系统性认识容器镜像
一、简介
1.docker image的本质
2.docker的镜像rootfs，和layer的设计
3. 容器的镜像挂载
[root@p22295v zhangzhifei]# ls -lrt /var/lib/docker/total 156drwx--x--x 3 root root 4096 Dec 6 2018 containerddrwx------ 4 root root 4096 Dec 6 2018 pluginsdrwx------ 3 root root 4096 Dec 6 2018 imagedrwx------ 2 root root 4096 Dec 6 2018 trustdrwxr-x--- 3 root root 4096 Dec 6 2018 networkdrwx------ 2 root root 4096 Dec 6 2018 swarmdrwx------ 2 root root 4096 Dec 6 2018 builderdrwx------ 89 root root 12288 Jul 17 11:07 volumesdrwx------ 2 root root 4096 Jul 17 14:30 runtimesdrwx------ 2 root root 4096 Jul 23 12:51 tmpdrwx------ 758 root root 94208 Jul 29 19:12 overlay2drwx------ 80 root root 12288 Jul 29 19:12 containers
我们运行个容器演示下：
[root@p22295v zhangzhifei]# docker run -it -d kraken-agent:dev83555ad8c034682ad885fc9e320bfb1f8b75498b61a1a8684d738c411caa930b
启动一个容器，在/var/lib/docker/overlay2目录下生成一个容器视图层，目录包括diff，link，lower，merged，work。
diff记录每一层自己内容的数据，link记录该层链接目录（实际是l目录下到层的链接），比如在容器中创建目录或在diff新增该目录。
根据存储数据及功能可以把这些层分为3部分：
1. 只读层
2. init层（夹在只读层和读写层之间，专门用来存放/etc/hosts、/etc/resolv.conf等信息。需要这样一层的原因是，这些文件本来属于只读的系统镜像层的一部分，但是用户往往需要在启动容器时写入一些指定的值比如hostname，所以就需要在可读写层对它们进行修改。可是，这些修改往往只对当前的容器有效，我们并不希望执行docker commit时，把这些信息连同可读写层一起提交掉。所以，Docker做法是，在修改了这些文件之后，以一个单独的层挂载了出来。而用户执行docker commit只会提交可读写层，所以是不包含这些内容的。）
3.读写层（在没有写入文件之前，这个目录是空的。而一旦在容器里做了写操作，你修改产生的内容就会以增量的方式出现在这个层中）
查看容器挂载目录
[root@p22295v zhangzhifei]# cat /var/lib/docker/image/overlay2/layerdb/mounts/83555ad8c034682ad885fc9e320bfb1f8b75498b61a1a8684d738c411caa930b/mount-id3695f349587aaa2cdc82fcde1a380c7b567ef870a47e4c28b8b279e4edc9eb40[root@p22295v zhangzhifei]#读写层[root@p22295v zhangzhifei]# ls /var/lib/docker/overlay2/3695f349587aaa2cdc82fcde1a380c7b567ef870a47e4c28b8b279e4edc9eb40/diff/[root@p22295v zhangzhifei]#只读层[root@p22295v zhangzhifei]# ls /var/lib/docker/overlay2/65e5cdd72f2995da4c73f2d9b90e8d974b9d2f18829a2479296aaec24e67d185/diff/bin boot dev etc home lib lib64 media mnt opt proc root run sbin srv sys tmp usr var只读层（Dockerfile时ADD的二进制程序）[root@p22295v zhangzhifei]# ls -lrt /var/lib/docker/overlay2/852fa5138c3da5070b59e6402348a5a281378b28ee08fede9c635e4101f91092/diff/usr/bin/total 28836-rwxr-xr-x 1 root root 29526888 Jul 10 16:23 kraken-origininit层[root@p22295v zhangzhifei]# ls /var/lib/docker/overlay2/3695f349587aaa2cdc82fcde1a380c7b567ef870a47e4c28b8b279e4edc9eb40-init/diff/dev etc
最终，这写层都被联合挂载到/var/lib/docker/overlay2/3695f349587aaa2cdc82fcde1a380c7b567ef870a47e4c28b8b279e4edc9eb40/merged目录下，表现为一个完整的操作系统和运行时环境供容器使用。
[root@p22295v zhangzhifei]# mount | grep 3695f349587aaa2cdc82fcde1a380c7b567ef870a47e4c28b8b279e4edc9eb40overlay on /var/lib/docker/overlay2/3695f349587aaa2cdc82fcde1a380c7b567ef870a47e4c28b8b279e4edc9eb40/merged type overlay (rw,relatime,lowerdir=/var/lib/docker/overlay2/l/Z7QMVXSKSNAKCUEJ6ZMU5YTFWG:/var/lib/docker/overlay2/l/2OYCXTK7M4QN3DT7IYJK6J7VYT:/var/lib/docker/overlay2/l/UZTDJDVUOBHU2VERRLXF5KMIQO:/var/lib/docker/overlay2/l/NAXXPRFMO4ATUIG6SFPU4LBUUV:/var/lib/docker/overlay2/l/AM4PHUFWOD4UHYIVO5Q6GVZ5L7:/var/lib/docker/overlay2/l/7XLJNT7Q3UQIKHDNV4QG4EX2C3:/var/lib/docker/overlay2/l/3RAVSDXXRS3BASAKZFPT2ESY2K:/var/lib/docker/overlay2/l/FFNAQF5ADFSTEBNZZ4O2R3CP4N:/var/lib/docker/overlay2/l/X6BOWOZKYRN3DZFY6QLLP7OFDP:/var/lib/docker/overlay2/l/P3EO3WHIM2XPDNPIFUP42EGMQI:/var/lib/docker/overlay2/l/EOSBLWDBASO7GKSDILC4XVGO45:/var/lib/docker/overlay2/l/7K7266OIDWAVXLAN6AA3SZXZQZ,upperdir=/var/lib/docker/overlay2/3695f349587aaa2cdc82fcde1a380c7b567ef870a47e4c28b8b279e4edc9eb40/diff,workdir=/var/lib/docker/overlay2/3695f349587aaa2cdc82fcde1a380c7b567ef870a47e4c28b8b279e4edc9eb40/work)[root@p22295v zhangzhifei]# ls /var/lib/docker/overlay2/3695f349587aaa2cdc82fcde1a380c7b567ef870a47e4c28b8b279e4edc9eb40/mergedbin boot dev etc home lib lib64 media mnt opt proc root run sbin srv sys tmp usr var[root@p22295v zhangzhifei]#
