Docker安装CentOS遇到的问题

来源：互联网发布：mac地址软件下载编辑：程序博客网时间：2024/05/22 00:53

刚接触docker这里记录下安装CentOS时遇到的坑, 首先docker pull learn测试试了echo hello world正常, 然后想pull个CentOS测试下, 解决就报了下面这条错误

[root@beta-enze ~]# docker pull centosUsing default tag: latestTrying to pull repository docker.io/library/centos ... Repository docker.io/library/centos already being pulled by another client. Waiting.

首先我尝试了rmi关闭image

docker rmi ed9c93747fe1

报错提示无法删除
这是因为由于image被某个container引用（拿来运行），如果不将这个引用的container销毁（删除），那image肯定是不能被删除, 所以想要删除运行过的images必须首先删除它的container。
查看所有container

docker ps -a

[root@beta-enze ~]# docker ps -aCONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                    PORTS               NAMES183c7f52ac5d        learn/ping          "apt-get install -y p"   17 hours ago        Exited (0) 17 hours ago                       prickly_visvesvarayab7f91251b6bc        learn/ping          "ping www.baidu.com"     17 hours ago        Exited (0) 17 hours ago                       prickly_ramanf7750030e2ba        learn/tutorial      "apt-get install -y p"   17 hours ago        Exited (0) 17 hours ago                       modest_lovelace525f101d4436        learn/tutorial      "ping www.baidu.com"     17 hours ago        Created                                       stupefied_wilson710c8678fc9b        learn/tutorial      "echo jfjkalkfl"         17 hours ago        Exited (0) 17 hours ago                       naughty_lumiereacff090861c1        hello-world         "/hello"                 18 hours ago        Exited (0) 18 hours ago                       lonely_bell4e1ea738a0e2        hello-world         "/hello"                 18 hours ago        Exited (0) 18 hours ago                       gloomy_goldstine

这里可以查看所有已关闭和未关闭的container,删除它:

[root@beta-enze ~]# docker rm 183c7f52ac5d183c7f52ac5d

然后就可以rmi所有image了, 可是关完之后发现有一个无法关闭

[root@beta-enze ~]# docker imagesREPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE<none>              <none>              168a69b62202        5 weeks ago         172.3 MB

尝试和很多种方法都没法删除,暂时不管他了
重启docker

[root@beta-enze ~]# service docker restart

[root@beta-enze ~]# docker pull centosUsing default tag: latestTrying to pull repository docker.io/library/centos ... latest: Pulling from library/centos812e9d9d677f: Pull complete4234bfdd88f8: Pull completece20c473cd8a: Pull complete47d44cb6f252: Already exists168a69b62202: Already existsDigest: sha256:c96eeb93f2590858b9e1396e808d817fa0ba4076c68b59395445cb957b524408Status: Downloaded newer image for docker.io/centos:latest

发现成功了!
这是查看image

[root@beta-enze ~]# docker imagesREPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZEdocker.io/centos    latest              ce20c473cd8a        5 weeks ago         172.3 MB

发现之前那个空的tag的image没了取而代之的是新的CentOS, echo “hello world”成功所以猜测之前无法删除的那个空的image应该是之前尝试pull CentOS成功下载的部分 service docker restart后成功下载后半部分然后这个image镜像就完整了.

嗯, 最后理下思路, 前面尝试rm/rmi删除container和image的思路是错的, service docker restart就OK, 可能有偏见或者错误的地方, 欢迎大家指出,我也会在理解更透彻之后更新这篇文章.

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