Mysql部署

1. 下载 Mysql 版本为: mysql-5.6.43-linux-glibc2.12-x86_64.tar.gz (注意:下载二进制文件)  存放位置: /usr/local

2. 检查机器上是否安装了MySQL

## root用户  
$> ps -ef|grep mysqld  
$> rpm -qa |grep -i mysql  

3. 解压、改名

##root 用户  
$> cd /usr/local  
$> tar xzvf mysql-5.6.43-linux-glibc2.12-x86_64.tar.gz   
$> mv mysql-5.6.43-linux-glibc2.12-x86_64.tar.gz mysql  

4. 创建组和用户，并为新用户设置密码

##root 用户
$> groupadd -g 101 dba
$> useradd -u 514 -g dba -G root -d /usr/local/mysql mysqladmin
$> id mysqladmin

5. 创建 /etc/my.cnf

##root 用户   
$>cd /etc/   
$>touch my.cnf   
$>vi my.cnf  

```
[client] 
port = 3306
socket = /usr/local/mysql/data/mysql.sock

[mysqld] 
port = 3306
socket = /usr/local/mysql/data/mysql.sock

skip-external-locking 
key_buffer_size = 256M 
sort_buffer_size = 2M 
read_buffer_size = 2M 
read_rnd_buffer_size = 4M 
query_cache_size= 32M 
max_allowed_packet = 16M 
myisam_sort_buffer_size=128M 
tmp_table_size=32M

table_open_cache = 512 
thread_cache_size = 8 
wait_timeout = 86400
interactive_timeout = 86400 
max_connections = 600

# Try number of CPU's*2 for thread_concurrency 
thread_concurrency = 32

#isolation level and default engine 
default-storage-engine = INNODB 
transaction-isolation = READ-COMMITTED

server-id = 1
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
pid-file = /usr/local/mysql/data/hostname.pid


#open performance schema 
log-warnings 
sysdate-is-now

binlog_format = MIXED
log_bin_trust_function_creators=1
log-error = /usr/local/mysql/data/hostname.err 
log-bin=/usr/local/mysql/arch/mysql-bin
#other logs
#general_log =1
#general_log_file = /usr/local/mysql/data/general_log.err 
#slow_query_log=1 
#slow_query_log_file=/usr/local/mysql/data/slow_log.err

#for replication slave 
#log-slave-updates 
#sync_binlog = 1

#for innodb options
innodb_data_home_dir = /usr/local/mysql/data/ 
innodb_data_file_path = ibdata1:500M:autoextend 
innodb_log_group_home_dir = /usr/local/mysql/arch 
innodb_log_files_in_group = 2
innodb_log_file_size = 200M

innodb_buffer_pool_size = 1024M 
innodb_additional_mem_pool_size = 50M 
innodb_log_buffer_size = 16M

innodb_lock_wait_timeout = 100 
#innodb_thread_concurrency = 0 
innodb_flush_log_at_trx_commit = 1 
innodb_locks_unsafe_for_binlog=1

#innodb io features: add for mysql5.5.8 
performance_schema 
innodb_read_io_threads=4 
innodb-write-io-threads=4 
innodb-io-capacity=200
#purge threads change default(0) to 1 for purge 
innodb_purge_threads=1 
innodb_use_native_aio=on

#case-sensitive file names and separate tablespace 
innodb_file_per_table = 1 
lower_case_table_names=1

[mysqldump]
quick
max_allowed_packet = 16M

[mysql] 
no-auto-rehash

[mysqlhotcopy] 
nteractive-timeout

[myisamchk] 
key_buffer_size = 256M 
sort_buffer_size = 256M 
read_buffer = 2M 
write_buffer = 2M
```

1. chown 和 chmod 权限，并第一次安装

   ##root 用户
   $>chown mysqladmin:dba /etc/my.cnf.
   $>chmod 640 /etc/my.cnf
   $>ll my.cnf

   $>chown -R mysqladmin:dba /usr/local/mysql
   $>chmod -R 755 /usr/local/mysql
   $>su - mysqladmin
   $>pwd

   $>mkdir arch backup
   $>scripts/mysql_install_db.sh

   ##报错:
   ##缺少 libaio.so 包
   ##解决方法:安装 libaio.so 包 注意:在 root 用户下进行安装
   $>yum -y install libaio

7. 再次安装 ##mysqladmin 用户 ##安装命令: scripts/mysql_install_db.sh --user=mysqladmin --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data ##报错: $> exit
##root 用户
##安装 perl
$>yum -y install perl
##再次安装(切回 mysqladmin 用户):
scripts/mysql_install_db --user=mysqladmin --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data