1，使用mysqldump時報錯(1064)，這個是因為mysqldump版本太低與當前資料庫版本不一致導致的。
mysqldump: Couldn't execute 'SET OPTION SQL_QUOTE_SHOW_CREATE=1': You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near 'OPTION SQL_QUOTE_SHOW_CREATE=1' at line 1 (1064)
[root@bastion-IDC ~]# mysqldump --version
mysqldump Ver 10.13 Distrib 5.1.61, for redhat-linux-gnu (x86_64)
[root@bastion-IDC ~]# mysql //或者登陸mysql，select version();也可檢視版本
Server version: 5.6.25-log Source distribution
.........
這樣的話必須知道mysqldump的絕對路徑，在mysql的安裝目錄下有。
2，匯出時指定字符集，報錯
Character set 'utf-8' is not a compiled character set and is not specifie .
--default-character-set=utf-8
這個是因為字符集錯了。是--default-character-set=utf8
3，匯出時提示warning，A partial dump from a server that has GTIDs
[root@bastion-IDC ~]# mysqldump -uroot -p xqsj_db > xqsj_db20160811.sql
Warning: A partial dump from a server that has GTIDs will by default include the GTIDs of all transactions, even those that
changed suppressed parts of the database. If you don't want to restore GTIDs, pass --set-gtid-purged=OFF. To make a complete
dump, pass --all-databases --triggers --routines --events.
關於GTID是5.6以後，加入了全域性事務 ID (GTID) 來強化資料庫的主備一致性，故障恢復，以及容錯能力。
官方給的：A global transaction identifier (GTID) is a unique identifier created and associated with each transaction committed on the server of origin (master).
所以可能是因為在一個資料庫裡面唯一，但是當匯入其他的庫就有可能重複。所有會有一個提醒。
可以通過新增--set-gtid-purged=off 或者–gtid-mode=OFF這兩個引數設定。
很有肯能是在匯入庫中重新生產GTID，而不用原來的。
[root@bastion-IDC ~]# mysqldump -uroot --set-gtid-purged=off -p xqsj_db > xqsj_db20160811.sql #這樣就ok了！
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在本地（192.168.1.152）部署好mysql環境，授權遠端客戶機192.168.1.%連線本機的mysql，在iptables防火牆也已開通3306埠。
如下：
mysql> select host,user,password from mysql.user; +--------------+-----------------+----------------------------------------------------------+ | host | user | password | +--------------+-----------------+----------------------------------------------------------+ | localhost | root | | | fdm1 | root | | | 127.0.0.1 | root | | | localhost | | | | fdm1 | | | | 192.168.1.% | db_hqsb | *DFC9DC16B13651A95ECEC3A26E07D244431B55C9 | | 192.168.1.% | db_ro_hqsb | *2C0B0DD50595BB40879110437BEEF026D019DFB7 | | 192.168.1.% | db_jkhwuser | *2C0B0DD50595BB40879110437BEEF026D019DFB7 | | 192.168.1.25 | slave | *EE52B8EACB3CCD13624273AD6B5CDA52B9B53EB7 | | 192.168.1.% | tech_db_user | *6053E57C7B61043DC2C6B4E3291D5F61CCC23F5C | | 192.168.1.% | game_db_user | *05EA4D71C9A1273ECF3E24E6323F7175AE45C366 | | localhost | zabbix | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 | +---------------+---------------+-----------------------------------------------------------+
問題：
在客戶機（比如192.168.1.20）上遠端連線上面192.168.1.152機器的mysql，連線失敗！
[root@huanqiu ~]# mysql -udb_ro_hqsb -h 192.168.1.152 -pmhxzkhl0802xqsjdb
ERROR 1130 (HY000): Host '192.168.1.20' is not allowed to connect to this MySQL server
解決：
是由於192.168.1.152的mysql裡“host為localhost，user和password為空”這條語句導致的，刪除這條即可解決問題！
mysql> delete from mysql.user where host="localhost" and user="";
Query OK, 1 row affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
這樣，授權連線的客戶機就能成功連線了！
[root@huanqiu ~]# mysql -uxqsj_db_ro_user -h 192.168.1.152 -pmhxzkhl0802xqsjdb
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 28
Server version: 5.1.73 Source distribution
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affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
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