def __init__(self, argv=(), env=None, debug=False):
"""Populate Munin Plugin with MuninGraph instances.
@param argv: List of command line arguments.
@param env: Dictionary of environment variables.
@param debug: Print debugging messages if True. (Default: False)
"""
MuninPlugin.__init__(self, argv, env, debug)
self._instance = self.envGet('instance')
self._category = 'Varnish'
varnish_info = VarnishInfo(self._instance)
self._stats = varnish_info.getStats()
self._desc = varnish_info.getDescDict()
graph_name = 'varnish_requests'
if self.graphEnabled(graph_name):
graph = MuninGraph(
'Varnish - Client/Backend Requests / sec',
self._category,
info=
'Number of client and backend requests per second for Varnish Cache.',
args='--base 1000 --lower-limit 0')
for flabel in (
'client',
'backend',
):
fname = '%s_req' % flabel
finfo = self._desc.get(fname, '')
graph.addField(fname,
flabel,
draw='LINE2',
type='DERIVE',
min=0,
info=finfo)
self.appendGraph(graph_name, graph)
graph_name = 'varnish_hits'
if self.graphEnabled(graph_name):
graph = MuninGraph(
'Varnish - Cache Hits vs. Misses (%)',
self._category,
info='Number of Cache Hits and Misses per second.',
args='--base 1000 --lower-limit 0')
for flabel, fname in (('hit', 'cache_hit'),
('pass', 'cache_hitpass'), ('miss',
'cache_miss')):
finfo = self._desc.get(fname, '')
graph.addField(fname,
flabel,
draw='AREASTACK',
type='DERIVE',
min=0,
info=finfo)
self.appendGraph(graph_name, graph)
graph_name = 'varnish_client_conn'
if self.graphEnabled(graph_name):
graph = MuninGraph(
'Varnish - Client Connections / sec',
self._category,
info='Client connections per second for Varnish Cache.',
args='--base 1000 --lower-limit 0')
for flabel in (
'conn',
'drop',
):
fname = 'client_%s' % flabel
finfo = self._desc.get(fname, '')
graph.addField(fname,
flabel,
draw='AREASTACK',
type='DERIVE',
min=0,
info=finfo)
self.appendGraph(graph_name, graph)
graph_name = 'varnish_backend_conn'
if self.graphEnabled(graph_name):
graph = MuninGraph(
'Varnish - Backend Connections / sec',
self._category,
info='Connections per second from Varnish Cache to backends.',
args='--base 1000 --lower-limit 0')
for flabel in (
'conn',
'reuse',
'busy',
'fail',
'retry',
'unhealthy',
):
fname = 'backend_%s' % flabel
finfo = self._desc.get(fname, '')
graph.addField(fname,
flabel,
draw='AREASTACK',
type='DERIVE',
min=0,
info=finfo)
self.appendGraph(graph_name, graph)
graph_name = 'varnish_traffic'
if self.graphEnabled(graph_name):
graph = MuninGraph('Varnish - Traffic (bytes/sec)',
self._category,
info='HTTP Header and Body traffic. '
'(TCP/IP overhead not included.)',
args='--base 1024 --lower-limit 0')
for flabel, fname in (
('header', 's_hdrbytes'),
('body', 's_bodybytes'),
):
finfo = self._desc.get(fname, '')
graph.addField(fname,
flabel,
draw='AREASTACK',
type='DERIVE',
min=0,
info=finfo)
self.appendGraph(graph_name, graph)
graph_name = 'varnish_workers'
if self.graphEnabled(graph_name):
graph = MuninGraph('Varnish - Worker Threads',
self._category,
info='Number of worker threads.',
args='--base 1000 --lower-limit 0')
fname = 'n_wrk'
flabel = 'req'
finfo = self._desc.get(fname, '')
graph.addField(fname,
flabel,
draw='LINE2',
type='GAUGE',
min=0,
info=finfo)
self.appendGraph(graph_name, graph)
graph_name = 'varnish_work_queue'
if self.graphEnabled(graph_name):
graph = MuninGraph(
'Varnish - Queued/Dropped Work Requests / sec',
self._category,
info='Requests queued for waiting for a worker thread to become '
'available and requests dropped because of overflow of queue.',
args='--base 1000 --lower-limit 0')
for flabel, fname in (('queued', 'n_wrk_queued'), ('dropped',
'n_wrk_drop')):
finfo = self._desc.get(fname, '')
graph.addField(fname,
flabel,
draw='LINE2',
type='DERIVE',
min=0,
info=finfo)
self.appendGraph(graph_name, graph)
graph_name = 'varnish_memory'
if self.graphEnabled(graph_name):
graph = MuninGraph('Varnish - Cache Memory Usage (bytes)',
self._category,
info='Varnish cache memory usage in bytes.',
args='--base 1024 --lower-limit 0')
for flabel, fname in (('used', 'SMA_s0_g_bytes'),
('free', 'SMA_s0_g_space')):
finfo = self._desc.get(fname, '')
graph.addField(fname,
flabel,
draw='AREASTACK',
type='GAUGE',
min=0,
info=finfo)
self.appendGraph(graph_name, graph)
graph_name = 'varnish_expire_purge'
if self.graphEnabled(graph_name):
graph = MuninGraph(
'Varnish - Expired/Purged Objects / sec',
self._category,
info='Expired objects and LRU purged objects per second.',
args='--base 1000 --lower-limit 0')
for flabel, fname in (('expire', 'n_expired'), ('purge',
'n_lru_nuked')):
finfo = self._desc.get(fname, '')
graph.addField(fname,
flabel,
draw='LINE2',
type='DERIVE',
min=0,
info=finfo)
self.appendGraph(graph_name, graph)
def __init__(self, argv=(), env=None, debug=False):
"""Populate Munin Plugin with MuninGraph instances.
