docker中容器運(yùn)行時(shí)如何將目錄和宿主機(jī)進(jìn)行掛載

更新時(shí)間：2024年05月06日 11:38:58 作者：東坡的雪堂

對(duì)于一個(gè)已經(jīng)運(yùn)行的容器,如果后續(xù)需要新掛載一個(gè)目錄怎么辦?下面這篇文章主要給大家介紹了關(guān)于docker中容器運(yùn)行時(shí)如何將目錄和宿主機(jī)進(jìn)行掛載的相關(guān)資料,文中通過(guò)代碼介紹的非常詳細(xì),需要的朋友可以參考下

容器已運(yùn)行，但還想掛載文件

容器已經(jīng)運(yùn)行起來(lái)了，突然想給容器的目錄進(jìn)行掛載，通常是在運(yùn)行容器時(shí)加上 -v 命令進(jìn)行掛載。運(yùn)行起來(lái)的容器想掛載文件夾可以通過(guò)修改容器在宿主機(jī)的配置文件進(jìn)行解決。

在配置文件中加入新的掛載

1.查看容器存放目錄

[root@linuxchen ~]# docker info | grep 'Root'
 Docker Root Dir: /var/lib/docker

2.進(jìn)入該目錄

[root@linuxchen ~]# cd /var/lib/docker
[root@linuxchen docker]# ls
buildkit  containers  engine-id  image  network  
overlay2  plugins  runtimes  swarm  tmp  volumes

3.文件夾containers就包含的是各個(gè)容器的配置文件的目錄

[root@linuxchen docker]# cd containers/
[root@linuxchen containers]# ls
01cd5154b4e4b36f3c70774cb22c9f61f6058b90383f423f7c8bb5b7d3e14d3b  9a26f71832905af40316ff2a17d709f22c658de0276677e6bd980f350e3d30a2
0552b78c6b7eec42e1ef26767054bbcc273ce1ce45a669846bc180ef1047aa1c  9d23423647373b08215f3778ebca871baffd3375b6f5b7f23c226dab15a955c3
155d3b8a66bbdf5c7321cd90d9acbbc41d61f2bdce75dc0b86f42fc002bce87b  bb2567b9c2ddf9d9c7b5ad35c3a6fa20ca429e7e074c36db7c3ded50058e178c
3f1e1ca864b88e616e13359b2d919487b05103cc54a6d28280494d68fef0ba6c  bcd680044d1c8602f54f679a759306827b44cf62ded902596899a931f29790cc
6441463ea608447fc484937eceec7e55db1ac65c57c9c7e4e9ab6316d7504c0f  c957b6f352686df7aaa03ae14357dce9c496803e15f660ab204f3d1654c63221
6e2afdb382e6e78ebfae28cd35fca65004822906be8c6befe88d9b8b8417376a  d997473f71241688421081319df0dd6bbca888fc072e3713311c269fe07f6051
900e4b6fa19cff7fb2444fec93e2f041e226e48fdae86fe7095d232936cc5824  f67880be8e92c2262290244f7ed6b889cc3361a49adb0ce26c6f91f8aeab69f9
9301eedc7ea843d39da502e4c1a37e1c88b8401e21893a8b5001f6b9ebccf76c  fecaaaf35867f448b298f05a1f1da3a289533fb6be422edd49e7431f6828e09f
993633e3936dd583cd0bfb64716ac32b6b7a305b037411bb91d20ea5c38046b8  ffb4fa8fbeda9724d72c6d118090ed9b6d8564fa6fbc56bb93e47d6e7cededbf

4.查看你的容器id，容器id就是配置目錄的前綴名，cd進(jìn)該容器的配置文件夾（粘貼上容器id，使用tab補(bǔ)全即可）

[root@linuxchen containers]# docker  ps
CONTAINER ID   IMAGE     COMMAND                  CREATED      STATUS          PORTS                               NAMES
9a26f7183290   nginx     "/docker-entrypoint.…"   2 days ago   Up 35 minutes   0.0.0.0:80->80/tcp, :::80->80/tcp   nginx
[root@linuxchen containers]# cd 9a26f71832905af40316ff2a17d709f22c658de0276677e6bd980f350e3d30a2/
[root@linuxchen 9a26f71832905af40316ff2a17d709f22c658de0276677e6bd980f350e3d30a2]# ll
total 404
-rw-r----- 1 root root 376531 Nov 19 16:02 9a26f71832905af40316ff2a17d709f22c658de0276677e6bd980f350e3d30a2-json.log
drwx------ 2 root root   4096 Nov 17 13:05 checkpoints
-rw------- 1 root root   3519 Nov 19 15:33 config.v2.json
-rw------- 1 root root   1585 Nov 19 15:33 hostconfig.json
-rw-r--r-- 1 root root     13 Nov 19 15:33 hostname
-rw-r--r-- 1 root root    174 Nov 19 15:33 hosts
drwx--x--- 2 root root   4096 Nov 17 13:05 mounts
-rw-r--r-- 1 root root    149 Nov 19 15:33 resolv.conf
-rw-r--r-- 1 root root     71 Nov 19 15:33 resolv.conf.hash

