| JAVA-GATEWAY Zabbix本身不支持直接监控Java，在zabbix 1.8以前，只能使用Zapcat来做代理监控，而且要修改源代码，非常麻烦。所有后来为了解决这个监控问题，Zabbix和Java双方应运生成了各自的代理监控程序：zabbix 2.0以后添加了服务进程zabbix-java-gateway；Java有了JMX,全称是Java Management Extensions,即Java管理扩展 
比如：当Zabbix-Server需要知道java应用程序的某项性能的时候，会启动自身的一个Zabbix-JavaPollers进程去连接Zabbix-JavaGateway请求数据，而ZabbixJavagateway收到请求后使用“JMXmanagementAPI”去查询特定的应用程序，而前提是应用程序这端在开启时需要“-Dcom.sun.management.jmxremote”参数来开启JMX远程查询就行。Java程序会启动自身的一个简单的小程序端口12345向Zabbix-JavaGateway提供请求数据。
开始监控部署
从上面的原理图中我们可以看出，配置Zabbix监控Java应用程序的关键点在于：配置Zabbix-JavaGateway、让Zabbix-Server能够连接Zabbix-JavaGateway、Tomcat开启JVM远程监控功能等
网上的大多数文章都配置的是被动模式（即zabbix server 去想java进程去取数据），这样会造成zabbix server的压力过大，所以应该采用主动模式（写一个zabbix类，然后主动去上报数据） 代码如下： zabbix.py cat zabbix.py
#!/usr/bin/python
import os
import time
import socket
import struct
import cPickle
import logging
try:
from hashlib import sha1
except ImportError:
from sha import sha as sha1
try:
import json
except ImportError:
import simplejson as json
DUMP = ‘dump‘
if not os.path.isdir(DUMP):
os.makedirs(DUMP, mode=0755)
class Zabbix(object):
logger = logging.getLogger(‘zabbix‘)
def __init__(self, values=None):
if values is not None:
self.__dict__[‘values‘] = values
def __getattr__(self, name):
if name in (‘values‘):
return self.__dict__[name]
return None
def __setattr__(self, name, value):
if name == ‘values‘:
self.__dict__[name] = value
def gen_request(self, jsons):
if isinstance(jsons, basestring):
data = ‘%s\n‘ % jsons
else:
data = json.dumps(jsons)
header = ‘ZBXD\x01‘
datalen = struct.pack(‘Q‘, len(data))
return header + datalen + data
def dump(self, host, port, jsons):
data = {‘host‘: host, ‘port‘: port, ‘jsons‘: jsons}
hash = sha1(json.dumps(data)).hexdigest()
path = ‘%s.%s.%d.%s.error‘ % (host, port, int(time.time()), hash)
try:
write = open(os.path.join(DUMP, path), ‘wb‘)
cPickle.dump(data, write, -1)
write.close()
except:
self.logger.exception(‘cannot dump to file %s‘, path)
def get_zbx_result(self, host, port, jsons):
retry = 3
while retry:
try:
data = self._get_zbx_result(host, port, jsons)
if data is None:
break
return data
except socket.error:
self.logger.exception(‘cannot communit with zabbix‘)
time.sleep(5)
retry -= 1
self.logger.error(‘cannot send data to zabbix server‘)
self.dump(host, port, jsons)
def _get_zbx_result(self, host, port, jsons):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print host,port,jsons
sock.connect((host, port))
sock.send(self.gen_request(jsons))
print "send %s" % self.gen_request(jsons)
self.logger.debug(‘sent %s‘, jsons)
recv = sock.recv(5)
if recv != ‘ZBXD\x01‘:
self.logger.error(‘Invalid Response‘)
self.dump(host, port, jsons)
return None
recv = sock.recv(8)
(datalen,) = struct.unpack(‘Q‘, recv)
data = sock.recv(datalen)
sock.close()
self.logger.debug(‘received %s‘, data)
