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
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
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 "\033[31mERROR:Images Backup Failed!\033[0m"
echo -e "\033[31mPlease View The Log Lile : $LOGFILE\033[0m"
else
/usr/bin/rm -f $LOGFILE
fi