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# -*- coding: utf-8 -*-
# Description: MySQL netdata python.d module
# Author: Pawel Krupa (paulfantom)
from base import SimpleService
import msg
# import 3rd party library to handle MySQL communication
try:
import MySQLdb
# https://github.com/PyMySQL/mysqlclient-python
msg.info("using MySQLdb")
except ImportError:
try:
import pymysql as MySQLdb
# https://github.com/PyMySQL/PyMySQL
msg.info("using pymysql")
except ImportError:
msg.error("MySQLdb or PyMySQL module is needed to use mysql.chart.py plugin")
raise ImportError
# default module values (can be overridden per job in `config`)
# update_every = 3
priority = 90000
retries = 60
# default configuration (overridden by python.d.plugin)
# config = {
# 'local': {
# 'user': 'root',
# 'pass': '',
# 'socket': '/var/run/mysqld/mysqld.sock',
# 'update_every': update_every,
# 'retries': retries,
# 'priority': priority
# }
#}
# query executed on MySQL server
QUERY = "SHOW GLOBAL STATUS;"
ORDER = ['net',
'queries',
'handlers',
'table_locks',
'join_issues', 'sort_issues',
'tmp',
'connections', 'connection_errors',
'binlog_cache', 'binlog_stmt_cache',
'threads', 'thread_cache_misses',
'innodb_io', 'innodb_io_ops', 'innodb_io_pending_ops', 'innodb_log', 'innodb_os_log', 'innodb_os_log_io',
'innodb_cur_row_lock', 'innodb_rows', 'innodb_buffer_pool_pages', 'innodb_buffer_pool_bytes',
'innodb_buffer_pool_read_ahead', 'innodb_buffer_pool_reqs', 'innodb_buffer_pool_ops',
'qcache_ops', 'qcache', 'qcache_freemem', 'qcache_memblocks',
'key_blocks', 'key_requests', 'key_disk_ops',
'files', 'files_rate']
CHARTS = {
'net': {
'options': [None, 'mysql Bandwidth', 'kilobits/s', 'bandwidth', 'mysql.net', 'area'],
'lines': [
["Bytes_received", "in", "incremental", 8, 1024],
["Bytes_sent", "out", "incremental", -8, 1024]
]},
'queries': {
'options': [None, 'mysql Queries', 'queries/s', 'queries', 'mysql.queries', 'line'],
'lines': [
["Queries", "queries", "incremental"],
["Questions", "questions", "incremental"],
["Slow_queries", "slow_queries", "incremental"]
]},
'handlers': {
'options': [None, 'mysql Handlers', 'handlers/s', 'handlers', 'mysql.handlers', 'line'],
'lines': [
["Handler_commit", "commit", "incremental"],
["Handler_delete", "delete", "incremental"],
["Handler_prepare", "prepare", "incremental"],
["Handler_read_first", "read_first", "incremental"],
["Handler_read_key", "read_key", "incremental"],
["Handler_read_next", "read_next", "incremental"],
["Handler_read_prev", "read_prev", "incremental"],
["Handler_read_rnd", "read_rnd", "incremental"],
["Handler_read_rnd_next", "read_rnd_next", "incremental"],
["Handler_rollback", "rollback", "incremental"],
["Handler_savepoint", "savepoint", "incremental"],
["Handler_savepoint_rollback", "savepoint_rollback", "incremental"],
["Handler_update", "update", "incremental"],
["Handler_write", "write", "incremental"]
]},
'table_locks': {
'options': [None, 'mysql Tables Locks', 'locks/s', 'locks', 'mysql.table_locks', 'line'],
'lines': [
["Table_locks_immediate", "immediate", "incremental"],
["Table_locks_waited", "waited", "incremental", -1, 1]
]},
'join_issues': {
'options': [None, 'mysql Select Join Issues', 'joins/s', 'issues', 'mysql.join_issues', 'line'],
'lines': [
["Select_full_join", "full_join", "incremental"],
["Select_full_range_join", "full_range_join", "incremental"],
["Select_range", "range", "incremental"],
["Select_range_check", "range_check", "incremental"],
["Select_scan", "scan", "incremental"]
]},
'sort_issues': {
