4. Selecting data from mysql using qt?

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Selecting data from mysql using qt?


  • both of them didnt return any resutl

    @
    root@zafar-laptop:/# find /var -name mysqld.sock
    root@zafar-laptop:/# find /opt -name mysqld.sock
    root@zafar-laptop:/#
    @

    0

  • I have bitnami lampp stack installed and when I start it then the socket file is created in /opt/lamppstack/mysql/tmp/mysql.sock. I think doforumda shoudl have similar directory and we need to check the permissions for that directory.

    0

  • Usually that means, that the mysql daemon is not running... but the the command line should not work as well... ;(

    It doesn't hurt to try to start the daemon:

    sudo /etc/init.d/mysql start

    ... and do the search for the socket file as above.

    0

  • gosh, do the find with sudo:

    sudo find /opt -name mysqld.sock
    sudo find /var -name mysqld.sock

    damn, I always forget that with ubuntu

    0

  • lyuts: yes, if he have the socket file at the same place, we need to symlink it to the /var/... location and happy end :) I hope so.

    0

  • tyut: yes i have one file with the name of mysql.sock in /opt/lampp/var/mysql/mysql.sock

    0

  • the permissions on mysql.sock it read write exe for all types of users

    0

  • Great, don't give up, we are close :D

    ls -l /opt/lampp/var/mysql/*

    maybe you have another mysql config file somewhere:

    ls -l /opt/lampp/etc/my.cnf
    or
    ls -l /opt/lampp/etc/mysql/my.cnf
    ?

    0

  • gosh... all with sudo please

    0

  • i got this output from this command sudo ls -l /opt/lampp/var/mysql/*

    the output is too long so i am posting it in pieces
    @
    root@zafar-laptop:/# ls -l opt/lampp/var/mysql/*
    -rw-rw---- 1 nobody nogroup 10485760 2010-10-10 22:58 opt/lampp/var/mysql/ibdata1
    -rw-rw---- 1 nobody nogroup 5242880 2010-10-11 12:20 opt/lampp/var/mysql/ib_logfile0
    -rw-rw---- 1 nobody nogroup 5242880 2010-10-09 20:01 opt/lampp/var/mysql/ib_logfile1
    srwxrwxrwx 1 nobody nogroup 0 2010-10-11 12:20 opt/lampp/var/mysql/mysql.sock
    -rw-r--r-- 1 nobody root 6 2008-12-02 10:52 opt/lampp/var/mysql/mysql_upgrade_info
    -rw-rw---- 1 nobody root 3658 2010-10-11 12:20 opt/lampp/var/mysql/zafar-laptop.err
    -rw-rw---- 1 nobody nogroup 5 2010-10-11 12:20 opt/lampp/var/mysql/zafar-laptop.pid

    opt/lampp/var/mysql/cdcol:
    total 20
    -rw-rw---- 1 nobody root 8658 2007-03-23 20:54 cds.frm
    -rw-rw---- 1 nobody root 172 2009-07-30 11:58 cds.MYD
    -rw-rw---- 1 nobody root 2048 2009-07-30 12:29 cds.MYI

