Programmer Think

The reason for the error is that the nginx service was not added, so the startup failed. Solution: 1. Create a new file named nginx under / root/etc/init.d / directory Or execute the command in the root directory: vim/etc/init.d/nginx (note that there is a space next to vim)   2. Insert the fol ...

brief introduction As Alibaba's important layout in APM and IOT, time series database carries Alibaba's future and platoon leader in physical network and future application monitoring market, and InfluxDB, the industry's number one time series database, has a large number of users both at home and abroad. Alibaba timely launched ALiyun InfluxD ...

Now all kinds of frameworks and libraries are very powerful, but also because of their powerful functions, many configurations are too heavy, so there are only a few that are really useful. Today, we encapsulate a general-purpose cylindrical graph based on echarts! If you want to know about other components, you can see that other components I ...

Article Navigation-readme Red Dust Novel Network https://wap.zuxs.net/ Configuring Spring Boot Hot Deployment The development of technology is always because people want to be lazy. If we don't want to change the code every time, we have to restart the server and run the code again. Then you can ...

Article directory Summary Step 1: Modifying Software Sources Step 2: Solving the Problem of Boot Card Step 3: Set up root account Step 4: configuring network systems (wifi and static ip) Installation driver Configuring Wireless Network Card with netplan Make the configured system an iso image ...

Opening a picture, the reader is happier, not to mention the structure chart.This schematic diagram was introduced in the previous article "kafka Producer's Storage Pool Mechanism". In the previous article, we introduced the message collection process (we became the "Storage Pool" mechanism) in this diagram. Here we introduc ...

In this highly informationized IT era, production systems, business operations, sales and support, as well as daily management of enterprises are increasingly dependent on computer information and services. The demand for the application of high availability (HA) technology is constantly increasing in order to provide continuous and uninterrup ...

Configuration example: https://blog.51cto.com/14227204/24389021. The working principle and function of keepalived: At first, keepalived was a powerful auxiliary tool designed specifically for LVS. It was mainly used to provide fault switching and health checking functions - to judge the availability of LVS load dispatcher and node server, to i ...

IPsecAgreement help IP Layer establishes secure and trusted data transmission channel. At present, there are such things as StrongSwan,OpenSwan And other mature solutions, and they all use Linux KernelXFRMThe framework receives and sends messages. XFRMThe correct pronunciation istransform(Transformation), This represents what the kernel protoc ...

Method public Class<?> loadClass(String name) throws ClassNotFoundException Play Class instances of this class by class name protected final Class<?> defineClass(byte[] b,int off,int len) According to the given bytecode stream b, off and len parameters represent the position and length of the actual class information in the byte arr ...