docker-03.docker container management

1. Details of docker common commands 1.1 docker info Containers: 3 Number of containers Running: 2 Number of containers running Paused: 0 Suspended docker Number Stopped: 1 Stopped docker Number Images: 15 Mirror number Server Version: 17.03.3-ce docker Edition Storage Driver: overlay Storage drive ...

Posted by adslworld.net on Sun, 23 Feb 2020 03:48:41 -0800

MySQL master slave -- data verification

Article directory 4. PT table checksum to verify master-slave data 4.0 references and installation 4.1. Pt table checksum verification principle 4.2 notes and common parameters 4.2.1 precautions 4.2.2 description of common parameters 4.3 best practices 4.4 troubleshooting of common problems 4.4.1, ...

Posted by paran0id Dan on Sun, 23 Feb 2020 02:12:25 -0800

Query the bank teller's records of handling business within half an hour

Find out the bank teller's account opening records within half an hour. See if there are 3 or more accounts opened within half an hour. A table is given, in which is the operation record of a teller. The structure of the table records is as follows: field data type Cid (customer id) int Ctime (t ...

Posted by davidska on Sat, 22 Feb 2020 23:32:13 -0800

[MySQL] Use MySQL (connect, select database, display database and table information)

Chapter 3 Using MySQL Article Directory Chapter 3 Using MySQL Connect Select Database Understanding databases and tables Summary Simple Records - MySQL will always - [English]Ben Forta You'll learn how to connect to and log in to MySQL, how to execute MySQL statements, and how to get information ...

Posted by TravisJRyan on Sat, 22 Feb 2020 18:48:14 -0800

Insert data of SQL bit by bit series

[SQL from bit by bit Analysis series articles] is a bit by bit summary in actual development, from the simplest SQL query to comprehensive analysis query When analyzing SQL, related operations in mybatis and Hibernate will also be analyzedClick to view details This section describes inserting data in ...

Posted by Paul1893 on Sat, 22 Feb 2020 09:04:51 -0800

flask theme - novel website development III (registration, login)

The previous several articles have prepared the database and data, and now they will be developed later. Some of them may be different from others on the Internet. I did it for the first time, and all the functions have been realized. This article is about development, registration and login. First, pas ...

Posted by diex on Sat, 22 Feb 2020 01:25:49 -0800

MySQL high availability MHA deployment

At present, MHA (Master High Availability) is a relatively mature solution in the aspect of MySQL high availability. In the process of MySQL failover, MHA can automatically complete the database failover operation within 0-30 seconds, and in the process of failover, MHA can guarantee the consistency of data to the greatest extent, so as to ach ...

Posted by KenGR on Fri, 21 Feb 2020 07:39:14 -0800

Classic case: the whole process of disk I/O high troubleshooting

Author: ye Jinrong, co-founder of zhishutang, and co-founder of 3306pai community Preface What causes the util and iowait of disk I/O of online database server to keep soaring? 1. Problem description A friend Xiaoming's online database gave a serious alarm. The business side reported that writing data was blocked all the time. Many locks ro ...

Posted by revaaron on Fri, 21 Feb 2020 05:07:54 -0800

Python crawler learning - crawl the public service platform of construction market supervision

Python crawler learning - crawl the public service platform of construction market supervision The code is only for learning and communication. Please do not use it for illegal purposes. In case of infringement, please click here Contact author delete The code is only for learning and communication ...

Posted by Tubby on Wed, 19 Feb 2020 08:16:37 -0800

Notes: Docker, Dockerfile Foundation

Article directory Basic concepts of Docker Docker installation Frequently used commands Container operation example Docker mirror image Docker container data volume Dockerfile Dockerfile architecture (reserved word instruction) Example of Docker installing mysql Push the local image to alicloud ...

Posted by kanenas.net on Wed, 19 Feb 2020 02:27:08 -0800