    opt/lampp/var/mysql/mysql:
    total 5324
    -rw-rw---- 1 nobody root 8820 2008-12-02 10:52 columns_priv.frm
    -rw-rw---- 1 nobody root 23490 2008-12-02 10:52 columns_priv.MYD
    -rw-rw---- 1 nobody root 8192 2008-12-02 10:52 columns_priv.MYI
    -rw-rw---- 1 nobody root 9582 2008-12-02 10:52 db.frm
    -rw-rw---- 1 nobody root 2200 2010-10-11 21:41 db.MYD
    -rw-rw---- 1 nobody root 5120 2010-10-11 21:41 db.MYI
    -rw-rw---- 1 nobody root 10223 2008-12-02 10:52 event.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 event.MYD
    -rw-rw---- 1 nobody root 2048 2008-12-02 10:52 event.MYI
    -rw-rw---- 1 nobody root 8665 2008-12-02 10:52 func.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 func.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 func.MYI
    -rw-rw---- 1 nobody root 35 2008-12-02 12:19 general_log.CSM
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 general_log.CSV
    -rw-rw---- 1 nobody root 8776 2008-12-02 10:52 general_log.frm
    -rw-rw---- 1 nobody root 8700 2008-12-02 10:52 help_category.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 help_category.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 help_category.MYI
    -rw-rw---- 1 nobody root 8612 2008-12-02 10:52 help_keyword.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 help_keyword.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 help_keyword.MYI
    -rw-rw---- 1 nobody root 8630 2008-12-02 10:52 help_relation.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 help_relation.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 help_relation.MYI
    -rw-rw---- 1 nobody root 8770 2008-12-02 10:52 help_topic.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 help_topic.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 help_topic.MYI
    -rw-rw---- 1 nobody root 9510 2008-12-02 10:52 host.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 host.MYD
    -rw-rw---- 1 nobody root 2048 2008-12-02 10:52 host.MYI
    -rw-rw---- 1 nobody root 8778 2008-12-02 10:52 ndb_binlog_index.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 ndb_binlog_index.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 ndb_binlog_index.MYI
    -rw-rw---- 1 nobody root 8586 2008-12-02 10:52 plugin.frm
    -rw-rw---- 1 nobody root 1154 2009-04-10 10:16 plugin.MYD
    -rw-rw---- 1 nobody root 2048 2009-04-10 10:16 plugin.MYI
    -rw-rw---- 1 nobody root 9996 2008-12-02 10:52 proc.frm
    -rw-rw---- 1 nobody root 740 2008-12-02 12:14 proc.MYD
    -rw-rw---- 1 nobody root 4096 2008-12-02 12:19 proc.MYI
    -rw-rw---- 1 nobody root 8875 2008-12-02 10:52 procs_priv.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 procs_priv.MYD
    -rw-rw---- 1 nobody root 4096 2008-12-02 10:52 procs_priv.MYI
    -rw-rw---- 1 nobody root 8838 2008-12-02 10:52 servers.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 servers.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 servers.MYI
    -rw-rw---- 1 nobody root 35 2008-12-02 12:19 slow_log.CSM
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 slow_log.CSV
    -rw-rw---- 1 nobody root 8976 2008-12-02 10:52 slow_log.frm
    -rw-rw---- 1 nobody root 8955 2008-12-02 10:52 tables_priv.frm
    -rw-rw---- 1 nobody root 3404 2008-12-02 10:52 tables_priv.MYD
    -rw-rw---- 1 nobody root 8192 2008-12-02 10:52 tables_priv.MYI
    -rw-rw---- 1 nobody root 8636 2007-03-23 20:54 time_zone.frm
    -rw-rw---- 1 nobody root 8624 2008-12-02 10:52 time_zone_leap_second.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 time_zone_leap_second.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 time_zone_leap_second.MYI
    -rw-rw---- 1 nobody root 11795 2008-12-30 14:16 time_zone.MYD
    -rw-rw---- 1 nobody root 19456 2008-12-30 14:16 time_zone.MYI
    -rw-rw---- 1 nobody root 8606 2008-12-02 10:52 time_zone_name.frm
    -rw-rw---- 1 nobody root 331945 2008-12-30 14:16 time_zone_name.MYD
    -rw-rw---- 1 nobody root 37888 2008-12-30 14:16 time_zone_name.MYI
    -rw-rw---- 1 nobody root 8686 2008-12-30 14:16 time_zone_transition.frm
    -rw-rw---- 1 nobody root 1992570 2008-12-30 14:16 time_zone_transition.MYD
    -rw-rw---- 1 nobody root 2216960 2008-12-30 14:16 time_zone_transition.MYI
    -rw-rw---- 1 nobody root 8748 2008-12-30 14:16 time_zone_transition_type.frm
    -rw-rw---- 1 nobody root 293208 2008-12-30 14:16 time_zone_transition_type.MYD
    -rw-rw---- 1 nobody root 112640 2008-12-30 14:16 time_zone_transition_type.MYI
    -rw-rw---- 1 nobody root 10466 2008-12-02 10:52 user.frm
    -rw-rw---- 1 nobody root 388 2010-10-11 21:41 user.MYD
    -rw-rw---- 1 nobody root 2048 2010-10-11 21:41 user.MYI

