统计
etcd集群对延时,带宽,和运行时间都有统计,通过统计信息,可以了解集群内部的健康状态
leader统计信息
主节点拥有整个集群的视野,主要关心两类信息
- 到每个节点的延时
- 成功和失败的Raft RPC请求
[root@docker ~]# curl http://127.0.0.1:2379/v2/stats/leader
{"leader":"ce2a822cea30bfca","followers":{}}[root@docker ~]#
[root@docker ~]#
我的环境中还没有followers,所以是空的
下面是官方文档中的示例
curl http://127.0.0.1:2379/v2/stats/leader
{
"followers": {
"6e3bd23ae5f1eae0": {
"counts": {
"fail": 0,
"success": 745
},
"latency": {
"average": 0.017039507382550306,
"current": 0.000138,
"maximum": 1.007649,
"minimum": 0,
"standardDeviation": 0.05289178277920594
}
},
"a8266ecf031671f3": {
"counts": {
"fail": 0,
"success": 735
},
"latency": {
"average": 0.012124141496598642,
"current": 0.000559,
"maximum": 0.791547,
"minimum": 0,
"standardDeviation": 0.04187900156583733
}
}
},
"leader": "924e2e83e93f2560"
}