python-Redis cluster基础指标监控

  1 #!/usr/local/python/shims/python
  2 from rediscluster import StrictRedisCluster
  3 ‘‘‘
  4 需要在宿主机python中安装rediscluster
  5 pip install rediscluster
  6 ‘‘‘
  7 
  8 import redis
  9 import sys
 10 import mylog
 11 redis_nodes =  [{‘host‘:‘ip‘,‘port‘:port},
 12                 {‘host‘:‘ip‘,‘port‘:port},
 13                 {‘host‘:‘ip‘,‘port‘:port},
 14                 {‘host‘:‘ip‘,‘port‘:port},
 15                 {‘host‘:‘ip‘,‘port‘:port},
 16                 {‘host‘:‘ip‘,‘port‘:port},
 17                    ]
 18 
 19 ###
 20 进入redis集群模式，如果异常，记录到日志中，并终止脚本
 21 ###
 22 
 23 try:
 24     redisconn = StrictRedisCluster(startup_nodes=redis_nodes,password=‘pwd‘)
 25     
 26 except Exception,e:
 27     mylog.logging.error(‘%s‘ %e )
 28     sys.exit(0)
 29 
 30 ###
 31 定义参数
 32 ###
 33 
 34 
 35 data = {}
 36 NodeData = {}
 37 hit = 0
 38 misshit = 0
 39 hitrate = 0.00
 40 
 41 ###
 42 定义函数，抓取监控项
 43 ###
 44 
 45 
 46 def ClusterState(item):
 47     cluster_state = redisconn.execute_command(‘cluster‘,‘info‘)
 48     cluster_state = cluster_state.split(‘\r\n‘)
 49     try:
 50         for i in cluster_state:
 51             data[i.split(‘:‘)[0]] = i.split(‘:‘)[1]
 52     except:
 53         pass
 54     if  item == ‘clusterstatus‘:
 55         state = data[‘cluster_state‘]
 56         if state == ‘ok‘ :
 57             item = 1
 58         else:
 59             item = 0
 60         return item
 61 
 62     elif item == ‘clusterslotsfail‘:
 63         item = data[‘cluster_slots_fail‘]
 64         return item  
 65 
 66     elif item == ‘clusterknownnodes‘:
 67         item = data[‘cluster_known_nodes‘]
 68         return item
 69     else:
 70         return 9999
 71 def NodeInfoServer(item):
 72     node_info = redisconn.info(‘Server‘)
 73     NodeData = node_info[‘ip:port‘]
 74     if item == ‘uptime_in_days‘:
 75         item = NodeData[‘uptime_in_days‘]
 76         return item
 77     else:
 78         return 9999   
 79     
 80 def NodeInfoClients(item):
 81     node_info = redisconn.info(‘Clients‘)
 82     NodeData = node_info[‘ip:port‘]
 83     if item == ‘connected_clients‘:
 84         item = NodeData[‘connected_clients‘]
 85         return item
 86     else:
 87         return 9999
 88 
 89 def NodeInfoMemory(item):
 90     node_info = redisconn.info(‘Memory‘)
 91     NodeData = node_info[‘ip:port‘]
 92     if item == ‘used_memory_human‘:
 93         item = NodeData[‘used_memory_human‘]
 94         return item
 95     elif item == ‘total_system_memory_human‘:
 96         item = NodeData[‘total_system_memory_human‘]
 97         return item
 98     else:
 99         return 9999
100 
101 def NodeInfoPersistence(item):
102     node_info = redisconn.info(‘Persistence‘)
103     NodeData = node_info[‘ip:port‘]
104     
105     if item == ‘rdb_last_bgsave_status‘:
106         item = NodeData[‘rdb_last_bgsave_status‘]    
107         if item == ‘ok‘ :
108             item = 1
109         else:
110             item = 0
111         return item
112     else:
113         return 9999
114 
115 def NodeInfoStats(item):
116     node_info = redisconn.info(‘Stats‘)
117     NodeData = node_info[‘ip:port‘]
118     if item == ‘instantaneous_ops_per_sec‘:
119         item = NodeData[‘instantaneous_ops_per_sec‘]
120         return item
121     elif item == ‘instantaneous_input_kbps‘:
122         item = NodeData[‘instantaneous_input_kbps‘]
123         return item
124     elif item == ‘instantaneous_output_kbps‘:
125         item = NodeData[‘instantaneous_output_kbps‘]
126         return item
127     elif item == ‘hit‘:
128         hit =  NodeData[‘keyspace_hits‘] 
129         misshit = NodeData[‘keyspace_misses‘]
130         hitrate = round((float(hit) / float(hit + misshit)) ,3)
131         item = hitrate
132         return item        
133     else:
134         return 9999
135 
136 ###
137 脚本传参，zabbix获取监控项
138 ###
139 
140 if sys.argv[1] == ‘status‘:
141      print ClusterState(‘clusterstatus‘)
142 elif sys.argv[1] == ‘slotsfail‘: 
143      print ClusterState(‘clusterslotsfail‘)
144 elif sys.argv[1] == ‘nodes‘:
145      print ClusterState(‘clusterknownnodes‘)
146 elif sys.argv[1] == ‘day‘:
147      print NodeInfoServer(‘uptime_in_days‘)
148 elif sys.argv[1] == ‘clients‘:
149      print NodeInfoClients(‘connected_clients‘)
150 elif sys.argv[1] == ‘usememory‘:
151      print NodeInfoMemory(‘used_memory_human‘)
152 elif sys.argv[1] == ‘sysmemory‘:
153      print NodeInfoMemory(‘total_system_memory_human‘)
154 elif sys.argv[1] == ‘rdb‘:
155      print NodeInfoPersistence(‘rdb_last_bgsave_status‘)
156 elif sys.argv[1] == ‘ops‘:
157      print NodeInfoStats(‘instantaneous_ops_per_sec‘)
158 elif sys.argv[1] == ‘input_kbps‘:
159      print NodeInfoStats(‘instantaneous_input_kbps‘)
160 elif sys.argv[1] == ‘output_kbps‘:
161      print NodeInfoStats(‘instantaneous_output_kbps‘)
162 elif sys.argv[1] == ‘hit‘:
163      print NodeInfoStats(‘hit‘)