'options': [None, 'mysql Sort Issues', 'issues/s', 'issues', 'mysql.sort_issues', 'line'],
'lines': [
["Sort_merge_passes", "merge_passes", "incremental"],
["Sort_range", "range", "incremental"],
["Sort_scan", "scan", "incremental"]
]},
'tmp': {
'options': [None, 'mysql Tmp Operations', 'counter', 'temporaries', 'mysql.tmp', 'line'],
'lines': [
["Created_tmp_disk_tables", "disk_tables", "incremental"],
["Created_tmp_files", "files", "incremental"],
["Created_tmp_tables", "tables", "incremental"]
]},
'connections': {
'options': [None, 'mysql Connections', 'connections/s', 'connections', 'mysql.connections', 'line'],
'lines': [
["Connections", "all", "incremental"],
["Aborted_connects", "aborted", "incremental"]
]},
'binlog_cache': {
'options': [None, 'mysql Binlog Cache', 'transactions/s', 'binlog', 'mysql.binlog_cache', 'line'],
'lines': [
["Binlog_cache_disk_use", "disk", "incremental"],
["Binlog_cache_use", "all", "incremental"]
]},
'threads': {
'options': [None, 'mysql Threads', 'threads', 'threads', 'mysql.threads', 'line'],
'lines': [
["Threads_connected", "connected", "absolute"],
["Threads_created", "created", "incremental"],
["Threads_cached", "cached", "absolute", -1, 1],
["Threads_running", "running", "absolute"],
]},
'thread_cache_misses': {
'options': [None, 'mysql Threads Cache Misses', 'misses', 'threads', 'mysql.thread_cache_misses', 'area'],
'lines': [
["Thread_cache_misses", "misses", "absolute", 1, 100]
]},
'innodb_io': {
'options': [None, 'mysql InnoDB I/O Bandwidth', 'kilobytes/s', 'innodb', 'mysql.innodb_io', 'area'],
'lines': [
["Innodb_data_read", "read", "incremental", 1, 1024],
["Innodb_data_written", "write", "incremental", -1, 1024]
]},
'innodb_io_ops': {
'options': [None, 'mysql InnoDB I/O Operations', 'operations/s', 'innodb', 'mysql.innodb_io_ops', 'line'],
'lines': [
["Innodb_data_reads", "reads", "incremental"],
["Innodb_data_writes", "writes", "incremental", -1, 1],
["Innodb_data_fsyncs", "fsyncs", "incremental"]
]},
'innodb_io_pending_ops': {
'options': [None, 'mysql InnoDB Pending I/O Operations', 'operations', 'innodb', 'mysql.innodb_io_pending_ops', 'line'],
'lines': [
["Innodb_data_pending_reads", "reads", "absolute"],
["Innodb_data_pending_writes", "writes", "absolute", -1, 1],
["Innodb_data_pending_fsyncs", "fsyncs", "absolute"]
]},
'innodb_log': {
'options': [None, 'mysql InnoDB Log Operations', 'operations/s', 'innodb', 'mysql.innodb_log', 'line'],
'lines': [
["Innodb_log_waits", "waits", "incremental"],
["Innodb_log_write_requests", "write_requests", "incremental", -1, 1],
["Innodb_log_writes", "writes", "incremental", -1, 1],
]},
'innodb_os_log': {
'options': [None, 'mysql InnoDB OS Log Operations', 'operations', 'innodb', 'mysql.innodb_os_log', 'line'],
'lines': [
["Innodb_os_log_fsyncs", "fsyncs", "incremental"],
["Innodb_os_log_pending_fsyncs", "pending_fsyncs", "absolute"],
["Innodb_os_log_pending_writes", "pending_writes", "absolute", -1, 1],
]},
'innodb_os_log_io': {
'options': [None, 'mysql InnoDB OS Log Bandwidth', 'kilobytes/s', 'innodb', 'mysql.innodb_os_log_io', 'area'],
'lines': [
["Innodb_os_log_written", "write", "incremental", -1, 1024],
]},
'innodb_cur_row_lock': {
'options': [None, 'mysql InnoDB Current Row Locks', 'operations', 'innodb', 'mysql.innodb_cur_row_lock', 'area'],
'lines': [
["Innodb_row_lock_current_waits", "current_waits", "absolute"]
]},
'innodb_rows': {
'options': [None, 'mysql InnoDB Row Operations', 'operations/s', 'innodb', 'mysql.innodb_rows', 'area'],
'lines': [
