[root@lnmp ~]# mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 13 Server version: 8.0.21 Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Segmentation fault (核心已转储)原因好像是和C语言有关系
解决办法:
修改terminal.c文件重新编译安装
[root@lnmp mysql-8.0.21]# find ./ -name terminal.c ./extra/libedit/libedit-20190324-3.1/src/terminal.c查找出来之后按照以下方式修改
[root@lnmp mysql-8.0.21]# vim /opt/mysql-8.0.21/extra/libedit/libedit-20190324-3.1/src/terminal.c
842 terminal_set(EditLine *el, const char *term)
843 {
844 int i;
845 /*char buf[TC_BUFSIZE];*/
846 char *area;
847 const struct termcapstr *t;
848 sigset_t oset, nset;
849 int lins, cols;
850
851 (void) sigemptyset(&nset);
852 (void) sigaddset(&nset, SIGWINCH);
853 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
854
855 area = NULL;

修改完之后在重新编译安装就可以了!
还得重来一遍,想想都费劲啊!