docker默认路径存储不足解决过程

[root@localhost ~]# fdisk -l

磁盘 /dev/sda：42.9 GB, 42949672960 字节，83886080 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：dos
磁盘标识符：0x00095d44

   设备 Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048     2099199     1048576   83  Linux
/dev/sda2         2099200    83886079    40893440   8e  Linux LVM

磁盘 /dev/sdb：107.4 GB, 107374182400 字节，209715200 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节


磁盘 /dev/mapper/centos-root：39.7 GB, 39720058880 字节，77578240 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节


磁盘 /dev/mapper/centos-swap：2147 MB, 2147483648 字节，4194304 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节

[root@localhost ~]# fdisk /dev/sdb 
欢迎使用 fdisk (util-linux 2.23.2)。

更改将停留在内存中，直到您决定将更改写入磁盘。
使用写入命令前请三思。

Device does not contain a recognized partition table
使用磁盘标识符 0xcaf2ac7e 创建新的 DOS 磁盘标签。

命令(输入 m 获取帮助)：g
Building a new GPT disklabel (GUID: 60063BE6-D393-4582-AEEB-C98087007C13)


命令(输入 m 获取帮助)：n
分区号 (1-128，默认 1)：
第一个扇区 (2048-209715166，默认 2048)：
Last sector, +sectors or +size{K,M,G,T,P} (2048-209715166，默认 209715166)：
已创建分区 1


命令(输入 m 获取帮助)：w
The partition table has been altered!

Calling ioctl() to re-read partition table.
正在同步磁盘。


#格式化磁盘
[root@localhost ~]# mkfs -t xfs /dev/sdb1 
meta-data=/dev/sdb1              isize=512    agcount=4, agsize=6553535 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0, sparse=0
data     =                       bsize=4096   blocks=26214139, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal log           bsize=4096   blocks=12799, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
[root@localhost ~]# mount -t xfs /dev/sdb1 /data

[root@localhost ~]# cat  /etc/fstab 

#
# /etc/fstab
# Created by anaconda on Tue Nov 22 19:08:23 2022
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/centos-root /                       xfs     defaults        0 0
UUID=6638d2be-bc05-4ab2-bc32-d1ae3234d408 /boot                   xfs     defaults        0 0
/dev/mapper/centos-swap swap                    swap    defaults        0 0
UUID=adc0d342-853c-4f5a-b5ff-d8dc65ec9705 /data xfs     defaults        0 0

[root@localhost ~]# df -h
文件系统                 容量  已用  可用 已用% 挂载点
devtmpfs                 898M     0  898M    0% /dev
tmpfs                    910M     0  910M    0% /dev/shm
tmpfs                    910M  9.5M  901M    2% /run
tmpfs                    910M     0  910M    0% /sys/fs/cgroup
/dev/mapper/centos-root   37G   32G  5.4G   86% /
/dev/sda1               1014M  151M  864M   15% /boot
tmpfs                    182M     0  182M    0% /run/user/0
/dev/sdb1                100G   33M  100G    1% /data

[root@localhost ~]# systemctl stop  docker
Warning: Stopping docker.service, but it can still be activated by:
  docker.socket
[root@localhost ~]# systemctl stop  docker.socket
[root@localhost ~]# 
[root@localhost ~]# mkdir /data/docker

同步docker镜像数据
nohup rsync -avz /var/lib/docker/ /data/docker/  & 
cp -r   /var/lib/docker/ /data/docker/ 

编辑/etc/docker/daemon.json，添加参数，将docker的目录迁移绑定

"data-root ": "/data/docker"

[root@localhost ~]# systemctl restart docker

[root@localhost ~]# docker info
Client:
 Context:    default
 Debug Mode: false
 Plugins:
  app: Docker App (Docker Inc., v0.9.1-beta3)
  buildx: Build with BuildKit (Docker Inc., v0.6.3-docker)
  scan: Docker Scan (Docker Inc., v0.23.0)

Server:
 Containers: 0
  Running: 0
  Paused: 0
  Stopped: 0
 Images: 265
 Server Version: 20.10.9
 Storage Driver: overlay2
  Backing Filesystem: xfs
  Supports d_type: true
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 1
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: runc io.containerd.runc.v2 io.containerd.runtime.v1.linux
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: ae07eda36dd25f8a1b98dfbf587313b99c0190bb
 runc version: v1.1.12-0-g51d5e94
 init version: de40ad0
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 3.10.0-1160.el7.x86_64
 Operating System: CentOS Linux 7 (Core)
 OSType: linux
 Architecture: x86_64
 CPUs: 2
 Total Memory: 1.777GiB
 Name: localhost.localdomain
 ID: V2R4:D3LK:M35M:NUSH:PCXP:XSBF:O5RF:YSHX:ZOMV:RC4G:3DFJ:6J3Q
 Docker Root Dir: /data/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  192.168.12.97
  39.156.86.16:50000
  harbor.inspur.local
  nexus.inspur.local
  registry.cn-beijing.aliyuncs.com
  registry.cn-hangzhou.aliyuncs.com
  10.110.63.67
  127.0.0.0/8
 Registry Mirrors:
  https://38ov96r5.mirror.aliyuncs.com/
 Live Restore Enabled: false