技術標籤：虛擬機器相應內容

docker基礎2–映象、容器等基本操作：
1.查詢映象基礎方法[高階方法，見cocker基礎1]

docker search centos

[[email protected] ~]# docker search centos
NAME                               DESCRIPTION                                     STARS               OFFICIAL            AUTOMATED
centos                             The official build of CentOS.                   6370                [
 
OK]
ansible/centos7-ansible            Ansible on Centos7                              132                                     [OK]
consol/centos-xfce-vnc             Centos container with "headless" VNC session…   125                                     [OK]
jdeathe/centos-ssh                 OpenSSH / Supervisor / EPEL/IUS/SCL Repos - …   117                                     [
 
OK]
centos/systemd                     systemd enabled base container.                 93                                      [OK]
centos/mysql-57-centos7            MySQL 5.7 SQL database server                   87
imagine10255/centos6-lnmp-php56    centos6-lnmp-php56                              58                                      [
 
OK]
tutum/centos                       Simple CentOS docker image with SSH access      46
centos/postgresql-96-centos7       PostgreSQL is an advanced Object-Relational …   45
kinogmt/centos-ssh                 CentOS with SSH                                 29                                      [OK]
pivotaldata/centos-gpdb-dev        CentOS image for GPDB development. Tag names…   13
guyton/centos6                     From official centos6 container with full up…   10                                      [OK]

這裡面的“OFFICIAL”是代表 官方釋出的版本。“STARS”星星–個人理解就是熱門版本，我們下載就是參照這兩個引數就是可以了

2.查詢系統中下載了哪些映象

docker images

3.刪除映象的辦法

docker rmi 映象id

4.匯出映象
示例：以“busybox”為例進行測試

[[email protected] ~]# docker save -o busy1.tar busybox:latest
[[email protected] ~]#

[[email protected] ~]# ls
1.txt    busy1.tar    install.sh  psutil-5.2.2.tar.gz

或者這樣匯出也可以

[[email protected] ~]# docker save > busy2.tar busybox:latest
[[email protected] ~]# ls
1.txt  anaconda-ks.cfg  busy1.tar  busy2.tar  
[[email protected] ~]#

5.匯入映象
5.1先刪除使用映象的容器

[[email protected] ~]# docker ps -a
CONTAINER ID        IMAGE                 COMMAND                  CREATED             STATUS                    PORTS                    NAMES
1811ea42d922        busybox:latest        "/bin/sh"                2 days ago          Exited (137) 2 days ago                            vibrant_vaughan
156f134c5468        nginx                 "nginx -g 'daemon 
[[email protected] ~]# docker rm 1811
1811

5.2在刪除映象

[[email protected] ~]# docker images
REPOSITORY            TAG                 IMAGE ID            CREATED             SIZE
busybox               latest              b97242f89c8a        8 days ago          1.23MB

刪除映象busybox的id“b97242f89c8a”可以簡寫
[[email protected] ~]# docker rmi b97
Untagged: busybox:latest
Untagged: [email protected]:c5439d7db88ab5423999530349d327b04279ad3161d7596d2126dfb5b02bfd1f
Deleted: sha256:b97242f89c8a29d13aea12843a08441a4bbfc33528f55b60366c1d8f6923d0d4
Deleted: sha256:0064d0478d0060343cb2888ff3e91e718f0bffe9994162e8a4b310adb2a5ff74
[[email protected] ~]#

5.3匯出映象
進入映象所在的目錄，然後執行匯入命令

[[email protected] ~]# ls
1.txt  anaconda-ks.cfg  busy1.tar  busy2.tar  initial-setup-ks.cfg  install.sh  psutil-5.2.2.tar.gz
[[email protected] ~]# docker load -i busy1.tar
0064d0478d00: Loading layer [==================================================>]   1.45MB/1.45MB
Loaded image: busybox:latest
[[email protected] ~]#

在查詢下就是可以看到映象已經匯入進去了
[[email protected] ~]# docker images
REPOSITORY            TAG                 IMAGE ID            CREATED             SIZE
busybox               latest              b97242f89c8a        8 days ago          1.23MB