二、镜像在仓库中的数据结构以及应用
1.镜像存储的目录结构
├── blobs│ └── sha256│ │ └── dfa94d685d1c2179324f02bf2a119f6d8ee0d380cef5506566012f7c4936a04a│ │ └── data│ ├── e6│ │ └── e6ae4ac760c8457aca9be07de8ca66b3a358a19b950389a0d158ae885178f6cf│ │ └── data│ ├── e7│ │ └── e71de1ca8f2b18993c258e2bf50edea8c23ea4a78a821bcfef181de50b3c32f4│ │ └── data│ ├── e8│ ├── eb│ │ └── ebbcacd28e101968415b0c812b2d2dc60f969e36b0b08c073bf796e12b1bb449│ │ └── data│ ├── ee│ │ └── ee3d4cdf51349229906ff11db003cf23390eb2642ae2a6fbd75af933bb33318e│ │ └── data│ ├── f2│ │ └── f296fda86f10cfcb81d60d5bcb47a7784a8ec4876d6eac7fabd51f2a7e8694aa│ │ └── data│ ├── fc│ │ └── fc2476ccae2a5186313f2d1dadb4a969d6d2d4c6b23fa98b6c7b0a1faad67685│ │ └── data│ └── ff│ ├── ff3ccaa8321b5ee312fab2cfe679467af2ae7510bb84032bdc0324e1d2d0edec│ │ └── data│ └── ffe92548d2836f6ed88665bc7d5655a78a041ff8bb006c772af6bf2326ddb0a6│ └── data└── repositories├── registry-share-private│ ├── push-mount│ │ ├── _layers│ │ │ └── sha256│ │ │ ├── 1b1ad4542c99b8881265610cf5dc09e37d38445529a7584edb2a607fd783216f│ │ │ │ └── link│ │ │ ├── 286e9e279b970184db33b43fa5e25008ea0b711f39ec9849baffdc191c8fd1df│ │ │ │ └── link│ │ │ ├── 298de445ff18300c143569dcd324fbf0512de036fc25d52454834bb2386947e6│ │ │ │ └── link│ │ │ ├── 37e8bc3ffc7a76234d479e1a4ad8692773f04c667c48262598780575e20a169d│ │ │ │ └── link│ │ │ ├── 4af096619739efe5fd5966da63bf5e4db67ca9a7d9c44e0965b2b90d22a903d2│ │ │ │ └── link│ │ │ ├── 94af5ef9353dd0cd289df4ed00543f7dd0be6d746d84636435fd8d6ea2ccfee9│ │ │ │ └── link│ │ │ ├── a5a06a865ace7f8ee9988fcc391741f1206e02b0164a71f6d1d6a097aa3d500b│ │ │ │ └── link│ │ │ ├── a8325e15f27f6d97d6b39264e402d9ee9d53f721c1c6d83cc3e39e9c1ceeec8f│ │ │ │ └── link│ │ │ ├── d93a2d7cc901177e87182b2003d50fb3ffd5be3eb698f39f5c862264efe6ee99│ │ │ │ └── link│ │ │ └── ff3ccaa8321b5ee312fab2cfe679467af2ae7510bb84032bdc0324e1d2d0edec│ │ │ └── link│ │ ├── _manifests│ │ │ ├── revisions│ │ │ │ └── sha256│ │ │ │ └── 9e4cf4691735c02e59dd49ee561a3f5e56bccf78d57eaa94581e29f69a5162bd│ │ │ │ └── link│ │ │ └── tags│ │ │ └── v1│ │ │ ├── current│ │ │ │ └── link│ │ │ └── index│ │ │ └── sha256│ │ │ └── 9e4cf4691735c02e59dd49ee561a3f5e56bccf78d57eaa94581e29f69a5162bd│ │ │ └── link│ │ └── _uploads│ ├── push-new│ │ ├── _layers│ │ │ └── sha256│ │ │ ├── 1b1ad4542c99b8881265610cf5dc09e37d38445529a7584edb2a607fd783216f│ │ │ │ └── link│ │ │ ├── 286e9e279b970184db33b43fa5e25008ea0b711f39ec9849baffdc191c8fd1df│ │ │ │ └── link│ │ │ ├── 298de445ff18300c143569dcd324fbf0512de036fc25d52454834bb2386947e6│ │ │ │ └── link│ │ │ ├── 37e8bc3ffc7a76234d479e1a4ad8692773f04c667c48262598780575e20a169d│ │ │ │ └── link│ │ │ ├── 4af096619739efe5fd5966da63bf5e4db67ca9a7d9c44e0965b2b90d22a903d2│ │ │ │ └── link│ │ │ ├── 94af5ef9353dd0cd289df4ed00543f7dd0be6d746d84636435fd8d6ea2ccfee9│ │ │ │ └── link│ │ │ ├── a5a06a865ace7f8ee9988fcc391741f1206e02b0164a71f6d1d6a097aa3d500b│ │ │ │ └── link│ │ │ ├── a8325e15f27f6d97d6b39264e402d9ee9d53f721c1c6d83cc3e39e9c1ceeec8f│ │ │ │ └── link│ │ │ ├── d93a2d7cc901177e87182b2003d50fb3ffd5be3eb698f39f5c862264efe6ee99│ │ │ │ └── link│ │ │ └── ff3ccaa8321b5ee312fab2cfe679467af2ae7510bb84032bdc0324e1d2d0edec│ │ │ └── link│ │ ├── _manifests│ │ │ ├── revisions│ │ │ │ └── sha256│ │ │ │ └── 9e4cf4691735c02e59dd49ee561a3f5e56bccf78d57eaa94581e29f69a5162bd│ │ │ │ └── link│ │ │ └── tags│ │ │ └── v1│ │ │ ├── current│ │ │ │ └── link│ │ │ └── index│ │ │ └── sha256│ │ │ └── 9e4cf4691735c02e59dd49ee561a3f5e56bccf78d57eaa94581e29f69a5162bd│ │ │ └── link│ │ └──
registry-share-private/push-mount就是一个仓库名，registry-share-private相当于project的概念，push-mount容器名
2.上传镜像流程
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1、新镜像（各层在镜像仓库中不存在）
GET /v2/ HTTP/1.1Host: reg.myharbor.comUser-Agent: docker/1.13.1 go/go1.9.4 kernel/3.10.0-514.el7.x86_64 os/linux arch/amd64 UpstreamClient(Docker-Client/1.13.1 \(linux\))Accept-Encoding: gzipConnection: closeHTTP/1.1 401 UnauthorizedServer: nginxDate: Thu, 25 Jul 2019 12:26:18 GMTContent-Type: application/json; charset=utf-8Content-Length: 87Connection: closeDocker-Distribution-Api-Version: registry/2.0Set-Cookie: beegosessionID=f949e87ea41cfdff40d4eaaf5ec4d8ad; Path=/; HttpOnlyWww-Authenticate: Bearer realm="http://reg.myharbor.com/service/token",service="harbor-registry"{"errors":[{"code":"UNAUTHORIZED","message":"authentication required","detail":null}]}
GET /service/token?account=share&scope=repository%3Aregistry-share-private%2Fpush-new%3Apush%2Cpull&service=harbor-registry HTTP/1.1Host: reg.myharbor.comUser-Agent: docker/1.13.1 go/go1.9.4 kernel/3.10.0-514.el7.x86_64 os/linux arch/amd64 UpstreamClient(Docker-Client/1.13.1 \(linux\))Authorization: Basic c2hhcmU6U2hhcmUxMjM0NQ==Accept-Encoding: gzipConnection: closeHTTP/1.1 200 OKServer: nginxDate: Thu, 25 Jul 2019 12:26:18 GMTContent-Type: application/json; charset=utf-8Content-Length: 977Connection: closeContent-Encoding: gzipSet-Cookie: beegosessionID=b9847b82ec96b422708f2ca0f753ac21; Path=/; HttpOnly{"token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjNCTE86WFJIUzpKQjRDOkQ0M006M1hITDpQRTIyOk9SNjM6UzY2WTo3STc3OlVJQlA6RE5BVzozUTI0In0.eyJpc3MiOiJoYXJib3ItdG9rZW4taXNzdWVyIiwic3ViIjoic2hhcmUiLCJhdWQiOiJoYXJib3ItcmVnaXN0cnkiLCJleHAiOjE1NjQwNTkzNzgsIm5iZiI6MTU2NDA1NzU3OCwiaWF0IjoxNTY0MDU3NTc4LCJqdGkiOiJiZndhVFc5M2dzaE5va0wyIiwiYWNjZXNzIjpbeyJ0eXBlIjoicmVwb3NpdG9yeSIsIm5hbWUiOiJyZWdpc3RyeS1zaGFyZS1wcml2YXRlL3B1c2gtbmV3IiwiYWN0aW9ucyI6WyJwdXNoIiwicHVsbCJdfV19.WIeHdiwqnm-ATdYS08wHvrHb7HHHCJT81iWbkXch1xrUC0M6leR9dN3grzWO7ONjT7cwL3u_9Q2OP7_dPbneHSJvdHRImxfVF09-74pC9-QgdGB8jEB4mVzqDpgCqxmjtHWAayqhxvUWyuVSuFZXuC4Yk-P2G6TmxN2uF261Igl46iKQOL-4btYleHL9VfDxT4L50QC27s7gJuSNvo_8u5bLazz31NxMHdZZY7mo0PgtzCntJVL2eyuarw3GrVK5E3SkMlSqPxQ3qRViCS7bCDZbWMc7Tl8nNSQDi5xBq3nMlXPQ6ubC-7vVSqtVFf9o_wBOqp6HZbWlIU9mhfWNhtThoIT-nBTSyChJ8sXPDNV2xzbmzqj0dzHeuMyKw6l6BS3-iRqXkceeRj7ywv9RWw1lgRJBCCy8zR3i8e8CpBceWufGeUDClf9LWDzO7Y_5G3G4ORYlZV1tHuJhDPGYgaO6ykYwcyQjXmGOoGL4nEG1LN8xjs4LLgkSQ018MARjsAEiK4D-QZ7aMI9vout10BgyqojcAaxdV8IqK9St_-4rzL59zQ9nWgJ6rqah4PWXCMY4dP3hzZS_iP0W5c2_CW94qONtof1i3zOYgT_oHRLjN1xKHksSqha3t394_28o511FVInkhFT5YfBdtCYAL5VLfa0AtqaykX9MCGq1gBk","expires_in": 1800,"issued_at": "2019-07-25T12:26:18Z"}
