Linux
無法以普通使用者身份啟動 MySQL 5.5 (fedora 15)
service mysqld start
給我:Starting mysqld (via systemctl): Job failed. See system logs and 'systemctl status' for details. [FAILED]
錯誤日誌說:
110913 05:50:44 mysqld_safe Starting mysqld daemon with databases from /home/mysql/prod 110913 5:50:44 [Warning] Can't create test file /home/mysql/prod/myhostname.lower-test 110913 5:50:44 [Warning] Can't create test file /home/mysql/prod/myhostname.lower-test 110913 5:50:44 [Note] Plugin 'FEDERATED' is disabled. 110913 5:50:44 InnoDB: The InnoDB memory heap is disabled 110913 5:50:44 InnoDB: Mutexes and rw_locks use GCC atomic builtins 110913 5:50:44 InnoDB: Compressed tables use zlib 1.2.5 110913 5:50:44 InnoDB: Using Linux native AIO 110913 5:50:44 InnoDB: Initializing buffer pool, size = 16.0M 110913 5:50:44 InnoDB: Completed initialization of buffer pool 110913 5:50:44 InnoDB: Operating system error number 13 in a file operation. InnoDB: The error means mysqld does not have the access rights to InnoDB: the directory. InnoDB: File name /home/mysql/prod/ibdata1 InnoDB: File operation call: 'open'. InnoDB: Cannot continue operation. 110913 05:50:44 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
哦,錯誤 13,所以這是一個權限問題,對吧?
chown -R mysql:mysql /home/mysql/prod
仍然不會開始……讓我們試試這個:
/usr/libexec/mysqld --console --log-warnings --basedir=/usr --datadir=/home/mysql/prod --user=mysql --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/lib/mysql/mysql.sock
好的,這樣開始就好了(我可以使用 登錄
mysql -u root -p
),但我什至不知道這是在做什麼,它肯定不是由 systemctl 管理的。讓我們確保 mysql 是一個使用者:# grep 'mysql' /etc/passwd mysql:stuff:stuff:MySQL Server:/var/lib/mysql:/bin/bash
我的 my.cnf,有點縮寫(我已經嘗試了下面的很多變體):
[client] #password = your_password port = 3306 socket = /var/lib/mysql/mysql.sock [mysqld] user = mysql port = 3306 basedir = /usr log_warnings = 1 datadir = /home/mysql/prod socket = /var/lib/mysql/mysql.sock log-error = /var/log/mysql.log innodb_data_home_dir = /home/mysql/prod innodb_data_file_path = ibdata1:10M:autoextend #innodb_doublewrite = on #innodb_log_group_home_dir = /home/mysql/prod
我在這裡有點不知所措..有人可以給我留言嗎?
# ls -lah / | grep 'home' drwxr-xr-x. 6 root root 4.0K Aug 15 12:20 home # ls -lah /home | grep 'mysql' drwxr-xr-x. 6 mysql mysql 4.0K Sep 8 06:14 mysql # ls -lah /home/mysql/prod drwxr-x---. 2 mysql mysql 4.0K Sep 14 2009 bugs -rw-r--r--. 1 mysql mysql 18M Sep 13 06:17 ibdata1 -rw-r--r--. 1 mysql mysql 5.0M Sep 13 06:17 ib_logfile0 -rw-r--r--. 1 mysql mysql 5.0M Sep 13 05:23 ib_logfile1
(出於隱私考慮,刪除了上面的一些內容)
如果您使用的是 SELinux(Fedora、SUSE、一些 Ubuntu),則可能是問題所在。您需要使用以下內容更改 mySQL 的安全上下文:
chcon -Rv --type=mysqld_db_t /my/new/data/dir
或者如果您使用的是 AppArmor (Ubuntu),則需要更新您的
/etc/apparmor.d/usr.sbin.mysql