1.准备环境
#my.cnf [client] port = 3306 socket = /tmp/mysql.sock [mysql] prompt="\u@\h:p \R:\m:\s [\d]>" #tee=/data/mysql/mysql_3306/data/query.log no-auto-rehash #[mysqld_multi] #mysqld = /usr/local/mysql/bin/mysqld_safe #mysqladmin = /usr/local/mysql/bin/mysqladmin #log = /opt/mysql/mysqld_multi.log [mysqld] #misc user = mysql basedir = /usr/local/mysql datadir = /data/mysql/mytest_3306/ port = 3306 socket = /tmp/mysql.sock event_scheduler = 0 #timeout interactive_timeout = 300 wait_timeout = 300 #character set character-set-server = utf8 open_files_limit = 65535 max_connections = 100 max_connect_errors = 100000 skip-name-resolve = 1 #logs log-output=file slow_query_log = 1 slow_query_log_file = slow.log log-error = error.log log_warnings = 2 pid-file = mysql.pid long_query_time = 1 #log-slow-admin-statements = 1 #log-queries-not-using-indexes = 1 log-slow-slave-statements = 1 #binlog binlog_format = mixed server-id = 203306 log-bin = mybinlog binlog_cache_size = 4M max_binlog_size = 1G max_binlog_cache_size = 2G sync_binlog = 0 expire_logs_days = 10 #relay log skip_slave_start = 1 max_relay_log_size = 1G relay_log_purge = 1 relay_log_recovery = 1 log_slave_updates #slave-skip-errors=1032,1053,1062 explicit_defaults_for_timestamp=1 #buffers & cache table_open_cache = 2048 table_definition_cache = 2048 table_open_cache = 2048 max_heap_table_size = 96M sort_buffer_size = 2M join_buffer_size = 2M thread_cache_size = 256 query_cache_size = 0 query_cache_type = 0 query_cache_limit = 256K query_cache_min_res_unit = 512 thread_stack = 192K tmp_table_size = 96M key_buffer_size = 8M read_buffer_size = 2M read_rnd_buffer_size = 16M bulk_insert_buffer_size = 32M #myisam myisam_sort_buffer_size = 128M myisam_max_sort_file_size = 10G myisam_repair_threads = 1 #innodb innodb_buffer_pool_size = 100M innodb_buffer_pool_instances = 1 #innodb_data_file_path = ibdata1:1G:autoextend innodb_flush_log_at_trx_commit = 2 innodb_log_buffer_size = 64M innodb_log_file_size = 100M innodb_log_files_in_group = 3 innodb_max_dirty_pages_pct = 50 innodb_file_per_table = 1 innodb_rollback_on_timeout innodb_status_file = 1 innodb_io_capacity = 2000 transaction_isolation = READ-COMMITTED innodb_flush_method = O_DIRECT [mysqld3306] port =3306 server-id=203306 basedir= /usr/local/mysql datadir = /data/mysql/mysql_3306/data socket = /tmp/mysql_3306.sock innodb_buffer_pool_size = 100m #transaction_isolation = REPEATABLE-READ [mysqld3308] port=3308 server-id=203308 #binlog-do-db=db01 basedir= /usr/local/mysql datadir = /data/mysql/mysql_3308/data socket = /tmp/mysql_3308.sock innodb_buffer_pool_size = 100m innodb_flush_log_at_trx_commit = 2 sync_binlog = 0 [mysqld3309] port=3309 server-id=203309 #binlog-do-db=db01 basedir= /usr/local/mysql datadir = /data/mysql/mysql_3309/data socket = /tmp/mysql_3309.sock innodb_buffer_pool_size = 100m innodb_flush_log_at_trx_commit = 2 sync_binlog = 0
实验要求centOS 6.X 64位
MySQL-5.6.22（之后的版本）
mysql-5.6.27-linux-glibc2.5-x86_64.tar.gz
也可以使用国内mirrors下载
PS： 头等大事： 把selinux禁掉 把iptable也关掉
永久方法 – 需要重启服务器
修改/etc/selinux/config文件中设置SELINUX=disabled ，然后重启服务器。
临时方法 – 设置系统参数
使用命令setenforce 0
iptables开机自动启动：
开启： chkconfig iptables on
关闭： chkconfig iptables off
iptables关闭服务：
开启： service iptables start
关闭： service iptables stop
2.解压二进制安装包创建硬链接
#mkdir /opt/software
#tar xvf /opt/software/mysq-5.6.27-linux-glibc2.5-x86_64.tar.gz
#cd /usr/local/
#ln -s /opt/software/mysql-5.6.27-linux-glibc2.5-x86_64 mysql
3.新建mysql用户，用户组，指定datadir
#groupadd mysql
#useradd -g mysql -M -s /sbin/nologin mysql
尽量不要用root启动
4. 创建mysql数据文件和日志存位置并赋予权限
5.编写配置文件my.cnf#mkdir -p /data/mysql/mysql3316/{data,logs,tmp} #命名 项目+端口号#chown -R mysql:mysql /data/mysql/mysql3316/#chown -R mysql:mysql /opt/software/
#chown -R mysql:mysql /usr/local/mysql
确认权限
vi %s/3306/3316/g 改变下配置文件
#cd /usr/local/mysql/
#chown -R mysql:mysql *
#./scripts/mysql_install_db
PS：输出两个OK表示初始化成功
Installing MySQL system tables...2016-05-12 10:08:01 0 [Note] ./bin/mysqld (mysqld 5.6.27-log) starting as process 25305 ...
#echo $path 查看当前的环境变量#echo "PATH=$PATH:/usr/local/mysql/bin" >>/etc/profile#source /etc/profile
#cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql
#/etc/init.d/mysql start9.安全加固
#service mysql start
#/usr/local/mysql/bin/mysqld_safe --defaults-file=/etc/my.cnf &#/usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf &
10.怎么确认mysql是正常启动的删除匿名账户
>delete from mysql.user where user!='root' or host!='localhost';
处理无用的数据库表
>truncate table mysql.db;
>drop database test; 对test授权太宽泛
刷新权限库
#/usr/local/mysql/bin/mysqladmin -S /tmp/mysql.sock shutdown
A.查看进程是否存在
#ps axu | grep mysqld
B.查看端口是不是正常监听正确
#ss -tlnp
#netstat -nalp | grep mysqld
C.看错误日志是否有异常
#vim 或者 tail
TIPS：
启动报错解决思路看有没有error 防火墙 权限# cat /etc/sysconfig/iptables
初始化要有2个ok的输出
--datadir --basedir 也是从配置文件读
--user可以从配置文件读取
常用的命令
mysqlmysqlbinlogmysqldmysqld_safeperrormysqldump