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zabbix monitoring service zabbix: it is an enterprise level open source solution based on WEB interface that provides distributed system monitoring and network monitoring functions. It can monitor various network parameters to ensure the safe operation of the server system, and provide flexible notification mechanism to enabl ...

Author: Chen Yi preface This article briefly introduces some tips of "MySQL client" often used in operation and maintenance. These tips will not be used by non professional DBAs. Professional DBAs are necessary. I hope you can use my share. The built-in commands of MySQL client are as follows, and we will explore 6 of them: List of ...

I collated Java advanced materials for free, including Java, Redis, MongoDB, MySQL, Zookeeper, Spring Cloud, Dubbo high concurrency distributed and other tutorials, a total of 30G, which needs to be collected by myself.Transfer gate: https://mp.weixin.qq.com/s/JzddfH-7yNudmkjT0IRL8Q   Exclusive lock: it is a pessimistic lock. synchronized is ...

Raspberry Pie Compile Install LANMP brief introduction My raspberry pie here is 3 B Edition, CPU4 Kernel, memory 1 G，System I use is Ubuntu 19.10 Edition.The mirror uses Ali's mirror with the following source: deb https://mirrors.aliyun.com/ubuntu-ports eoan main restricted deb https://mirrors.aliyun.com/ubuntu-ports eoan-updates main rest ...

Echo edit, welcome to reprint, reprint please declare article source.Welcome to add echo WeChat (Micro Signal: t2421499075) to exchange learning.Never lose a hundred battles, never claim to be a constant winner, never fail, and always strive to move forward.- That's really powerful!!! As we use many of the images in the docker library, we can ...

The importance of mysql (mariadb) database backup: Data is one of the most important files in a database. When our database is damaged, many of our programs will be affected, which will affect the normal operation of the company. Now more and more enterprises begin to pay more and more attention to the database, so we are requ ...

1. In the actual application scenario, we will use: if the data is in the table, update the data; if the data does not exist, insert the data. In oracle, you can use the merge into implementation, and in mysql, you can use the ON DUPLICATE KEY UPDATE. Here, only the merge into implementation method in oracle is introduced. The sql syntax is a ...

Introduction: The master-slave cascade is to reduce the pressure of the master database, which is more conducive to load balancing. If we don't have a cascade server, we can also achieve the effect of master-slave synchronization, but we don't recommend using it. On the one hand, the pressure of the master database is too hig ...

Source of mmm architecture As we all know, MySQL provides Master-Slave replication, and then it can easily realize Master master two-way replication, and build a Slave library for one of the Master nodes. In this way, the MySQL-MMM architecture is based on two-way replication between Master1 and master2, and Master-Slave replication between M ...

Data persistence of k8s kubernetes storage volume:We know that by default, the container's data is non persistent, and the data is lost after the container is destroyed, so docker provides a volume mechanism to store the data persistently. Similarly, k8s provides a more powerful volume mechanism and rich plug-ins to solve the problem of contai ...