[case34]jib打包docker镜像实战

wupengyu 发布于2019-06-28 16:35 / 710人阅读

摘要：比如该目录下有，则对应该镜像目录为打包使用是在本地打包镜像，不到远程，参数是显示信息如果使用命令，则打包之后到远程输出日志实例查看镜像可以看到指定了这三个文件夹小结默认执行如下操作也就是将拷贝到，将拷贝到，将拷贝到

序

本文主要研究一下如何使用google的jib打包docker镜像

maven

            
                com.google.cloud.tools
                jib-maven-plugin
                0.9.9

配置

    
        UTF-8
        UTF-8
        1.8
        yyyyMMdd
    


    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
            
            
                com.google.cloud.tools
                jib-maven-plugin
                0.9.9
                
                    
                        
                            -Xms512m
                        
                        
                            8080
                        
                        true
                    
                    
                        java:8u172-jre-alpine
                    
                    
                        jib-demo:${maven.build.timestamp}
                    
                    true
                    ${project.basedir}/src/main/jib

这里指定base image为java:8u172-jre-alpine

同时指定生成的image名称为jib-demo:${maven.build.timestamp}

container标签可以指定相关参数，比如jvmFlags指定JVM参数，ports指定expose的端口号

extraDirectory用于指定要添加的目录，默认为${project.basedir}/src/main/jib，即该目录下的文件夹会在docker镜像里头同步创建，目录层级关系以jib下目录层级关系为准。比如该目录下有app/resources/demo.txt，则对应该镜像目录为/app/resources/demo.txt

