percona mysql 5.7 初始化,由於 環境需要 mysql 初始化之後是空密碼
場景復現:
mkdir mysql10888
mkdir binlog innodata innolog relaylog log cnf
/usr/sbin/mysqld --defaults-file=/data/mysql10888/cnf/mysql10888.cnf --initialize --initialize-insecure --datadir=/data/mysql10888/data --user=mysqldb
報錯:2019-03-13t15:49:10.674060+08:00 0 [warning] gtid table is not ready to be used. table 'mysql.gtid_executed' cannot be opened.
2019-03-13t15:49:11.016977+08:00 0 [warning] ca certificate ca.pem is self signed.
2019-03-13t15:49:11.226013+08:00 1 [warning] root@localhost is created with an empty password ! please consider switching off the --initialize-insecure option.
2019-03-13t15:49:11.453063+08:00 1 [error] 1819 your password does not satisfy the current policy requirements
2019-03-13t15:49:11.453149+08:00 0 [error] aborting
可以正常的啟動，error日誌也沒有報錯
使用空密碼無法進入:
mysql -s /data/mysql10777/data/mysqld10777.sock -uroot -p -p 10777
enter password:
error 1045 (28000): access denied for user 'root'@'localhost' (using password: no)
[[email protected] mysql10777]$ mysql -s /data/mysql10777/data/mysqld10777.sock
error 1045 (28000): access denied for user 'root'@'localhost' (using password: no)
埠與程序正常。
嘗試一:去掉密碼驗證:
skip-grant-tables
進入mysql5.7 發現user表是空的
root@localhost:mysqld10777.sock:[(none)]>select user,host from mysql.user;
empty set (0.00 sec)
root@localhost:mysqld10777.sock:[(none)]>show databases;
+--------------------+
| database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| undolog |
+--------------------+
4 rows in set (0.00 sec)
少了sys庫
百思不得其解，在google了很多文章說的都不對
嘗試二、突然想到5.6和5.7 的密碼驗證模式不一樣,關閉5.7 密碼驗證
[mysqld]
validate_password = off
重新初始化
error日誌:
2019-03-13t15:06:55.600940+08:00 0 [warning] gtid table is not ready to be used. table 'mysql.gtid_executed' cannot be opened.
2019-03-13t15:06:56.010897+08:00 0 [warning] ca certificate ca.pem is self signed.
2019-03-13t15:06:56.266208+08:00 1 [warning] root@localhost is created with an empty password ! please consider switching off the --initialize-insecure option.
登入:mysql -s /data/mysql10888/data/mysqld10888.sock -uroot
關閉了密碼,也不需要上來先設定密碼了
root@localhost:mysqld10888.sock:[(none)]>show databases;
+--------------------+
| database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| undolog |
+--------------------+
5 rows in set (0.00 sec)
sys庫也有了
root@localhost:mysqld10888.sock:[(none)]>select user,host from mysql.user;
+---------------+-----------+
| user | host |
+---------------+-----------+
| mysql.session | localhost |
| mysql.sys | localhost |
| root | localhost |
+---------------+-----------+
3 rows in set (0.00 sec)
猜想: 估計是乙個bug,mysql5.7是嚴格的密碼策略使用空密碼可能觸發驗證機制
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