一、數據初始化-主機名解析錯誤mysql
系統-Red Hat Enterprise Linux Server release 6.6linux
軟件-源碼安裝MySQL-5.6.27.tar.gzweb
環境-Linux rhel6.myexample.com 2.6.32-504.el6.x86_64 #1 SMP Tue Sep 16 01:56:35 EDT 2014 x86_64 x86_64 x86_64 GNU/Linuxsql
報錯：WARNING數據庫
[root@rhel6 mysql]# scripts/mysql_install_db --user=mysql
WARNING: The host 'rhel6.myexample.com' could not be looked up with ./bin/resolveip.
This probably means that your libc libraries are not 100 % compatible
with this binary MySQL version. The MySQL daemon, mysqld, should work
normally with the exception that host name resolving will not work.
This means that you should use IP addresses instead of hostnames
when specifying MySQL privileges !bootstrap
緣由：主機名解析錯誤。less
解決：hosts文件中添加以下內容，ok！ui
[root@rhel6 mysql]# vi /etc/hoststhis
192.168.56.20 rhel6.myexample.comatom
總結：
由於lib庫不是很兼容當前MySQL版本。在主機名解析不起做用的狀況下，會引發MySQL守護進程、mysqld工做異常，所以在MySQL中受權時須要使用IP地址，而不能使用主機名。
（不解決該問題，依然能夠正確執行scripts/mysql_install_db數據庫初始化腳本。）
二、數據初始化-時間戳問題
系統-Red Hat Enterprise Linux Server release 6.6
軟件-源碼安裝mysql-5.6.27.tar.gz
環境-Linux rhel6.myexample.com 2.6.32-504.el6.x86_64 #1 SMP Tue Sep 16 01:56:35 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux
報錯：Warning
[root@rhel6 mysql]# scripts/mysql_install_db --user=mysql
Installing MySQL system tables...2015-11-04 07:46:37 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2015-11-04 07:46:37 0 [Note] ./bin/mysqld (mysqld 5.6.27) starting as process 2867 ...
緣由：機器的系統時間與TIMESTAMP時間戳不匹配。
解決：執行mysql_install_db數據初始化腳本時添加explicit_defaults_for_timestamp選項。
[root@rhel6 mysql]# scripts/mysql_install_db --user=mysql --explicit_defaults_for_timestamp
三、數據初始化-重複安裝引發多個配置文件，默認配置文件
系統-Red Hat Enterprise Linux Server release 6.6
軟件-源碼安裝mysql-5.6.27.tar.gz
環境-Linux rhel6.myexample.com 2.6.32-504.el6.x86_64 #1 SMP Tue Sep 16 01:56:35 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux
報錯：Warning
WARNING: Found existing config file ./my.cnf on the system.
Because this file might be in use, it was not replaced,
but was used in bootstrap (unless you used --defaults-file)
and when you later start the server.
The new default config file was created as ./my-new.cnf,
please compare it with your file and take the changes you need.
