执行mysql8.0.34安装过程中的：bin/mysqld --initialize --user=mysql 步骤时报错。

报错1：bin/mysqld: error while loading shared libraries: libnuma.so.1: cannot open shared object file: No such file or directory

解决：

	centos：yum install numactl
	ubuntu：apt-get install numactl

报错2：

bin/mysqld: /lib64/libstdc++.so.6: version `CXXABI_1.3.11' not found (required by bin/mysqld)
bin/mysqld: /lib64/libstdc++.so.6: version `CXXABI_1.3.8' not found (required by bin/mysqld)
bin/mysqld: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.22' not found (required by bin/mysqld)
bin/mysqld: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by bin/mysqld)
bin/mysqld: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by bin/mysqld)
bin/mysqld: /lib64/libstdc++.so.6: version `CXXABI_1.3.9' not found (required by bin/mysqld)
bin/mysqld: /lib64/libc.so.6: version `GLIBC_2.28' not found (required by bin/mysqld)
bin/mysqld: /lib64/libc.so.6: version `GLIBC_2.25' not found (required by /project/mysql-8.0.33-linux-glibc2.28-x86_64/bin/../lib/private/libcrypto.so.1.1)
bin/mysqld: /lib64/libc.so.6: version `GLIBC_2.28' not found (required by /project/mysql-8.0.33-linux-glibc2.28-x86_64/bin/../lib/private/libprotobuf-lite.so.3.19.4)
bin/mysqld: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /project/mysql-8.0.33-linux-glibc2.28-x86_64/bin/../lib/private/libprotobuf-lite.so.3.19.4)
bin/mysqld: /lib64/libstdc++.so.6: version `CXXABI_1.3.9' not found (required by /project/mysql-8.0.33-linux-glibc2.28-x86_64/bin/../lib/private/libprotobuf-lite.so.3.19.4)
bin/mysqld: /lib64/libstdc++.so.6: version `CXXABI_1.3.8' not found (required by /project/mysql-8.0.33-linux-glibc2.28-x86_64/bin/../lib/private/libprotobuf-lite.so.3.19.4)
bin/mysqld: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by /project/mysql-8.0.33-linux-glibc2.28-x86_64/bin/../lib/private/libprotobuf-lite.so.3.19.4)

解决：
感谢： https://blog.csdn.net/qilaixiaoboluo/article/details/136381545
需要安装升级响应库，比较麻烦，暂时没试
然后，发现低版本对这些包要求不高，所以选择了降版本到5.7，好使…emo…
这里主要是我的需求不高，没必要非得高版本，我的系统硬件很低，如有需求，可以选择docker部署

执行mysql5.7.44安装过程中的：bin/mysqld_safe --user=mysql & 步骤时报错。

某些文件不存在等

[2] 13323
(base) [root@VM-0-16-centos mysql]# 2024-03-15T05:56:31.855167Z mysqld_safe Logging to '/var/log/mariadb/mariadb.log'.
2024-03-15T05:56:31.888640Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
2024-03-15T05:56:32.359648Z mysqld_safe mysqld from pid file /var/run/mariadb/mariadb.pid ended

其实这些，自己指定个路径就行了

/usr/local/mysql/bin/mysqld \
--basedir=/usr/local/mysql  \
--datadir=/var/lib/mysql \
--plugin-dir=/usr/local/mysql/lib/plugin \
--user=mysql  \
--log-error=/var/log/mariadb/mariadb.log  \
--pid-file=/var/run/mariadb/mariadb.pid  \
--socket=/var/lib/mysql/mysql.sock

上面的路径都可以自定义，我就是懒得定义，那么出问题的目录都是因为权限不够
解决：

mkdir -p /var/log/mariadb
touch /var/log/mariadb/mariadb.log
chmod 777 -R /var/log/mariadb/
chown mysql:mysql -R /var/log/mariadb/ # 可不执行

服务启动，然后进入mysql时：./bin/mysql -uroot -p

报错：

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

解决：

# 简单方案
ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock

完整方案：感谢：https://blog.csdn.net/web_15534274656/article/details/126493970