linux安装mysql详细步骤

11、修改my.cnf文件

#vi /etc/my.cnf

将下面内容复制替换当前的my.cnf文件中的内容

[client]
no-beep
socket =/software/mysql/mysql.sock
# pipe
# socket=0.0
port=3306
[mysql]
default-character-set=utf8
[mysqld]
basedir=/software/mysql
datadir=/data/mysql
port=3306
pid-file=/software/mysql/mysqld.pid
#skip-grant-tables
skip-name-resolve
socket = /software/mysql/mysql.sock
character-set-server=utf8
default-storage-engine=INNODB
explicit_defaults_for_timestamp = true
# Server Id.
server-id=1
max_connections=2000
query_cache_size=0
table_open_cache=2000
tmp_table_size=246M
thread_cache_size=300
#限定用于每个数据库线程的栈大小。默认设置足以满足大多数应用
thread_stack = 192k
key_buffer_size=512M
read_buffer_size=4M
read_rnd_buffer_size=32M
innodb_data_home_dir = /data/mysql
innodb_flush_log_at_trx_commit=0
innodb_log_buffer_size=16M
innodb_buffer_pool_size=256M
innodb_log_file_size=128M
innodb_thread_concurrency=128
innodb_autoextend_increment=1000
innodb_buffer_pool_instances=8
innodb_concurrency_tickets=5000
innodb_old_blocks_time=1000
innodb_open_files=300
innodb_stats_on_metadata=0
innodb_file_per_table=1
innodb_checksum_algorithm=0
back_log=80
flush_time=0
join_buffer_size=128M
max_allowed_packet=1024M
max_connect_errors=2000
open_files_limit=4161
query_cache_type=0
sort_buffer_size=32M
table_definition_cache=1400
binlog_row_event_max_size=8K
sync_master_info=10000
sync_relay_log=10000
sync_relay_log_info=10000
#批量插入数据缓存大小，可以有效提高插入效率，默认为8M
bulk_insert_buffer_size = 64M
interactive_timeout = 120
wait_timeout = 120
log-bin-trust-function-creators=1
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

#
# include all files from the config directory
#
!includedir /etc/my.cnf.d

保存退出

12、启动mysql

#/etc/init.d/mysqld start

新版本的安装包会报错，错误内容如下：

Starting MySQL.Logging to '/data/mysql/SZY.err'.
2018-07-02T10:09:03.779928Z mysqld_safe The file /usr/local/mysql/bin/mysqld
does not exist or is not executable. Please cd to the mysql installation
directory and restart this script from there as follows:
./bin/mysqld_safe&
See http://dev.mysql.com/doc/mysql/en/mysqld-safe.html for more information
ERROR! The server quit without updating PID file (/software/mysql/mysqld.pid).

因为新版本的mysql安全启动安装包只认/usr/local/mysql这个路径。

解决办法：

方法1、建立软连接

例 #cd /usr/local/mysql

#ln -s /sofware/mysql/bin/myslqd mysqld

方法2、修改mysqld_safe文件（有强迫症的同学建议这种，我用的这种）

# vim /software/mysql/bin/mysqld_safe

将所有的/usr/local/mysql改为/software/mysql

保存退出。（可以将这个文件拷出来再修改然后替换）

13、登录mysql

#/software/mysql/bin/mysql -u root –p

14、输入临时密码。临时密码就是第8条root@localhost:后面的内容

15、修改mysql的登录密码

>mysql   set password=password('root');

>mysql  grant all privileges on *.* to root@'%' identified by 'root';

>mysql flush privileges;

16、完成，此时mysql的登录名root  登录密码root

   <div class="feedbackItem"><div class="feedbackListSubtitle"><div class="feedbackManage">&nbsp;&nbsp;<span class="comment_actions"></span></div><a href="#3934736" class="layer">#1楼</a><a name="3934736" id="comment_anchor_3934736"></a>  <span class="comment_date">2018-03-27 13:49</span> <a id="a_comment_author_3934736" href="https://www.cnblogs.com/mr-wuxiansheng/" target="_blank">Mr_伍先生</a> <a href="http://msg.cnblogs.com/send/Mr_%E4%BC%8D%E5%85%88%E7%94%9F" title="发送站内短消息" class="sendMsg2This">&nbsp;</a></div><div class="feedbackCon"><div id="comment_body_3934736" class="blog_comment_body">按照你的步骤执行到第13步之后，没有跳出输入密码，提示错误<br><br> ERROR 1045 (28000): Access denied for user 'root'@'localhost'<br><br><br>期待你的回复。。。</div><div class="comment_vote"><a href="javascript:void(0);" class="comment_digg" onclick="return voteComment(3934736,'Digg',this)">支持(1)</a><a href="javascript:void(0);" class="comment_bury" onclick="return voteComment(3934736,'Bury',this)">反对(0)</a></div><span id="comment_3934736_avatar" style="display:none;">http://pic.cnblogs.com/face/1036837/20170514101520.png</span></div></div><div class="feedbackItem"><div class="feedbackListSubtitle"><div class="feedbackManage">&nbsp;&nbsp;<span class="comment_actions"></span></div><a href="#4010976" class="layer">#2楼</a><a name="4010976" id="comment_anchor_4010976"></a>[<span class="louzhu">楼主</span>]  <span class="comment_date">2018-07-02 18:48</span> <a id="a_comment_author_4010976" href="https://www.cnblogs.com/shizhongyang/" target="_blank">如若千夫所指</a> <a href="http://msg.cnblogs.com/send/%E5%A6%82%E8%8B%A5%E5%8D%83%E5%A4%AB%E6%89%80%E6%8C%87" title="发送站内短消息" class="sendMsg2This">&nbsp;</a></div><div class="feedbackCon"><div id="comment_body_4010976" class="blog_comment_body"><a href="#3934736" title="查看所回复的评论" onclick="commentManager.renderComments(0,50,3934736);">@</a>

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