WARNING: Default config file /etc/my.cnf exists on the system
This file will be read by default by the MySQL server
If you do not want to use this, either remove it, or use the
--defaults-file argument to mysqld_safe when starting the server
緣由：
Warning1是由於重複安裝，致使在安裝目錄下已經存在my.cnf文件。
Warning2是指默認的my.cnf配置文件在/etc/目錄下。
啓動Mysql server時，可指定--default-file=/path/my.cnf參數來啓動mysql服務。
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正確執行的顯示：
[root@rhel6 mysql]# scripts/mysql_install_db --user=mysql --explicit_defaults_for_timestamp Installing MySQL system tables...2015-11-04 08:48:03 0 [Note] ./bin/mysqld (mysqld 5.6.27) starting as process 3147 ... 2015-11-04 08:48:03 3147 [Note] InnoDB: Using atomics to ref count buffer pool pages 2015-11-04 08:48:03 3147 [Note] InnoDB: The InnoDB memory heap is disabled 2015-11-04 08:48:03 3147 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2015-11-04 08:48:03 3147 [Note] InnoDB: Memory barrier is not used 2015-11-04 08:48:03 3147 [Note] InnoDB: Compressed tables use zlib 1.2.3 2015-11-04 08:48:03 3147 [Note] InnoDB: Using CPU crc32 instructions 2015-11-04 08:48:03 3147 [Note] InnoDB: Initializing buffer pool, size = 128.0M 2015-11-04 08:48:03 3147 [Note] InnoDB: Completed initialization of buffer pool 2015-11-04 08:48:03 3147 [Note] InnoDB: Highest supported file format is Barracuda. 2015-11-04 08:48:03 3147 [Note] InnoDB: 128 rollback segment(s) are active. 2015-11-04 08:48:03 3147 [Note] InnoDB: Waiting for purge to start 2015-11-04 08:48:03 3147 [Note] InnoDB: 5.6.27 started; log sequence number 1626007 2015-11-04 08:48:11 3147 [Note] Binlog end 2015-11-04 08:48:11 3147 [Note] InnoDB: FTS optimize thread exiting. 2015-11-04 08:48:11 3147 [Note] InnoDB: Starting shutdown... 2015-11-04 08:48:12 3147 [Note] InnoDB: Shutdown completed; log sequence number 1626017 OK Filling help tables...2015-11-04 08:48:12 0 [Note] ./bin/mysqld (mysqld 5.6.27) starting as process 3171 ... 2015-11-04 08:48:12 3171 [Note] InnoDB: Using atomics to ref count buffer pool pages 2015-11-04 08:48:12 3171 [Note] InnoDB: The InnoDB memory heap is disabled 2015-11-04 08:48:12 3171 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2015-11-04 08:48:12 3171 [Note] InnoDB: Memory barrier is not used 2015-11-04 08:48:12 3171 [Note] InnoDB: Compressed tables use zlib 1.2.3 2015-11-04 08:48:12 3171 [Note] InnoDB: Using CPU crc32 instructions 2015-11-04 08:48:12 3171 [Note] InnoDB: Initializing buffer pool, size = 128.0M 2015-11-04 08:48:12 3171 [Note] InnoDB: Completed initialization of buffer pool 2015-11-04 08:48:12 3171 [Note] InnoDB: Highest supported file format is Barracuda. 2015-11-04 08:48:12 3171 [Note] InnoDB: 128 rollback segment(s) are active. 2015-11-04 08:48:12 3171 [Note] InnoDB: Waiting for purge to start 2015-11-04 08:48:12 3171 [Note] InnoDB: 5.6.27 started; log sequence number 1626017 2015-11-04 08:48:12 3171 [Note] Binlog end 2015-11-04 08:48:12 3171 [Note] InnoDB: FTS optimize thread exiting. 2015-11-04 08:48:12 3171 [Note] InnoDB: Starting shutdown... 2015-11-04 08:48:14 3171 [Note] InnoDB: Shutdown completed; log sequence number 1626027 OK To start mysqld at boot time you have to copy support-files/mysql.server to the right place for your system PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER ! To do so, start the server, then issue the following commands: ./bin/mysqladmin -u root password 'new-password' ./bin/mysqladmin -u root -h rhel6.myexample.com password 'new-password' Alternatively you can run: ./bin/mysql_secure_installation which will also give you the option of removing the test databases and anonymous user created by default. This is strongly recommended for production servers. See the manual for more instructions. You can start the MySQL daemon with: cd . ; ./bin/mysqld_safe & You can test the MySQL daemon with mysql-test-run.pl cd mysql-test ; perl mysql-test-run.pl Please report any problems at http://bugs.mysql.com/ The latest information about MySQL is available on the web at http://www.mysql.com Support MySQL by buying support/licenses at http://shop.mysql.com New default config file was created as ./my.cnf and will be used by default by the server when you start it. You may edit this file to change server settings WARNING: Default config file /etc/my.cnf exists on the system This file will be read by default by the MySQL server If you do not want to use this, either remove it, or use the --defaults-file argument to mysqld_safe when starting the server [root@rhel6 mysql]#