自动化shell脚本下载_使用此Shell脚本自动化现场演示

自动化shell脚本下载

我在10月的LISA19上发表了有关多体系结构容器映像的演讲 ，其中包括一个冗长的实时演示。 我决定不使用30个以上的命令并要冒输入错误的风险，而是决定使用Shell脚本使演示自动化。

该脚本模仿了显示为输入/输出的内容，并在后台运行了真实的命令，在各个地方都暂停了，因此我可以叙述发生了什么。 我对脚本的结果和舞台效果感到非常满意。 我演讲的脚本及配套材料都可以在GitHub的下一个Apache 2.0许可。

剧本

 #!/bin/bash 

set -e 

IMG =thedoh / lisa19
REGISTRY =docker.io
VERSION =19.10.1

# Plan B with GCR: 
#IMG=dulcet-iterator-213018 
#REGISTRY=us.gcr.io 
#VERSION=19.10.1 



pause ( ) { 
local step = " ${1} " 
ps1
echo -n "# Next step: ${step} " 
read 
} 


ps1 ( ) { 
echo -ne "\033[01;32m ${USER} @ $(hostname -s) \033[01;34m $(basename $(pwd) ) \$ \033[00m" 
} 


echocmd ( ) { 
echo " $(ps1) $@" 
} 


docmd ( ) { 
echocmd $ @ 
$ @ 
} 


step0 ( ) { 
local registry = " ${1} " img = " ${2} " version = " ${3} " 
# Mindful of tokens in ~/.docker/config.json 
docmd grep experimental ~ / .docker / config.json

docmd cd ~ / go / src / github.com / lisa / lisa19-containers

pause "This is what we'll be building" 
docmd export REGISTRY = ${registry} 
docmd export IMG = ${img} 
docmd export VERSION = ${version} 
docmd make REGISTRY = ${registry} IMG = ${img} VERSION = ${version} clean
} 


step1 ( ) { 
local registry = " ${1} " img = " ${2} " version = " ${3} " 

docmd docker build --no-cache --platform =linux / amd64 --build-arg = GOARCH =amd64 -t ${REGISTRY} / ${IMG} :amd64- ${VERSION} .
pause "ARM64 image next" 
docmd docker build --no-cache --platform =linux / arm64 --build-arg = GOARCH =arm64 -t ${REGISTRY} / ${IMG} :arm64- ${VERSION} . 
} 


step2 ( ) { 
local registry = " ${1} " img = " ${2} " version = " ${3} " origpwd =$ ( pwd ) savedir =$ ( mktemp -d ) jsontemp =$ ( mktemp -t XXXXX ) 
chmod 700 $jsontemp $savedir 
# Set our way back home and get ready to fix our arm64 image to amd64. 
echocmd 'origpwd=$(pwd)' 
echocmd 'savedir=$(mktemp -d)' 
echocmd "mkdir -p \$ savedir/change" 
mkdir -p $savedir / change &>/ dev / null
echocmd "docker save ${REGISTRY} / ${IMG} :arm64- ${VERSION} 2>/dev/null 1> \$ savedir/image.tar" 
docker save ${REGISTRY} / ${IMG} :arm64- ${VERSION} 2 >/ dev / null 1 > $savedir / image.tar
pause "untar the image to access its metadata" 

echocmd "cd \$ savedir/change" 
cd $savedir / change
echocmd tar xf \ $savedir / image.tar
tar xf $savedir / image.tar
docmd ls -l 

pause "find the JSON config file" 
echocmd 'jsonfile=$(jq -r ".[0].Config" manifest.json)' 
jsonfile =$ ( jq -r ".[0].Config" manifest.json ) 

pause "notice the original metadata says amd64" 
echocmd jq '{architecture: .architecture, ID: .config.Image}' \ $jsonfile 
jq '{architecture: .architecture, ID: .config.Image}' $jsonfile 

