docker镜像备份脚本

#!/bin/bash
#备份kolla的镜像
LIST=" "  #可在外面执行脚本的时候带上参数
TXT=/root/tmp.txt
BAKDIR=/usr/local/bak
LOGDIR=/usr/local/bak/log
LOGFILE=$LOGDIR/`date +%Y%m%d`.log

[ ! -d $BAKDIR ] && mkdir -p $BAKDIR
[ ! -d $LOGDIR ] && mkdir -p $LOGDIR

#此部分为用户自定义备份镜像（即部分备份）
if [ ! -n "$LIST" ]
then
        for list in $LIST
        do
                RESLIST=`docker images |grep $list | awk ‘{print $1}‘`
                for reslist in $RESLIST
                do
                RESTAG=`docker images |grep "$reslist" |awk ‘{a=$1":"$2;print a }‘`
                BAKNAME=`docker images |grep "$reslist" |awk ‘{a=$1":"$2;print a }‘|sed ‘s/\//_/g‘`
                /usr/bin/docker save $RESTAG -o $BAKDIR/$BAKNAME.tar  >> $LOGFILE 2>&1
                done
        done

#全备部分
else
        RTI=`docker images |awk ‘{print $1,$2,$3}‘|sed 1d > $TXT`
#RTI表示仓库名、tag名、imagesID，sed 1d 表示删除第一行

        RESLIST=`cat $TXT|awk ‘{print $1}‘`

#RESLIST表示镜像的名字（包含仓库路径）
        for reslist in $RESLIST
        do
                RESTAG=`docker images |grep "$reslist" |awk ‘{a=$1":"$2;print a }‘`
                BAKNAME=`docker images |grep "$reslist" |awk ‘{a=$1":"$2;print a }‘|sed ‘s/\//_/g‘`
                docker save $RESTAG -o $BAKDIR/$BAKNAME.tar  >> $LOGFILE 2>&1
        done
        /usr/bin/rm -f $TXT
fi