Loaʻa iā mākou 2 mau ʻeke mauʻu, 75 mescaline papa unix environment, kahi waihona docker a me ka hana o ka hoʻokō ʻana i nā kauoha huki docker a me nā docker push me ka ʻole o ka mea kūʻai aku docker.
UPD:
Nīnau: No ke aha kēia mau mea?
Pane: Hoʻouka i ka hoʻāʻo ʻana o ka huahana (ʻAʻole hoʻohana i ka bash, hāʻawi ʻia nā palapala no nā kumu hoʻonaʻauao). Ua hoʻoholo ʻia ʻaʻole e hoʻohana i ka mea kūʻai aku docker e hōʻemi i nā papa hou (i loko o nā palena kūpono) a, no laila, e hoʻohālike i kahi ukana kiʻekiʻe. ʻO ka hopena, ua hoʻoneʻe ʻia nā lohi āpau o ka mea kūʻai aku Docker. Ua loaʻa iā mākou kahi ukana maʻemaʻe ma luna o ka huahana.
Ua hoʻohana ka ʻatikala i nā mana GNU o nā mea hana.
ʻO ka mua, e noʻonoʻo kākou i ka hana a kēia mau kauoha.
No laila, he aha ka mea i hoʻohana ʻia ai ka docker pull? Wahi a :
"E huki i kahi kiʻi a i ʻole kahi waihona mai kahi papa inoa".
Ma laila mākou e ʻike ai i kahi loulou i .
Mai ʻaneʻi hiki iā mākou ke hoʻomaopopo i kahi kiʻi docker kahi hoʻonohonoho o kekahi mau papa i loaʻa ka ʻike e pili ana i nā loli hou loa o ke kiʻi, ʻo ia ka mea a mākou e pono ai. Ma hope aʻe e nānā mākou .
ʻŌlelo ia penei:
"ʻO kahi" kiʻi "he hui pū ʻana o kahi JSON hōʻike a me nā faila papa hoʻokahi. ʻO ke kaʻina hana o ka huki ʻana i kahi > kiʻi i waena o ke kiʻi ʻana i kēia mau ʻāpana ʻelua."
No laila ʻo ka hana mua e like me ka palapala "Huki i kahi Hōʻike Kiʻi".
ʻOiaʻiʻo, ʻaʻole mākou e pana, akā pono mākou i ka ʻikepili mai ia mea. Eia kekahi laʻana noi. GET /v2/{name}/manifests/{reference}
"ʻO ka inoa a me ka ʻāpana kuhikuhi e ʻike i ke kiʻi a koi ʻia. Hiki ke hoʻokomo ʻia ka hōʻailona a i ʻole ka digest."
Hoʻokomo ʻia kā mākou waihona docker ma ka ʻāina, e hoʻāʻo e hoʻokō i ka noi:
curl -s -X GET "http://localhost:8081/link/to/docker/registry/v2/centos-11-10/manifests/1.1.1" -H "header_if_needed"
I ka pane ʻana, loaʻa iā mākou ka json kahi a mākou e makemake wale nei i nā laina ola, a i ʻole kā lākou hashes. I ka loaʻa ʻana iā lākou, hiki iā mākou ke hele i kēlā me kēia a hoʻokō i kēia noi: "GET /v2/{name}/blobs/{digest}"
"E hoʻopaʻa ʻia ke komo ʻana i kahi papa e ka inoa o ka waihona akā ua ʻike ʻia ʻo ia ma ka papa inoa e ka digest."
ʻO ka digest i kēia hihia ka hash i loaʻa iā mākou.
Ke hoʻāʻo nei
curl -s -X GET "http://localhost:8081/link/to/docker/registry/v2/centos-11-10/blobs/sha256:f972d139738dfcd1519fd2461815651336ee25a8b54c358834c50af094bb262f" -H "header_if_needed" --output firstLayer
E ʻike kākou i ke ʻano o ka faila i loaʻa iā mākou ma ke ʻano he laina ola mua.
file firstLayer
ka poe. ʻO nā kaʻa he mau waihona tar, e wehe ana iā lākou ma ke ʻano kūpono e loaʻa iā mākou nā mea o ke kiʻi.
E kākau i kahi palapala bash liʻiliʻi i hiki ke hoʻohana ʻia kēia mau mea āpau
#!/bin/bash -eu
downloadDir=$1
# url as http://localhost:8081/link/to/docker/registry
url=$2
imageName=$3
tag=$4
# array of layers
layers=($(curl -s -X GET "$url/v2/$imageName/manifests/$tag" | grep -oP '(?<=blobSum" : ").+(?=")'))
# download each layer from array
for layer in "${layers[@]}"; do
echo "Downloading ${layer}"
curl -v -X GET "$url/v2/$imageName/blobs/$layer" --output "$downloadDir/$layer.tar"
done
# find all layers, untar them and remove source .tar files
cd "$downloadDir" && find . -name "sha256:*" -exec tar xvf {} ;
rm sha256:*.tar
exit 0I kēia manawa hiki iā mākou ke holo me nā ʻāpana i makemake ʻia a loaʻa nā ʻike o ke kiʻi i makemake ʻia
./script.sh dirName “http://localhost:8081/link/to/docker/registry” myAwesomeImage 1.0Mahele 2 - pahu pahu
E paʻakikī iki kēia.
