宝塔面板数据库自动停止的解决方案

蓝逸轩 • • 技术教程 • 6078 阅读

最近因为服务器重装了系统，Linux不太熟悉，所以建站环境就用了宝塔面板搭建的！刚搭建好的时候，感觉一切都是比较正常的，发布访问都没有问题。但突然后台登录不上，提示数据库连接错误，刚开始以为是数据库配置文件有问题，检查一切正常，登陆控制面板，发现是数据库停止，重启后网站访问一切正常！

本来以为事情就这样过去了，但是第二天访问，又出现同样的问题，在网上搜索相关问题，有人说是内存太小了，但是作为一个小站，现在的配置已经是很好了，经过一番折腾后，我想到了一个办法，内存的问题我不能解决，那就在数据库方面下文章，写Shell脚本，只要数据库停止就自动重启。

编辑完成后，直接把数据库关闭，等待完执行间隔时间后，数据库自动重启了，网站访问正常，到此，宝塔面板建站数据库突然停止的问题就解决了，自动重启数据库！其实这也是没有技术的方法了！

附上宝塔面板建站数据库自动重启shell脚本内容：

#!/bin/bash PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin export PATH pgrep -x mysqld /dev/null if [ $? -ne 0 ] echo At time:$(date) :MySQL is stop . /var/log/mysql_messages service mysqld start fi

或者

#!/bin/bash
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
export PATH

Mysql_Check(){
    if [ ! -f "/www/server/mysql/bin/mysql" ]; then
        echo "此服务器并没有安装宝塔mysql！"
        exit;
    fi

    ps -ef |grep /www/server/mysql |grep -v grep  > null
    if [ $? -ne 1 ]; then
        echo "mysql is running! exit;"
        exit;
    fi
}
#硬盘检测
Disk_Check(){
    DiskFree=`df -h | awk ' /\// {print $5, $6 "DiskCheck"}' | awk '/\/wwwDiskCheck/ {print $1}'`
    DiskInodes=`df -i | awk '/\/www/ {print $5, $6 "diskTest"}' |awk '/\/wwwdiskTest/ {print $1}'`
    MysqlBinDisk=`du -s /www/server/data/mysql-bin.* | awk '{size = size + $1} END {print size}'`
    MysqlDataDisk=`df /www/server/data | awk 'NR==2 {printf ("%.0f", $2/10)}'`

    if [ "${DiskFree}" == "100%" ] && [ "${MysqlBinDisk}" -gt "${MysqlDataDisk}" ]; then
        read -p "检测到可能因mysql日志导致磁盘占满，需要清理mysql日志尝试启动吗？(y/n):" clear
        if [ "${clear}" = "y" ]; then
            rm -f /www/server/data/mysql-bin.*
            rm -f /www/server/data/ib_*
            sleep 2
            /etc/init.d/mysqld start
            exit;   
        fi    
    fi

    if [ "${DiskFree}" == "100%" ]; then
        df -h
        echo -e "============================================================"
        echo -e "磁盘已满导致Mysql无法正常启动"
        echo -e "你可以输入以下命令清除后启动mysql"
        echo -e "清空回收站->>\033[31mrm -rf /www/Recycle_bin/*\033[0m"
        echo -e "清理系统垃圾及网站日志->>\033[31mpython /www/server/panel/tools.py clear\033[0m"
        echo -e "启动mysql->>\033[31m/etc/init.d/mysqld start\033[0m"
        exit;
    fi

    if [ "${DiskInodes}" == "100%" ]; then
        df -i
        echo -e "============================================================"
        echo -e "磁盘inodes已满导致Mysql无法正常启动"
        echo -e "你可以输入以下命令尝试清除后启动mysql"
        echo -e "清理系统垃圾及网站日志->>\033[31mpython /www/server/panel/tools.py clear\033[0m"
        echo -e "启动mysql->>\033[31m/etc/init.d/mysqld start\033[0m"
        exit;
    fi
}

