单个服务器上创建多实例，对其重要参数的监控是非常重要的，以下是监控服务器上多实例的负载情况：主要包含：redis实例的QPS、内存使用情况、客户端连接数，服务
单个服务器上创建多实例，对其重要参数的监控是非常重要的，以下是监控服务器上多实例的负载情况：主要包含：redis实例的qps、内存使用情况、客户端连接数，服务器的内存使用率、cpu使用率、cpu load值、网卡流量等，脚本把采集到的数据显示并且写入到数据库中，方便查看多个服务器的多实例情况以及数据的汇总等，写的优点仓促，有兴趣的同学可以整理一下脚本使其模块化、简洁化。脚本如下：
#!/usr/bin/env python#-*-coding:UTF-8-*-import os,threading,time,sys,sigar,MySQLdb”’安装python的sigar模块apt-get install libtool automake gettext python-MySQLdb screen pkg-config gitgit clone git://github.com/hyperic/sigar.git sigar.git./autogen.sh./configuremakemake installcd bindings/python/python setup.py install”””建库sqlCREATE TABLE `redis_stats` ( `id` int(11) NOT NULL AUTO_INCREMENT, `host_name` varchar(50) NOT NULL, `qps` int(11) NOT NULL, `clients` int(11) NOT NULL, `redis_mem_used` varchar(50) NOT NULL, `sys_mem_used_pers` float NOT NULL, `cpu_used` float NOT NULL, `cpu_load` varchar(50) NOT NULL, `netband` varchar(255) NOT NULL, `uptime` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, PRIMARY KEY (`id`), KEY `host_name` (`host_name`), KEY `uptime` (`uptime`)) ENGINE=InnoDB DEFAULT CHARSET=utf8查询每个实例的最新记录select host_name,qps,clients,redis_mem_used,concat(sys_mem_used_pers,’%’) as sys_mem_used,concat(cpu_used,’%’) as cpu_used,cpu_load,netband from DBA.redis_stats group by host_name desc order by qps desc;”’def log2db(check_log):log_host = ‘192.168.56.101’log_user = ‘root’log_pass = ‘1q2w3e4r’try:conn = MySQLdb.connect(host = log_host,port = 3306,user = log_user,passwd = log_pass,charset=’utf8’,connect_timeout=20)cursor = conn.cursor()#cursor.execute(insert_sql)cursor.executemany(“INSERT INTO redis.redis_stats (`host_name`,`qps`,`clients`,`redis_mem_used`,`sys_mem_used_pers`,`cpu_used`,`cpu_load`,`netband`) VALUES (%s,%s,%s,%s,%s,%s,%s,%s)”,tuple(check_log))conn.commit()cursor.close()conn.close()except Exception,e:print edef redis_info(host,port,res):var = []var.append(host)var.append(port)aaa = os.popen(“redis-cli -h %s -p %s info|grep -v ‘#’|tr -s ‘rn'” % (host,port)).readlines()dirc = {}for i in aaa:if i != ‘rn’:a = i.strip()aa = a.split(“:”)dirc[aa[0]]=aa[1]var.append(dirc[“connected_clients”])var.append(dirc[“instantaneous_ops_per_sec”])var.append(dirc[“used_memory_human”])res.append(var)def main():netband = {}stime = 5while True:try:sg = sigar.open()mem = sg.mem()#内存mem_percent = “%.2f” % mem.used_percent()cpu = sg.cpu()#CPU总的使用率cpu_idle = “%.2f” % ((1-float(cpu.idle())/cpu.total())*100)loadavg = sg.loadavg()#CPU load值cpu_loadavg = ‘,’.join([str(i) for i in loadavg])#nets = [i for i in sg.net_interface_list() if ‘dum’ not in i and i != ‘lo’]#网卡流量统计nets = [i.strip() for i in os.popen(“/bin/ip a|grep global|awk ‘{print $7}'”).readlines() if i.strip() != ”]if len(netband) != 0:for net in nets:netband[net+’_Out’] = “%.2f” % (float((sg.net_interface_stat(net).tx_bytes()) – int(netband[net+’_Out’]))/stime/1024/1024)netband[net+’_In’] = “%.2f” % (float((sg.net_interface_stat(net).rx_bytes()) – int(netband[net+’_In’]))/stime/1024/1024)else:for net in nets:netband[net+’_Out’] = “%.2f” % (float(sg.net_interface_stat(net).tx_bytes())/stime/1024/1024)netband[net+’_In’] = “%.2f” % (float(sg.net_interface_stat(net).rx_bytes())/stime/1024/1024)redis_list = [‘192.168.56.101:6379′,’192.168.1.87:16379’]text = “*”*20 + ” Redis Status %s ” % time.strftime(“%Y-%m-%d %H:%M:%S”) + “*”*20print “ 33[1;31;40m%s 33[0m” % textthreads = []res = []for i in redis_list:aa = i.split(‘:’)host = aa[0]port = aa[1]t = threading.Thread(target=redis_info,args=(host,port,res))threads.append(t)for i in range(len(threads)):threads[i].start()for i in range(len(threads)):threads[i].join()print “ 33[1;35;40m%s 33[0m” % (“Redis_host:port”.ljust(23)+”Redis:QPS”.ljust(10)+”Redis:Clients”.ljust(15)+”Redis:Mem_used”.ljust(15)+”Mem_percent”.ljust(12)+”Cpu_used”.ljust(10)+”Cpu_loadavg”.ljust(17))All_qps = 0All_clients = 0res.sort()check_log = []for i in res:log = [i[0]+’:’+i[1],int(i[3]),int(i[2]),i[4],float(mem_percent),float(cpu_idle),cpu_loadavg,str(netband)]check_log.append(log)print (i[0]+’:’+i[1]).ljust(23)+i[3].ljust(10)+i[2].ljust(15)+i[4].ljust(15)+mem_percent.ljust(12)+cpu_idle.ljust(10)+cpu_loadavg.ljust(17)+str(netband)All_qps = All_qps + int(i[3])All_clients = All_clients + int(i[2])log2db(check_log)print “ 33[1;35;40m%s 33[0m” % (“Summary All host:”.ljust(23)+str(All_qps).ljust(10)+str(All_clients).ljust(10))netband = {}for net in nets:netband[net+’_Out’] = sg.net_interface_stat(net).tx_bytes()netband[net+’_In’] = sg.net_interface_stat(net).rx_bytes()time.sleep(stime)except KeyboardInterrupt :sys.exit(0)printbreakif __name__ == “__main__”:main()
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