@param argv: List of command line arguments.
@param env: Dictionary of environment variables.
@param debug: Print debugging messages if True. (Default: False)
"""
MuninPlugin.__init__(self, argv, env, debug)
self._instance = self.envGet('instance')
self._category = 'Varnish'
varnish_info = VarnishInfo(self._instance)
self._stats = varnish_info.getStats()
self._desc = varnish_info.getDescDict()
graph_name = 'varnish_client_conn'
if self.graphEnabled(graph_name):
graph = MuninGraph(
'Varnish - Client Connections / sec',
self._category,
info='Client connections per second for Varnish Cache.',
args='--base 1000 --lower-limit 0')
graph.addField('client_conn',
'conn',
draw='LINE2',
type='DERIVE',
min=0,
info=self._desc.get('client_conn'))
graph.addField('client_drop',
'drop',
draw='LINE2',
type='DERIVE',
min=0,
info=self._desc.get('client_drop'))
self.appendGraph(graph_name, graph)
graph_name = 'varnish_client_requests'
if self.graphEnabled(graph_name):
graph = MuninGraph('Varnish - Client Requests / sec',
self._category,
info='Requests per second to Varnish Cache.',
args='--base 1000 --lower-limit 0')
graph.addField('client_req',
'reqs',
draw='LINE2',
type='DERIVE',
min=0,
info=self._desc.get('client_req'))
self.appendGraph(graph_name, graph)
graph_name = 'varnish_backend_conn'
if self.graphEnabled(graph_name):
graph = MuninGraph(
'Varnish - Backend Connections / sec',
self._category,
info='Connections per second from Varnish Cache to backends.',
args='--base 1000 --lower-limit 0')
graph.addField('backend_conn',
'conn',
draw='LINE2',
type='DERIVE',
min=0,
info=self._desc.get('backend_conn'))
self.appendGraph(graph_name, graph)
graph_name = 'varnish_backend_requests'
if self.graphEnabled(graph_name):
graph = MuninGraph(
'Varnish - Backend Requests / sec',
self._category,
info='Requests per second from Varnish Cache to backends.',
args='--base 1000 --lower-limit 0')
graph.addField('backend_req',
'reqs',
draw='LINE2',
type='DERIVE',
min=0,
info=self._desc.get('backend_req'))
self.appendGraph(graph_name, graph)
graph_name = 'varnish_traffic'
if self.graphEnabled(graph_name):
graph = MuninGraph('Varnish - Traffic (bytes/sec)',
self._category,
info='HTTP Header and Body traffic. '
'(TCP/IP overhead not included.)',
args='--base 1000 --lower-limit 0')
graph.addField('s_hdrbytes',
'header',
draw='AREASTACK',
type='DERIVE',
min=0,
info=self._desc.get('s_hdrbytes'))
graph.addField('s_bodybytes',
'body',
draw='AREASTACK',
type='DERIVE',
min=0,
info=self._desc.get('s_bodybytes'))
self.appendGraph(graph_name, graph)
graph_name = 'varnish_workers'
if self.graphEnabled(graph_name):
graph = MuninGraph('Varnish - Worker Threads',
self._category,
info='Number of worker threads.',
args='--base 1000 --lower-limit 0')
graph.addField('cache_hit',
'hit',
draw='AREASTACK',
type='DERIVE',
min=0,
info=self._desc.get('cache_hit'))
graph.addField('cache_hitpass',
'pass',
draw='AREASTACK',
type='DERIVE',
min=0,
info=self._desc.get('cache_hitpass'))
graph.addField('cache_miss',
'miss',
draw='AREASTACK',
type='DERIVE',
min=0,
info=self._desc.get('cache_miss'))
self.appendGraph(graph_name, graph)
graph_name = 'varnish_hits'
if self.graphEnabled(graph_name):
graph = MuninGraph(
'Varnish - Cache Hits vs. Misses',
self._category,
info='Number of Cache Hits and Misses por second.',
args='--base 1000 --lower-limit 0')
graph.addField('n_wrk',
'req',
draw='AREASTACK',
type='DERIVE',
min=0,
info=self._desc.get('n_wrk'))
self.appendGraph(graph_name, graph)