1PMDAMYSQL(1)                General Commands Manual               PMDAMYSQL(1)
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NAME

6       pmdamysql - MySQL and MariaDB database PMDA
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DESCRIPTION

9       pmdamysql  is  a  Performance Co-Pilot PMDA which extracts live perfor‐
10       mance data from a running MySQL or MariaDB database.
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INSTALLATION

13       pmdamysql uses a configuration file from (in this order):
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15       ·   /etc/pcpdbi.conf
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17       ·   $PCP_PMDAS_DIR/mysql/mysql.conf
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19       This file can contain overridden values (Perl code)  for  the  settings
20       listed at the start of pmdamysql.pl, namely:
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22       ·   database    name    (see    DBI(3)    for   details,   default   is
23           "DBI:mysql:mysql")
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25       ·   database username (default is "dbmonitor")
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27       ·   database password (default is "dbmonitor")
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29       ·   login account (default is "pcp")
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31       On some versions of MariaDB (10+) the performance schema is disabled by
32       default,  and  must  be  enabled  for  the  PMDA  to function.  This is
33       achieved by adding the string "performance_schema" into the  "[mysqld]"
34       section  of  the  MariaDB configuration file (either my.cnf or my.ini).
35       The "SHOW ENGINES" SQL statement  shows  support  for  the  performance
36       schema.
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38       Once these initial setup actions are complete, you can access the names
39       and values for the mysql performance metrics by doing the following  as
40       root:
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42           # cd $PCP_PMDAS_DIR/mysql
43           # ./Install
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45       To uninstall, the following must be done as root:
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47           # cd $PCP_PMDAS_DIR/mysql
48           # ./Remove
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50       pmdamysql is launched by pmcd(1) and should never be executed directly.
51       The Install and  Remove  scripts  notify  pmcd(1)  when  the  agent  is
52       installed or removed.
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Binary Status values in text

55       Some of the status values are in the form of YES/NO or ON/OFF.
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57       Since these cannot be interpreted by tools like pmie(1), they have been
58       duplicated with a _num extension and the values  of  1  (YES/ON)  or  0
59       (NO/OFF).
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61   Eg:
62       ·   mysql.slave_status.slave_io_running
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64       ·   mysql.slave_status.slave_io_running_num
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FILES

67       /etc/pcpdbi.conf
68           configuration file for all PCP database monitors
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70       $PCP_PMDAS_DIR/mysql/mysql.conf
71           configuration file for pmdamysql
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73       $PCP_PMDAS_DIR/mysql/Install
74           installation script for the pmdamysql agent
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76       $PCP_PMDAS_DIR/mysql/Remove
77           undo installation script for the pmdamysql agent
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79       $PCP_LOG_DIR/pmcd/mysql.log
80           default log file for error messages from pmdamysql
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PCP ENVIRONMENT

83       Environment variables with the prefix PCP_ are used to parameterize the
84       file and directory names used by PCP. On each  installation,  the  file
85       /etc/pcp.conf  contains  the  local  values  for  these variables.  The
86       $PCP_CONF variable may be used to specify an alternative  configuration
87       file, as described in pcp.conf(5).
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SEE ALSO

90       PCPIntro(1), pmcd(1), pmdadbping(1), pmie(1) and DBI(3).
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94Performance Co-Pilot                  PCP                         PMDAMYSQL(1)
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