打包

mvn compile jib:dockerBuild -X

使用jib:dockerBuild是在本地打包镜像，不push到远程，-X参数是显示debug信息

如果使用jib:build命令，则打包之后push到远程

输出日志实例：

[DEBUG] TIMING    Building image to Docker daemon
[DEBUG] RUNNING    Building image to Docker daemon
[INFO] Getting base image java:8u172-jre-alpine...
[DEBUG] TIMING    Pulling base image manifest
[DEBUG] RUNNING    Pulling base image manifest
[DEBUG] TIMING    Building application layers
[DEBUG] RUNNING    Building application layers
[INFO] Building dependencies layer...
[DEBUG] TIMING    Building dependencies layer
[DEBUG] RUNNING    Building dependencies layer
[INFO] Building resources layer...
[DEBUG] TIMING    Building resources layer
[DEBUG] RUNNING    Building resources layer
[INFO] Building classes layer...
[DEBUG] TIMING    Building classes layer
[DEBUG] RUNNING    Building classes layer
[INFO] Building extra files layer...
[DEBUG] TIMING    Building extra files layer
[DEBUG] RUNNING    Building extra files layer
[DEBUG] TIMED    Building application layers : 3.498 ms
[DEBUG] Building application layers : 3.498 ms
[DEBUG] Building extra files layer built sha256:0a9321c621ee2c138d9a93f4ba47f825e20dd7aca0e9206f30bf560122fdaa31
[DEBUG] Building resources layer built sha256:933116c8da4db70000355b750af2f3b5c4545e74db7b5eb0a5e37689ef86d44f
[DEBUG] Building classes layer built sha256:a99dbde7d015ba3d15b9265ac38f6536d65b00dd2a864b7003a34742f483939b
[DEBUG] TIMED    Building extra files layer : 33.718 ms
[DEBUG] TIMED    Building classes layer : 33.901 ms
[DEBUG] Building extra files layer : 33.718 ms
[DEBUG] TIMED    Building resources layer : 34.062 ms
[DEBUG] Building resources layer : 34.062 ms
[DEBUG] Building classes layer : 33.901 ms
[DEBUG] Building dependencies layer built sha256:a19961ec08095eb70ca3a070945223dcf51500a255a745272276139bf0a29f4e
[DEBUG] TIMED    Building dependencies layer : 1047.83 ms
[DEBUG] Building dependencies layer : 1047.83 ms
[INFO] The base image requires auth. Trying again for java:8u172-jre-alpine...
//......
[DEBUG] TIMED    Pulling base image manifest : 8959.891 ms
[DEBUG] Pulling base image manifest : 8959.891 ms
[DEBUG] TIMING    Setting up base image caching
[DEBUG] RUNNING    Setting up base image caching
[DEBUG] TIMED    Setting up base image caching : 0.824 ms
[DEBUG] Setting up base image caching : 0.824 ms
[DEBUG] TIMING    Pulling base image layer sha256:500c0ac4cdc58aee9a008e70466eeec8a4b74b25c29d003764635d2fe1b42827
[DEBUG] RUNNING    Pulling base image layer sha256:500c0ac4cdc58aee9a008e70466eeec8a4b74b25c29d003764635d2fe1b42827
[DEBUG] TIMING    Pulling base image layer sha256:aa38cd8c77d7320c7489327775e074580db5f23467198aab3e79c7db5cdfbdca
[DEBUG] TIMING    Pulling base image layer sha256:cb56d62302ec31640b40ca15843e7af6be145966a1064c78ea7afd6f10ce49e6
[DEBUG] RUNNING    Pulling base image layer sha256:cb56d62302ec31640b40ca15843e7af6be145966a1064c78ea7afd6f10ce49e6
[DEBUG] TIMING    Pulling base image layer sha256:ff3a5c916c92643ff77519ffa742d3ec61b7f591b6b7504599d95a4a41134e28
[DEBUG] RUNNING    Pulling base image layer sha256:ff3a5c916c92643ff77519ffa742d3ec61b7f591b6b7504599d95a4a41134e28
[DEBUG] RUNNING    Pulling base image layer sha256:aa38cd8c77d7320c7489327775e074580db5f23467198aab3e79c7db5cdfbdca
[DEBUG] TIMED    Pulling base image layer sha256:500c0ac4cdc58aee9a008e70466eeec8a4b74b25c29d003764635d2fe1b42827 : 612.524 ms
[DEBUG] Pulling base image layer sha256:500c0ac4cdc58aee9a008e70466eeec8a4b74b25c29d003764635d2fe1b42827 : 612.524 ms
[DEBUG] TIMED    Pulling base image layer sha256:ff3a5c916c92643ff77519ffa742d3ec61b7f591b6b7504599d95a4a41134e28 : 9985.702 ms
[DEBUG] Pulling base image layer sha256:ff3a5c916c92643ff77519ffa742d3ec61b7f591b6b7504599d95a4a41134e28 : 9985.702 ms
[DEBUG] TIMED    Pulling base image layer sha256:aa38cd8c77d7320c7489327775e074580db5f23467198aab3e79c7db5cdfbdca : 27267.144 ms
[DEBUG] Pulling base image layer sha256:aa38cd8c77d7320c7489327775e074580db5f23467198aab3e79c7db5cdfbdca : 27267.144 ms
[DEBUG] TIMED    Pulling base image layer sha256:cb56d62302ec31640b40ca15843e7af6be145966a1064c78ea7afd6f10ce49e6 : 54734.971 ms
[DEBUG] Pulling base image layer sha256:cb56d62302ec31640b40ca15843e7af6be145966a1064c78ea7afd6f10ce49e6 : 54734.971 ms
[DEBUG] TIMING    Building container configuration
[DEBUG] RUNNING    Building container configuration
[INFO] Finalizing...
[DEBUG] TIMED    Building container configuration : 0.462 ms
[DEBUG] Building container configuration : 0.462 ms
[INFO] Loading to Docker daemon...
[DEBUG] TIMED    Building image to Docker daemon : 65862.956 ms
[DEBUG] Building image to Docker daemon : 65862.956 ms
[INFO]
[INFO] Container entrypoint set to [java, -Xms512m, -cp, /app/resources/:/app/classes/:/app/libs/*, com.example.JibDemoApplication]
[INFO]
[INFO] Built image to Docker daemon as jib-demo:20180826
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:07 min
[INFO] Finished at: 2018-08-26T21:38:11+08:00
[INFO] Final Memory: 26M/493M
[INFO] ------------------------------------------------------------------------

