Linux MySQL安装

安装步骤

1、创建mysql组 groupadd mysql

2、创建mysql用户 useradd -r -g mysql mysql

3、切换到mysql安装包目录并解压
cd /bigdata
tar zxvf mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz

4、 安装包重命名

mv mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz

5、创建软连接

ln -s /bigdata/mysql-5.7.20 /usr/local/mysql

6、 添加环境变量 vim /etc/profile

export MYSQL_HOME=/usr/local/mysql
export PATH=$PATH: ${MYSQL_HOME}/bin

7、 编译更新环境变量
source /etc/profile

8、进入到mysql安装目录
cd /usr/local/mysql

9、创建文件夹 mysql-files
mkdir mysql-files

10、用户和同一组用户具有读写执行权限 chmod 770 mysql-files

11、 更改属主
chown -R mysql:mysql .

12、mysql初始化
bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/mysql_data
#该步骤中会产生临时 root 密码，在 mysql_data 这个目录的 error 日志中可以找到 #root@localhost 密码
#需要自己记录下来

13、mkdir redolog undolog
14、修改属主 chown -R root .
chown -R mysql mysql_data mysql-files redolog undolog

15、拷贝启动文件
方便 mysql 的启动和关闭
cp support-files/mysql.server /etc/init.d/mysql.server
16、启动--守护进程
bin/mysqld_safe --user=mysql &
用命令关闭和启动
/etc/init.d/mysql.server stop
/etc/init.d/mysql.server start

18、安装过程中输出mysql_data/error.log的信息中，不应该含有ERROR信息
19、通过bin/mysql -uroot -p 用临时密码，可以正常登录。
20、修改 root 用户密码
alter user 'root'@'localhost' identified by '123456';

 

/etc/my.cnf

#配置文件 my.cnf

[mysqld]
########basic settings########
server-id = 11
port = 3306
user = mysql
bind_address = 172.31.236.77 #根据实际情况修改
autocommit = 0
character_set_server=utf8mb4
skip_name_resolve = 1
max_connections = 800
max_connect_errors = 1000
datadir = /usr/local/mysql/mysql_data #根据实际情况修改
transaction_isolation = READ-COMMITTED
explicit_defaults_for_timestamp = 1
join_buffer_size = 134217728
tmp_table_size = 67108864
tmpdir = /tmp
max_allowed_packet = 16777216
sql_mode = "STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER"
interactive_timeout = 1800
wait_timeout = 1800
read_buffer_size = 16777216
read_rnd_buffer_size = 33554432
sort_buffer_size = 33554432
lower_case_table_names=1

########log settings########
log_error = error.log
slow_query_log = 1
slow_query_log_file = slow.log
log_queries_not_using_indexes = 1
log_slow_admin_statements = 1
log_slow_slave_statements = 1
log_throttle_queries_not_using_indexes = 10
expire_logs_days = 90
long_query_time = 2
min_examined_row_limit =100

########replication settings########
master_info_repository = TABLE
relay_log_info_repository = TABLE
log_bin = bin.log
sync_binlog = 1
gtid_mode = on
enforce_gtid_consistency = 1
log_slave_updates
binlog_format = row
relay_log = relay.log
relay_log_recovery = 1
binlog_gtid_simple_recovery = 1
slave_skip_errors = ddl_exist_errors

########innodb settings########
innodb_page_size = 8192
innodb_buffer_pool_size = 1G #根据实际情况修改
innodb_buffer_pool_instances = 8
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_lru_scan_depth = 2000
innodb_lock_wait_timeout = 5
innodb_io_capacity = 4000
innodb_io_capacity_max = 8000
innodb_flush_method = O_DIRECT
innodb_file_format = Barracuda
innodb_file_format_max = Barracuda
innodb_log_group_home_dir = /usr/local/mysql/redolog/ #根据实际情况修改
innodb_undo_directory = /usr/local/mysql/undolog/ #根据实际情况修改
innodb_undo_logs = 128
innodb_undo_tablespaces = 3
innodb_flush_neighbors = 1
innodb_log_file_size =1G
innodb_log_buffer_size = 16777216
innodb_purge_threads = 4
innodb_large_prefix = 1
innodb_thread_concurrency = 64
innodb_print_all_deadlocks =1
innodb_strict_mode = 1
innodb_sort_buffer_size = 67108864
########semi sync replication settings########
plugin_dir=/usr/local/mysql/lib/plugin #根据实际情况修改
#plugin_load "rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"
loose_rpl_semi_sync_master_enabled = 1
loose_rpl_semi_sync_slave_enabled = 1
loose_rpl_semi_sync_master_timeout = 5000

[mysqld-5.7]
innodb_buffer_pool_dump_pct = 40
innodb_page_cleaners = 4
innodb_undo_log_truncate = 1
innodb_max_undo_log_size = 1G
innodb_purge_rseg_truncate_frequency = 128
binlog_gtid_simple_recovery=1
log_timestamps=system
transaction_write_set_extraction=MURMUR32
show_compatibility_56=on

[client]
default-character-set=utf8mb4