    @

    0

  • @
    opt/lampp/var/mysql/phpmyadmin:
    total 144
    -rw-rw---- 1 nobody root 54 2004-12-06 15:56 db.opt
    -rw-rw---- 1 nobody root 8682 2007-03-23 20:54 pma_bookmark.frm
    -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_bookmark.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_bookmark.MYI
    -rw-rw---- 1 nobody root 12964 2007-03-23 20:54 pma_column_info.frm
    -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_column_info.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_column_info.MYI
    -rw-rw---- 1 nobody root 8704 2007-03-11 11:50 pma_designer_coords.frm
    -rw-rw---- 1 nobody root 0 2007-03-11 11:50 pma_designer_coords.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-11 11:50 pma_designer_coords.MYI
    -rw-rw---- 1 nobody root 8730 2007-03-23 20:54 pma_history.frm
    -rw-rw---- 1 nobody root 560 2010-10-11 12:21 pma_history.MYD
    -rw-rw---- 1 nobody root 5120 2010-10-11 12:21 pma_history.MYI
    -rw-rw---- 1 nobody root 8644 2007-03-23 20:54 pma_pdf_pages.frm
    -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_pdf_pages.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_pdf_pages.MYI
    -rw-rw---- 1 nobody root 8800 2007-03-23 20:54 pma_relation.frm
    -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_relation.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_relation.MYI
    -rw-rw---- 1 nobody root 8708 2007-03-23 20:54 pma_table_coords.frm
    -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_table_coords.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_table_coords.MYI
    -rw-rw---- 1 nobody root 8656 2007-03-23 20:54 pma_table_info.frm
    -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_table_info.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_table_info.MYI

    opt/lampp/var/mysql/test:
    total 0

    opt/lampp/var/mysql/testTwo:
    total 24
    -rw-rw---- 1 nobody nogroup 65 2010-10-10 13:13 db.opt
    -rw-rw---- 1 nobody nogroup 8634 2010-10-10 13:14 testTable.frm
    -rw-rw---- 1 nobody nogroup 44 2010-10-10 13:15 testTable.MYD
    -rw-rw---- 1 nobody nogroup 2048 2010-10-10 22:58 testTable.MYI
    root@zafar-laptop:/#
    root@zafar-laptop:/# sudo ls -l opt/lampp/var/mysql/*
    -rw-rw---- 1 nobody nogroup 10485760 2010-10-10 22:58 opt/lampp/var/mysql/ibdata1
    -rw-rw---- 1 nobody nogroup 5242880 2010-10-11 12:20 opt/lampp/var/mysql/ib_logfile0
    -rw-rw---- 1 nobody nogroup 5242880 2010-10-09 20:01 opt/lampp/var/mysql/ib_logfile1
    srwxrwxrwx 1 nobody nogroup 0 2010-10-11 12:20 opt/lampp/var/mysql/mysql.sock
    -rw-r--r-- 1 nobody root 6 2008-12-02 10:52 opt/lampp/var/mysql/mysql_upgrade_info
    -rw-rw---- 1 nobody root 3658 2010-10-11 12:20 opt/lampp/var/mysql/zafar-laptop.err
    -rw-rw---- 1 nobody nogroup 5 2010-10-11 12:20 opt/lampp/var/mysql/zafar-laptop.pid

    @

    0

  • @
    opt/lampp/var/mysql/cdcol:
    total 20
    -rw-rw---- 1 nobody root 8658 2007-03-23 20:54 cds.frm
    -rw-rw---- 1 nobody root 172 2009-07-30 11:58 cds.MYD
    -rw-rw---- 1 nobody root 2048 2009-07-30 12:29 cds.MYI

