1、啟動錯誤日誌:
在不同的情況下,錯誤日誌會記錄在不同的位置,如果沒有配置檔案指定檔名,則預設為hostname.err
在mysql5.6的rpm發布的方式中,錯誤日誌被放在/var/log/mysqld.log
可以通過my.cnf檔案進行配置
[mysqld_safe]
log-error=/var/log/mysqld.log
2、檢視錯誤日誌:
mysql錯誤日誌以文字形式存放的
[root@localhost run]# echo > /var/log/mysqld.log 清空mysqld日誌檔案
[root@localhost run]# cat /var/log/mysqld.log
[root@localhost run]#service myql stop --停止mysql服務
[root@localhost run]# mysqld_safe --skip-grant-tables & 跳過授權進入mysql
[1] 3221
[root@localhost run]# 160328 09:39:08 mysqld_safe logging to '/var/log/mysqld.log'.
160328 09:39:08 mysqld_safe starting mysqld daemon with databases from /var/lib/mysql
160328 09:39:09 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
[1]+ done mysqld_safe --skip-grant-tables
[root@localhost run]#
3、檢視錯誤日誌:
[root@localhost run]# tail /var/log/mysqld.log
2016-03-28 09:39:09 3398 [error] /usr/local/mysql/bin/mysqld: can't create/write to file '/var/run/mysqld/mysqld.pid' (errcode: 2- no such file or directory)
2016-03-28 09:39:09 3398 [error] can't start server: can't create pid file: no such file or directory
160328 09:39:09 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
[root@localhost run]# perror 2 --檢視錯誤**
os error code 2: no such file or directory/
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