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Docker-volume创建数据卷

 创建一个名为myvol的数据卷:

[root@localhost ~]# docker volume create myvol
myvol

[root@localhost ~]# docker volume ls
DRIVER              VOLUME NAME
local               myvol

查看数据卷:
[root@localhost ~]# docker volume inspect myvol
[
    {
        "Driver": "local",
        "Labels": {},
        "Mountpoint": "/var/lib/docker/volumes/myvol/_data",
        "Name": "myvol",
        "Options": {},
        "Scope": "local"
    }
]
[root@localhost ~]# 

启动一个Nginx容器并挂载数据卷:

[root@localhost ~]# docker run -d -p 8080:80 --name web -v myvol:/usr/share/nginx/html nginx:1.19.0
9a4f1ddca147077cb3799cf094027413981fd44be9ec0342b4180452b0dcb107
[root@localhost ~]# ls /var/lib/docker/volumes/myvol/_data
50x.html  index.html
[root@localhost ~]# 
[root@localhost ~]# curl http://localhost:8080
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
    body {
        width: 35em;
        margin: 0 auto;
        font-family: Tahoma, Verdana, Arial, sans-serif;
    }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>

<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>

<p><em>Thank you for using nginx.</em></p>
</body>
</html>
[root@localhost ~]# 

修改默认页面,测试访问:

[root@localhost ~]# echo "test-volume" > //var/lib/docker/volumes/myvol/_data/index.html
[root@localhost ~]# curl http://localhost:8080
test-volume
[root@localhost ~]# 

测试删除web容器,查看数据卷数据是否存在:

[root@localhost ~]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                  NAMES
9a4f1ddca147        nginx:1.19.0        "/docker-entrypoin..."   3 minutes ago       Up 3 minutes        0.0.0.0:8080->80/tcp   web
[root@localhost ~]# docker rm -f web
web

[root@localhost ~]# docker volume ls
DRIVER              VOLUME NAME
local               myvol
[root@localhost ~]# cat /var/lib/docker/volumes/myvol/_data/index.html 
test-volume
[root@localhost ~]# 

原文地址:https://blog.csdn.net/qq_37272999/article/details/137968446

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