    opt/lampp/var/mysql/mysql:
    total 5324
    -rw-rw---- 1 nobody root 8820 2008-12-02 10:52 columns_priv.frm
    -rw-rw---- 1 nobody root 23490 2008-12-02 10:52 columns_priv.MYD
    -rw-rw---- 1 nobody root 8192 2008-12-02 10:52 columns_priv.MYI
    -rw-rw---- 1 nobody root 9582 2008-12-02 10:52 db.frm
    -rw-rw---- 1 nobody root 2200 2010-10-11 21:41 db.MYD
    -rw-rw---- 1 nobody root 5120 2010-10-11 21:41 db.MYI
    -rw-rw---- 1 nobody root 10223 2008-12-02 10:52 event.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 event.MYD
    -rw-rw---- 1 nobody root 2048 2008-12-02 10:52 event.MYI
    -rw-rw---- 1 nobody root 8665 2008-12-02 10:52 func.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 func.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 func.MYI
    -rw-rw---- 1 nobody root 35 2008-12-02 12:19 general_log.CSM
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 general_log.CSV
    -rw-rw---- 1 nobody root 8776 2008-12-02 10:52 general_log.frm
    -rw-rw---- 1 nobody root 8700 2008-12-02 10:52 help_category.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 help_category.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 help_category.MYI
    -rw-rw---- 1 nobody root 8612 2008-12-02 10:52 help_keyword.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 help_keyword.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 help_keyword.MYI
    -rw-rw---- 1 nobody root 8630 2008-12-02 10:52 help_relation.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 help_relation.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 help_relation.MYI
    -rw-rw---- 1 nobody root 8770 2008-12-02 10:52 help_topic.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 help_topic.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 help_topic.MYI
    -rw-rw---- 1 nobody root 9510 2008-12-02 10:52 host.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 host.MYD
    -rw-rw---- 1 nobody root 2048 2008-12-02 10:52 host.MYI
    -rw-rw---- 1 nobody root 8778 2008-12-02 10:52 ndb_binlog_index.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 ndb_binlog_index.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 ndb_binlog_index.MYI
    -rw-rw---- 1 nobody root 8586 2008-12-02 10:52 plugin.frm
    -rw-rw---- 1 nobody root 1154 2009-04-10 10:16 plugin.MYD
    -rw-rw---- 1 nobody root 2048 2009-04-10 10:16 plugin.MYI
    -rw-rw---- 1 nobody root 9996 2008-12-02 10:52 proc.frm
    -rw-rw---- 1 nobody root 740 2008-12-02 12:14 proc.MYD
    -rw-rw---- 1 nobody root 4096 2008-12-02 12:19 proc.MYI
    -rw-rw---- 1 nobody root 8875 2008-12-02 10:52 procs_priv.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 procs_priv.MYD
    -rw-rw---- 1 nobody root 4096 2008-12-02 10:52 procs_priv.MYI
    -rw-rw---- 1 nobody root 8838 2008-12-02 10:52 servers.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 servers.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 servers.MYI
    -rw-rw---- 1 nobody root 35 2008-12-02 12:19 slow_log.CSM
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 slow_log.CSV
    -rw-rw---- 1 nobody root 8976 2008-12-02 10:52 slow_log.frm
    -rw-rw---- 1 nobody root 8955 2008-12-02 10:52 tables_priv.frm
    -rw-rw---- 1 nobody root 3404 2008-12-02 10:52 tables_priv.MYD
    -rw-rw---- 1 nobody root 8192 2008-12-02 10:52 tables_priv.MYI
    -rw-rw---- 1 nobody root 8636 2007-03-23 20:54 time_zone.frm
    -rw-rw---- 1 nobody root 8624 2008-12-02 10:52 time_zone_leap_second.frm
    -rw-rw---- 1 nobody root 0 2008-12-02 10:52 time_zone_leap_second.MYD
    -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 time_zone_leap_second.MYI
    -rw-rw---- 1 nobody root 11795 2008-12-30 14:16 time_zone.MYD
    -rw-rw---- 1 nobody root 19456 2008-12-30 14:16 time_zone.MYI
    -rw-rw---- 1 nobody root 8606 2008-12-02 10:52 time_zone_name.frm
    -rw-rw---- 1 nobody root 331945 2008-12-30 14:16 time_zone_name.MYD
    -rw-rw---- 1 nobody root 37888 2008-12-30 14:16 time_zone_name.MYI
    -rw-rw---- 1 nobody root 8686 2008-12-30 14:16 time_zone_transition.frm
    -rw-rw---- 1 nobody root 1992570 2008-12-30 14:16 time_zone_transition.MYD
    -rw-rw---- 1 nobody root 2216960 2008-12-30 14:16 time_zone_transition.MYI
    -rw-rw---- 1 nobody root 8748 2008-12-30 14:16 time_zone_transition_type.frm
    -rw-rw---- 1 nobody root 293208 2008-12-30 14:16 time_zone_transition_type.MYD
    -rw-rw---- 1 nobody root 112640 2008-12-30 14:16 time_zone_transition_type.MYI
    -rw-rw---- 1 nobody root 10466 2008-12-02 10:52 user.frm
    -rw-rw---- 1 nobody root 388 2010-10-11 21:41 user.MYD
    -rw-rw---- 1 nobody root 2048 2010-10-11 21:41 user.MYI

