Since redis was recently installed on the server, it was attacked by the malicious program minerd, which caused the CPU usage to exceed 90%. It is very helpful to find an article on the Internet!
operate:
1. Remove the relevant Trojan horse content in the crontab file:
/var/spool/cron/crontabs/root
/var/spool/cron/root
2. Kill daemon ntp, delete related files
3. Kill the Trojan process and related files
Fourth, kill the installation files and password-free login files
Fifth, kill the files that start with the system
Reprint address: http://jingyan.baidu.com/article/b7001fe1bf71ee0e7282dddb.html