return data
def getvalue(self):
# shoulde be {host: {key: value}}
return self.values
def run(self):
hostvalues = self.getvalue()
if not isinstance(hostvalues, dict):
self.logger.error(‘invalid hostvalues: %s‘, str(hostvalues))
return False
clock = int(time.time())
jsons = {
‘request‘: ‘agent data‘,
‘data‘: [],
‘clock‘: clock,
}
data = jsons[‘data‘]
for host, values in hostvalues.iteritems():
for key, value in values.iteritems():
data.append({
‘host‘: host,
‘key‘: key,
‘value‘: value,
‘clock‘: clock,
})
return self.get_zbx_result(ZBX_HOST, ZBX_PORT, jsons)
def getjmx(self, host, port, keys):
jsons = {
‘request‘: ‘java gateway jmx‘,
‘conn‘: host,
‘port‘: port,
‘keys‘: keys,
}
return self.get_zbx_result(JMX_HOST, JMX_PORT, jsons)
ZBX_HOST = ‘zabbix.server.com‘
ZBX_PORT = 10051
JMX_HOST = ‘localhost‘
JMX_PORT = 10052
handler = logging.FileHandler(filename=‘/tmp/zabbix.%s.log‘ % time.strftime(‘%Y%m%d‘), mode=‘a‘)
formatter = logging.Formatter(‘%(asctime)s %(name)s %(lineno)s %(levelname)s %(message)s‘)
handler.setFormatter(formatter)
logger = logging.getLogger()
logger.addHandler(handler)
logger.setLevel(logging.DEBUG)
if __name__ == ‘__main__‘:
zbx = Zabbix()
print zbx.getjmx(‘localhost‘, 8081, [‘jmx["Standalone:type=Manager,path=/,host=localhost",activeSessions]‘, ‘jmx["java.lang:type=Runtime",Uptime]‘, ‘jmx["Catalina:type=GlobalRequestProcessor,name=\\"http-bio-8080\\"",bytesSent]‘])
pass
cat zabbix_wiki_node1_java.py #!/usr/bin/env python
#fileencoding: utf-8
ITEMS = [
‘jmx["java.lang:type=ClassLoading",LoadedClassCount]‘,
‘jmx["java.lang:type=ClassLoading",TotalLoadedClassCount]‘,
‘jmx["java.lang:type=ClassLoading",UnloadedClassCount]‘,
‘jmx["java.lang:type=Memory",HeapMemoryUsage.committed]‘,
‘jmx["java.lang:type=Memory",HeapMemoryUsage.max]‘,
‘jmx["java.lang:type=Memory",HeapMemoryUsage.used]‘,
‘jmx["java.lang:type=Memory",NonHeapMemoryUsage.committed]‘,
‘jmx["java.lang:type=Memory",NonHeapMemoryUsage.max]‘,
‘jmx["java.lang:type=Memory",NonHeapMemoryUsage.used]‘,
‘jmx["java.lang:type=MemoryPool,name=Code Cache",Usage.committed]‘,
‘jmx["java.lang:type=MemoryPool,name=Code Cache",Usage.max]‘,
‘jmx["java.lang:type=MemoryPool,name=Code Cache",Usage.used]‘,
‘jmx["java.lang:type=MemoryPool,name=PS Eden Space",Usage.committed]‘,
‘jmx["java.lang:type=MemoryPool,name=PS Eden Space",Usage.max]‘,
‘jmx["java.lang:type=MemoryPool,name=PS Eden Space",Usage.used]‘,
‘jmx["java.lang:type=MemoryPool,name=PS Old Gen",Usage.committed]‘,
‘jmx["java.lang:type=MemoryPool,name=PS Old Gen",Usage.max]‘,
‘jmx["java.lang:type=MemoryPool,name=PS Old Gen",Usage.used]‘,
‘jmx["java.lang:type=MemoryPool,name=PS Perm Gen",Usage.committed]‘,
‘jmx["java.lang:type=MemoryPool,name=PS Perm Gen",Usage.max]‘,
‘jmx["java.lang:type=MemoryPool,name=PS Perm Gen",Usage.used]‘,