    @

    0

  • I bet it is here @/opt/lampp/mysql/my.cnf@

    0

  • @
    opt/lampp/var/mysql/phpmyadmin:
    total 144
    -rw-rw---- 1 nobody root 54 2004-12-06 15:56 db.opt
    -rw-rw---- 1 nobody root 8682 2007-03-23 20:54 pma_bookmark.frm
    -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_bookmark.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_bookmark.MYI
    -rw-rw---- 1 nobody root 12964 2007-03-23 20:54 pma_column_info.frm
    -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_column_info.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_column_info.MYI
    -rw-rw---- 1 nobody root 8704 2007-03-11 11:50 pma_designer_coords.frm
    -rw-rw---- 1 nobody root 0 2007-03-11 11:50 pma_designer_coords.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-11 11:50 pma_designer_coords.MYI
    -rw-rw---- 1 nobody root 8730 2007-03-23 20:54 pma_history.frm
    -rw-rw---- 1 nobody root 560 2010-10-11 12:21 pma_history.MYD
    -rw-rw---- 1 nobody root 5120 2010-10-11 12:21 pma_history.MYI
    -rw-rw---- 1 nobody root 8644 2007-03-23 20:54 pma_pdf_pages.frm
    -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_pdf_pages.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_pdf_pages.MYI
    -rw-rw---- 1 nobody root 8800 2007-03-23 20:54 pma_relation.frm
    -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_relation.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_relation.MYI
    -rw-rw---- 1 nobody root 8708 2007-03-23 20:54 pma_table_coords.frm
    -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_table_coords.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_table_coords.MYI
    -rw-rw---- 1 nobody root 8656 2007-03-23 20:54 pma_table_info.frm
    -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_table_info.MYD
    -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_table_info.MYI

    opt/lampp/var/mysql/test:
    total 0

    opt/lampp/var/mysql/testTwo:
    total 24
    -rw-rw---- 1 nobody nogroup 65 2010-10-10 13:13 db.opt
    -rw-rw---- 1 nobody nogroup 8634 2010-10-10 13:14 testTable.frm
    -rw-rw---- 1 nobody nogroup 44 2010-10-10 13:15 testTable.MYD
    -rw-rw---- 1 nobody nogroup 2048 2010-10-10 22:58 testTable.MYI

    @

    0

  • yes the second command returns this

    @
    root@zafar-laptop:/# sudo ls -l /opt/lampp/etc/my.cnf
    -rw-r--r-- 1 root root 5030 2009-04-10 10:11 /opt/lampp/etc/my.cnf
    @

    0

  • ok doforumda, that's enough... I want to make it sure, can you check, the
    sudo ls -l /opt/lampp/etc/my.cnf
    or
    sudo ls -l /opt/lampp/etc/mysql/my.cnf
    ?
    If one of them is there, let's take a look with gedit, for the
    socket = /something
    part?

    0

  • ok, then
    sudo gedit /opt/lamp/etc/my.cnf

    look for the socket = something line

    0

  • ¤ Dii ¤, maybe this would be easier?

    @sudo find /opt/lampp -name my.cnf -type f | xargs grep -n socket@

    0

  • Dii: i use this command sudo gedit /opt/lamp/etc/my.cnf but unfortunately the file is empty. there is nothing in it.

    lyut: your command sudo find /opt/lampp -name my.cnf -type f | xargs grep -n socket

    displays this
    @
    root@zafar-laptop:/# sudo find /opt/lampp -name my.cnf -type f | xargs
    /opt/lampp/etc/my.cnf
    @

    0

  • sorry wait

    0

  • lyuts: yes it should be easier...

    doforumda: i misstyped the command, try this:
    sudo gedit /opt/lampp/etc/my.cnf

    0

  • lyut: your command sudo find /opt/lampp -name my.cnf -type f | xargs grep -n socket actually displays this. above one was wrong because i use the wrong command

    @
    root@zafar-laptop:/# sudo find /opt/lampp -name my.cnf -type f | xargs grep -n socket
    21:socket = /opt/lampp/var/mysql/mysql.sock
    28:socket = /opt/lampp/var/mysql/mysql.sock
    44:# All interaction with mysqld must be made via Unix sockets or named pipes.
    @

