Golang实现获取SNMPV3数据

背景：批量初始化机器的时候经常有个别机器SNMP连接不通导致机器调度不生效，把功能封装成借口，上线前可以批量检测。

snmp的文档比较少，抄袭还严重，做个笔记记录一下使用方法。

代码Demo：

package main
import (
"fmt"
g "github.com/gosnmp/gosnmp"
"log"
"net/http"
"time"
)
func snmpget(ip string)[]byte{
snmp := &g.GoSNMP{
Target: ip,
Port: 161,
Community: "public",
Version: g.Version3,
Timeout: time.Duration(30) * time.Second,
SecurityModel: g.UserSecurityModel,
MsgFlags: g.AuthNoPriv, //Authentication and no privacy
SecurityParameters: &g.UsmSecurityParameters {
UserName: "myUserName", //输入你设置的snmp用户名
AuthenticationProtocol: g.MD5, //经过身份验证的SnmpV3连接正在使用的身份验证协议。
AuthenticationPassphrase: "mypass", //输入你公司的密码
},
}
err := snmp.Connect()
if err != nil {
log.Fatalf("Connect() err: %v", err)
}
defer snmp.Conn.Close()
oids := []string{"1.3.6.1.2.1.1.5.0"}
result, err := snmp.Get(oids)
if err != nil {
log.Fatalf("Get() err: %v", err)
}
fmt.Println(string(result.Variables[0].Value.([]byte)))
return result.Variables[0].Value.([]byte)
//for i, v := range result.Variables {
// fmt.Printf("%d. oid: %s ", i, v.Name)
// switch v.Type{
// case g.OctetString:
// fmt.Printf("string: %s\n", string(v.Value.([]byte)))
// default:
// fmt.Printf("number: %d\n", g.ToBigInt(v.Value))
// }
//}
}
func handle(w http.ResponseWriter,r *http.Request) {
var ip string
r.ParseForm()
for k,v := range r.Form{
if k == "ip" {
ip = v[0]
}
}
if ip != ""{
hostname := snmpget(ip)
w.Write(hostname)
}else {
w.Write([]byte("please input ip"))
}
}
func main() {
http.HandleFunc("/snmp",handle)
http.ListenAndServe("0.0.0.0:8005",nil)
}