脚本作用
1.批量导出Docker Images;
2.部分导出,通过指定Docker Images ID 到脚本“LIST”变量;
3.支持相同ID,不同REPOSITORY名称备份;
例如:
docker images kry1702/coredns 1.3.1 eb516548c180 5 months ago 40.3MB k8s.gcr.io/coredns 1.3.1 eb516548c180 5 months ago 40.3MB 注意:备份文件名称格式为:kry1702_coredns:1.3.1.tar 主要是解决相同ID,不同REPOSITORY名称,如果提取“/”最右边为备份文件名称格式导致备份文件冲突,以上为例备份文件名称格式为:coredns:1.3.1.tar
运行实例
#导出全部的镜像; sh ExportImg.sh #导出部分镜像 LIST=“ d235b 201c7a 201c7a” sh ExportImg.sh 注意:LIST赋值Docker Images ID ,多个镜像ID通过空格隔离;执行脚本是只会导出定义ID的镜像;
镜像还原(任选一种)
docker load --input xxx.tar docker load < xx.tar docker load -i xx.tar
脚本内容
LIST="" TXT=/root/tmp.txt BAKDIR=/usr/local/bak LOGDIR=/usr/local/bak/log LOGFILE=$LOGDIR/bak.`date +%Y%m%d`.log [ ! -d $BAKDIR ] && mkdir -p $BAKDIR [ ! -d $LOGDIR ] && mkdir -p $LOGDIR if [ -n "$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 else REC=`docker images |awk '{print $1,$2,$3}'|sed 1d >> $TXT` RESLIST=`cat $TXT|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 /usr/bin/rm -f $TXT fi if [ -s $LOGFILE ] then echo -e " 33[31mERROR:Images Backup Failed! 33[0m" echo -e " 33[31mPlease View The Log Lile : $LOGFILE 33[0m" else /usr/bin/rm -f $LOGFILE fi