_log2(){    #参数1：del_days_num
    local del_days_num="$1"
    local logs_path="$2"
#    cd "$strategy_logs_path"
    cd "$logs_path"
    local num=$(ls |grep ".*[0-9]\{8\}.*\.\(log\|csv\)$" |grep -o "[0-9]\{8\}"|awk '!day[$0]++'|wc -l)
    local files=$(ls |grep ".*[0-9]\{8\}.*\.\(log\|csv\)$" |grep -o "[0-9]\{8\}"|awk '!day[$0]++')
    if [ ! -z "$num" ];then
        local field=""
        for i in  `seq  "$num"`
        do
            field=$(echo $files|awk '{print $v}' v=$i)
            if [ "$field" -le $(date -d "-$del_days_num day" +%Y%m%d) ];then
                    ls *$field* |grep   '.*[0-9]\{8\}.*\.\(log\|csv\)$'|xargs rm -rf
            fi
        done
    fi
}
#-----------上传到日志服务器-------------
upload_tgz(){
    scp $backup_path/$date.tar.gz 192.168.119.133:/opt/ && rm $backup_path/$date.tar.gz
   #scp $backup_path/$date*-logs.tar 192.168.119.133:/opt/ && rm $backup_path/$date*-logs.tar
}
#-----------main-------------------------
main(){
    init_argv $argv
    backup_all_logs_dir
#    compress_range_date "$compress_days" "$backup_mode"
#    delete_days_log2 $del_days_num
    stay_tgz_log $stay_days
#    tar_file
#    upload_tgz
}
#----------执行部分----------------------
argv=""
until [ "$#" -eq  ];do
            argv="$argv $1"
            shift
done
main $argv

clean_log.sh

日志服务器拉取脚本：

#!/bin/bash
date=$(date +%Y%m%d)
remote_logs_backup=/root/apps/logs_backup
local_logs_backup=/root/apps/local_logs_backup
hostsfile="$(dirname $0)/hosts.inc"
while read line;do
    if [ ! -d "$local_logs_backup/$line" ];then
        mkdir -p "$local_logs_backup/$line"
    fi
    scp root@$line:$remote_logs_backup/*$date* $local_logs_backup/$line >/dev/null 2>&1
#&& ssh -nl root $line "rm $remote_logs_backup/* -rf" >/dev/null 2>&1   #ssh登陆或拷贝操作时若文件不存在会报错，可忽略
done < $hostsfile

pull_logs.sh

[root@xiamihost3 script]# cat hosts.inc
192.168.119.131   #hosts.inc中是目标机器的ip地址
192.168.119.133

　　

基本功能已实现，但脚本还有待改进，例如脚本中使用的grep可以换成egrep，可以少一层转义。

上传备份功能还未进行测试，可能会出现错误，当然，上传前肯定得先将本地公钥放入服务器的authorized_keys文件中，实现ssh无密登陆。

最后想感慨一句，还是python更强大

good good study，day day up