#根据机器配置调整配置文件
MySQL_Opt()
{
  MemTotal=`free -m | grep Mem | awk '{print  $2}'`
    if [[ ${MemTotal} -gt 1024 && ${MemTotal} -lt 2048 ]]; then
        sed -i "s#^key_buffer_size.*#key_buffer_size = 32M#" /etc/my.cnf
        sed -i "s#^table_open_cache.*#table_open_cache = 128#" /etc/my.cnf
        sed -i "s#^sort_buffer_size.*#sort_buffer_size = 768K#" /etc/my.cnf
        sed -i "s#^read_buffer_size.*#read_buffer_size = 768K#" /etc/my.cnf
        sed -i "s#^myisam_sort_buffer_size.*#myisam_sort_buffer_size = 8M#" /etc/my.cnf
        sed -i "s#^thread_cache_size.*#thread_cache_size = 16#" /etc/my.cnf
        sed -i "s#^query_cache_size.*#query_cache_size = 16M#" /etc/my.cnf
        sed -i "s#^tmp_table_size.*#tmp_table_size = 32M#" /etc/my.cnf
        sed -i "s#^innodb_buffer_pool_size.*#innodb_buffer_pool_size = 128M#" /etc/my.cnf
        sed -i "s#^innodb_log_file_size.*#innodb_log_file_size = 32M#" /etc/my.cnf
    elif [[ ${MemTotal} -ge 2048 && ${MemTotal} -lt 4096 ]]; then
        sed -i "s#^key_buffer_size.*#key_buffer_size = 64M#" /etc/my.cnf
        sed -i "s#^table_open_cache.*#table_open_cache = 256#" /etc/my.cnf
        sed -i "s#^sort_buffer_size.*#sort_buffer_size = 1M#" /etc/my.cnf
        sed -i "s#^read_buffer_size.*#read_buffer_size = 1M#" /etc/my.cnf
        sed -i "s#^myisam_sort_buffer_size.*#myisam_sort_buffer_size = 16M#" /etc/my.cnf
        sed -i "s#^thread_cache_size.*#thread_cache_size = 32#" /etc/my.cnf
        sed -i "s#^query_cache_size.*#query_cache_size = 32M#" /etc/my.cnf
        sed -i "s#^tmp_table_size.*#tmp_table_size = 64M#" /etc/my.cnf
        sed -i "s#^innodb_buffer_pool_size.*#innodb_buffer_pool_size = 256M#" /etc/my.cnf
        sed -i "s#^innodb_log_file_size.*#innodb_log_file_size = 64M#" /etc/my.cnf
    elif [[ ${MemTotal} -ge 4096 && ${MemTotal} -lt 8192 ]]; then
        sed -i "s#^key_buffer_size.*#key_buffer_size = 128M#" /etc/my.cnf
        sed -i "s#^table_open_cache.*#table_open_cache = 512#" /etc/my.cnf
        sed -i "s#^sort_buffer_size.*#sort_buffer_size = 2M#" /etc/my.cnf
        sed -i "s#^read_buffer_size.*#read_buffer_size = 2M#" /etc/my.cnf
        sed -i "s#^myisam_sort_buffer_size.*#myisam_sort_buffer_size = 32M#" /etc/my.cnf
        sed -i "s#^thread_cache_size.*#thread_cache_size = 64#" /etc/my.cnf
        sed -i "s#^query_cache_size.*#query_cache_size = 64M#" /etc/my.cnf
        sed -i "s#^tmp_table_size.*#tmp_table_size = 64M#" /etc/my.cnf
        sed -i "s#^innodb_buffer_pool_size.*#innodb_buffer_pool_size = 512M#" /etc/my.cnf
        sed -i "s#^innodb_log_file_size.*#innodb_log_file_size = 128M#" /etc/my.cnf
