1、环境

IP	192.168.109.111
mysql	5.7

2、mysql安装

2.1 查看是否存在mysql组合用户,若无则创建

cat /etc/group | grep mysql
cat /etc/passwd | grep mysql
groupadd mysql
useradd -r -g mysql mysql

2.2 准备工作

(1）传mysql-5.7.14-linux-glibc2.5-x86_64.tar.gz 到/usr/local

(2）这里mysql数据目录暂定为/data/mysql/ 日志目录为/data/mysql/log
mkdir -p /data/mysql3306
chown -R mysql:mysql /data/mysql3306

2.3 开始安装

cd /usr/local/
tar -xf mysql-5.7.14-linux-glibc2.5-x86_64.tar.gz
mv mysql-5.7.14-linux-glibc2.5-x86_64 mysql3306
chown -R mysql:mysql mysql3306/
cd mysql3306/
bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql3306/ --datadir=/data/mysql3306/
cp -a ./support-files/my-default.cnf /etc/my3306.cnf
cp -a ./support-files/mysql.server /etc/init.d/mysqld3306

2.4 修改/etc/my3306.cnf配置文件，启动mysql

my.cnf配置如下

cat >/etc/my3306.cnf<<EOF
[client]
port = 3306
socket = /tmp/mysql.sock

[mysqld]
basedir = /usr/local/mysql
port = 3306
socket = /tmp/mysql.sock
datadir = /data/mysql/
pid-file = /data/mysql/mysql.pid
log-error = /data/mysql/log/mysql.err

server-id = 1
#auto_increment_offset = 1
#auto_increment_increment = 2                                            #奇数ID

log-bin = mysql-bin                                                     #打开二进制功能,MASTER主服务器必须打开此项
binlog-format=mixed
#log-slave-updates=true
gtid-mode=on
enforce-gtid-consistency=true
master-info-repository=TABLE
#relay-log-info-repository=TABLE
#sync-master-info=1
slave-parallel-workers=0
#sync_binlog=0
binlog-checksum=CRC32
master-verify-checksum=1
slave-sql-verify-checksum=1
binlog-rows-query-log_events=1
expire_logs_days=7
max_binlog_size=1024M                                                   #binlog单文件最大值

#replicate-ignore-db = mysql                                             #忽略不同步主从的数据库
#replicate-ignore-db = information_schema
#replicate-ignore-db = performance_schema
#replicate-ignore-db = test
#replicate-ignore-db = zabbix

max_connections = 3000
max_connect_errors = 30

#skip-character-set-client-handshake                                     #忽略应用程序想要设置的其他字符集
#init-connect='SET NAMES utf8'                                           #连接时执行的SQL
character-set-server=utf8                                               #服务端默认字符集
wait_timeout=1800                                                       #请求的最大连接时间
interactive_timeout=1800                                                #和上一参数同时修改才会生效
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES                     #sql模式
max_allowed_packet = 10M
bulk_insert_buffer_size = 8M
query_cache_type = 1
query_cache_size = 128M
query_cache_limit = 4M
key_buffer_size = 256M
read_buffer_size = 16K

skip-name-resolve
slow_query_log=1
long_query_time = 6
slow_query_log_file=slow-query.log
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 16M

[mysql]
no-auto-rehash

[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

[mysqldump]
quick
max_allowed_packet = 16M

[mysqld_safe]
EOF

启动mysql
在 /etc/init.d/mysqld3306的46,47行添加

basedir=/usr/local/mysql3306
datadir=/data/mysql3306

重启mysql
service mysqld3306 start

5 修改mysql密码

cat /root/.mysql_secret
记录了mysql的初始密码
cd /usr/local/mysql/bin

./mysql -uroot -p
输入密码 进入mysql数据库

SET PASSWORD = PASSWORD('123456');
grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option;
flush privileges;

6添加环境变量

echo "export PATH=$PATH:/usr/local/mysql3306/bin" >>/etc/profile
source /etc/profile