日常运维之持续集成docker测试环境

最新推荐文章于 2025-04-10 22:30:00 发布

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最新推荐文章于 2025-04-10 22:30:00 发布

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分类专栏： Docker 文章标签： docker

本文链接：https://blog.youkuaiyun.com/qq_26707177/article/details/89841610

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本文介绍了日常运维中的Docker持续集成实践，包括查看容器列表、命名容器、启动停止容器、附着运行容器、列出镜像以及创建测试Docker镜像。重点讲述了如何创建一个定制容器，并利用本地系统制作的镜像新建测试容器，最后说明了如何通过Xshell登录并操作容器。

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运行第一个容器

[root@localhost ~]# docker run -i -t centos /bin/bash
Unable to find image 'centos:latest' locally
latest: Pulling from library/centos
8ba884070f61: Pull complete 
Digest: sha256:8d487d68857f5bc9595793279b33d082b03713341ddec91054382641d14db861
Status: Downloaded newer image for centos:latest
[root@dd77efe3aa68 /]#

查看当前系统中容器的列表

[root@localhost ~]# docker ps -a #查看当前中容器的列表
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                          PORTS               NAMES
dd77efe3aa68        centos              "/bin/bash"              2 minutes ago       Exited (0) About a minute ago                       determined_lehmann
88b7cea2ef07        nginx               "/bin/bash"              2 weeks ago         Exited (130) 2 weeks ago                            objective_gagarin
780086dba00d        httpd               "httpd-foreground"       2 weeks ago         Exited (0) 2 weeks ago                              zen_fermi
7500dd5b88c9        nginx               "nginx -s reload"        2 weeks ago         Exited (1) 2 weeks ago                              nostalgic_keller
31a038906506        nginx               "nginx -g 'daemon of…"   2 weeks ago         Exited (0) 2 weeks ago                              flamboyant_lamarr
44316cfd52e9        ubuntu:15.10        "/bin/sh -c 'while t…"   2 weeks ago         Exited (137) 2 weeks ago                            adoring_chatterjee
5da8d136bf33        ubuntu:15.10        "bin/sh 'while true;…"   2 weeks ago         Exited (127) 2 weeks ago                            compassionate_shirley
86347adc606e        ubuntu:15.10        "bin/sh 'while true;…"   2 weeks ago         Exited (127) 2 weeks ago                            infallible_dhawan
9835c743b019        ubuntu:15.10        "/bin/bash"              2 weeks ago         Exited (0) 2 weeks ago                              gracious_wescoff
4345d801c414        ubuntu:15.10        "/bin/echo hello"        2 weeks ago         Exited (0) 2 weeks ago                              modest_meitner
387c0af7b665        ubuntu:15.10        "/bin/echo hello"        2 weeks ago         Exited (0) 2 weeks ago                              stupefied_archimedes
b7b7d8f0a788        nginx               "nginx -g 'daemon of…"   2 weeks ago         Exited (137) 11 days ago                            rik_nginx

[root@localhost ~]# docker ps #当前正在运行的容器
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES

给容器命名

[root@localhost ~]# docker run --name fleming_test -i -t centos /bin/bash
[root@569134b8fedd /]#

启动停止的容器

[root@localhost ~]# docker start fleming_test #启动停止的容器
fleming_test

附着到正在运行的容器

[root@localhost ~]# docker attach fleming_test
[root@569134b8fedd /]#

列出镜像

[root@localhost ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
<none>              <none>              8dce45f00be0        2 weeks ago         88.9MB
nginx               latest              bb776ce48575        3 weeks ago         109MB
httpd               latest              d4a07e6ce470        4 weeks ago         132MB
centos              latest              9f38484d220f        7 weeks ago         202MB
ubuntu              latest              94e814e2efa8        7 weeks ago         88.9MB
hello-world         latest              fce289e99eb9        4 months ago        1.84kB
ubuntu              15.10               9b9cb95443b5        2 years ago         137MB
training/webapp     latest              6fae60ef3446        3 years ago         349MB

创建测试docker镜像

创建一个要修改的定制容器

[root@localhost docker]# docker run -i -t centos /bin/bash #创建一个容器
[root@localhost docker]# docker ps -l -q #得到刚创建容器的id
e3b2a7c3b01f

用本地系统做成的镜像新建测试容器

[root@localhost ~]# docker run -d -p 231:22 --name jason centos7 /usr/sbin/sshd -D　//启动容器,并绑定容器端口22到宿主主机, 可以有多个-p 绑定多个端口,例如22端口让远程客户端连接,8080 可以访问容器内tomcat

[root@localhost ~]# ssh root@192.168.0.252 -p 220
The authenticity of host '[192.168.0.252]:220 ([192.168.0.252]:220)' can't be established.
ECDSA key fingerprint is SHA256:8lY/a8uaXKoaGTVyun4LSXzClraZ5AiodB1kKarSNIE.
ECDSA key fingerprint is MD5:74:fa:33:b5:06:e9:0c:c1:dd:80:84:1b:2e:38:33:6b.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '[192.168.0.252]:220' (ECDSA) to the list of known hosts.
root@192.168.0.252's password: 
Last login: Mon May  6 10:45:39 2019
[root@faff97aef1d1 ~]# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.17.0.3  netmask 255.255.0.0  broadcast 172.17.255.255

通过xshell登录到自己的容器即可。在容器中操作和在centos7中操作是一样的。Xshell登录容器方式如下