HEAD /v2/registry-share-private/push-new/blobs/sha256:286e9e279b970184db33b43fa5e25008ea0b711f39ec9849baffdc191c8fd1df HTTP/1.1Host: reg.myharbor.comUser-Agent: docker/1.13.1 go/go1.9.4 kernel/3.10.0-514.el7.x86_64 os/linux arch/amd64 UpstreamClient(Docker-Client/1.13.1 \(linux\))Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjNCTE86WFJIUzpKQjRDOkQ0M006M1hITDpQRTIyOk9SNjM6UzY2WTo3STc3OlVJQlA6RE5BVzozUTI0In0.eyJpc3MiOiJoYXJib3ItdG9rZW4taXNzdWVyIiwic3ViIjoic2hhcmUiLCJhdWQiOiJoYXJib3ItcmVnaXN0cnkiLCJleHAiOjE1NjQwNTkzNzgsIm5iZiI6MTU2NDA1NzU3OCwiaWF0IjoxNTY0MDU3NTc4LCJqdGkiOiJiZndhVFc5M2dzaE5va0wyIiwiYWNjZXNzIjpbeyJ0eXBlIjoicmVwb3NpdG9yeSIsIm5hbWUiOiJyZWdpc3RyeS1zaGFyZS1wcml2YXRlL3B1c2gtbmV3IiwiYWN0aW9ucyI6WyJwdXNoIiwicHVsbCJdfV19.WIeHdiwqnm-ATdYS08wHvrHb7HHHCJT81iWbkXch1xrUC0M6leR9dN3grzWO7ONjT7cwL3u_9Q2OP7_dPbneHSJvdHRImxfVF09-74pC9-QgdGB8jEB4mVzqDpgCqxmjtHWAayqhxvUWyuVSuFZXuC4Yk-P2G6TmxN2uF261Igl46iKQOL-4btYleHL9VfDxT4L50QC27s7gJuSNvo_8u5bLazz31NxMHdZZY7mo0PgtzCntJVL2eyuarw3GrVK5E3SkMlSqPxQ3qRViCS7bCDZbWMc7Tl8nNSQDi5xBq3nMlXPQ6ubC-7vVSqtVFf9o_wBOqp6HZbWlIU9mhfWNhtThoIT-nBTSyChJ8sXPDNV2xzbmzqj0dzHeuMyKw6l6BS3-iRqXkceeRj7ywv9RWw1lgRJBCCy8zR3i8e8CpBceWufGeUDClf9LWDzO7Y_5G3G4ORYlZV1tHuJhDPGYgaO6ykYwcyQjXmGOoGL4nEG1LN8xjs4LLgkSQ018MARjsAEiK4D-QZ7aMI9vout10BgyqojcAaxdV8IqK9St_-4rzL59zQ9nWgJ6rqah4PWXCMY4dP3hzZS_iP0W5c2_CW94qONtof1i3zOYgT_oHRLjN1xKHksSqha3t394_28o511FVInkhFT5YfBdtCYAL5VLfa0AtqaykX9MCGq1gBkConnection: closeHTTP/1.1 404 Not FoundServer: nginxDate: Thu, 25 Jul 2019 12:26:18 GMTContent-Type: application/json; charset=utf-8Content-Length: 157Connection: closeDocker-Distribution-Api-Version: registry/2.0Set-Cookie: beegosessionID=a8aaecf9ffe64fa3cbf8807b937025ab; Path=/; HttpOnly
POST /v2/registry-share-private/push-new/blobs/uploads/ HTTP/1.1Host: reg.myharbor.comUser-Agent: docker/1.13.1 go/go1.9.4 kernel/3.10.0-514.el7.x86_64 os/linux arch/amd64 UpstreamClient(Docker-Client/1.13.1 \(linux\))Content-Length: 0Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjNCTE86WFJIUzpKQjRDOkQ0M006M1hITDpQRTIyOk9SNjM6UzY2WTo3STc3OlVJQlA6RE5BVzozUTI0In0.eyJpc3MiOiJoYXJib3ItdG9rZW4taXNzdWVyIiwic3ViIjoic2hhcmUiLCJhdWQiOiJoYXJib3ItcmVnaXN0cnkiLCJleHAiOjE1NjQwNTkzNzgsIm5iZiI6MTU2NDA1NzU3OCwiaWF0IjoxNTY0MDU3NTc4LCJqdGkiOiJiZndhVFc5M2dzaE5va0wyIiwiYWNjZXNzIjpbeyJ0eXBlIjoicmVwb3NpdG9yeSIsIm5hbWUiOiJyZWdpc3RyeS1zaGFyZS1wcml2YXRlL3B1c2gtbmV3IiwiYWN0aW9ucyI6WyJwdXNoIiwicHVsbCJdfV19.WIeHdiwqnm-ATdYS08wHvrHb7HHHCJT81iWbkXch1xrUC0M6leR9dN3grzWO7ONjT7cwL3u_9Q2OP7_dPbneHSJvdHRImxfVF09-74pC9-QgdGB8jEB4mVzqDpgCqxmjtHWAayqhxvUWyuVSuFZXuC4Yk-P2G6TmxN2uF261Igl46iKQOL-4btYleHL9VfDxT4L50QC27s7gJuSNvo_8u5bLazz31NxMHdZZY7mo0PgtzCntJVL2eyuarw3GrVK5E3SkMlSqPxQ3qRViCS7bCDZbWMc7Tl8nNSQDi5xBq3nMlXPQ6ubC-7vVSqtVFf9o_wBOqp6HZbWlIU9mhfWNhtThoIT-nBTSyChJ8sXPDNV2xzbmzqj0dzHeuMyKw6l6BS3-iRqXkceeRj7ywv9RWw1lgRJBCCy8zR3i8e8CpBceWufGeUDClf9LWDzO7Y_5G3G4ORYlZV1tHuJhDPGYgaO6ykYwcyQjXmGOoGL4nEG1LN8xjs4LLgkSQ018MARjsAEiK4D-QZ7aMI9vout10BgyqojcAaxdV8IqK9St_-4rzL59zQ9nWgJ6rqah4PWXCMY4dP3hzZS_iP0W5c2_CW94qONtof1i3zOYgT_oHRLjN1xKHksSqha3t394_28o511FVInkhFT5YfBdtCYAL5VLfa0AtqaykX9MCGq1gBkContent-Type:Accept-Encoding: gzipConnection: closeHTTP/1.1 202 AcceptedServer: nginxDate: Thu, 25 Jul 2019 12:26:19 GMTContent-Type: text/plain; charset=utf-8Content-Length: 0Connection: closeDocker-Distribution-Api-Version: registry/2.0Docker-Upload-Uuid: 6178733d-0607-4245-a092-6104cb784bf2Location: http://reg.myharbor.com/v2/registry-share-private/push-new/blobs/uploads/6178733d-0607-4245-a092-6104cb784bf2?_state=pKHNnX7zDiLowkh6Gin5zTfCas2AmKuyyrmVMRNx74x7Ik5hbWUiOiJyZWdpc3RyeS1zaGFyZS1wcml2YXRlL3B1c2gtbmV3IiwiVVVJRCI6IjYxNzg3MzNkLTA2MDctNDI0NS1hMDkyLTYxMDRjYjc4NGJmMiIsIk9mZnNldCI6MCwiU3RhcnRlZEF0IjoiMjAxOS0wNy0yNVQxMjoyNjoxOC44MTMxOTUzNjZaIn0%3DRange: 0-0Set-Cookie: beegosessionID=f5a3ac2921aca8e3afdbb465b0100cd2; Path=/; HttpOnly
