Zabbix API 與 PHP 的配置
因?yàn)樽罱€上的Hadoop集群從mrv1升級到mrv2了,監(jiān)控模板也跟著變動(dòng)了。線上是200臺左右的集群,模塊采用了link的方式來添加,即一個(gè)模板下link大量的模塊,然后主機(jī)添加到這個(gè)模板里。
這樣算下來一臺機(jī)器差不多有 215個(gè)item。
為了增加NM的監(jiān)控,也采用了link的方式來連接模板,在頁面上link時(shí)發(fā)現(xiàn)一直返回一個(gè)空白頁。
為了快速上線,改變了下方法,使用了host.update的api,直接把host link到NM的模板。
回過頭來看這個(gè)問題:
在通過頁面link模板時(shí),其實(shí)也是調(diào)用了zabbix template相關(guān)的api(具體調(diào)用了template.update方法)
直接通過腳本來調(diào)用api測試:
測試腳本:
- #!/usr/bin/env python
 - import urllib2
 - import sys
 - import json
 - def requestJason(url,values):
 - data = json.dumps(values)
 - print data
 - req = urllib2.Request(url, data, {'Content-Type': 'application/json-rpc'})
 - response = urllib2.urlopen(req, data)
 - data_get = response.read()
 - output = json.loads(data_get)
 - print output
 - try:
 - message = output['result']
 - except:
 - message = output['error']['data']
 - quit()
 - print json.dumps(message)
 - return output
 - def authenticate(url, username, password):
 - values = {'jsonrpc': '2.0',
 - 'method': 'user.login',
 - 'params': {
 - 'user': username,
 - 'password': password
 - },
 - 'id': '0'
 - }
 - idvalue = requestJason(url,values)
 - return idvalue['result']
 - def getTemplate(hostname,url,auth):
 - values = {'jsonrpc': '2.0',
 - 'method': 'template.get',
 - 'params': {
 - 'output': "extend",
 - 'filter': {
 - 'host': hostname
 - }
 - },
 - 'auth': auth,
 - 'id': '2'
 - }
 - output = requestJason(url,values)
 - print output['result'][0]['hostid']
 - return output['result'][0]['hostid']
 - def changeTemplate(idx,id_list,url,auth):
 - values = {'jsonrpc': '2.0',
 - 'method': 'template.update',
 - 'params': {
 - "templateid":idx,
 - "templates":id_list
 - },
 - 'auth': auth,
 - 'id': '2'
 - }
 - output = requestJason(url,values)
 - print output
 - def main():
 - id_list = []
 - hostname = "Vipshop_Template_OS_Linux_Hadoop_Datanode_Pro"
 - url = 'xxxx'
 - username = 'admin'
 - password = 'xxxx'
 - auth = authenticate(url, username, password)
 - idx = getTemplate(hostname,url,auth)
 - temlist = ['Vipshop_Template_LB_Tengine_8090','Vipshop_Template_Redis_6379','Vipshop_Template_Redis_6380','Vipshop_Template_Redis_6381','Vipshop_Template_Redis_6382','Vipshop_Template_Redis_6383']
 - for tem in temlist:
 - idtemp = getTemplate(tem,url,auth)
 - id_list.append({"templateid":idtemp})
 - print id_list
 - #id_list = [{"templateid":'10843'},{"templateid":"10554"},{"templateid":"10467"},{"templateid":"10560"},{"templateid":"10566"},{"templateid":"10105"}]
 - changeTemplate(idx,id_list,url,auth)
 - if __name__ == '__main__':
 - main()
 
腳本結(jié)果:
- urllib2.HTTPError: HTTP Error 500: Internal Server Error
 
因?yàn)閍pi其實(shí)是發(fā)送了一個(gè)jason格式的post請求,手動(dòng)使用curl來驗(yàn)證:
- curl -vvv -i -X POST -H 'Content-Type:application/json' -d
 - '{"params": {"templates": [{"templateid": "10117"}, {"templateid": "10132"}, {"templateid": "10133"}, {"templateid": "10134"},
 - {"templateid": "10135"}, {"templateid": "10136"}], "templateid": "10464"}, "jsonrpc": "2.0", "method": "template.update", "auth": "421a04b400e859834357b5681a586a5f", "id": "2"}'
 - http://zabbix.idc.vipshop.com/api_jsonrpc.php
 
返回500錯(cuò)誤(即后端php處理時(shí)遇到錯(cuò)誤導(dǎo)致),調(diào)整php的配置,把日志改成debug格式:
- php-fpm.conf:
 - log_level = debug
 
在error log中發(fā)現(xiàn)如下錯(cuò)誤:
- [04-May-2014 14:04:32.115189] WARNING: pid 6270, fpm_request_check_timed_out(), line 271: [pool www] child 6294, script '/apps/svr/zabbix/wwwroot/api_jsonrpc.php' (request: "POST /api_jsonrpc.php") executing too slow (1.269946 sec), logging
 - [04-May-2014 14:04:32.115327] DEBUG: pid 6270, fpm_got_signal(), line 72: received SIGCHLD
 - [04-May-2014 14:04:32.115371] NOTICE: pid 6270, fpm_children_bury(), line 227: child 6294 stopped for tracing
 - [04-May-2014 14:04:32.115385] NOTICE: pid 6270, fpm_php_trace(), line 142: about to trace 6294
 - [04-May-2014 14:04:32.115835] NOTICE: pid 6270, fpm_php_trace(), line 170: finished trace of 6294
 - [04-May-2014 14:04:32.115874] DEBUG: pid 6270, fpm_event_loop(), line 409: event module triggered 1 events
 - [04-May-2014 14:04:35.318614] WARNING: pid 6270, fpm_stdio_child_said(), line 166: [pool www] child 6294 said into stderr: "NOTICE: sapi_cgi_log_message(), line 663: PHP message: PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 512 bytes) in /apps/svr/zabbix/wwwroot/api/classes/CItem.php on line 1088"
 - [04-May-2014 14:04:35.318665] DEBUG: pid 6270, fpm_event_loop(), line 409: event module triggered 1 events
 
即在做link模板時(shí),需要把相關(guān)的數(shù)據(jù)放在php的內(nèi)存中,而默認(rèn)的設(shè)置是128M,如果在item和host比較多的時(shí)候,很容易就會超過這個(gè)限制。
更改為:
- memory_limit = 1280M
 
重新測試,返回了502 Bad Gateway錯(cuò)誤,即后端執(zhí)行超時(shí)導(dǎo)致。
- error log:
 - [04-May-2014 14:50:21.318071] WARNING: pid 4131, fpm_request_check_timed_out(), line 281: [pool www] child 4147, script '/apps/svr/zabbix/wwwroot/api_jsonrpc.php' (request: "POST /api_jsonrpc.php") execution timed out (10.030883 sec), terminating
 
執(zhí)行時(shí)間超過request_terminate_timeout 設(shè)置。導(dǎo)致502產(chǎn)生。
更改 request_terminate_timeout = 1800(默認(rèn)是10s),max_execution_time = 0(默認(rèn)30s),重新測試。ok.
小結(jié)
zabbix不同于一般的線上應(yīng)用,在調(diào)用api做更新時(shí),是一個(gè)batch的行為,對內(nèi)存和執(zhí)行時(shí)間有一定的要求。
因此要合理的設(shè)置php的相關(guān)參數(shù),在debug的時(shí)候調(diào)低日志級別并開啟slow log來方便定位問題。
















 
 
 
 
 
 
 