‘jmx["java.lang:type=MemoryPool,name=PS Survivor Space",Usage.committed]‘,
‘jmx["java.lang:type=MemoryPool,name=PS Survivor Space",Usage.max]‘,
‘jmx["java.lang:type=MemoryPool,name=PS Survivor Space",Usage.used]‘,
‘jmx["java.lang:type=OperatingSystem",MaxFileDescriptorCount]‘,
‘jmx["java.lang:type=OperatingSystem",OpenFileDescriptorCount]‘,
‘jmx["java.lang:type=Runtime",Uptime]‘,
‘jmx["java.lang:type=Threading",DaemonThreadCount]‘,
‘jmx["java.lang:type=Threading",PeakThreadCount]‘,
‘jmx["java.lang:type=Threading",ThreadCount]‘,
‘jmx["java.lang:type=Threading",TotalStartedThreadCount]‘,
‘jmx["Standalone:type=GlobalRequestProcessor,name=http-8090",bytesReceived]‘,
‘jmx["Standalone:type=GlobalRequestProcessor,name=http-8090",bytesSent]‘,
‘jmx["Standalone:type=GlobalRequestProcessor,name=http-8090",errorCount]‘,
‘jmx["Standalone:type=GlobalRequestProcessor,name=http-8090",processingTime]‘,
‘jmx["Standalone:type=GlobalRequestProcessor,name=http-8090",requestCount]‘,
‘jmx["Standalone:type=Manager,path=/,host=localhost",activeSessions]‘,
‘jmx["Standalone:type=Manager,path=/,host=localhost",maxActiveSessions]‘,
‘jmx["Standalone:type=Manager,path=/,host=localhost",maxActive]‘,
‘jmx["Standalone:type=Manager,path=/,host=localhost",rejectedSessions]‘,
‘jmx["Standalone:type=Manager,path=/,host=localhost",sessionCounter]‘,
‘jmx["Standalone:type=ProtocolHandler,port=8090",compression]‘,
‘jmx["Standalone:type=ThreadPool,name=http-8090",currentThreadCount]‘,
‘jmx["Standalone:type=ThreadPool,name=http-8090",currentThreadsBusy]‘,
‘jmx["Standalone:type=ThreadPool,name=http-8090",maxThreads]‘,
]
from zabbix import Zabbix
from zabbix import json
def getjmxkey(key):
# key = key.replace(‘http-8080‘, ‘\\"http-bio-8080\\"‘)
# key = key.replace(‘path=/‘, ‘context=/‘)
return key
def getjmxvalue(value):
if isinstance(value, dict):
return value.get(‘value‘, u‘‘).encode(‘utf8‘)
return ‘‘
if __name__ == ‘__main__‘:
host = ‘it-tw01‘
zbx = Zabbix()
jmxkeys = [getjmxkey(x) for x in ITEMS]
data = zbx.getjmx(‘it-tw01‘, ‘8410‘, jmxkeys)
try:
results = json.loads(data)
except:
results = {}
if isinstance(results, dict) and results[‘response‘] == ‘success‘:
jmxvalues = [getjmxvalue(x) for x in results.get(‘data‘, [])]
hostvalues = {host: dict(zip(ITEMS, jmxvalues))}
Zabbix(hostvalues).run()
# vim: set sta sw=4 et:
crontab
* * * * * /home/sankuai/monitor/zabbix_wiki_node1_java.py
zabbix /etc/zabbix# ls zabbix_agentd.conf zabbix_agentd.confn-place zabbix_agentd.d zabbix_java_gateway.conf
it-tw01需要关联的模板见附件
特别注意： 编译安装zabbix server需要加上--enable-java以支持jmx监控，如果之前的zabbix server没加，那么请重新编译安装，参考编译参数 安装软件 yum install -y java java-devel zabbix-java-gateway 更多的请参考这个文章：http://www.iyunv.com/thread-269939-1-1.html
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