MySQL problem >> missing mysql.sock Post: 28981

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Top Forums UNIX for Advanced & Expert Users MySQL problem >> missing mysql.sock Post 28981 by photon on Friday 27th of September 2002 12:25:26 AM

09-27-2002

Registered User

You have to start your mysqld.

If your mysqld is not running you will get a
missing mysql.sock file error.

Maybe your user name to login to mysql in not correct. MySql has a default user name. Unix
and MySql have nothing to do with each others
user names.

Without proper user name login, I get this:

-------------------------------------
# bin/safe_mysqld --log &
1168
# chown: unknown user id mysql
Starting mysqld daemon with databases from /usr/local/mysql/mysql-3.23.52/data
020926 22:24:22 mysqld ended

# bin/mysqladmin version
bin/mysqladmin: connect to server at 'localhost' failed
error: 'Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
'
Check that mysqld is running and that the socket: '/tmp/mysql.sock' exists!
---------------------------------------------

Try something like:

shell> bin/safe_mysqld -u user_name &

Where user_name is your MySql login name.

To see if mysqld is running type:

Shell> bin/mysqladmin version

You should see something like:

Running threads: 1

photon

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LEARN ABOUT CENTOS

pmdamysql

PMDAMYSQL(1)						       Performance Co-Pilot						      PMDAMYSQL(1)

NAME

       pmdamysql - MySQL database PMDA

DESCRIPTION

       pmdamysql is a Performance Co-Pilot PMDA which extracts live performance data from a running MySQL database.

INSTALLATION

       pmdamysql uses a configuration file from (in this order):

       o   /etc/pcpdbi.conf

       o   $PCP_PMDAS_DIR/mysql/mysql.conf

       This file can contain overridden values (Perl code) for the settings listed at the start of pmdamysql.pl, namely:

       o   database name (see DBI(3) for details)

       o   database user name

       o   database pass word

       Once this is setup, you can access the names and values for the mysql performance metrics by doing the following as root:

	       # cd $PCP_PMDAS_DIR/mysql
	       # ./Install

       If you want to undo the installation, do the following as root:

	       # cd $PCP_PMDAS_DIR/mysql
	       # ./Remove

       pmdamysql is launched by pmcd(1) and should never be executed directly.	The Install and Remove scripts notify pmcd(1) when the agent is
       installed or removed.

Binary Status values in text
       Some of the status values are in the form of YES/NO or ON/OFF.

       Since these cannot be intepreted by tools like PMIE, they have been duplicated with a _num extension and the values of 1 (YES/ON) or 0
       (NO/OFF).

   Eg:
       o   mysql.slave_status.slave_io_running

       o   mysql.slave_status.slave_io_running_num

FILES

       /etc/pcpdbi.conf
	   configuration file for all PCP database monitors

       $PCP_PMDAS_DIR/mysql/mysql.conf
	   configuration file for pmdamysql

       $PCP_PMDAS_DIR/mysql/Install
	   installation script for the pmdamysql agent

       $PCP_PMDAS_DIR/mysql/Remove
	   undo installation script for the pmdamysql agent

       $PCP_LOG_DIR/pmcd/mysql.log
	   default log file for error messages from pmdamysql

SEE ALSO

       pmcd(1), pmdadbping.pl(1) and DBI(3).  # vi: sw=4 ts=4 et:

3.8.10							       Performance Co-Pilot						      PMDAMYSQL(1)