PATCH /v2/registry-share-private/push-new/blobs/uploads/6178733d-0607-4245-a092-6104cb784bf2?_state=pKHNnX7zDiLowkh6Gin5zTfCas2AmKuyyrmVMRNx74x7Ik5hbWUiOiJyZWdpc3RyeS1zaGFyZS1wcml2YXRlL3B1c2gtbmV3IiwiVVVJRCI6IjYxNzg3MzNkLTA2MDctNDI0NS1hMDkyLTYxMDRjYjc4NGJmMiIsIk9mZnNldCI6MCwiU3RhcnRlZEF0IjoiMjAxOS0wNy0yNVQxMjoyNjoxOC44MTMxOTUzNjZaIn0%3D HTTP/1.1Host: reg.myharbor.com: docker/1.13.1 go/go1.9.4 kernel/3.10.0-514.el7.x86_64 os/linux arch/amd64 UpstreamClient(Docker-Client/1.13.1 \(linux\)): chunkedAuthorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjNCTE86WFJIUzpKQjRDOkQ0M006M1hITDpQRTIyOk9SNjM6UzY2WTo3STc3OlVJQlA6RE5BVzozUTI0In0.eyJpc3MiOiJoYXJib3ItdG9rZW4taXNzdWVyIiwic3ViIjoic2hhcmUiLCJhdWQiOiJoYXJib3ItcmVnaXN0cnkiLCJleHAiOjE1NjQwNTkzNzgsIm5iZiI6MTU2NDA1NzU3OCwiaWF0IjoxNTY0MDU3NTc4LCJqdGkiOiJiZndhVFc5M2dzaE5va0wyIiwiYWNjZXNzIjpbeyJ0eXBlIjoicmVwb3NpdG9yeSIsIm5hbWUiOiJyZWdpc3RyeS1zaGFyZS1wcml2YXRlL3B1c2gtbmV3IiwiYWN0aW9ucyI6WyJwdXNoIiwicHVsbCJdfV19.WIeHdiwqnm-ATdYS08wHvrHb7HHHCJT81iWbkXch1xrUC0M6leR9dN3grzWO7ONjT7cwL3u_9Q2OP7_dPbneHSJvdHRImxfVF09-74pC9-QgdGB8jEB4mVzqDpgCqxmjtHWAayqhxvUWyuVSuFZXuC4Yk-P2G6TmxN2uF261Igl46iKQOL-4btYleHL9VfDxT4L50QC27s7gJuSNvo_8u5bLazz31NxMHdZZY7mo0PgtzCntJVL2eyuarw3GrVK5E3SkMlSqPxQ3qRViCS7bCDZbWMc7Tl8nNSQDi5xBq3nMlXPQ6ubC-7vVSqtVFf9o_wBOqp6HZbWlIU9mhfWNhtThoIT-nBTSyChJ8sXPDNV2xzbmzqj0dzHeuMyKw6l6BS3-iRqXkceeRj7ywv9RWw1lgRJBCCy8zR3i8e8CpBceWufGeUDClf9LWDzO7Y_5G3G4ORYlZV1tHuJhDPGYgaO6ykYwcyQjXmGOoGL4nEG1LN8xjs4LLgkSQ018MARjsAEiK4D-QZ7aMI9vout10BgyqojcAaxdV8IqK9St_-4rzL59zQ9nWgJ6rqah4PWXCMY4dP3hzZS_iP0W5c2_CW94qONtof1i3zOYgT_oHRLjN1xKHksSqha3t394_28o511FVInkhFT5YfBdtCYAL5VLfa0AtqaykX9MCGq1gBk: gzipConnection: close....n_.I.*R.H-...6....o`..C12....,...6...R..\'DY..r..K.C4.@.i.........Qg.:...*.........pI..zc.M....,....!.s didl.!.. Yh...! k......v1...g...m..........*..........g.n...k....!....]....8?... .F........._.......j#.....HTTP/1.1 202 AcceptedServer: nginxDate: Thu, 25 Jul 2019 12:26:19 GMT: text/plain; charset=utf-8: 0Connection: close: registry/2.0: 6178733d-0607-4245-a092-6104cb784bf2Location: http://reg.myharbor.com/v2/registry-share-private/push-new/blobs/uploads/6178733d-0607-4245-a092-6104cb784bf2?_state=19TYI6CYz6LohGdEhCNv7veQG2M77lz8q1evuLOEZU17Ik5hbWUiOiJyZWdpc3RyeS1zaGFyZS1wcml2YXRlL3B1c2gtbmV3IiwiVVVJRCI6IjYxNzg3MzNkLTA2MDctNDI0NS1hMDkyLTYxMDRjYjc4NGJmMiIsIk9mZnNldCI6MzMzLCJTdGFydGVkQXQiOiIyMDE5LTA3LTI1VDEyOjI2OjE4WiJ9Range: 0-332: beegosessionID=8407c7ba275391b58314b94aed502179; Path=/; HttpOnly
PUT /v2/registry-share-private/push-new/blobs/uploads/6178733d-0607-4245-a092-6104cb784bf2?