Programmer Group

Blog Outline: 1. Introduction to docker 2. Three core concepts of docker1. Mirror2. Containers3. Warehouses 3. Installation and basic operation of docker1. Installation and Startup2. Mirror operation of docker3. Container operation of docker 1. Introduction to docker As the most popular project in the open source community, Docker is an op ...

Author: Yang Taotao MySQL 8.0 redefines error log output and filtering to improve the bloated and unreadable error log. For example, JSON output is added and displayed in serial number and JSON suffix after the original log. For example, MySQL on my machine saves the error log mysqld.log.00.json in JSON: [root@centos-ytt80 mysql80]# jq . mysq ...

Environmental description: host name Operating System Version ip docker version kubelet version To configure Remarks master Centos 7.6.1810 172.27.9.131 Docker 18.09.6 V1.14.2 2C2G master host node01 Centos 7.6.1810 172.27.9.135 Docker 18.09.6 V1.14.2 2C2G Node node node02 Centos 7.6.1810 172.27.9.136 Docker 18.09.6 V1.14.2 2C2G Node ...

For some tables that often do archiver or purge operations, if we reclaim table space irregularly, the volume of tables will increase. However, the vacuum full in pg will block the read and write operations in the process of recovery, and can not run directly in the production environment. Therefore, in the production environment, the commonl ...

Nginx is specially developed for performance optimization. Its greatest advantage is its stability and low system resource consumption, as well as its high processing capacity for concurrent http connections. A single physical server can support 20,000-50,000 concurrent requests. This is why it provides a large number of services such as socia ...

Catalog Docker container and KVM virtualization Installation and Use of Docker The Use of Vulhub in Vulhub Vulhub Based on Docker Docker container and KVM virtualization Docker Container is an open source application container engine that a ...

1. Adding new users Because the user rights of root are too large in daily use, a user is added for daily use or for other people's use. 1 Additional Users adduser [username] [root@centos ~]# adduser dex 2 Setting Password passwd [username] [root@centos ~]# passwd dex Changing password for ...

After chatting with some students who use clickhouse, many small and medium-sized companies still use the stand-alone version, which is unexpected; perhaps it is because of the clickhouse's performance in seconds and seconds, coupled with the small amount of data, the cost of data recovery is not high. ...

Package Management of CentOS System: yum Introduction to yum yum client /etc/yum.conf Warehouse Pointing Definition View the local yum source Usage of the yum command Command command options Display warehouse list Display package Installation package Upgrade package Check available upgrades Unloadi ...

Collect all the information on the Internet, organize some steps, personal records, memorandums! Install Docker centos7 installs docker Refer to https://www.runoob.com/docker/centos-docker-install.html and follow these steps for installation Remove the old version yum remove docker \ docker-cl ...