通过Zabbix API获取历史监控数据

浙江雁荡山

　　Zabbix API可以通过JSON RPC协议来获取历史数据。
　　可以采用脚本或者任何支持JSON RPC的工具来使用API。
　　基本请求格式
　　Zabbix API 简化的JSON请求如下：
　　{
　　"jsonrpc": "2.0",
　　"method": "method.name",
　　"params": {
　　"param_1_name": "param_1_value",
　　"param_2_name": "param_2_value"
　　},
　　"id": 1,
　　"auth": "a826fca79a0795ccc1224dc76329972f",
　　}
　　下面一行一行来看：
　　● "jsonrpc": "2.0"-这是标准的JSON RPC参数以标示协议版本。所有的请求都会保持不变。
　　● "method": "method.name"-这个参数定义了真实执行的操作。例如：host.create、item.update，history.get等等
　　● "params"-这里通过传递JSON对象来作为特定方法的参数。如果你希望创建监控项，"name"和"key_"参数是需要的，每个方法需要的参数在Zabbix API文档中都有描述。
　　● "id": 1-这个字段用于绑定JSON请求和响应。响应会跟请求有相同的"id"。在一次性发送多个请求时很有用，这些也不需要唯一或者连续
　　● "auth": "a826fca79a0795ccc1224dc76329972f"-这是一个认证令牌【authentication token】用以鉴别用户、访问API。这也是使用API进行相关操作的前提-获取认证ID。(以上为转载http://paperplane.ruhoh.com/zabbix/intro-to-zabbix-api/)
　　

　　实例：获取192.168.211.60从2014.2.19 14:00:00到2014.2.19 14:10:00的cpu idle值
　　基于curl命令：
　　（1）：认证并且取得加密字段
　　curl -i -X POST -H 'Content-Type: application/json' -d '{"jsonrpc":
　　"2.0","method":"user.login","params":{"user":"xxxx","password":"xxxx"},"auth":
　　null,"id":0}' http://x.x.x.x/api_jsonrpc.php
　　#之后会得到一串输出：{"jsonrpc":"2.0","result":"a826fca79a0795ccc1224dc76329972f","id":0}。记住这
　　段输出。
　　（2）获取监控主机的hostids
　　curl -i -X POST -H 'Content-Type: application/json' -d '{"jsonrpc": "2.0","method":"host.get","params":{"output":["hostid"],"filter": {"host":"192.168.211.60"}},"auth": "a826fca79a0795ccc1224dc76329972f","id": 0}' http://x.x.x.x/api_jsonrpc.php
　　#"hostid":"10243"
　　（3）获得监控项itemids
　　curl -i -X POST -H 'Content-Type: application/json' -d '{"jsonrpc": "2.0","method":"item.get","params":{"output":"itemids","hostids":"10243","search":{"key_":"system.cpu.util
　　[,idle,avg1]"}},"auth": "a826fca79a0795ccc1224dc76329972f","id": 0}' http://x.x.x.x/api_jsonrpc.php
　　#“item”:"24526"
　　(4)获取监控项"system.cpu.util[,idle,avg1]"在2014.2.19 14:00~14:20的值
　　curl -i -X POST -H 'Content-Type: application/json' -d '{"jsonrpc": "2.0","method":"history.get","params":{"history":0,"itemids":["24526"],"time_from":"1392789600","time_till":"1392790200","output":"extend"},"auth": "a826fca79a0795ccc1224dc76329972f","id": 0}' http://x.x.x.x/api_jsonrpc.php
　　#输出：
　　[{"itemid":"24526","clock":"1392789646","value":"95.7539","ns":"138978589"},
　　{"itemid":"24526","clock":"1392789706","value":"84.9595","ns":"578198422"},
　　{"itemid":"24526","clock":"1392789766","value":"94.5259","ns":"186216653"},
　　{"itemid":"24526","clock":"1392789826","value":"96.2286","ns":"789434167"},
　　{"itemid":"24526","clock":"1392789886","value":"94.7712","ns":"191954191"},
　　{"itemid":"24526","clock":"1392789946","value":"90.8338","ns":"781241168"},
　　{"itemid":"24526","clock":"1392790006","value":"89.1735","ns":"294674458"},
　　{"itemid":"24526","clock":"1392790066","value":"92.3015","ns":"877714419"},
　　{"itemid":"24526","clock":"1392790126","value":"96.3051","ns":"426421789"},
　　{"itemid":"24526","clock":"1392790186","value":"97.7931","ns":"174500891"}]
　　#“value”就是cpu idle值，采样间隔时间与监控项的数据更新时间一致。
　　补充：获取192.168.211.60监控项"system.cpu.util[,idle,avg1]"在2014年2月19日 下午2:02:46 的值
　　curl -i -X POST -H 'Content-Type: application/json' -d '{"jsonrpc": "2.0","method":"history.get","params":{"history":0,"itemids":["24526"],"time_from":"1392789600","time_till":"1392790200","output":"extend","filter":{"clock":"1392789766"}},"auth": "a826fca79a0795ccc1224dc76329972f","id": 0}' http://x.x.x.x/api_jsonrpc.php
　　#"value":"94.5259"要获取的值
　　

参考：
　　Zabbix API 官方文档：https://www.zabbix.com/documentation/2.2/manual/api