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Module Apache instructions About Apache Apache Is the world's number one Web server software. It can run on almost all widely used computer platforms. Because of its cross platform and security, it is one of the most popular Web server-side software. It is fast, reliable and can be expanded through ...

State & Fault Tolerance Stateful function s and operators for flow processing can store the calculation state of each Event in the flow calculation process. State computation is the construction of precise operation will not or lack of plate. Flink needs to know the status of the computing node, so ...

Structure of this chapter Layer of Docker image Basic creation method of Dockerfile Dockerfile creating various application containers Layer of Docker image Each instruction in the Dockerfile creates a new image layer The image layer will be cached and reused When the Dockerfile instruction is modified, the copied file changes, or the speci ...

1. Enter / etc/yum/repos.d / directory (where the configuration files of yum software warehouse are stored) [root@localhost ~]# cd /etc/yum.repos.d/ 2. Delete the original yum source [root@localhost yum.repos.d]# rm -f * 3. Use vim editor to create a new configuration file (the file name is optional, but the suffix must b ...

Pod Controller-DaemonSet This chapter gives you an explanation of the second controller, DaemonSet.You'll learn what DaemonSet is, and what it's like to do with its configuration. Finally, I've come up with the proper terms for stain and tolerance, and if you already have a foundation, you can optionally go directly to that chapter (see yourse ...

Experiment Description: In automatic deployment, other SSH machines will often operate. However, each password authentication is very annoying, especially for a long password, so SSH password free login is essential; When there are many machines, Ansible is often used to distribute and execute SSH password free login scripts, so that each machi ...

# PostgreSQL database full database backup script #Author: old farmer (Liu Qihua) #QQ: 46715422 #Email: 46715422@qq.com #Wechat: 46715422 Test operating system environment: CentOS 6/7, Debian 8/9, FreeBSD 11/12 Test PostgreSQL version: 11 beta3 User name and password: postgres The database we need to back up this time: test Script requ ...

1. Development environment server side: centos 7 python-3.6.2 Client: Windows 7 python-3.6.2 pycharm-2018 Program purpose: 1. Learn to use socketserver to achieve concurrent processing of multiple clients. 2. Learn to use struct to solve TCP sticky packages. 2. Programming (I am a novice bird, for development specifications, interface design is ...

Record the daily use commands of docker. This article is mainly for linux + mac operating system. It is not sure whether window is applicable. Use it carefully <!-- more --> 1. docker process Three common case s are docker process start, stop and restart # Start docker service docker start # Shutdown docker service docker stop # Restart d ...

How to build an enterprise CA certificate server? Define system environment: CentOS 7.4 ca.com     192.168.80.181   openssl* mail.com   192.168.80.182  dovecot* client.com  192.168.80.183 mutt* Modify three host names: ①hostnamectl set-hostname    xx.com  exit logout Reconnect ② vi /etc/hosts    192.168.80.181 ca.com   192.168.80.182 mai ...