["Innodb_rows_inserted", "read", "incremental"],
["Innodb_rows_read", "deleted", "incremental", -1, 1],
["Innodb_rows_updated", "inserted", "incremental", 1, 1],
["Innodb_rows_deleted", "updated", "incremental", -1, 1],
]},
'innodb_buffer_pool_pages': {
'options': [None, 'mysql InnoDB Buffer Pool Pages', 'pages', 'innodb', 'mysql.innodb_buffer_pool_pages', 'line'],
'lines': [
["Innodb_buffer_pool_pages_data", "data", "absolute"],
["Innodb_buffer_pool_pages_dirty", "dirty", "absolute", -1, 1],
["Innodb_buffer_pool_pages_free", "free", "absolute"],
["Innodb_buffer_pool_pages_flushed", "flushed", "incremental", -1, 1],
["Innodb_buffer_pool_pages_misc", "misc", "absolute", -1, 1],
["Innodb_buffer_pool_pages_total", "total", "absolute"]
]},
'innodb_buffer_pool_bytes': {
'options': [None, 'mysql InnoDB Buffer Pool Bytes', 'MB', 'innodb', 'mysql.innodb_buffer_pool_bytes', 'area'],
'lines': [
["Innodb_buffer_pool_bytes_data", "data", "absolute", 1, 1024 * 1024],
["Innodb_buffer_pool_bytes_dirty", "dirty", "absolute", -1, 1024 * 1024]
]},
'innodb_buffer_pool_read_ahead': {
'options': [None, 'mysql InnoDB Buffer Pool Read Ahead', 'operations/s', 'innodb', 'mysql.innodb_buffer_pool_read_ahead', 'area'],
'lines': [
["Innodb_buffer_pool_read_ahead", "all", "incremental"],
["Innodb_buffer_pool_read_ahead_evicted", "evicted", "incremental", -1, 1],
["Innodb_buffer_pool_read_ahead_rnd", "random", "incremental"]
]},
'innodb_buffer_pool_reqs': {
'options': [None, 'mysql InnoDB Buffer Pool Requests', 'requests/s', 'innodb', 'mysql.innodb_buffer_pool_reqs', 'area'],
'lines': [
["Innodb_buffer_pool_read_requests", "reads", "incremental"],
["Innodb_buffer_pool_write_requests", "writes", "incremental", -1, 1]
]},
'innodb_buffer_pool_ops': {
'options': [None, 'mysql InnoDB Buffer Pool Operations', 'operations/s', 'innodb', 'mysql.innodb_buffer_pool_ops', 'area'],
'lines': [
["Innodb_buffer_pool_reads", "disk reads", "incremental"],
["Innodb_buffer_pool_wait_free", "wait free", "incremental", -1, 1]
]},
'qcache_ops': {
'options': [None, 'mysql QCache Operations', 'queries/s', 'qcache', 'mysql.qcache_ops', 'line'],
'lines': [
["Qcache_hits", "hits", "incremental"],
["Qcache_lowmem_prunes", "lowmem prunes", "incremental", -1, 1],
["Qcache_inserts", "inserts", "incremental"],
["Qcache_not_cached", "not cached", "incremental", -1, 1]
]},
'qcache': {
'options': [None, 'mysql QCache Queries in Cache', 'queries', 'qcache', 'mysql.qcache', 'line'],
'lines': [
["Qcache_queries_in_cache", "queries", "absolute"]
]},
'qcache_freemem': {
'options': [None, 'mysql QCache Free Memory', 'MB', 'qcache', 'mysql.qcache_freemem', 'area'],
'lines': [
["Qcache_free_memory", "free", "absolute", 1, 1024 * 1024]
]},
'qcache_memblocks': {
'options': [None, 'mysql QCache Memory Blocks', 'blocks', 'qcache', 'mysql.qcache_memblocks', 'line'],
'lines': [
["Qcache_free_blocks", "free", "absolute"],
["Qcache_total_blocks", "total", "absolute"]
]},
'key_blocks': {
'options': [None, 'mysql MyISAM Key Cache Blocks', 'blocks', 'myisam', 'mysql.key_blocks', 'line'],
'lines': [
["Key_blocks_unused", "unused", "absolute"],
["Key_blocks_used", "used", "absolute", -1, 1],
["Key_blocks_not_flushed", "not flushed", "absolute"]
]},
'key_requests': {
'options': [None, 'mysql MyISAM Key Cache Requests', 'requests/s', 'myisam', 'mysql.key_requests', 'area'],
'lines': [
["Key_read_requests", "reads", "incremental"],
["Key_write_requests", "writes", "incremental", -1, 1]
]},
'key_disk_ops': {