E hoʻomaka hou kākou me . No laila pono mākou e hoʻoiho i kēlā me kēia alakaʻi, e hōʻiliʻili i ka hōʻike kūpono a hoʻoiho pū kekahi. He mea maʻalahi.
Ma hope o ke aʻo ʻana i ka palapala, hiki iā mākou ke hoʻokaʻawale i ke kaʻina hoʻoiho i kekahi mau ʻanuʻu:
- Kaʻina hana hoʻomaka - "POST /v2/{repoName}/blobs/uploads/"
- Ke hoʻouka nei i kahi laina ola (e hoʻohana mākou i kahi hoʻouka monolithic, ʻo ia hoʻi. hoʻouna mākou i kēlā me kēia laina ola i kona holoʻokoʻa) - "PUT /v2/{repoName}/blobs/uploads/{uuid}?digest={digest}
Maʻiʻo-Loihi: {ka nui o ka papa}
ʻAno maʻiʻo: noi/octet-stream
Layer Binary Data". - Ke hoʻouka nei i ka hōʻike - "PUT /v2/{repoName}/manifests/{reference}".
Akā nalo ka palapala i kahi ʻanuʻu, me ka ʻole o ia mea e hana ʻole. No ka hoʻouka monolithic, a me ka hapa (chunked), ma mua o ka hoʻouka ʻana i ke kaʻaahi, pono ʻoe e hana i kahi noi PATCH:
"PATCH /v2/{repoName}/blobs/uploads/{uuid}
Maʻiʻo-Loihi: {ka nui o ka ʻāpana}
ʻAno maʻiʻo: noi/octet-stream
{Layer Chunk Binary Data}".
A i ʻole, ʻaʻole hiki iā ʻoe ke neʻe ma mua o ka helu mua, no ka mea... Ma kahi o ka helu pane i manaʻo ʻia 202, e loaʻa iā ʻoe ka 4xx.
I kēia manawa ua like ka algorithm:
- Hoʻomaka
- Patch rail
- Ke hoʻouka nei i ka lima lima
- Ke hoʻouka nei i ka hōʻike
E hana hou ʻia nā helu 2 a me 3 e like me ka nui o nā laina e hoʻouka ʻia.
ʻO ka mea mua, pono mākou i kekahi kiʻi. E hoʻohana wau i archlinux:latest
docker pull archlinux
I kēia manawa, e mālama kākou ma ka ʻāina no ka nānā hou ʻana
docker save c24fe13d37b9 -o savedArch
Wehe i ka waihona i loaʻa i loko o ka papa kuhikuhi o kēia manawa
tar xvf savedArch
E like me kāu e ʻike ai, aia kēlā me kēia lifeline i kahi waihona ʻokoʻa. E nānā kākou i ke ʻano o ka hōʻike i loaʻa iā mākou
cat manifest.json | json_pp
ʻAʻole nui. E ʻike kākou i ka manifest e pono ai e hoʻouka, e like me .
ʻIke loa, ʻaʻole kūpono ka manifesto i kēia manawa, no laila e hana mākou iā mākou iho me ka blackjack a me nā courtesans, nā laina ola a me nā configs.
E loaʻa mau iā mākou ma kahi o hoʻokahi faila config a me kahi ʻano o nā laina ola. ʻO ka mana o ka papahana 2 (i kēia manawa i ka wā e kākau ai), e waiho ʻia ka mediaType me ka loli ʻole:
echo ‘{
"schemaVersion": 2,
"mediaType": "application/vnd.docker.distribution.manifest.v2+json",
"config": {
"mediaType": "application/vnd.docker.container.image.v1+json",
"size": config_size,
"digest": "config_hash"
},
"layers": [
’ > manifest.jsonMa hope o ka hana ʻana i ka hōʻike kumu, pono ʻoe e hoʻopiha iā ia me ka ʻikepili kūpono. No ka hana ʻana i kēia, hoʻohana mākou i ka template json o ka mea rail:
{
"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
"size": ${layersSizes[$i]},
"digest": "sha256:${layersNames[$i]}"
},E hoʻohui mākou i ka hōʻike no kēlā me kēia kaʻa.
A laila, pono mākou e ʻike i ka nui o ka faila config a hoʻololi i nā stubs i ka hōʻike me ka ʻikepili maoli
sed -i "s/config_size/$configSize/g; s/config_hash/$configName/g" $manifestFileI kēia manawa hiki iā ʻoe ke hoʻomaka i ke kaʻina hoʻoiho a mālama iā ʻoe iho i uuid, pono e hele pū me nā noi a pau.