    0

  • lyut: sudo gedit /opt/lampp/etc/my.cnf this command does open my.cnf and it also have

    socket = /opt/lampp/var/mysql/mysql.sock

    in two lines means there are two entries for socket in my.cnf

    0

  • I think this is rather rough solution, but worth trying:

    @sudo mkdir -p /var/run/mysqld
    sudo ln -s /opt/lampp/var/mysql/mysql.sock /var/run/mysqld/mysqld.sock@

    0

  • so what next i think here the path for socket is correct because i have one mysql.sock file in that exactly same directory

    0

  • you mean i should create a dir at opt/lampp/var/run/mysqld ????

    0

  • millions of thanks to both of you TYUT and Dii. it works. one more question can please tell me what does this command do
    @
    sudo ln -s /opt/lampp/var/mysql/mysql.sock /var/run/mysqld/mysqld.sock
    @

    and also if i want to install everything from scratch then once i have to use this command to make it work?

    0

  • doforumda: the problem was ~small... the Qt mysql driver looks for the socket file (the connection to mysql) in the default location (var/run/mysqld/mysqld.sock), though you had it somewhere else, because your lampp package changed the path.

    The "ln -s" made a symbolic link to that, so the /var/run/mysqld/mysqld.sock point to the /opt/lampp/var/mysql/mysql.sock. This way Qt can find it. If you do a new installation, with lampp, you should do it again, if you use the regular mysql package, probably, you won't face this problem.

    lyuts: great work, we deserve these points :)

    0

  • I think our solution is rough enough, but at least it works. I think the best solution is to set the socket parameter in my.cnf to /var/run/mysqld/mysqld.sock. But it is up to you doforumda.

    bq. millions of thanks to both of you TYUT and Dii.

    Hey, I'm lyuts, not TYUT :)

    doforumda and ¤ Dii ¤, my congratulations, we did it.

    0

  • lyuts: I think that's the best solution, if he is changing the socket parameter of mysql probably he will screw up some other components in his LAMPP configuration. I don't recommend that.

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  • I don't know what's going on within LAMPP and you might be right. It's just creating this symlink looks more like a workaround.

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  • [quote author="lyuts" date="1286886793"]I think our solution is rough enough, but at least it works. I think the best solution is to set the socket parameter in my.cnf to /var/run/mysqld/mysqld.sock. But it is up to you doforumda.

    bq. millions of thanks to both of you TYUT and Dii.

    Hey, I'm lyuts, not TYUT :)

    doforumda and ¤ Dii ¤, my congratulations, we did it.[/quote]

    sorry I wrote your name wrong

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  • with 131 replies, I think this must be the longest threaded discussion in devnet forum so far !!!
    congrats to you guys for sticking till the end and solving it :)

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  • hi
    i have got the same problem again after restarting my system.
    when i execute code it again fails to connect. it returns this problem.
    @
    Starting /home/zafar/c++/insertquery-build-desktop/insertquery...
    DB could be opened QSqlError(2002, "QMYSQL: Unable to connect", "Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)")
    /home/zafar/c++/insertquery-build-desktop/insertquery exited with code 0
    @

    i ran this command
    @
    sudo ln -s /opt/lampp/var/mysql/mysql.sock /var/run/mysqld/mysqld.sock
    @
    but this displays this error
    @
    ln: creating symbolic link `/var/run/mysqld/mysqld.sock': No such file or directory
    @
    i have already created this directory while lyut and Dii were solving this problem. at that time when i ran this command it worked really perfect but now it is not working.
    Please help

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  • Welcome back :)

    Let's check to existence of those sock files...

    sudo ls -l /opt/lampp/var/mysql/mysql.sock

    sudo ls -l /var/run/mysqld/mysqld.sock

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  • well mysql.sock is there
    but there is no such thing in mysqld. i mean there is no mysqld.sock file in mysqld folder

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  • thank god your are here

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  • i am waiting for help Dii

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  • hmmm pretty strange, does /var/run/mysqld exits? if you try

    sudo mkdir /var/run/mysqld

    and then the

    sudo ln -s /opt/lampp/var/mysql/mysql.sock /var/run/mysqld/mysqld.sock

    Though restart should not delete the directory, but I can't imagine anything else at the moment.

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  • it works now thanks again. any clue what happened to this file after restarting.

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