#!/bin/bash

#本地获取digests值

dg=$(docker images --digests | grep bin_spinsrv | grep k8sv33 | awk '{print $3}')
echo $dg > /root/t3.json

#远程获取digests值

dj=$(curl --header "Accept: application/vnd.docker.distribution.manifest.v2+json" -I -X GET http://192.168.1.7:5000/v2/biinsrv/manifests/k8sv33 | grep Digest | awk '{print$2}')
echo $dj > /root/t4.json

#diff和cmp都可以对比 ，但是diff -w 忽略全部的空格字符。 -b 不检查空格字符的不同

#这里没有加-w或者-b，cat 文件内容一样digests的值，ls -l的时候看字节不同

df=$(diff -w /root/t3.json /root/t4.json)
echo $df

#查看是否输出空值

if [ "$df" = "" ]; then
  echo "IS NULL"
else
  echo "NOT NULL"
fi
#srvname=$(kubectl get pods | grep spinsrv | awk '{print$1}')
#echo $srvname

#kubectl delete pods $srvname

注意格式工整问题 ，不然结果就可能不一样

dj=$(curl --header "Accept: application/vnd.docker.distribution.manifest.v2+json" -I -X GET http://192.168.1.7:5000/v2/biinsrv/manifests/k8sv33 | grep Digest | awk '{print$2}')

dg=$(docker images --digests | grep bin_spinsrv | grep k8sv33 | awk '{print $3}')

#!/bin/bash

serviceList="123srv 456srv 789srv 234srv 345srv 567srv 678srv"

for item in $serviceList
do
        # echo "开始检测服务$item"
        valuea=`kubectl describe pods $(kubectl get pods -o wide|grep $item| awk '{print $1}')|grep '@sha256:'|awk '{print $3}'|awk -F"@" '{print $2}'|sed 's/[[:space:]]//g'`
        echo "###本地k8s###"
        echo $item
        echo $valuea
        valueb=$(curl --header "Accept: application/vnd.docker.distribution.manifest.v2+json" -I -X GET http://192.168.1.7:5000/v2/bin_${item}/manifests/latest |sed -n '/Docker-Content-Digest/'p|awk  '{print $2}'|sed 's/[[:space:]]//g')
        echo "***远程镜像仓库***"
        echo $valueb
        if [ $valuea == $valueb ]; then
          echo "无需更新"
        else
          echo "要更新"
          #srvname=$(kubectl get pods | grep $item | awk '{print$1}')
          #echo $srvname
          #kubectl delete pods $srvname
        fi
        echo "----------------------"
done

 最终版 ，这里$#,可以改成 $@ 就可以多个服务了  ，而不是一个或者全部

#!/bin/bash
serviceList0="[ 123srv 456srv 789srv 234srv 345srvsrv 567srv 678srvsrv ]"
serviceList="123srv 456srv 789srv 234srv 345srvsrv 567srv 678srvsrv"
updateSrvList=""
if [[ $# == 1 ]]; then
        echo "指定服务更新模式"
        serviceList=$1
elif [[ $# > 1 ]]; then
        echo "传参错误!选择$serviceList0中一个"
        exit
fi

for item in $serviceList
do
        echo "开始检测服务$item"
        tmp=`kubectl describe pods $(kubectl get pods -o wide|grep $item| awk '{print $1}')`

        valuea=`kubectl describe pods $(kubectl get pods -o wide|grep $item| awk '{print $1}')|grep '@sha256:'|awk '{print $3}'|awk -F"@" '{print $2}'|sed 's/[[:space:]]//g'
        `

        if [[ ${#valuea} != 71 ]];then
                echo "未找到服务${item}，选择$serviceList0中一个"
                continue
        fi

        valueb=$(curl --header "Accept: application/vnd.docker.distribution.manifest.v2+json" -s -I -X GET http://192.168.1.70:5000/v2/bin_${item}/manifests/latest |sed -n '/Docker-Content-Digest/'p|awk  '{print $2}'|sed 's/[[:space:]]//g')
        if [[ ${#valueb} != 71 ]];then
                echo "未找到服务${item}，选择$serviceList0中一个"
                continue
        fi

        if [[ $valuea == $valueb ]]; then
          echo "无需更新"
        else
          updateSrvList=${updateSrvList}$item"，"
          echo "要更新!!!!!"

          srvname=$(kubectl get pods | grep $item | awk '{print$1}')
          kubectl delete pods $srvname
        fi
        echo "----------------------"
done

if [[ ${#updateSrvList} != 0 ]];then
        echo "更新了："$updateSrvList
else
        echo "此次操作没有任何更新"
fi