_state=19TYI6CYz6LohGdEhCNv7veQG2M77lz8q1evuLOEZU17Ik5hbWUiOiJyZWdpc3RyeS1zaGFyZS1wcml2YXRlL3B1c2gtbmV3IiwiVVVJRCI6IjYxNzg3MzNkLTA2MDctNDI0NS1hMDkyLTYxMDRjYjc4NGJmMiIsIk9mZnNldCI6MzMzLCJTdGFydGVkQXQiOiIyMDE5LTA3LTI1VDEyOjI2OjE4WiJ9&digest=sha256%3A286e9e279b970184db33b43fa5e25008ea0b711f39ec9849baffdc191c8fd1df HTTP/1.1Host: reg.myharbor.comUser-Agent: docker/1.13.1 go/go1.9.4 kernel/3.10.0-514.el7.x86_64 os/linux arch/amd64 UpstreamClient(Docker-Client/1.13.1 \(linux\))Content-Length: 0Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjNCTE86WFJIUzpKQjRDOkQ0M006M1hITDpQRTIyOk9SNjM6UzY2WTo3STc3OlVJQlA6RE5BVzozUTI0In0.eyJpc3MiOiJoYXJib3ItdG9rZW4taXNzdWVyIiwic3ViIjoic2hhcmUiLCJhdWQiOiJoYXJib3ItcmVnaXN0cnkiLCJleHAiOjE1NjQwNTkzNzgsIm5iZiI6MTU2NDA1NzU3OCwiaWF0IjoxNTY0MDU3NTc4LCJqdGkiOiJiZndhVFc5M2dzaE5va0wyIiwiYWNjZXNzIjpbeyJ0eXBlIjoicmVwb3NpdG9yeSIsIm5hbWUiOiJyZWdpc3RyeS1zaGFyZS1wcml2YXRlL3B1c2gtbmV3IiwiYWN0aW9ucyI6WyJwdXNoIiwicHVsbCJdfV19.WIeHdiwqnm-ATdYS08wHvrHb7HHHCJT81iWbkXch1xrUC0M6leR9dN3grzWO7ONjT7cwL3u_9Q2OP7_dPbneHSJvdHRImxfVF09-74pC9-QgdGB8jEB4mVzqDpgCqxmjtHWAayqhxvUWyuVSuFZXuC4Yk-P2G6TmxN2uF261Igl46iKQOL-4btYleHL9VfDxT4L50QC27s7gJuSNvo_8u5bLazz31NxMHdZZY7mo0PgtzCntJVL2eyuarw3GrVK5E3SkMlSqPxQ3qRViCS7bCDZbWMc7Tl8nNSQDi5xBq3nMlXPQ6ubC-7vVSqtVFf9o_wBOqp6HZbWlIU9mhfWNhtThoIT-nBTSyChJ8sXPDNV2xzbmzqj0dzHeuMyKw6l6BS3-iRqXkceeRj7ywv9RWw1lgRJBCCy8zR3i8e8CpBceWufGeUDClf9LWDzO7Y_5G3G4ORYlZV1tHuJhDPGYgaO6ykYwcyQjXmGOoGL4nEG1LN8xjs4LLgkSQ018MARjsAEiK4D-QZ7aMI9vout10BgyqojcAaxdV8IqK9St_-4rzL59zQ9nWgJ6rqah4PWXCMY4dP3hzZS_iP0W5c2_CW94qONtof1i3zOYgT_oHRLjN1xKHksSqha3t394_28o511FVInkhFT5YfBdtCYAL5VLfa0AtqaykX9MCGq1gBkAccept-Encoding: gzipConnection: closeHTTP/1.1 201 CreatedServer: nginxDate: Thu, 25 Jul 2019 12:26:19 GMTContent-Type: text/plain; charset=utf-8Content-Length: 0Connection: closeDocker-Content-Digest: sha256:286e9e279b970184db33b43fa5e25008ea0b711f39ec9849baffdc191c8fd1dfDocker-Distribution-Api-Version: registry/2.0Location: http://reg.myharbor.com/v2/registry-share-private/push-new/blobs/sha256:286e9e279b970184db33b43fa5e25008ea0b711f39ec9849baffdc191c8fd1dfSet-Cookie: beegosessionID=157cb059f1bd7f8d37897952392a9082; Path=/; HttpOnly
上传mainfest
PUT /v2/registry-share-private/push-new/manifests/v1 HTTP/1.1Host: reg.myharbor.comUser-Agent: docker/1.13.1 go/go1.9.4 kernel/3.10.0-514.el7.x86_64 os/linux arch/amd64 UpstreamClient(Docker-Client/1.13.1 \(linux\))Content-Length: 2205Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjNCTE86WFJIUzpKQjRDOkQ0M006M1hITDpQRTIyOk9SNjM6UzY2WTo3STc3OlVJQlA6RE5BVzozUTI0In0.eyJpc3MiOiJoYXJib3ItdG9rZW4taXNzdWVyIiwic3ViIjoic2hhcmUiLCJhdWQiOiJoYXJib3ItcmVnaXN0cnkiLCJleHAiOjE1NjQwNTkzNzgsIm5iZiI6MTU2NDA1NzU3OCwiaWF0IjoxNTY0MDU3NTc4LCJqdGkiOiJiZndhVFc5M2dzaE5va0wyIiwiYWNjZXNzIjpbeyJ0eXBlIjoicmVwb3NpdG9yeSIsIm5hbWUiOiJyZWdpc3RyeS1zaGFyZS1wcml2YXRlL3B1c2gtbmV3IiwiYWN0aW9ucyI6WyJwdXNoIiwicHVsbCJdfV19.WIeHdiwqnm-ATdYS08wHvrHb7HHHCJT81iWbkXch1xrUC0M6leR9dN3grzWO7ONjT7cwL3u_9Q2OP7_dPbneHSJvdHRImxfVF09-74pC9-QgdGB8jEB4mVzqDpgCqxmjtHWAayqhxvUWyuVSuFZXuC4Yk-P2G6TmxN2uF261Igl46iKQOL-4btYleHL9VfDxT4L50QC27s7gJuSNvo_8u5bLazz31NxMHdZZY7mo0PgtzCntJVL2eyuarw3GrVK5E3SkMlSqPxQ3qRViCS7bCDZbWMc7Tl8nNSQDi5xBq3nMlXPQ6ubC-7vVSqtVFf9o_wBOqp6HZbWlIU9mhfWNhtThoIT-nBTSyChJ8sXPDNV2xzbmzqj0dzHeuMyKw6l6BS3-iRqXkceeRj7ywv9RWw1lgRJBCCy8zR3i8e8CpBceWufGeUDClf9LWDzO7Y_5G3G4ORYlZV1tHuJhDPGYgaO6ykYwcyQjXmGOoGL4nEG1LN8xjs4LLgkSQ018MARjsAEiK4D-QZ7aMI9vout10BgyqojcAaxdV8IqK9St_-4rzL59zQ9nWgJ6rqah4PWXCMY4dP3hzZS_iP0W5c2_CW94qONtof1i3zOYgT_oHRLjN1xKHksSqha3t394_28o511FVInkhFT5YfBdtCYAL5VLfa0AtqaykX9MCGq1gBkContent-Type: application/vnd.docker.distribution.manifest.v2+jsonAccept-Encoding: gzipConnection: close{"schemaVersion": 2,"mediaType": "application/vnd.docker.distribution.manifest.v2+json","config": {"mediaType": "application/vnd.docker.container.image.v1+json","size": 