linux-Centos7安装mysql5.7.19

1.下载mysql

网址： https://dev.mysql.com/downloads/mysql/

2.选择源码包，通用版点击下载

直接下载就可以了，不用登录

3.解压编译

先安装相关依赖包

yum install

pcre pcre-devel zlib zlib-devel openssl openssl-devel gd gd-devel libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel e2fsprogs e2fsprogs-devel krb5 krb5-devel lua-devel
 autoconf libxml2 libxml2-devel glibc glibc-devel glib2 glib2-devel bzip2 bzip2-devel ncurses ncurses-devel curl curl-devel libidn libidn-devel libtool libtool-libs libevent-devel libevent openldap openldap-devel nss_ldap openldap-clients openldap-servers libtool-ltdl libtool-ltdl-devel bison libgcrypt php-mcrypt libmcrypt libmcrypt-devel cmake gcc gcc-c++ ncurses-devel perl-Data-Dumper libicu-devel libquadmath-devel python-devel bzip2-devel

我也不做区分了；这些是搭建lnpm环境需要安装的相关依赖包，就全安装完了。

[root@localhost]#tar -zxvf  mysql-5.7.19.tar.gz

[root@localhost]#cd mysql-5.7.19.tar.gz

创建数据目录

[root@localhost]#mkdir -p /data/mysql

先用cmake编译，没有这个命令需要先yum安装

[root@localhost mysql-5.7.19]# yum install cmake

安装好cmake完成！

[root@localhost]#cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql/     #这个是编译安装之后的mysql目录所在地，可自行更改

-DMYSQL_DATADIR=/data/mysql/               #这个指向数据目录

-DMYSQL_UNIX_ADDR=/tmp/mysql.sock

-DSYSCONFDIR=/usr/local/mysql/conf/

-DWITH_MYISAM_STORAGE_ENGINE=1

-DWITH_INNOBASE_STORAGE_ENGINE=1

-DWITH_BLACKHOLE_STORAGE_ENGINE=1

-DWITH_ARCHIVE_STORAGE_ENGINE=1

-DWITH_MEMORY_STORAGE_ENGINE=1

-DWITH_READLINE=1

-DMYSQL_TCP_PORT=3306

-DENABLED_LOCAL_INFILE=1

-DDEFAULT_CHARSET=utf8

-DDEFAULT_COLLATION=utf8_general_ci

-DMYSQL_USER=mysql

-DWITH_SSL=system

-DWITH_ZLIB=system -DDOWNLOAD_BOOST=1 -DWITH_BOOST=/usr/local/boost    #从MySQL 5.7.5开始Boost库是必需安装的

可直接复制下方编译语句：

cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql/ -DMYSQL_DATADIR=/data/mysql/ -DMYSQL_UNIX_ADDR=/tmp/mysql.sock -DSYSCONFDIR=/usr/local/mysql/conf/ -DWITH_MYISAM_STORAGE_ENGINE= -DWITH_INNOBASE_STORAGE_ENGINE= -DWITH_BLACKHOLE_STORAGE_ENGINE= -DWITH_ARCHIVE_STORAGE_ENGINE= -DWITH_MEMORY_STORAGE_ENGINE= -DWITH_READLINE= -DMYSQL_TCP_PORT= -DENABLED_LOCAL_INFILE= -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DMYSQL_USER=mysql -DWITH_SSL=system -DWITH_ZLIB=system -DDOWNLOAD_BOOST= -DWITH_BOOST=/usr/local/boost

如下图：

编译之后make && make install  漫长的等待....之后就安装完成了

安装完成之后路径/usr/local/ 下面会有一个目录 mysql，这个目录就是我编译安装设置的路径-DCMAKE_INSTALL_PREFIX=/usr/local/mysql/

一般为了安全起见，我们都会创建一个mysql用户和mysql组，执行以下命令

#添加用户组

groupadd mysql

#添加用户mysql 到用户组mysql

useradd -g mysql mysql

 

给予mysql权限

chown -R mysql:mysql mysql

4.接下来配置启动向，设置开机启动

1. cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
2. chmod +x /etc/init.d/mysqld
3. chkconfig --add mysqld
4. chkconfig mysqld on