5.配置config.v2.json和hostconfig.json

掛載需求：1.將宿主機(jī)的文件夾 /root/music 和容器中的文件夾 /usr/share/nginx/html/music進(jìn)行掛載
2.將宿主機(jī)的文件夾/root/images 和容器中的文件夾 /usr/share/nginx/html/images進(jìn)行掛載

5.0 ?。?！修改配置文件前一定要關(guān)掉容器并且停掉docker服務(wù)，否則配置過(guò)的內(nèi)容會(huì)被沖刷掉

在關(guān)閉docker時(shí)，假如跟我一樣出現(xiàn)了docker.socket并未關(guān)閉，一定要使用命令systemctl stop docker.socket 將其關(guān)閉再去關(guān)閉docker

[root@linuxchen 9a26f71832905af40316ff2a17d709f22c658de0276677e6bd980f350e3d30a2]# docker stop 9a26f7183290
9a26f7183290
[root@linuxchen 9a26f71832905af40316ff2a17d709f22c658de0276677e6bd980f350e3d30a2]# systemctl stop docker
Warning: Stopping docker.service, but it can still be activated by:
  docker.socket
[root@linuxchen 9a26f71832905af40316ff2a17d709f22c658de0276677e6bd980f350e3d30a2]# systemctl stop docker.socket
[root@linuxchen 9a26f71832905af40316ff2a17d709f22c658de0276677e6bd980f350e3d30a2]# systemctl stop docker

注：要修改的兩個(gè)配置文件都是json文件，如果使用vi或者vim打開后的文件內(nèi)容不是格式化的JSON格式，可在vim中使用命令:%!python3 -m json.tool 來(lái)格式化文件內(nèi)容，以方便查看和修改。

5.1 配置config.v2.json

在config.v2.json文件中找到MountPoints，配置如下，只需更改為你的目錄即可。要注意逗號(hào)的問(wèn)題，符合json格式。

    "MountPoints": {
        "/usr/share/nginx/html/images": {
            "Source": "/root/images",
            "Destination": "/usr/share/nginx/html/images",
            "RW": true,
            "Name": "",
            "Driver": "",
            "Type": "bind",
            "Propagation": "rprivate",
            "Spec": {
                "Type": "bind",
                "Source": "/root/images",
                "Target": "/usr/share/nginx/html/images"
            },
            "SkipMountpointCreation": false
        },
        "/usr/share/nginx/html/music": {
            "Source": "/root/music",
            "Destination": "/usr/share/nginx/html/music",
            "RW": true,
            "Name": "",
            "Driver": "",
            "Type": "bind",
            "Propagation": "rprivate",
            "Spec": {
                "Type": "bind",
                "Source": "/root/music",
                "Target": "/usr/share/nginx/html/music"
            },
            "SkipMountpointCreation": false
        }
    },

5.2 配置hostconfig.json

 "Binds": [
        "/root/music:/usr/share/nginx/html/music",
        "/root/images:/usr/share/nginx/html/images"
    ],

6.重啟docker 重啟容器

[root@linuxchen 9a26f71832905af40316ff2a17d709f22c658de0276677e6bd980f350e3d30a2]# systemctl start docker
[root@linuxchen 9a26f71832905af40316ff2a17d709f22c658de0276677e6bd980f350e3d30a2]# docker start 9a26f7183290
9a26f7183290

7.查看文件掛載情況

宿主機(jī)

[root@linuxchen music]# ls
jay2.mp3  jay.mp3  withoutyou.mp3  wozaideng-suxingjie.mp3  zood.mp3

容器

root@9a26f7183290:/usr/share/nginx/html/music# ls
jay.mp3  jay2.mp3  withoutyou.mp3  wozaideng-suxingjie.mp3  zood.mp3

總結(jié)

到此這篇關(guān)于docker中容器運(yùn)行時(shí)如何將目錄和宿主機(jī)進(jìn)行掛載的文章就介紹到這了,更多相關(guān)docker容器掛載目錄和宿主機(jī)內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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