Centos6.6安装mysql记录

Posted 2020-10-13 灬魑魅魍魉灬

一、环境介绍：

系统：Cerntos6.6

mysql版本：mysql-5.6.34

二、安装操作：

1、卸载旧版本：

rpm -qa |grep mysql
mysql-server-5.1.73-8.el6_8.x86_64
mysql-libs-5.1.73-8.el6_8.x86_64 
mysql-5.1.73-8.el6_8.x86_64
删除/etc/my.cnf:
rm -f /etc/my.cnf
rpm -e mysql-libs-5.1.73-8.el6_8.x86_64 mysql-5.1.73-8.el6_8.x86_64  --nodeps     #强制删除

注：在CentOS 6.4版操作系统最小安装完成后，默认会在/etc目录下存在一个my.cnf，需要将此文件更名为其他的名字，如：/etc/my.cnf.bak，否则，该文件会干扰源码安装的MySQL的正确配置，造成无法启动。
在使用"yum update"更新系统后，需要检查下/etc目录下是否会多出一个my.cnf，如果多出，将它重命名成别的。否则，MySQL将使用这个配置文件启动，可能造成无法正常启动等问题。

 2、安装依赖包：

yum -y install make gcc-c++ cmake bison-devel ncurses-devel
groupadd mysql    #有用户的话删除就行  userdel mysql
useradd -g mysql mysql -M -s /sbin/nologin

3、下载MySQL，源码编译安装：

cd /usr/local/src
下载安装包：
百度云盘链接：http://pan.baidu.com/s/1hs8awRU    密码：ly4d
tar -zxvf mysql-5.6.34.tar.gz
cd mysql-5.6.34/
cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DMYSQL_DATADIR=/data/mysql/data -DSYSCONFDIR=/etc -DWITH_MYISAM_STORAGE_ENGINE=1 -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_MEMORY_STORAGE_ENGINE=1 -DWITH_READLINE=1 -DMYSQL_UNIX_ADDR=/var/lib/mysql/mysql.sock -DMYSQL_TCP_PORT=3306 -DENABLED_LOCAL_INFILE=1 -DWITH_PARTITION_STORAGE_ENGINE=1 -DEXTRA_CHARSETS=all -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci
make && make install

4、配置MySQL：

修改/usr/local/mysql权限
mkdir -p /data/mysql/data
chown -R mysql:mysql /usr/local/mysql
chown -R mysql:mysql /data/mysql/data
 
执行初始化配置脚本，创建系统自带的数据库和表
cd /usr/local/mysql
./scripts/mysql_install_db --basedir=/usr/local/mysql --datadir=/data/mysql/data --user=mysql #如果后续不小心删除了这个数据目录或这个目录下的文件被误操作删除了，可以利用这个命令重新初始化。
cp support-files/mysql.server /etc/init.d/mysql
chkconfig mysql on
service mysql start   //启动前，要先配置my.cnf文件（如下）， 并确保/data/mysql/data和/usr/local/mysql的mysql权限

[client]
port = 3306
socket = /usr/local/mysql/var/mysql.sock
 
[mysqld]
port = 3306
socket = /usr/local/mysql/var/mysql.sock
 
basedir = /usr/local/mysql/
datadir = /data/mysql/data
pid-file = /data/mysql/data/mysql.pid
user = mysql
bind-address = 0.0.0.0
server-id = 1
sync_binlog=1
log_bin = mysql-bin
 
skip-name-resolve
 
back_log = 600
 
max_connections = 3000
max_connect_errors = 3000
 
table_open_cache = 512
max_allowed_packet = 16M
binlog_cache_size = 16M
max_heap_table_size = 16M
tmp_table_size = 256M
 
read_buffer_size = 1024M
read_rnd_buffer_size = 1024M
sort_buffer_size = 1024M
join_buffer_size = 1024M
key_buffer_size = 8192M
 
thread_cache_size = 8
 
query_cache_size = 512M
query_cache_limit = 1024M
 
ft_min_word_len = 4
 
binlog_format = mixed
expire_logs_days = 30
 
log_error = /data/mysql/data/mysql-error.log
slow_query_log = 1
long_query_time = 1
slow_query_log_file = /data/mysql/data/mysql-slow.log
 
performance_schema = 0
explicit_defaults_for_timestamp
 
skip-external-locking
 
default_storage_engine = InnoDB
innodb_file_per_table = 1
innodb_open_files = 500
innodb_buffer_pool_size = 1024M
innodb_write_io_threads = 1000
innodb_read_io_threads = 1000
innodb_thread_concurrency = 8
innodb_purge_threads = 1
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 4M
innodb_log_file_size = 32M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
 
bulk_insert_buffer_size = 8M
myisam_sort_buffer_size = 8M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1
 
interactive_timeout = 28800
wait_timeout = 28800
 
[mysqldump]
quick
max_allowed_packet = 16M
 
[myisamchk]
key_buffer_size = 8M
sort_buffer_size = 8M
read_buffer = 4M
write_buffer = 4M
 
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
port = 3306

my.cnf

启动报错的话：

[[email protected] mysql]# ERROR 2002 (HY000): Can‘t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock‘ (111)
登录报以上错误的话，删除/var/lib/mysql/mysql.sock这个文件：
rm -f /var/lib/mysql/mysql.sock
ln -s /usr/local/mysql/var/mysql.sock /var/lib/mysql/mysql.sock