    elif [[ ${MemTotal} -ge 8192 && ${MemTotal} -lt 16384 ]]; then
        sed -i "s#^key_buffer_size.*#key_buffer_size = 256M#" /etc/my.cnf
        sed -i "s#^table_open_cache.*#table_open_cache = 1024#" /etc/my.cnf
        sed -i "s#^sort_buffer_size.*#sort_buffer_size = 4M#" /etc/my.cnf
        sed -i "s#^read_buffer_size.*#read_buffer_size = 4M#" /etc/my.cnf
        sed -i "s#^myisam_sort_buffer_size.*#myisam_sort_buffer_size = 64M#" /etc/my.cnf
        sed -i "s#^thread_cache_size.*#thread_cache_size = 128#" /etc/my.cnf
        sed -i "s#^query_cache_size.*#query_cache_size = 128M#" /etc/my.cnf
        sed -i "s#^tmp_table_size.*#tmp_table_size = 128M#" /etc/my.cnf
        sed -i "s#^innodb_buffer_pool_size.*#innodb_buffer_pool_size = 1024M#" /etc/my.cnf
        sed -i "s#^innodb_log_file_size.*#innodb_log_file_size = 256M#" /etc/my.cnf
    elif [[ ${MemTotal} -ge 16384 && ${MemTotal} -lt 32768 ]]; then
        sed -i "s#^key_buffer_size.*#key_buffer_size = 512M#" /etc/my.cnf
        sed -i "s#^table_open_cache.*#table_open_cache = 2048#" /etc/my.cnf
        sed -i "s#^sort_buffer_size.*#sort_buffer_size = 8M#" /etc/my.cnf
        sed -i "s#^read_buffer_size.*#read_buffer_size = 8M#" /etc/my.cnf
        sed -i "s#^myisam_sort_buffer_size.*#myisam_sort_buffer_size = 128M#" /etc/my.cnf
        sed -i "s#^thread_cache_size.*#thread_cache_size = 256#" /etc/my.cnf
        sed -i "s#^query_cache_size.*#query_cache_size = 256M#" /etc/my.cnf
        sed -i "s#^tmp_table_size.*#tmp_table_size = 256M#" /etc/my.cnf
        sed -i "s#^innodb_buffer_pool_size.*#innodb_buffer_pool_size = 2048M#" /etc/my.cnf
        sed -i "s#^innodb_log_file_size.*#innodb_log_file_size = 512M#" /etc/my.cnf
    elif [[ ${MemTotal} -ge 32768 ]]; then
        sed -i "s#^key_buffer_size.*#key_buffer_size = 1024M#" /etc/my.cnf
        sed -i "s#^table_open_cache.*#table_open_cache = 4096#" /etc/my.cnf
        sed -i "s#^sort_buffer_size.*#sort_buffer_size = 16M#" /etc/my.cnf
        sed -i "s#^read_buffer_size.*#read_buffer_size = 16M#" /etc/my.cnf
        sed -i "s#^myisam_sort_buffer_size.*#myisam_sort_buffer_size = 256M#" /etc/my.cnf
        sed -i "s#^thread_cache_size.*#thread_cache_size = 512#" /etc/my.cnf
        sed -i "s#^query_cache_size.*#query_cache_size = 512M#" /etc/my.cnf
        sed -i "s#^tmp_table_size.*#tmp_table_size = 512M#" /etc/my.cnf
        sed -i "s#^innodb_buffer_pool_size.*#innodb_buffer_pool_size = 4096M#" /etc/my.cnf
        sed -i "s#^innodb_log_file_size.*#innodb_log_file_size = 1024M#" /etc/my.cnf
    fi
}

