Course Intermediate  11340

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Course Advanced  17646

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Course Advanced  11353

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

Course Introduction：The command to use CMD to close a port: 1. Use CMD to close a specific port; 2. Use CMD to close all open ports; 3. Use CMD to open a specific port; 4. Use CMD to open all open ports.

2023-11-21 comment 0  5424

Course Introduction：MySQL is a commonly used relational database management system that can interact with data between different servers. However, in actual applications, sometimes there is a problem that MySQL cannot connect to the remote server. This article will cover some common causes and solutions. 1. Reasons why MySQL cannot connect to the remote server: 1. The port is not open or blocked by the firewall. By default, the port that the MySQL server listens to is port 3306. If the port is not open or blocked by a firewall, you cannot connect to the MySQL server. Need to make sure the server port is open or

2023-05-18 comment 0  8702

Course Introduction：The reasons why Oracle cannot find the monitor: 1. The monitor program has not been started, causing the connection to fail; 2. The monitor program is configured incorrectly. Make sure the port number and other related configurations are correct by checking the configuration of the parameter file; 3. There is a firewall setting problem, check the firewall Configuration, make sure the relevant ports are open; 4. Host name resolution issues, check the configuration of host name resolution, and make sure the host name resolution is correct; 5. The listening program crashes or closes abnormally, check the log file of the listening program; 6. Network connection Problem due to network failure, network configuration error or network overload.

2023-08-04 comment 0  3423

Course Introduction：The solution to the problem of being unable to connect to the Workerman framework under CentOS7 is: 1. First, you need to confirm whether the corresponding port is open, for example, whether the [Alibaba ecs] security group port is open; 2. If the port is open, it may be because the firewall has not been closed, execute the corresponding Just command to temporarily turn off the firewall.

2019-12-11 comment 0  2356

Course Introduction：Navicat connection failure occurs because the firewall is not closed. There are two ways to solve this problem: first, turn off the firewall; second, set the firewall to open ports.

2019-08-15 comment 0  18130