mysql升级失败
1 用./upgrade.sh mysql 升级到mysql 8.0.16，报下面的错误。
Uncompress mysql-boost-8.0.16.tar.gz...
cd mysql-8.0.16...
^[ Download or use exist boost...^[[0m
-- Running cmake version 2.8.12.2
CMake Warning at CMakeLists.txt:43 (MESSAGE):
Please use cmake3 rather than cmake on this platform
-- Please install cmake3 (yum install cmake3)
CMake Error at CMakeLists.txt:55 (CMAKE_MINIMUM_REQUIRED):
CMake 3.4.3 or higher is required.You are running version 2.8.12.2
-- Configuring incomplete, errors occurred!
make: *** No targets specified and no makefile found.Stop.
make: *** No targets specified and no makefile found.Stop.
make: *** No rule to make target `install'.Stop.
groupadd: group 'mysql' already exists
useradd: user 'mysql' already exists
include/upgrade_mysql.sh: line 532: /usr/local/mysql/bin/mysqld: No such file or directory
2 然后我 yum install cmake3 安装了cmake3。
3 我又重新用./upgrade.sh mysql 升级到mysql 8.0.16，然后报下面的错误：
============================check files==================================
mysql-boost-8.0.16.tar.gz
============================check files==================================
Starting backup all databases...
If the database is large, the backup time will be longer.
include/upgrade_mysql.sh: line 7: /usr/local/mysql/bin/mysqldump: No such file or directory
MySQL databases backup failed,Please backup databases manually!
# mysql
bash: mysql: command not found
这个情况应该怎么处理呢？
只安装上肯定是没有的他不会去主动找cmake3，只会找默认cmake
mv /usr/bin/cmake /usr/bin/cmake.old
ln -s /usr/bin/cmake3 /usr/bin/cmake
或直接
yum remove cmake 把老版本的卸载掉
再 ln -s /usr/bin/cmake3 /usr/bin/cmake
升级失败需要按教程恢复mysql后再进行升级
PS：使用epel安装cmake3方法
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