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!

Installing and configuring Docker on Linux requires ensuring that the system is 64-bit and kernel version 3.10 and above, use the command "sudoapt-getupdate" and install it with the command "sudoapt-getupdate" and verify it with "sudoapt-getupdate" and. Docker uses the namespace and control groups of the Linux kernel to achieve container isolation and resource limitation. The image is a read-only template, and the container can be modified. Examples of usage include running an Nginx server and creating images with custom Dockerfiles. common

The reason for using Docker is that it provides an efficient, portable and consistent environment to package, distribute, and run applications. 1) Docker is a containerized platform that allows developers to package applications and their dependencies into lightweight, portable containers. 2) It is based on Linux container technology and joint file system to ensure fast startup and efficient operation. 3) Docker supports multi-stage construction, optimizes image size and deployment speed. 4) Using Docker can simplify development and deployment processes, improve efficiency and ensure consistency across environments.

Docker's application scenarios in actual projects include simplifying deployment, managing multi-container applications and performance optimization. 1.Docker simplifies application deployment, such as using Dockerfile to deploy Node.js applications. 2. DockerCompose manages multi-container applications, such as web and database services in microservice architecture. 3. Performance optimization uses multi-stage construction to reduce the image size and monitor the container status through health checks.

Select Docker in a small project or development environment, and Kubernetes in a large project or production environment. 1.Docker is suitable for rapid iteration and testing, 2. Kubernetes provides powerful container orchestration capabilities, suitable for managing and expanding large applications.

Docker is important on Linux because Linux is its native platform that provides rich tools and community support. 1. Install Docker: Use sudoapt-getupdate and sudoapt-getinstalldocker-cedocker-ce-clicotainerd.io. 2. Create and manage containers: Use dockerrun commands, such as dockerrun-d--namemynginx-p80:80nginx. 3. Write Dockerfile: Optimize the image size and use multi-stage construction. 4. Optimization and debugging: Use dockerlogs and dockerex

Docker is a containerization tool, and Kubernetes is a container orchestration tool. 1. Docker packages applications and their dependencies into containers that can run in any Docker-enabled environment. 2. Kubernetes manages these containers, implementing automated deployment, scaling and management, and making applications run efficiently.

The purpose of Docker is to simplify application deployment and ensure that applications run consistently in different environments through containerization technology. 1) Docker solves the environmental differences problem by packaging applications and dependencies into containers. 2) Create images using Dockerfile to ensure that the application runs consistently anywhere. 3) Docker's working principle is based on images and containers, and uses the namespace and control groups of the Linux kernel to achieve isolation and resource management. 4) The basic usage includes pulling and running images from DockerHub, and the advanced usage involves managing multi-container applications using DockerCompose. 5) Common errors such as image building failure and container failure to start, you can debug through logs and network configuration. 6) Performance optimization construction

The methods of installing and using Docker on Ubuntu, CentOS, and Debian are different. 1) Ubuntu: Use the apt package manager, the command is sudoapt-getupdate&&sudoapt-getinstalldocker.io. 2) CentOS: Use the yum package manager and you need to add the Docker repository. The command is sudoyumininstall-yyum-utils&&sudoyum-config-manager--add-repohttps://download.docker.com/lin


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

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

WebStorm Mac version
Useful JavaScript development tools

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

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

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

SublimeText3 English version
Recommended: Win version, supports code prompts!
