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源码安装MySQL5.6.39后，修改配置文件启动报错

2018年07月24日  | 移动技术网IT编程  | 我要评论

环境：CentOS6.4+MySQL5.6.39

Case复现：

         源码安装MySQL5.6.39，不修改配置文件初始化后启动mysql，此时服务正常启动且已产生配置文件/etc/my.cnf，但配置文件中参数项很少，手动修改/etc/my.cnf文件如下：

[client]

#password       = your_password

port            = 3306

socket          = /opt/mysql/databases/mysql.sock

[mysqld]

port            = 3306

socket          = /opt/mysql/databases/mysql.sock

skip-external-locking

skip_name_resolve

key_buffer_size = 32M

max_allowed_packet = 32M

table_open_cache = 1024

sort_buffer_size = 4M

read_buffer_size = 8M

read_rnd_buffer_size = 4M

myisam_sort_buffer_size = 64M

bulk_insert_buffer_size = 64M

tmp_table_size = 32M

max_heap_table_size = 32M

thread_cache_size = 1000

query_cache_size = 0

query_cache_type = 0

max_connections=1000

max_connect_errors = 1000000

sync_binlog = 100

long_query_time = 2

slow_query_log_file = /opt/mysql/databases/mysql-slow_3306.log  #该参数与5.5版本有区别

datadir = /opt/mysql/databases

log_error=/opt/mysql/databases/error.log

pid-file=/opt/mysql/databases/mysql.pid

log-bin=mysql-bin

binlog_format=rows

server-id       = 1

innodb_write_io_threads = 8

innodb_read_io_threads = 8

innodb_open_files = 65535

innodb_flush_method = O_DIRECT

innodb_max_dirty_pages_pct=50

innodb_file_per_table = 1

innodb_flush_log_at_trx_commit=2

innodb_log_buffer_size = 32M

innodb_log_files_in_group = 2

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

然后重新启动mysql服务报错： ERROR! The server quit without updating PID file (/opt/mysql/databases/mysql.pid). 但mysql错误日志却没有记录任何错误信息。

 

解决办法：重新初始化mysql

cd /opt/mysql/scripts

./mysql_install_db  --user=mysql --basedir=/opt/mysql --datadir=/opt/mysql/databases/

重启mysql服务，启动成功。

 

 

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