#修复配置文件
Mycnf_repair(){
  Setup_Path=/www/server/mysql
  Data_Path=/www/server/data
  mysql_version=`cat /www/server/mysql/version.pl`
  if [[ "${mysql_version}" =~ mariadb ]]; then
  cat > /etc/my.cnf<<EOF
[client]
#password	= your_password
port		= 3306
socket		= /tmp/mysql.sock

[mysqld]
port		= 3306
socket		= /tmp/mysql.sock
user    = mysql
datadir = ${Data_Path}
basedir = ${Setup_Path}
log_error = ${Data_Path}/mariadb.err
#pid-file = ${Data_Path}/mariadb.pid
default_storage_engine = MyISAM
#skip-external-locking
#loose-skip-innodb
key_buffer_size = 16M
max_allowed_packet = 100G
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
thread_cache_size = 8
query_cache_size = 8M
tmp_table_size = 16M
sql-mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

#skip-networking
#skip-name-resolve
max_connections = 500
max_connect_errors = 100
open_files_limit = 65535

log-bin=mysql-bin
binlog_format=mixed
server-id	= 1
expire_logs_days = 10

default_storage_engine = InnoDB
innodb_data_home_dir = ${Data_Path}
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = ${Data_Path}
innodb_buffer_pool_size = 16M
innodb_additional_mem_pool_size = 2M
innodb_log_file_size = 5M
innodb_log_buffer_size = 8M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout
EOF
  elif [[ "${mysql_version}" =~ AliSQL ]]; then
    	cat > /etc/my.cnf<<EOF
[client]
sdafds
#password   = your_password
port        = 3306
socket      = /tmp/mysql.sock

[mysqld]
port        = 3306
socket      = /tmp/mysql.sock
datadir = ${Data_Path}
skip-external-locking
performance_schema_max_table_instances=400
table_definition_cache=400
table_open_cache=32
key_buffer_size = 4M
max_allowed_packet = 100G
table_open_cache = 32
sort_buffer_size = 256K
net_buffer_length = 8K
read_buffer_size = 128K
read_rnd_buffer_size = 256K
myisam_sort_buffer_size = 4M
thread_cache_size = 4
query_cache_size = 4M
tmp_table_size = 8M

explicit_defaults_for_timestamp = true

#skip-networking
#skip-name-resolve
max_connections = 500
max_connect_errors = 100
open_files_limit = 65535
sql-mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

log-bin=mysql-bin
binlog_format=mixed
server-id   = 1
expire_logs_days = 10

#loose-innodb-trx=0
#loose-innodb-locks=0
#loose-innodb-lock-waits=0
#loose-innodb-cmp=0
#loose-innodb-cmp-per-index=0
#loose-innodb-cmp-per-index-reset=0
#loose-innodb-cmp-reset=0
#loose-innodb-cmpmem=0
#loose-innodb-cmpmem-reset=0
#loose-innodb-buffer-page=0
#loose-innodb-buffer-page-lru=0
#loose-innodb-buffer-pool-stats=0
#loose-innodb-metrics=0
#loose-innodb-ft-default-stopword=0
#loose-innodb-ft-inserted=0
#loose-innodb-ft-deleted=0
#loose-innodb-ft-being-deleted=0
#loose-innodb-ft-config=0
#loose-innodb-ft-index-cache=0
#loose-innodb-ft-index-table=0
#loose-innodb-sys-tables=0
#loose-innodb-sys-tablestats=0
#loose-innodb-sys-indexes=0
#loose-innodb-sys-columns=0
#loose-innodb-sys-fields=0
#loose-innodb-sys-foreign=0
#loose-innodb-sys-foreign-cols=0

default_storage_engine = InnoDB
innodb_data_home_dir = ${Data_Path}
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = ${Data_Path}
innodb_buffer_pool_size = 16M
innodb_log_file_size = 5M
innodb_log_buffer_size = 8M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout
EOF
  elif [[ "${mysql_version}" =~ 5.1 ]]; then
    cat > /etc/my.cnf<<EOF
[client]
#password	= your_password
port		= 3306
socket		= /tmp/mysql.sock

[mysqld]
port		= 3306
socket		= /tmp/mysql.sock
datadir = ${Data_Path}
default_storage_engine = MyISAM
#skip-external-locking
#loose-skip-innodb
key_buffer_size = 8M
max_allowed_packet = 100G
table_open_cache = 32
sort_buffer_size = 256K
net_buffer_length = 4K
read_buffer_size = 128K
read_rnd_buffer_size = 256K
myisam_sort_buffer_size = 4M
thread_cache_size = 4
query_cache_size = 4M
tmp_table_size = 8M

#skip-networking
#skip-name-resolve
max_connections = 500
max_connect_errors = 100
open_files_limit = 65535

log-bin=mysql-bin
binlog_format=mixed
server-id	= 1
expire_logs_days = 10

innodb_data_home_dir = ${Data_Path}
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = ${Data_Path}
innodb_buffer_pool_size = 16M
innodb_additional_mem_pool_size = 2M
innodb_log_file_size = 5M
innodb_log_buffer_size = 8M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout
EOF
  elif [[ "${mysql_version}" =~ 5.5 ]]; then
    	cat > /etc/my.cnf<<EOF
[client]
#password   = your_password
port        = 3306
socket      = /tmp/mysql.sock

