參考https://www.cnblogs.com/CloudMan6/p/7188479.html volume?container?是專門為其他容器提供?volume?的容器，他提供的卷也可以是bind?mount ，也可以是docker?managed?volume 創建容器vc_data，因為它只負責提供數據，無需運行，docker?create即可。 容器mount了兩個volume，bind?mount用來存放webserver的靜態文件，docker?managed?volume用來存放一些實用工具 [root@docker-lab ~]# cat ~/htdocs/index.html This a test HTML file [root@docker-lab ~]# docker create --name vc_data -v ~/htdocs:/usr/local/apache2/htdocs -v /other/useful/tools busybox 6c12ead74cd754c2da6e0e801b798a93d38965d84fc2eea9c120bcf627e99560 [root@docker-lab ~]# docker inspect vc_data ? "Mounts": [ { "Type": "bind", "Source": "/root/htdocs", "Destination": "/usr/local/apache2/htdocs", "Mode": "", "RW": true, "Propagation": "rprivate" }, { "Type": "volume", "Name": "14ae5efb5762a333bcceb26503ca974122d67cf31ed68da1b22773065b6fa696", "Source": "/var/lib/docker/volumes/14ae5efb5762a333bcceb26503ca974122d67cf31ed68da1b22773065b6fa696/_data", "Destination": "/other/useful/tools", "Driver": "local", "Mode": "", "RW": true, "Propagation": "" } ] 其他容器可以使用 --volumes-from?使用vc_data?這個volume container [root@docker-lab ~]# docker run --name web01 -d -p 80 --volumes-from vc_data httpd 90feafa492fe582ba97072e660a5661587b14bd40de60d6b78d14a3127294328 [root@docker-lab ~]# docker run --name web02 -d -p 80 --volumes-from vc_data httpd a04615d5f438bc609ce35e04c2a3d76bb6df78e627d4136cf56e83b18d794517 [root@docker-lab ~]# docker run --name web03 -d -p 80 --volumes-from vc_data httpd 88613c4f0e6cd112a359bf68dfe515e7469883ea76f2df85f37c022f84e5fd63 [root@docker-lab ~]# docker ps CONTAINER ID????????IMAGE???????????????COMMAND??????????????CREATED?????????????STATUS??????????????PORTS???????????????????NAMES 88613c4f0e6c????????httpd???????????????"httpd-foreground"???3 seconds ago???????Up 2 seconds????????0.0.0.0:32770->80/tcp???web03 a04615d5f438????????httpd???????????????"httpd-foreground"???8 seconds ago???????Up 7 seconds????????0.0.0.0:32769->80/tcp???web02 90feafa492fe????????httpd???????????????"httpd-foreground"???13 seconds ago??????Up 12 seconds???????0.0.0.0:32768->80/tcp???web01 [root@docker-lab ~]# docker inspect web01 -f '{{.NetworkSettings.IPAddress}}' 172.17.0.2 [root@docker-lab ~]# docker inspect web02 -f '{{.NetworkSettings.IPAddress}}' 172.17.0.3 [root@docker-lab ~]# docker inspect web03 -f '{{.NetworkSettings.IPAddress}}' 172.17.0.4 [root@docker-lab ~]# curl http://127.0.0.1:32768 This a test HTML file [root@docker-lab ~]# curl http://127.0.0.1:32769 This a test HTML file [root@docker-lab ~]# curl http://127.0.0.1:32770 This a test HTML file [root@docker-lab ~]# docker inspect vc_data -f '{{.Mounts}}' [ {bind??/root/htdocs /usr/local/apache2/htdocs???true rprivate}? {volume 14ae5efb5762a333bcceb26503ca974122d67cf31ed68da1b22773065b6fa696 /var/lib/docker/volumes/14ae5efb5762a333bcceb26503ca974122d67cf31ed68da1b22773065b6fa696/_data /other/useful/tools local??true } ] [root@docker-lab ~]# docker inspect web01 -f '{{.Mounts}}' [ {bind??/root/htdocs /usr/local/apache2/htdocs???true rprivate}? {volume 14ae5efb5762a333bcceb26503ca974122d67cf31ed68da1b22773065b6fa696 /var/lib/docker/volumes/14ae5efb5762a333bcceb26503ca974122d67cf31ed68da1b22773065b6fa696/_data /other/useful/tools local??true } ] [root@docker-lab ~]# docker inspect web02 -f '{{.Mounts}}' [ {bind??/root/htdocs /usr/local/apache2/htdocs???true rprivate}? {volume 14ae5efb5762a333bcceb26503ca974122d67cf31ed68da1b22773065b6fa696 /var/lib/docker/volumes/14ae5efb5762a333bcceb26503ca974122d67cf31ed68da1b22773065b6fa696/_data /other/useful/tools local??true } ] [root@docker-lab ~]# docker inspect web03 -f '{{.Mounts}}' [ {bind??/root/htdocs /usr/local/apache2/htdocs???true rprivate}? {volume 14ae5efb5762a333bcceb26503ca974122d67cf31ed68da1b22773065b6fa696 /var/lib/docker/volumes/14ae5efb5762a333bcceb26503ca974122d67cf31ed68da1b22773065b6fa696/_data /other/useful/tools local??true } ] 上面可以看到三個web容器都成功的共享了?volume?container?中的volume。 volume?container?特點： 1、與bind?mount?相比，不必為每一個容器指定host?path，所有path都在volume?container的容器中定義，容器只需要與volume?container關聯，實現了容器與host的解耦 2、使用volume?container?的容器其mount?point是一致的，有利于配置和的規范和標準化，也帶來一定的局限性，使用時需要綜合考慮

轉載于:https://www.cnblogs.com/www1707/p/10474697.html

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