pause "Change from amd64 to arm64 using a temp file" 
echocmd "jq '.architecture = \" arm64 \" ' \$ jsonfile > \$ jsontemp" 
jq '.architecture = "arm64"' $jsonfile > $jsontemp 
echocmd / bin / mv -f -- \ $jsontemp \ $jsonfile 
/ bin / mv -f -- $jsontemp $jsonfile 

pause "Check to make sure the config JSON file says arm64 now" 
echocmd jq '{architecture: .architecture, ID: .config.Image}' \ $jsonfile 
jq '{architecture: .architecture, ID: .config.Image}' $jsonfile 

pause "delete the image with the incorrect metadata" 
docmd docker rmi ${REGISTRY} / ${IMG} :arm64- ${VERSION} 

pause "Re-compress the ARM64 image and load it back into Docker, then clean up the temp space" 
echocmd 'tar cf - * | docker load' 
tar cf - * | docker load

docmd cd $origpwd 
echocmd "/bin/rm -rf -- \$ savedir" 
/ bin / rm -rf -- $savedir &>/ dev / null
} 


step3 ( ) { 
local registry = " ${1} " img = " ${2} " version = " ${3} " 
docmd docker push ${registry} / ${img} :amd64- ${version} 
pause "push ARM64 image to ${registry} " 
docmd docker push ${registry} / ${img} :arm64- ${version} 
} 


step4 ( ) { 
local registry = " ${1} " img = " ${2} " version = " ${3} " 
docmd docker manifest create ${registry} / ${img} : ${version} ${registry} / ${img} :arm64- ${version} ${registry} / ${img} :amd64- ${version} 

pause "add a reference to the amd64 image to the manifest list" 
docmd docker manifest annotate ${registry} / ${img} : ${version} ${registry} / ${img} :amd64- ${version} --os linux --arch amd64
pause "now add arm64" 
docmd docker manifest annotate ${registry} / ${img} : ${version} ${registry} / ${img} :arm64- ${version} --os linux --arch arm64
} 


step5 ( ) { 
local registry = " ${1} " img = " ${2} " version = " ${3} " 
docmd docker manifest push ${registry} / ${img} : ${version} 
} 



step6 ( ) { 
local registry = " ${1} " img = " ${2} " version = " ${3} " 
docmd make REGISTRY = ${registry} IMG = ${img} VERSION = ${version} clean

pause "ask docker.io if ${img} : ${version} has a linux/amd64 manifest, and run it" 
docmd docker pull --platform linux / amd64 ${registry} / ${img} : ${version} 
docmd docker run --rm -i ${registry} / ${img} : ${version} 

pause "clean slate again" 
docmd make REGISTRY = ${registry} IMG = ${img} VERSION = ${version} clean

pause "now repeat for linux/arm64 and see what it gives us" 
docmd docker pull --platform linux / arm64 ${registry} / ${img} : ${version} 
set +e
docmd docker run --rm -i ${registry} / ${img} : ${version} 
set -e 
if [ [ $ ( uname -s ) == "Darwin" ] ] ; then 
pause "note about Docker on Mac and binfmt_misc: binfmt_misc lets a mac run arm64 binaries in the Docker VM" 
fi 
} 


pause "initial setup" 

step0 ${REGISTRY} ${IMG} ${VERSION} 

pause "1 build constituent images" 

step1 ${REGISTRY} ${IMG} ${VERSION} 


pause "2 fix ARM64 metadata" 

step2 ${REGISTRY} ${IMG} ${VERSION} 


pause "3 push constituent images up to docker.io" 

step3 ${REGISTRY} ${IMG} ${VERSION} 


pause "4 build the manifest list for the image" 

step4 ${REGISTRY} ${IMG} ${VERSION} 


pause "5 Push the manifest list to docker.io" 

step5 ${REGISTRY} ${IMG} ${VERSION} 


pause "6 clean slate, and validate the list-based image" 

step6 ${REGISTRY} ${IMG} ${VERSION} 


docmd echo 'Manual steps all done!' 
make REGISTRY = ${REGISTRY} IMG = ${IMG} VERSION = ${VERSION} clean &>/ dev / null

翻译自: https://opensource.com/article/20/2/live-demo-script

自动化shell脚本下载

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