[mysqld]
port        = 3306
socket      = /tmp/mysql.sock
datadir = ${Data_Path}
default_storage_engine = MyISAM
#skip-external-locking
#loose-skip-innodb
key_buffer_size = 8M
max_allowed_packet = 100G
table_open_cache = 32
sort_buffer_size = 256K
net_buffer_length = 4K
read_buffer_size = 128K
read_rnd_buffer_size = 256K
myisam_sort_buffer_size = 4M
thread_cache_size = 4
query_cache_size = 4M
tmp_table_size = 8M

#skip-networking
#skip-name-resolve
max_connections = 500
max_connect_errors = 100
open_files_limit = 65535

log-bin=mysql-bin
binlog_format=mixed
server-id   = 1
expire_logs_days = 10

default_storage_engine = InnoDB
innodb_data_home_dir = ${Data_Path}
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = ${Data_Path}
innodb_buffer_pool_size = 16M
innodb_additional_mem_pool_size = 2M
innodb_log_file_size = 5M
innodb_log_buffer_size = 8M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout
EOF
  elif [[ "${mysql_version}" =~ 5.6 ]]; then
    	cat > /etc/my.cnf<<EOF
[client]
#password   = your_password
port        = 3306
socket      = /tmp/mysql.sock

[mysqld]
port        = 3306
socket      = /tmp/mysql.sock
datadir = ${Data_Path}
skip-external-locking
performance_schema_max_table_instances=400
table_definition_cache=400
table_open_cache=32
key_buffer_size = 8M
max_allowed_packet = 100G
table_open_cache = 32
sort_buffer_size = 256K
net_buffer_length = 8K
read_buffer_size = 128K
read_rnd_buffer_size = 256K
myisam_sort_buffer_size = 4M
thread_cache_size = 4
query_cache_size = 4M
tmp_table_size = 8M

explicit_defaults_for_timestamp = true
#skip-networking
#skip-name-resolve
max_connections = 500
max_connect_errors = 100
open_files_limit = 65535
sql-mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

log-bin=mysql-bin
binlog_format=mixed
server-id   = 1
expire_logs_days = 10

#loose-innodb-trx=0
#loose-innodb-locks=0
#loose-innodb-lock-waits=0
#loose-innodb-cmp=0
#loose-innodb-cmp-per-index=0
#loose-innodb-cmp-per-index-reset=0
#loose-innodb-cmp-reset=0
#loose-innodb-cmpmem=0
#loose-innodb-cmpmem-reset=0
#loose-innodb-buffer-page=0
#loose-innodb-buffer-page-lru=0
#loose-innodb-buffer-pool-stats=0
#loose-innodb-metrics=0
#loose-innodb-ft-default-stopword=0
#loose-innodb-ft-inserted=0
#loose-innodb-ft-deleted=0
#loose-innodb-ft-being-deleted=0
#loose-innodb-ft-config=0
#loose-innodb-ft-index-cache=0
#loose-innodb-ft-index-table=0
#loose-innodb-sys-tables=0
#loose-innodb-sys-tablestats=0
#loose-innodb-sys-indexes=0
#loose-innodb-sys-columns=0
#loose-innodb-sys-fields=0
#loose-innodb-sys-foreign=0
#loose-innodb-sys-foreign-cols=0

default_storage_engine = InnoDB
innodb_data_home_dir = ${Data_Path}
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = ${Data_Path}
innodb_buffer_pool_size = 16M
innodb_log_file_size = 5M
innodb_log_buffer_size = 8M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout
EOF
  elif [[ "${mysql_version}" =~ 5.7 ]]; then
    	cat > /etc/my.cnf<<EOF
[client]
#password   = your_password
port        = 3306
socket      = /tmp/mysql.sock