ʻO ka palapala holoʻokoʻa e like me kēia:
#!/bin/bash -eux
imageDir=$1
# url as http://localhost:8081/link/to/docker/registry
url=$2
repoName=$3
tag=$4
manifestFile=$(readlink -f ${imageDir}/manifestCopy)
configFile=$(readlink -f $(find $imageDir -name "*.json" ! -name "manifest.json"))
# calc layers sha 256 sum, rename them accordingly, and add info about each to manifest file
function prepareLayersForUpload() {
info_file=$imageDir/info
# lets calculate layers sha256 and use it as layers names further
layersNames=($(find $imageDir -name "layer.tar" -exec shasum -a 256 {} ; | cut -d" " -f1))
# rename layers according to shasums. !!!Set required amount of fields for cut command!!!
# this part definitely can be done easier but i didn't found another way, sry
find $imageDir -name "layer.tar" -exec bash -c 'mv {} "$(echo {} | cut -d"/" -f1,2)/$(shasum -a 256 {} | cut -d" " -f1)"' ;
layersSizes=($(find $imageDir -name "*.tar" -exec ls -l {} ; | awk '{print $5}'))
for i in "${!layersNames[@]}"; do
echo "{
"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
"size": ${layersSizes[$i]},
"digest": "sha256:${layersNames[$i]}"
}," >> $manifestFile
done
# remove last ','
truncate -s-2 $manifestFile
# add closing brakets to keep json consistent
printf "nt]n}" >> $manifestFile
}
# calc config sha 256 sum and add info about it to manifest
function setConfigProps() {
configSize=$(ls -l $configFile | awk '{print $5}')
configName=$(basename $configFile | cut -d"." -f1)
sed -i "s/config_size/$configSize/g; s/config_hash/$configName/g" $manifestFile
}
#prepare manifest file
prepareLayersForUpload
setConfigProps
cat $manifestFile
# initiate upload and get uuid
uuid=$(curl -s -X POST -I "$url/v2/$repoName/blobs/uploads/" | grep -oP "(?<=Docker-Upload-Uuid: ).+")
# patch layers
# in data-binary we're getting absolute path to layer file
for l in "${!layersNames[@]}"; do
pathToLayer=$(find $imageDir -name ${layersNames[$l]} -exec readlink -f {} ;)
curl -v -X PATCH "$url/v2/$repoName/blobs/uploads/$uuid"
-H "Content-Length: ${layersSizes[$i]}"
-H "Content-Type: application/octet-stream"
--data-binary "@$pathToLayer"
# put layer
curl -v -X PUT "$url/v2/$repoName/blobs/uploads/$uuid?digest=sha256:${layersNames[$i]}"
-H 'Content-Type: application/octet-stream'
-H "Content-Length: ${layersSizes[$i]}"
--data-binary "@$pathToLayer"
done
# patch and put config after all layers
curl -v -X PATCH "$url/v2/$repoName/blobs/uploads/$uuid"
-H "Content-Length: $configSize"
-H "Content-Type: application/octet-stream"
--data-binary "@$configFile"
curl -v -X PUT "$url/v2/$repoName/blobs/uploads/$uuid?digest=sha256:$configName"
-H 'Content-Type: application/octet-stream'
-H "Content-Length: $configSize"
--data-binary "@$configFile"
# put manifest
curl -v -X PUT "$url/v2/$repoName/manifests/$tag"
-H 'Content-Type: application/vnd.docker.distribution.manifest.v2+json'
--data-binary "@$manifestFile"
exit 0
hiki iā mākou ke hoʻohana i kahi palapala i hoʻomākaukau ʻia:
./uploadImage.sh "~/path/to/saved/image" "http://localhost:8081/link/to/docker/registry" myRepoName 1.0UPD:
He aha ka mea i loaʻa iā mākou?
ʻO ka mea mua, ʻo ka ʻikepili maoli no ka nānā ʻana, ʻoiai ke holo nei nā hoʻāʻo i ka blazemeter a ʻaʻole ʻike nui ka ʻikepili i nā noi o ka mea kūʻai aku docker, ʻaʻole like me nā noi HTTP maʻemaʻe.
ʻO ka lua, ua ʻae ka hoʻololi iā mākou e hoʻonui i ka helu o nā mea hoʻohana virtual no ka hoʻouka docker ma kahi o 150% a loaʻa ka manawa pane avg 20-25% wikiwiki. No ka hoʻoiho docker, hiki iā mākou ke hoʻonui i ka helu o nā mea hoʻohana e 500%, ʻoiai ua emi ka manawa pane avg ma kahi o 60%.
Mahalo oe no kou noonoo.
Source: www.habr.com