Docker 儲存

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Data Volume

# DockerFile => VOLUME
# 會將/app 動態映射到外部資料夾
VOLUME ["/app"]

相關指令

# 列出所有volume
[tomcat@docker]$ docker volume ls
DRIVER              VOLUME NAME
local               2db2d2b1a6ceb9f578d2149dc44625e1996dcc33de0639f8644ce2082182b9a8


# 查詢某volume細節
[tomcat@docke]$ docker volume inspect 2db2d2b1a6ceb9f578d2149dc44625e1996dcc33de0639f8644ce2082182b9a8
[
    {
        "CreatedAt": "2019-06-04T15:40:43+08:00",
        "Driver": "local",
        "Labels": null,
        "Mountpoint": "/var/lib/docker/volumes/2db2d2b1a6ceb9f578d2149dc44625e1996dcc33de0639f8644ce2082182b9a8/_data",
        "Name": "2db2d2b1a6ceb9f578d2149dc44625e1996dcc33de0639f8644ce2082182b9a8",
        "Options": null,
        "Scope": "local"
    }
]

# 刪除所有不使用的volume
[tomcat@docker]$ docker volume prune
WARNING! This will remove all local volumes not used by at least one container.
Are you sure you want to continue? [y/N] y
Deleted Volumes:
2db2d2b1a6ceb9f578d2149dc44625e1996dcc33de0639f8644ce2082182b9a8
44d6286d1a793ac8c788b0fd364fa8d9430ce3ec079731dbe894dd996cae9adb
925559f4c2399c0c989d8602ca77fb3243dfb83022fe029b09b130c9521e7f89
9484acbd73c53af47f29add893c5125b0cd7f0f96e521c54e643f1aeb8f97eeb
b47202da45060de8f67e48058966b32078d525cadd1c94671a0ffe33f3d5df4b
006d620ae77bf7530ea37abd48b9c20ac264956f4b9ef3397e2c5072f32677c2
15e0fd2e575c2c24a2a137ff420dbf30326f3859d483561efc45e568d294c802
98b5385b04a401e9e870c5a1e807d69c56a1764b2ec91baedd9c13994cb2c863
ffdae0e84d00966afdc0df55d664d06ee99c14d249ad7558848088c464d472ff

Total reclaimed space: 77.8MB

# 指定volume mount 至 /var/www/html
[tomcat@docker]$ docker run -d -v html_doc:/var/www/html httpd

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Bind Mount

# 直接mount 外部資料夾 至 /var/www/html
# 相對路徑
[tomcat@docker-qc html-doc]$ docker run -d -v ${PWD}/html-doc:/var/www/html httpd
# 絕對路徑
[tomcat@docker-qc html-doc]$ docker run -d -v /home/tomcat/docker/html-doc:/var/www/html httpd

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官方参考链接 https://docs.docker.com/storage/volumes/#share-data-among-machines

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常用volume mapping (log)

# nginx
docker run -p 80:80 -itd -v /tmp/log/nginx/docker-nginx-log:/var/log/nginx nginx