'options': [None, 'mysql MyISAM Key Cache Disk Operations', 'operations/s', 'myisam', 'mysql.key_disk_ops', 'area'],
'lines': [
["Key_reads", "reads", "incremental"],
["Key_writes", "writes", "incremental", -1, 1]
]},
'files': {
'options': [None, 'mysql Open Files', 'files', 'files', 'mysql.files', 'line'],
'lines': [
["Open_files", "files", "absolute"]
]},
'files_rate': {
'options': [None, 'mysql Opened Files Rate', 'files/s', 'files', 'mysql.files_rate', 'line'],
'lines': [
["Opened_files", "files", "incremental"]
]},
'binlog_stmt_cache': {
'options': [None, 'mysql Binlog Statement Cache', 'statements/s', 'binlog', 'mysql.binlog_stmt_cache', 'line'],
'lines': [
["Binlog_stmt_cache_disk_use", "disk", "incremental"],
["Binlog_stmt_cache_use", "all", "incremental"]
]},
'connection_errors': {
'options': [None, 'mysql Connection Errors', 'connections/s', 'connections', 'mysql.connection_errors', 'line'],
'lines': [
["Connection_errors_accept", "accept", "incremental"],
["Connection_errors_internal", "internal", "incremental"],
["Connection_errors_max_connections", "max", "incremental"],
["Connection_errors_peer_address", "peer_addr", "incremental"],
["Connection_errors_select", "select", "incremental"],
["Connection_errors_tcpwrap", "tcpwrap", "incremental"]
]}
}
class Service(SimpleService):
def __init__(self, configuration=None, name=None):
SimpleService.__init__(self, configuration=configuration, name=name)
self._parse_config(configuration)
self.order = ORDER
self.definitions = CHARTS
self.connection = None
def _parse_config(self, configuration):
"""
Parse configuration to collect data from MySQL server
:param configuration: dict
:return: dict
"""
parameters = {}
if self.name is None:
self.name = 'local'
if 'user' in configuration:
parameters['user'] = self.configuration['user']
if 'pass' in configuration:
parameters['passwd'] = self.configuration['pass']
if 'my.cnf' in configuration:
parameters['read_default_file'] = self.configuration['my.cnf']
elif 'socket' in configuration:
parameters['unix_socket'] = self.configuration['socket']
elif 'host' in configuration:
parameters['host'] = self.configuration['host']
if 'port' in configuration:
parameters['port'] = int(self.configuration['port'])
self.connection_parameters = parameters
def _connect(self):
"""
Try to connect to MySQL server
"""
try:
self.connection = MySQLdb.connect(connect_timeout=self.update_every, **self.connection_parameters)
except MySQLdb.OperationalError as e:
self.error("Cannot establish connection to MySQL.")
self.debug(str(e))
raise RuntimeError
except Exception as e:
self.error("problem connecting to server:", e)
raise RuntimeError
def _get_data(self):
"""
Get raw data from MySQL server
:return: dict
"""
if self.connection is None:
try:
self._connect()
except RuntimeError:
return None
try:
cursor = self.connection.cursor()
cursor.execute(QUERY)
raw_data = cursor.fetchall()
except MySQLdb.OperationalError as e:
self.debug("Reconnecting due to", str(e))
self._connect()
cursor = self.connection.cursor()
cursor.execute(QUERY)
raw_data = cursor.fetchall()
except Exception as e:
self.error("cannot execute query.", e)
self.connection.close()
self.connection = None
return None
data = dict(raw_data)
try:
data["Thread_cache_misses"] = int(data["Threads_created"] * 10000 / float(data["Connections"]))
except:
data["Thread_cache_misses"] = 0
return data
def check(self):
"""
Check if service is able to connect to server
:return: boolean
"""
try:
self.connection = self._connect()
return True
except RuntimeError:
self.connection = None
return False