[mysqld]
port        = 3306
socket      = /tmp/mysql.sock
datadir = ${Data_Path}
skip-external-locking
performance_schema_max_table_instances=400
table_definition_cache=400
table_open_cache=256
key_buffer_size = 16M
max_allowed_packet = 100G
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
thread_cache_size = 8
query_cache_size = 8M
tmp_table_size = 16M
sql-mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

explicit_defaults_for_timestamp = true
#skip-networking
max_connections = 500
max_connect_errors = 100
open_files_limit = 65535

log-bin=mysql-bin
binlog_format=mixed
server-id   = 1
expire_logs_days = 10
early-plugin-load = ""

#loose-innodb-trx=0
#loose-innodb-locks=0
#loose-innodb-lock-waits=0
#loose-innodb-cmp=0
#loose-innodb-cmp-per-index=0
#loose-innodb-cmp-per-index-reset=0
#loose-innodb-cmp-reset=0
#loose-innodb-cmpmem=0
#loose-innodb-cmpmem-reset=0
#loose-innodb-buffer-page=0
#loose-innodb-buffer-page-lru=0
#loose-innodb-buffer-pool-stats=0
#loose-innodb-metrics=0
#loose-innodb-ft-default-stopword=0
#loose-innodb-ft-inserted=0
#loose-innodb-ft-deleted=0
#loose-innodb-ft-being-deleted=0
#loose-innodb-ft-config=0
#loose-innodb-ft-index-cache=0
#loose-innodb-ft-index-table=0
#loose-innodb-sys-tables=0
#loose-innodb-sys-tablestats=0
#loose-innodb-sys-indexes=0
#loose-innodb-sys-columns=0
#loose-innodb-sys-fields=0
#loose-innodb-sys-foreign=0
#loose-innodb-sys-foreign-cols=0

default_storage_engine = InnoDB
innodb_data_home_dir = ${Data_Path}
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = ${Data_Path}
innodb_buffer_pool_size = 16M
innodb_log_file_size = 5M
innodb_log_buffer_size = 8M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout
EOF
  fi
  MySQL_Opt
}
#设置权限
Set_permission()
{
  chown -R mysql:mysql /www/server/data
  chown -R mysql:mysql /www/server/mysql
    chmod 777 /tmp	
}
#清除二进制日志
logs_clear(){
    if [ ! -d "/www/server/data/logBackup" ]; then
        mkdir -p /www/server/data/logBackup
        mv /www/server/data/mysql-bin.* /www/server/data/logBackup
        mv /www/server/data/ib_* /www/server/data/logBackup
    fi
}
Mysql_Check
Disk_Check
myCnf=`cat /etc/my.cnf`
if [ ! -f "/etc/my.cnf" ]; then
  Mycnf_repair
else
    mv /etc/my.cnf /etc/my.cnf.backup
    Mycnf_repair
fi
/etc/init.d/mysqld stop
if [ -f "/tmp/mysql.sock" ]; then
    rm -f /tmp/mysql.sock
fi
Set_permission
logs_clear
/etc/init.d/mysqld start
sleep 3


ps -fe|grep mysql |grep -v grep
if [ $? -ne 0 ]; then
    echo "=========================================================================================="
    cat /www/server/data/*.err | grep ERROR
    echo "=========================================================================================="
    echo "mysql start error."
    echo "mysql无法正常启动，请将以上错误信息截图发至论坛寻求帮助"
else
    echo "=========================================================================================="
    echo "mysql is running"
fi
rm -f sql-repair.sh

 

或进入ssh 输入以下命令进行修复

wget -O sql-repair.sh http://download.bt.cn/install/sql-repair.sh && sh sql-repair.sh

注：1.此修复工具只适用于没更改过mysql存储目录所使用
2.此修复工具会替换mysql配置文件（重命名为/etc/my.cnf.backup）

修复说明：
1.检测数据库配置文件是否存在或完整然后进行修复
2.检查mysql目录用户所属及权限
3.检查tmp目录权限
4.清理二进制日志（会备份至/www/server/data/logBackup）
5.释放内存确保能正常启用mysql

若修复成功会提醒mysql正常运行

版权声明：
作者：蓝逸轩
链接：https://www.12xf.cn/113.html
来源：星锋网
文章版权归作者所有，未经允许请勿转载。

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