Solutions to the missing docker image: 1. Add hard disk space to root; 2. Divide space from home to root; 3. Back up data; 4. Unmount; 5. Create 1.8t "lv home"; 6. Mount and restore the data.
The operating environment of this article: centOS6.8 system, Docker version 18.09.x, Dell G3 computer.
What should I do if the docker image disappears?
Docker images mirror disappears solution
50,93 there is a situation where the mirror disappears
[root@h50 /]# df -h 文件系统 容量 已用 可用 已用% 挂载点 devtmpfs 24G 0 24G 0% /dev tmpfs 24G 0 24G 0% /dev/shm tmpfs 24G 428M 24G 2% /run tmpfs 24G 0 24G 0% /sys/fs/cgroup /dev/mapper/cl-root 50G 43G 8.0G 85% /
The remaining 85% of root
overlay 50G 43G 8.0G 85% /var/lib/docker/overlay2/9e1d9bbd368c8ebafde39dcaaa66afecde95bfab7db51b13fe92aa5c7995cc9e/merged
The mirror uses the space under root
cat /var/lib/kubelet/config.yaml evictionHard: imagefs.available: 15% memory.available: 100Mi nodefs.available: 10% nodefs.inodesFree: 5%
If less than 15% of imagesfs is evicted, eviction will occur.
It should be followed by This is related
Try to add hard disk space for root, divide the space from home to root
Add 7 t space on 93
Add space for root on lv
resize2fs /dev/mapper/centos-root 发生错误 xfs_growfs /dev/mapper/centos-root
Data backup
scp -r /home/ root@10.10.108.93:/root/home50/*
Unmount
umount -l /home lvextend -L +80g /dev/centos/root
Need to update xfs after adding
xfs_growfs /dev/mapper/centos-root
Unable to mount and need to be repaired
xfs_repair /dev/cl/home
Due to the long repair time of several T
Delete lv home
lvremove /dev/centos/home
Create 1.8t lv home
lvcreate -n home -L 1.9T /dev/centos
Format to xfs system
mkfs.xfs /dev/centos/home
hang Load
mount /dev/mapper/centos-home /home
Restore data back
Increase home size
lvextend -L +1.8t /dev/centos/home xfs_growfs /dev/mapper/cl-home
Restore home size at this time
Restore data back
scp -r root@10.10.108.93:/root/home52/* /home/
2. Reduce
xfs does not support reduction. lvreduce cannot be used, but resize2fs cannot be used. An error will be reported: Couldn't find valid filesystem superblock. This means that the reduced logical partition needs to be reformatted through the mkfs.
Pay attention to the boot mount
cat /etc/fstab 60上 lvreduce -L 5t /dev/centos/home lvextend -L +1.8t /dev/centos/root xfs_growfs /dev/mapper/centos-home
Recommended learning: "
docker video tutorialThe above is the detailed content of What should I do if the docker image is missing?. For more information, please follow other related articles on the PHP Chinese website!

docker中rm和rmi的区别:rm命令用于删除一个或者多个容器,而rmi命令用于删除一个或者多个镜像;rm命令的语法为“docker rm [OPTIONS] CONTAINER [CONTAINER...]”,rmi命令的语法为“docker rmi [OPTIONS] IMAGE [IMAGE...]”。

docker官方镜像有:1、nginx,一个高性能的HTTP和反向代理服务;2、alpine,一个面向安全应用的轻量级Linux发行版;3、busybox,一个集成了三百多个常用Linux命令和工具的软件;4、ubuntu;5、PHP等等。

docker对于小型企业、个人、教育和非商业开源项目来说是免费的;2021年8月31日,docker宣布“Docker Desktop”将转变“Docker Personal”,将只免费提供给小型企业、个人、教育和非商业开源项目使用,对于其他用例则需要付费订阅。

docker容器重启后数据会丢失的;但是可以利用volume或者“data container”来实现数据持久化,在容器关闭之后可以利用“-v”或者“–volumes-from”重新使用以前的数据,docker也可挂载宿主机磁盘目录,用来永久存储数据。

docker能安装oracle。安装方法:1、拉取Oracle官方镜像,可以利用“docker images”查看镜像;2、启动容器后利用“docker exec -it oracle11g bash”进入容器,并且编辑环境变量;3、利用“sqlplus /nolog”进入oracle命令行即可。

解决方法:1、停止docker服务后,利用“rsync -avz /var/lib/docker 大磁盘目录/docker/lib/”将docker迁移到大容量磁盘中;2、编辑“/etc/docker/daemon.json”添加指定参数,将docker的目录迁移绑定;3、重载和重启docker服务即可。

AUFS是docker最早支持的存储引擎。AUFS是一种Union File System,是文件级的存储驱动,是Docker早期用的存储驱动,是Docker18.06版本之前,Ubuntu14.04版本前推荐的,支持xfs、ext4文件。

容器管理ui工具有:1、Portainer,是一个轻量级的基于Web的Docker管理GUI;2、Kitematic,是一个GUI工具,可以更快速、更简单的运行容器;3、LazyDocker,基于终端的一个可视化查询工具;4、DockStation,一款桌面应用程序;5、Docker Desktop,能为Docker设置资源限制,比如内存,CPU,磁盘镜像大小;6、Docui。


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

Dreamweaver CS6
Visual web development tools

WebStorm Mac version
Useful JavaScript development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