查看镜像

docker inspect jib-demo:20180826
[
    {
        "Id": "sha256:7554492dde84091bc6d015b29ec4bf854bb841b9ec4d8f7bef8b51a8ec59ef94",
        "RepoTags": [
            "jib-demo:20180826"
        ],
        "RepoDigests": [],
        "Parent": "",
        "Comment": "",
        "Created": "2018-08-26T13:37:05.65Z",
        "Container": "",
        "ContainerConfig": {
            "Hostname": "",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": null,
            "Cmd": null,
            "Image": "",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": null
        },
        "DockerVersion": "",
        "Author": "",
        "Config": {
            "Hostname": "",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {
                "8080/tcp": {}
            },
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "PATH=/opt/jdk1.8.0_172/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "JAVA_HOME=/opt/jdk1.8.0_172"
            ],
            "Cmd": [],
            "Image": "",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": [
                "java",
                "-Xms512m",
                "-cp",
                "/app/resources/:/app/classes/:/app/libs/*",
                "com.example.JibDemoApplication"
            ],
            "OnBuild": null,
            "Labels": {}
        },
        "Architecture": "amd64",
        "Os": "linux",
        "Size": 186079594,
        "VirtualSize": 186079594,
        "GraphDriver": {
            "Data": null,
            "Name": "aufs"
        },
        "RootFS": {
            "Type": "layers",
            "Layers": [
                "sha256:cd7100a72410606589a54b932cabd804a17f9ae5b42a1882bd56d263e02b6215",
                "sha256:317e0b42ef29551507adc792c2dbc389af85c5d68900cf0f08abe907cbd4e199",
                "sha256:d6fd5302a9ee64c43b46153e9678153819d6d0e247381acbbe6cbe6ed9de0366",
                "sha256:417c6bd0930eb69d17ae5d601898a6a012900ca33c69e612840a3042b2451cbb",
                "sha256:8309a5eed5158c5639acb664312ddc7027a2ecb172744f548d6d9fb5f918a744",
                "sha256:6ef8c795d7a5e2a07f51d572a90b820e089f89adf30798193f4f3f410a261415",
                "sha256:9990447f3d37e3f2dc70718d0ea6602cf7843091d8bbe395f552c9c5dd10551c",
                "sha256:ff7910aaeee962d1d86e00742030378a2758da59d8c8cda3fe44314bbffffd8081"
            ]
        },
        "Metadata": {
            "LastTagTime": "0001-01-01T00:00:00Z"
        }
    }
]

可以看到java -cp指定了/app/libs/、/app/resources/、/app/classes/这三个文件夹

小结

jib默认执行如下操作

COPY libs /app/libs/
COPY resources /app/resources/
COPY classes /app/classes/

也就是将libs拷贝到/app/libs，将resources拷贝到/app/resources，将classes拷贝到/app/classes.

doc

jib

Building Docker Image for a Spring Boot App With Jib

build-containers-faster-with-jib-a-google-image-build-tool-for-java-applications

云服务器 idc机房托管为何打包镜像 docker入门实战 docker技术实战 docker实战例子

文章版权归作者所有，未经允许请勿转载,若此文章存在违规行为，您可以联系管理员删除。

转载请注明本文地址：https://www.ucloud.cn/yun/27417.html

谷歌助力，快速实现 Java 应用容器化

摘要：在年下旬开源了一款新的工具，可以轻松地将应用程序容器化。由于默认访问谷歌的仓库，而国内访问不稳定会经常导致网络超时，所以笔者使用了国内的阿里云镜像服务，那么就不需要访问谷歌的仓库了。执行完成后，我们可以在阿里云镜像仓库获取镜像。原文地址：梁桂钊的博客博客地址：http://blog.720ui.com 欢迎关注公众号：「服务端思维」。一群同频者，一起成长，一起精进，打破认知的局限性。...

Anonymous1 2019-06-28 17:13 评论0 收藏0
谷歌助力，快速实现 Java 应用容器化

摘要：在年下旬开源了一款新的工具，可以轻松地将应用程序容器化。由于默认访问谷歌的仓库，而国内访问不稳定会经常导致网络超时，所以笔者使用了国内的阿里云镜像服务，那么就不需要访问谷歌的仓库了。执行完成后，我们可以在阿里云镜像仓库获取镜像。原文地址：梁桂钊的博客博客地址：http://blog.720ui.com 欢迎关注公众号：「服务端思维」。一群同频者，一起成长，一起精进，打破认知的局限性。...

MudOnTire 2019-08-16 16:40 评论0 收藏0
近几个月Github上最热门的Java项目一览

摘要：今天逛了逛，顺手精选出了一下近几个月以来上最热门的个项目。相关阅读正式开源，帮助应用快速容器化未来可能会上热门的项目地址介绍哈哈，皮一下很开心。这是我自己开源的一份文档，目前仍在完善中，欢迎各位英雄好汉一起完善。 showImg(https://segmentfault.com/img/remote/1460000015766827?w=391&h=220);今天逛了逛Github，顺...

cyqian 2019-08-19 10:48 评论0 收藏0
最小化 Java 镜像的常用技巧

摘要：本文将介绍精简容器镜像的必要性并以基于的应用为例描述最小化容器镜像的常用技巧。经过这一优化，最终镜像的大小为。背景随着容器技术的普及，越来越多的应用被容器化。人们使用容器的频率越来越高，但常常忽略一个基本但又非常重要的问题 - 容器镜像的体积。本文将介绍精简容器镜像的必要性并以基于 spring boot 的 java 应用为例描述最小化容器镜像的常用技巧。精简容器镜像的必要性 ...

MudOnTire 2019-06-21 16:51 评论0 收藏0