因为根目录磁盘满了，我移动数据和软件造成mysql启动不了，查原因mysql.sock不在了-原创手记-慕课网

今天刚接手新项目的服务器，不知道以前谁搭建的

因为要备份数据库，但是发现空间不足

/根目录满的，然后我移动软件和文件

造成 mysql启动不了

root@localhost ~]# /data/mysql/bin/mysqldump --databases star -uroot -p123456 > /home/star.sql

mysqldump: Couldn't execute 'show fields from `c_help`': Got error 28 from storage engine (1030)

[root@localhost ~]# df -lh

Filesystem Size Used Avail Use% Mounted on

/dev/sda3 2.0G 2.0G 0 100% /

/dev/sda5 246G 29G 205G 13% /data

/dev/sda1 99M 12M 82M 13% /boot

tmpfs 7.9G 0 7.9G 0% /dev/shm

wKioL1Mvx6DQZB4sAADaQeuA0bk478.jpg

发现空间不足，也不知道谁搭建的服务器，坑死我了

root@localhost share]# mv * /data/ceshi/share/

[root@localhost share]# df -Th

Filesystem Type Size Used Avail Use% Mounted on

/dev/sda3 ext3 2.0G 1.5G 382M 80% /

/dev/sda5 ext3 246G 24G 209G 11% /data

/dev/sda1 ext3 99M 12M 82M 13% /boot

tmpfs tmpfs 7.9G 0 7.9G 0% /dev/shm

mysql.sock不在了

[root@localhost tmp]# locate mysql.sock

[root@localhost tmp]# /data/mysql/

bin/ data/ include/ lib/ libexec/ log/ mysql-test/ share/ sql-bench/

[root@localhost tmp]# /data/mysql/bin/mysql start

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

没有进程

[root@localhost tmp]# killall mysqld

mysqld: no process killed

[root@localhost tmp]# ps -aux | grep mysqld

Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.7/FAQ

root 22246 0.0 0.0 61196 720 pts/2 S+ 13:14 0:00 grep mysqld

[root@localhost tmp]# more /etc/my.cnf|grep sock

socket=/var/lib/mysql/mysql.sock

[root@localhost tmp]# cd /var/lib/mysql/mysql.s

太奇葩了这问题

查看报错日志

140104 3:00:02 [ERROR] /data/mysql/libexec/mysqld: Sort aborted

140105 3:00:02 [ERROR] /data/mysql/libexec/mysqld: Sort aborted

140106 3:00:01 [ERROR] /data/mysql/libexec/mysqld: Sort aborted

140107 3:00:01 [ERROR] /data/mysql/libexec/mysqld: Sort aborted

140324 12:09:26 [Note] /data/mysql/libexec/mysqld: Normal shutdown

140324 12:09:26 [Note] Slave I/O thread killed while reading event

140324 12:09:26 [Note] Slave I/O thread exiting, read up to log 'mysql-bin.000013', position 54495054

140324 12:09:26 [Note] Error reading relay log event: slave SQL thread was killed

140324 12:09:44 InnoDB: Starting shutdown...

140324 12:09:46 InnoDB: Shutdown completed; log sequence number 0 1573472989

140324 12:09:46 [Note] /data/mysql/libexec/mysqld: Shutdown complete

[root@localhost tmp]# ps -ef | grep mysqld

root 22330 20131 0 13:24 pts/2 00:00:00 grep mysqld

[root@localhost tmp]# ps -ef | grep mysql

root 22332 20131 0 13:24 pts/2 00:00:00 grep mysql

发现

[root@localhost mysql]# ./

bin/ data/ include/ lib/ libexec/ log/ mysql-test/ share/ sql-bench/

[root@localhost mysql]# ./bin/

comp_err mysqlbinlog mysql_find_rows mysqltestmanagerc

innochecksum mysqlbug mysql_fix_extensions mysqltestmanager-pwgen

msql2mysql mysqlcheck mysql_fix_privilege_tables mysql_tzinfo_to_sql

myisamchk mysql_client_test mysqlhotcopy mysql_upgrade

myisam_ftdump mysql_config mysqlimport mysql_upgrade_shell

myisamlog mysql_convert_table_format mysql_install_db mysql_waitpid

myisampack mysqld_multi mysql_secure_installation mysql_zap

my_print_defaults mysqld_safe mysql_setpermission perror

mysql mysqldump mysqlshow replace

mysqlaccess mysqldumpslow mysql_tableinfo resolveip

mysqladmin mysql_explain_log mysqltest resolve_stack_dump

[root@localhost mysql]# ./bin/mysqld_safe &

[1] 22367

[root@localhost mysql]# Starting mysqld daemon with databases from /data/mysql/data

[root@localhost mysql]# /data/mysql/bin/mysql -uroot -p123456

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 15

Server version: 5.0.88-log Source distribution

No entry for terminal type "xterm";

using dumb terminal settings.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> Ctrl-C -- exit!

Aborted

[root@localhost mysql]# cd /tmp/

.ICE-unix/ mysql.sock

[root@localhost mysql]# cd /tmp/

终于进去了

wKiom1MvxFvhMEOLAAL8j_S0MjM796.jpg

终于备份好了，为了以后不必要的麻烦，添加service管理

[root@localhost data]# cp /data/mysql/share/mysql/mysql.server /etc/init.d/mysql

[root@localhost data]# cd /etc/init.d/

[root@localhost init.d]# chkconfig --add mysql

[root@localhost init.d]# chkconfig mysql on

这样方便多了

[root@localhost init.d]# service mysql stop

MySQL manager or server PID file could not be found! [FAILED]

[root@localhost init.d]# service mysql start

Starting MySQL. [ OK ]

[root@localhost init.d]# /data/mysql/bin/mysql -uroot -p

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 21

Server version: 5.0.88-log Source distribution

No entry for terminal type "xterm";

using dumb terminal settings.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

wKiom1Mvx9ag8Yn-AAFs-U_671Y744.jpg

终于解决了！

服务器storageenginemysql数据库