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  • New to Percona - need help starting server

    I'm running CentOS 6.5 with Percona 5.5 on a server that used to have Server version: 5.6.17 MySQL Community Server (GPL). MySQL was removed and Percona installed. MySQL won't start. I've researched the errors and none of the suggestions helped.

    [root@servername init.d]# ./mysql status
    ERROR! MySQL (Percona Server) is not running, but lock file (/var/lock/subsys/mysql) exists

    [root@servername init.d]# ./mysql start
    Starting MySQL (Percona Server).. ERROR! The server quit without updating PID file (/var/lib/mysql/servername.pid).

    /var/lib/MySQL/servername.err contains:

    140624 15:07:58 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
    140624 15:07:58 [Note] Plugin 'FEDERATED' is disabled.
    140624 15:07:58 InnoDB: The InnoDB memory heap is disabled
    140624 15:07:58 InnoDB: Mutexes and rw_locks use GCC atomic builtins
    140624 15:07:58 InnoDB: Compressed tables use zlib 1.2.3
    140624 15:07:58 InnoDB: Using Linux native AIO
    140624 15:07:58 InnoDB: Initializing buffer pool, size = 128.0M
    140624 15:07:58 InnoDB: Completed initialization of buffer pool
    140624 15:07:58 InnoDB: highest supported file format is Barracuda.
    InnoDB: Log scan progressed past the checkpoint lsn 50535
    140624 15:07:58 InnoDB: Database was not shut down normally!
    InnoDB: Starting crash recovery.
    InnoDB: Reading tablespace information from the .ibd files...
    InnoDB: Restoring possible half-written data pages from the doublewrite
    InnoDB: buffer...
    InnoDB: Doing recovery: scanned up to log sequence number 1597945
    140624 15:07:58 InnoDB: Starting an apply batch of log records to the database...
    InnoDB: Progress in percents: 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
    InnoDB: Apply batch completed
    140624 15:07:59 InnoDB: Waiting for the background threads to start
    140624 15:08:00 Percona XtraDB (http://www.percona.com) 5.5.37-35.1-35.1 started; log sequence number 1597945
    140624 15:08:00 [ERROR] /usr/sbin/mysqld: Can't find file: './mysql/host.frm' (errno: 13)
    140624 15:08:00 [ERROR] Fatal error: Can't open and lock privilege tables: Can't find file: './mysql/host.frm' (errno: 13)
    140624 15:08:00 mysqld_safe mysqld from pid file /var/lib/mysql/servername.pid ended

    Need help to get this server started. Thanks in advance.

  • #2
    140624 15:08:00 [ERROR] /usr/sbin/mysqld: Can't find file: './mysql/host.frm' (errno: 13)
    140624 15:08:00 [ERROR] Fatal error: Can't open and lock privilege tables: Can't find file: './mysql/host.frm' (errno: 13)

    Error 13 means "Permission denied" Check if those two files exist and if they are owned by mysql user and group.

    If you moved from 5.6 to 5.5, then that's a downgrade. Check this link please:

    http://dev.mysql.com/doc/refman/5.6/...us-series.html

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