配置/etc/my.cnf，如果没有my.cnf可自行新建添加 ,  仅供参考

[client]
port =
socket = /tmp/mysql.sock
default-character-set = utf8mb4
[mysqld]
port =
socket = /tmp/mysql.sock
basedir = /usr/local/mysql
datadir = /data/mysql
pid-file = /data/mysql/mysql.pid
user = mysql
bind-address = 0.0.0.0
server-id =
init-connect = 'SET NAMES utf8mb4'
character-set-server = utf8mb4
#skip-name-resolve
#skip-networking
back_log =
max_connections =
max_connect_errors =
open_files_limit =
table_open_cache =
max_allowed_packet = 4M
binlog_cache_size = 1M
max_heap_table_size = 8M
tmp_table_size = 16M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
sort_buffer_size = 8M
join_buffer_size = 8M
key_buffer_size = 4M
thread_cache_size =
query_cache_type =
query_cache_size = 8M
query_cache_limit = 2M
ft_min_word_len =
log_bin = mysql-bin
binlog_format = mixed
expire_logs_days =
log_error = /data/mysql/mysql-error.log
slow_query_log =
long_query_time =
slow_query_log_file = /data/mysql/mysql-slow.log
performance_schema =
explicit_defaults_for_timestamp
#lower_case_table_names =
skip-external-locking
default_storage_engine = InnoDB
#default-storage-engine = MyISAM
innodb_file_per_table =
innodb_open_files =
innodb_buffer_pool_size = 64M
innodb_write_io_threads =
innodb_read_io_threads =
innodb_thread_concurrency =
innodb_purge_threads =
innodb_flush_log_at_trx_commit =
innodb_log_buffer_size = 2M
innodb_log_file_size = 32M
innodb_log_files_in_group =
innodb_max_dirty_pages_pct =
innodb_lock_wait_timeout =
bulk_insert_buffer_size = 8M
myisam_sort_buffer_size = 8M
myisam_max_sort_file_size = 10G
myisam_repair_threads =
interactive_timeout =
wait_timeout =
[mysqldump]
quick
max_allowed_packet = 16M
[myisamchk]
key_buffer_size = 8M
sort_buffer_size = 8M
read_buffer = 4M
write_buffer = 4M

接下来就执行初始化数据库语句：

注意 mysql_install_db 已经不再推荐使用了，建议改成 mysqld –initialize 完成实例初始化。

/usr/local/mysql/bin/mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql

这步很重要，如果没有初始化直接启动数据库会报错

ERROR! The server quit without updating PID file (/data/mysql/mysql.pid).

如果初始化失败或者报以下错误，就需要先清空你的/data/mysql目录了，因为mysql目录下面有数据所以初始化执行中止。

2017-08-29T13:39:47.241469Z 0 [ERROR] --initialize specified but the data directory has files in it. Aborting.
2017-08-29T13:39:47.241536Z 0 [ERROR] Aborting

清空之后再重新初始化

/usr/local/mysql/bin/mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql

接下来可以启动mysql了

service mysqld start

登录测试

/usr/local/mysql/bin/mysql -uroot -p

因为初始化--initialize-insecure 是默认没有密码的所以密码不用输入直接确定就行了；

假如登录报错

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

检查一下你启动数据库成功没  可执行  ps -ef | grep mysql  看看进程是不是启动状态

空密码不安全所以我们还要设置密码，下面命令中的\"root\"就是设置密码区域，我的密码设置为root，可自行修改

[root@localhost local]# /usr/local/mysql/bin/mysql -e "grant all privileges on *.* to root@'127.0.0.1' identified by \"root\" with grant option;"
[root@localhost local]# /usr/local/mysql/bin/mysql -e "grant all privileges on *.* to root@'localhost' identified by \"root\" with grant option;"

接下来再登录测试一次密码修改成功没有就完成啦！

mysql查询sql有很多限制，比如sql查询语句分组查询之类的会有很多限制，设置sql宽松模式

配置文件里面添加sql_mode=STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION

查看默认sql_mode配置，登录到>mysql执行命令select @@sql_mode;即可查看