Official introduction

The function of using password to log in to the Linux elastic cloud server (SSH mode) is disabled by default. If users have the need to open permission, they can set it by themselves after logging in to the elastic cloud server. To avoid security risks, you must reset the password of the general account of the Linux elastic ECS after you open the SSH password mode remote login permission.

Summary: Huawei Cloud Special Pit Xiaobai user In my opinion, Huawei Cloud is only suitable for Understanding ability & Can use search engines 。

-Read the rest-

Introduction:

Chrome developer tools are very powerful. I believe programmers will not be unfamiliar with them, but some small functions may not be known to the public. So, write this article to list the functions you may not know. Some functions may be more practical, while others may not be. You are also welcome to add and communicate.

Code formatting:

Many css/js codes will be minify. You can click the one at the bottom left corner of the code window { } Chrome will format the tag for you.

-Read the rest-

The ab command will create many concurrent access threads to simulate multiple visitors accessing a URL at the same time. Its test target is based on URL, so it can be used to test the load pressure of Apache, as well as the pressure of nginx, lighthttp, tomcat, IIS and other Web servers. The ab command has very low requirements on the computer issuing the load. It does not occupy a very high CPU or a lot of memory, but it will cause a huge load on the target server. Its principle is similar to CC attacks. You should also pay attention to your own testing. Otherwise, too much load at one time may cause the target server to run out of resources, or even crash in serious cases.

Principle of Apache Bench command:

The ab command will create many concurrent access threads to simulate multiple visitors accessing a URL at the same time. Its test target is based on URL, so it can be used to test the load pressure of Apache, as well as the pressure of nginx, lighthttp, tomcat, IIS and other Web servers.

The ab command has very low requirements on the computer issuing the load. It does not occupy a very high CPU or a lot of memory, but it will cause a huge load on the target server. Its principle is similar to CC attacks. You should also pay attention to your own testing. Otherwise, too much load at one time may cause the target server to run out of resources, or even crash in serious cases.

-Read the rest-

Android jelly style emoji is finally going to be history.

Just finished last week Google I/O At the conference, when geeks were lamenting that technology has changed the world, the news released at the conference aroused my interest.

According to Google, in its upcoming Android O, more than 2000 emojis of the Android system will be redesigned and improved. The "jelly man" emojis that were once complained about and loved by countless Android users will also be replaced. Google's "big cosmetic surgery" has lasted for 18 months.

-Read the rest-

Built with pagoda (BT) panel LNMP Environment (L: Linux ，N: Nginx ，M: MySQL ，P: PHP ）When testing the code locally, no problems were found, but when it was placed on the server five hundred Error. There is no error prompt. View the log and only see five hundred , very puzzled, then Goole checked some information and made a note here.

-Read the rest-