ubuntu安装docker 修改默认存储路径

Posted 2023-04-09

参考技术A ubuntu安装docker 修改默认存储路径

Ubuntu18.04.5:

1.验证
$ sudo docker -v

2.修改docker.service配置文件，使用--graph 参数指定新的目录
MAINPID

3.重新加载配置文件
$ sudo systemctl daemon-reload

4.启动docker,查看docker状态
sudo systemctl enable docker
$ sudo systemctl status docker

5.查看默认路径是否修改成功
$ sudo docker info
...
Kernel Version: 5.4.0-42-generic
Operating System: Ubuntu 18.04.5 LTS
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 1.914GiB
Name: lmmx-virtual-machine
ID: Y7A6:E2RI:45GA:7ZLX:XDV7:2UL7:UFX4:E5SK:3VY6:2FGC:GMYS:CKE2
Docker Root Dir: /opt/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false

docker修改默认存储路径

目录

• docker修改默认存储路径
  • 修改路径

docker修改默认存储路径

服务器环境：Linux app-test 3.10.0-693.11.6.el7.x86_64 #1 SMP Thu Jan 4 01:06:37 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

安装命令：$ yum install -y docker

安装docker后镜像存储默认地址：/var/lib/docker，这样会让/挂载点空间占用越来越大，同时我们也需要将文件放在我们自己定义的位置，并且空间足够大。

修改路径

• 停止 Docker 服务

$ service docker stop

• 将原来默认的/var/lib/docker备份一下，然后复制到别的位置并建立一个软链接

$ cd /var/lib
$ cp -rf docker docker.bak
$ mv -f docker /<my_new_location>/
$ ln -s /<my_new_location>/docker docker

• 启动 Docker 服务

$ service docker start

• 最后使用 docker info 查看更新结果

[root@app-test ~]# docker info
Containers: 0
 Running: 0
 Paused: 0
 Stopped: 0
Images: 0
Server Version: 1.12.6
Storage Driver: devicemapper
 Pool Name: docker-8:6-40586-pool
 Pool Blocksize: 65.54 kB
 Base Device Size: 10.74 GB
 Backing Filesystem: xfs
 Data file: /dev/loop0
 Metadata file: /dev/loop1
 Data Space Used: 11.8 MB
 Data Space Total: 107.4 GB
 Data Space Available: 107.4 GB
 Metadata Space Used: 581.6 kB
 Metadata Space Total: 2.147 GB
 Metadata Space Available: 2.147 GB
 Thin Pool Minimum Free Space: 10.74 GB
 Udev Sync Supported: true
 Deferred Removal Enabled: true
 Deferred Deletion Enabled: true
 Deferred Deleted Device Count: 0
 Data loop file: /app/docker/docker/devicemapper/devicemapper/data
 WARNING: Usage of loopback devices is strongly discouraged for production use.                                                               Use `--storage-opt dm.thinpooldev` to specify a custom block storage device.
 Metadata loop file: /app/docker/docker/devicemapper/devicemapper/metadata
 Library Version: 1.02.140-RHEL7 (2017-05-03)
Logging Driver: journald
Cgroup Driver: systemd
Plugins:
 Volume: local
 Network: host null bridge overlay
Swarm: inactive
Runtimes: docker-runc runc
Default Runtime: docker-runc
Security Options: seccomp selinux
Kernel Version: 3.10.0-693.11.6.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
Number of Docker Hooks: 3
CPUs: 12
Total Memory: 15.47 GiB
Name: app-test
ID: W67H:APQX:PC6P:45BF:KASR:422V:5I4K:SZFD:AXR6:U4RF:FYKA:OEQ7
Docker Root Dir: /app/docker/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Insecure Registries:
 127.0.0.0/8
Registries: docker.io (secure)