监控redis多实例的负载情况

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，写的有点仓促，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 git
git clone git://github.com/hyperic/sigar.git sigar.git
./autogen.sh
./configure
make
make install
cd bindings/python/
python setup.py install
'''
'''
建库sql
CREATE TABLE redis_stats (
id int(11) NOT NULL AUTOINCREMENT,
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 CURRENTTIMESTAMP ON UPDATE CURRENTTIMESTAMP,
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 hostname,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 e
def 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 '\r\n'" % (host,port)).readlines()
dirc = {}
for i in aaa:
if i != '\r\n':
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 = 5
while 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") + ""*20
print "\033[1;31;40m%s\033[0m" % text
threads = []
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 "\033[1;35;40m%s\033[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 = 0
All_clients = 0
res.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 "\033[1;35;40m%s\033[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)
print
break
if __name == "__main":
main()

效果如图：