Go语言(二十)日志采集项目(二)Etcd的使用
2021-01-21 11:14
                         标签:erro   one   done   存储目录   nil   err   应用   连接   node    代码 Go语言(二十)日志采集项目(二)Etcd的使用 标签:erro   one   done   存储目录   nil   err   应用   连接   node    原文地址:https://blog.51cto.com/13812615/2495685ETCD 介绍
ETCD的应用场景
ETCD环境搭建
[root@centos7-node1 etcd]# nohup ./etcd --listen-client-urls http://0.0.0.0:2379 --advertise-client-urls http://0.0.0.0:2379 --listen-peer-urls http://0.0.0.0:2380 --initial-advertise-peer-urls http://0.0.0.0:2380 &        #启动etcd
[root@centos7-node1 ~]# cd /opt/application/etcd/
[root@centos7-node1 etcd]# ./etcdctl --endpoints "http://localhost:2379" put /logagent/conf 333333
[root@centos7-node1 etcd]# ./etcdctl --endpoints "http://localhost:2379" watch  /logagent/conf   
[root@centos7-node1 etcd]# ./etcdctl --endpoints "http://localhost:2379" del /logagent/conf
安装v3插件
go get go.etcd.io/etcd/clientv3package main
import (
   "context"
   "fmt"
   "go.etcd.io/etcd/clientv3"
   "time"
)
func main() {
   client,err := clientv3.New(clientv3.Config{
      Endpoints: []string{"192.168.56.11:2379"},
      DialTimeout: time.Second*3,
   })
   defer client.Close()
   fmt.Printf("conn succ\n")
   for {
      resultChan := client.Watch(context.Background(),"/logagent/conf")
      for v := range resultChan{
         if v.Err() != nil {
            fmt.Printf("watch faild,err:%v\n",err)
            continue
         }
         for _,e := range v.Events {
            fmt.Printf("event_type:%v,key:%v,val:%v\n",e.Type,e.Kv.Key,string(e.Kv.Value))
         }
      }
   }
}
package main
import (
   "context"
   "fmt"
   "go.etcd.io/etcd/clientv3"
   "time"
)
func main() {
   client,err := clientv3.New(clientv3.Config{
      Endpoints: []string{"192.168.56.11:2379"},
      DialTimeout: time.Second*3,
   })
   defer client.Close()
   fmt.Printf("conn succ\n")
   _,err = client.Put(context.Background(),"/logagent/conf","sddadas")
   if err != nil {
      fmt.Printf("Put faild,err:%v\n",err)
   }
}
package main
import (
   "fmt"
   "github.com/Shopify/sarama"
   "sync"
)
var wg sync.WaitGroup
func main() {
   //连接配置
   consumer,err := sarama.NewConsumer([]string{"192.168.56.11:9092"},nil)
   if err != nil {
      fmt.Printf("consumer message faild,error:%v\n",err)
      return
   }
   fmt.Printf("conn succ\n")
   pt,err := consumer.Partitions("nginx_log")
   if err != nil {
      fmt.Printf("get partions aild,err:%v\n",err)
      return
   }
   for _,p := range pt {
      pc, err := consumer.ConsumePartition("nginx_log",p,sarama.OffsetNewest)
      if err !=  nil {
         fmt.Printf("consumer faild,error:%v\n",err)
         continue
      }
      wg.Add(1)
      go func() {
         for m := range pc.Messages() {
            fmt.Printf("topic:%v,value:%v\n",m.Topic,string(m.Value))
         }
         wg.Done()
      }()
   }
   wg.Wait()
}
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文章标题:Go语言(二十)日志采集项目(二)Etcd的使用
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