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

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

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

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

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.

终于解决了！

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