8216,"digest": "sha256:298de445ff18300c143569dcd324fbf0512de036fc25d52454834bb2386947e6"},"layers": [{"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip","size": 52595547,"digest": "sha256:d93a2d7cc901177e87182b2003d50fb3ffd5be3eb698f39f5c862264efe6ee99"},{"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip","size": 3635843,"digest": "sha256:1b1ad4542c99b8881265610cf5dc09e37d38445529a7584edb2a607fd783216f"},{"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip","size": 19806611,"digest": "sha256:ff3ccaa8321b5ee312fab2cfe679467af2ae7510bb84032bdc0324e1d2d0edec"},{"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip","size": 241,"digest": "sha256:a5a06a865ace7f8ee9988fcc391741f1206e02b0164a71f6d1d6a097aa3d500b"},{"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip","size": 1969212,"digest": "sha256:a8325e15f27f6d97d6b39264e402d9ee9d53f721c1c6d83cc3e39e9c1ceeec8f"},{"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip","size": 132,"digest": "sha256:94af5ef9353dd0cd289df4ed00543f7dd0be6d746d84636435fd8d6ea2ccfee9"},{"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip","size": 333,"digest": "sha256:286e9e279b970184db33b43fa5e25008ea0b711f39ec9849baffdc191c8fd1df"},{"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip","size": 22311565,"digest": "sha256:37e8bc3ffc7a76234d479e1a4ad8692773f04c667c48262598780575e20a169d"},{"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip","size": 35106,"digest": "sha256:4af096619739efe5fd5966da63bf5e4db67ca9a7d9c44e0965b2b90d22a903d2"}]}HTTP/1.1 201 CreatedServer: nginxDate: Thu, 25 Jul 2019 12:26:36 GMTContent-Type: text/plain; charset=utf-8Content-Length: 0Connection: closeDocker-Content-Digest: sha256:9e4cf4691735c02e59dd49ee561a3f5e56bccf78d57eaa94581e29f69a5162bdDocker-Distribution-Api-Version: registry/2.0Location: http://reg.myharbor.com/v2/registry-share-private/push-new/manifests/sha256:9e4cf4691735c02e59dd49ee561a3f5e56bccf78d57eaa94581e29f69a5162bdSet-Cookie: beegosessionID=2b449cbfaea72b978aabc8c32c3617d7; Path=/; HttpOnly
2、部分层在其他仓库中已经存在并且有读权限
GET /service/token?account=share&scope=repository%3Aregistry-share-private%2Fpush-mount%3Apush%2Cpull&scope=repository%3Aregistry-share-private%2Fpush-new%3Apull&service=harbor-registry HTTP/1.1Host: reg.myharbor.comUser-Agent: docker/1.13.1 go/go1.9.4 kernel/3.10.0-514.el7.x86_64 os/linux arch/amd64 UpstreamClient(Docker-Client/1.13.1 \(linux\))Authorization: Basic c2hhcmU6U2hhcmUxMjM0NQ==Accept-Encoding: gzipConnection: closeHTTP/1.1 200 OKServer: nginxDate: Thu, 25 Jul 2019 12:27:45 GMTContent-Type: application/json; charset=utf-8Content-Length: 1065Connection: closeContent-Encoding: gzipSet-Cookie: beegosessionID=c27746a125006bd70a24d75205a4008c; Path=/; HttpOnly{"token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjNCTE86WFJIUzpKQjRDOkQ0M006M1hITDpQRTIyOk9SNjM6UzY2WTo3STc3OlVJQlA6RE5BVzozUTI0In0.eyJpc3MiOiJoYXJib3ItdG9rZW4taXNzdWVyIiwic3ViIjoic2hhcmUiLCJhdWQiOiJoYXJib3ItcmVnaXN0cnkiLCJleHAiOjE1NjQwNTk0NjUsIm5iZiI6MTU2NDA1NzY2NSwiaWF0IjoxNTY0MDU3NjY1LCJqdGkiOiJBV29mNnVQYmhNM1hpMkRRIiwiYWNjZXNzIjpbeyJ0eXBlIjoicmVwb3NpdG9yeSIsIm5hbWUiOiJyZWdpc3RyeS1zaGFyZS1wcml2YXRlL3B1c2gtbW91bnQiLCJhY3Rpb25zIjpbInB1c2giLCJwdWxsIl19LHsidHlwZSI6InJlcG9zaXRvcnkiLCJuYW1lIjoicmVnaXN0cnktc2hhcmUtcHJpdmF0ZS9wdXNoLW5ldyIsImFjdGlvbnMiOlsicHVzaCIsInB1bGwiXX1dfQ.lQuoMmPI5SMlezxLN4RloK0wQnYQg-53oa0ZT7wE3ejzktQAEciR5LKDiPHo5OvMCiLcT50Z9zDdIaKwzRP7WAJT_WaaH0XNjvsB65M4HVAMq5p8lSz4skmCTsvW32pnDyLeCN1Rel3Vf876MbTXMmY2NM3PMqq3CnHOm-A02G2oZSwVmVsMvib3uSFNL5OFflXcZSyaTcZOEccwloND0OghbdLh6mx8sp-UYB-SeFWRu-poy9weMi7_gbxsk2IGjoqTIhGY8AMlrgjEYvq6RP2pclZxioPwW2wpJJXNDkv4G3Hbxpn9u6qe_TzpNmVhdJj6D48nm07W8R9rgfwegU8J7ZspdA-gKbA79C3gKpusrgPMGIJQweXxdPxlJ6i2pnZXS3boaeuB8q-I9_9bTvAQLisD_D5Ricbm-PtCKmoXzEYruBtFB4TFexynUmI52-zzHqQktMlp7egASBhcDXCICrCQxNsIbvqJKK1W9BcF6p_zW4eG5JdIxDiXIRQr2FyjrT9CX2Ync_km3on6gWewoWNQGPbJbhq3TTnpd1CCSP4x6E2bZAY4gMy4mUCkN5BzoY7pf1RUJEd_VGVm3P9N3aEORxAJb3QCAwgmW8LY2yg3c3VOgkMQp2gBPg1VgKiw3CsTzzEf73cIyL2SL4v5w1_ybAU6T81e837E8oQ","expires_in": 1800,"issued_at": "2019-07-25T12:27:45Z"}
POST /v2/registry-share-private/push-mount/blobs/uploads/?from=registry-share-private%2Fpush-new&mount=sha256%3Aa8325e15f27f6d97d6b39264e402d9ee9d53f721c1c6d83cc3e39e9c1ceeec8f HTTP/1.1Host: reg.myharbor.comUser-Agent: docker/1.13.1 go/go1.9.4 kernel/3.10.0-514.el7.x86_64 os/linux arch/amd64 UpstreamClient(Docker-Client/1.13.1 \(linux\))Content-Length: 0Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjNCTE86WFJIUzpKQjRDOkQ0M006M1hITDpQRTIyOk9SNjM6UzY2WTo3STc3OlVJQlA6RE5BVzozUTI0In0.eyJpc3MiOiJoYXJib3ItdG9rZW4taXNzdWVyIiwic3ViIjoic2hhcmUiLCJhdWQiOiJoYXJib3ItcmVnaXN0cnkiLCJleHAiOjE1NjQwNTk0NjUsIm5iZiI6MTU2NDA1NzY2NSwiaWF0IjoxNTY0MDU3NjY1LCJqdGkiOiJBV29mNnVQYmhNM1hpMkRRIiwiYWNjZXNzIjpbeyJ0eXBlIjoicmVwb3NpdG9yeSIsIm5hbWUiOiJyZWdpc3RyeS1zaGFyZS1wcml2YXRlL3B1c2gtbW91bnQiLCJhY3Rpb25zIjpbInB1c2giLCJwdWxsIl19LHsidHlwZSI6InJlcG9zaXRvcnkiLCJuYW1lIjoicmVnaXN0cnktc2hhcmUtcHJpdmF0ZS9wdXNoLW5ldyIsImFjdGlvbnMiOlsicHVzaCIsInB1bGwiXX1dfQ.lQuoMmPI5SMlezxLN4RloK0wQnYQg-53oa0ZT7wE3ejzktQAEciR5LKDiPHo5OvMCiLcT50Z9zDdIaKwzRP7WAJT_WaaH0XNjvsB65M4HVAMq5p8lSz4skmCTsvW32pnDyLeCN1Rel3Vf876MbTXMmY2NM3PMqq3CnHOm-A02G2oZSwVmVsMvib3uSFNL5OFflXcZSyaTcZOEccwloND0OghbdLh6mx8sp-UYB-SeFWRu-poy9weMi7_gbxsk2IGjoqTIhGY8AMlrgjEYvq6RP2pclZxioPwW2wpJJXNDkv4G3Hbxpn9u6qe_TzpNmVhdJj6D48nm07W8R9rgfwegU8J7ZspdA-gKbA79C3gKpusrgPMGIJQweXxdPxlJ6i2pnZXS3boaeuB8q-I9_9bTvAQLisD_D5Ricbm-PtCKmoXzEYruBtFB4TFexynUmI52-zzHqQktMlp7egASBhcDXCICrCQxNsIbvqJKK1W9BcF6p_zW4eG5JdIxDiXIRQr2FyjrT9CX2Ync_km3on6gWewoWNQGPbJbhq3TTnpd1CCSP4x6E2bZAY4gMy4mUCkN5BzoY7pf1RUJEd_VGVm3P9N3aEORxAJb3QCAwgmW8LY2yg3c3VOgkMQp2gBPg1VgKiw3CsTzzEf73cIyL2SL4v5w1_ybAU6T81e837E8oQContent-Type:Accept-Encoding: gzipConnection: closeHTTP/1.1 201 CreatedServer: nginxDate: Thu, 25 Jul 2019 12:27:45 GMTContent-Type: text/plain; charset=utf-8Content-Length: 0Connection: closeDocker-Content-Digest: sha256:a8325e15f27f6d97d6b39264e402d9ee9d53f721c1c6d83cc3e39e9c1ceeec8fDocker-Distribution-Api-Version: registry/2.0Location: http://reg.myharbor.com/v2/registry-share-private/push-mount/blobs/sha256:a8325e15f27f6d97d6b39264e402d9ee9d53f721c1c6d83cc3e39e9c1ceeec8fSet-Cookie: beegosessionID=28c3b965f60774b92c3f9eb4c7e75b02; Path=/; HttpOnly
3、部分层在其他仓库中已经存在并且没有读权限
4、镜像已经存在
三、镜像的管理和安全
镜像仓库的管理 镜像仓库是存储和管理容器镜像的重要设施，包括公共仓库（如Docker Hub）和私有仓库。在使用公共仓库时，要注意镜像的来源和安全性，避免使用未经授权或存在安全风险的镜像。对于企业内部的私有仓库，要建立完善的镜像管理机制，包括镜像的上传、下载、版本控制、权限管理等。例如，企业可以设置不同的用户角色对私有仓库中的镜像进行不同级别的操作，如管理员可以上传和删除镜像，开发人员可以下载和使用镜像等。 镜像的安全扫描和漏洞管理 由于容器镜像可能包含各种软件组件，这些组件可能存在安全漏洞，因此对镜像进行安全扫描是非常必要的。可以使用专门的镜像安全扫描工具来检测镜像中的漏洞，并及时进行修复。例如，在构建和部署容器镜像之前，先对镜像进行安全扫描，如果发现有高危漏洞，就停止部署并对镜像进行修复，以确保应用程序的安全性。同时，镜像的签名和验证机制也可以用来保证镜像的来源可靠，防止恶意镜像的使用。 资源利用和成本控制
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