Get elasticache's memcached cluster from config endpoint

:-).go

package main

import (
	"bufio"
	"fmt"
	"net"
	"strings"
)

func main() {
	configEndpoint := "test.pidknw.cfg.usw2.cache.amazonaws.com:11211"

	conn, err := net.Dial("tcp", configEndpoint)
	if err != nil {
		panic(err)
	}
	defer conn.Close()

	reader, writer := bufio.NewReader(conn), bufio.NewWriter(conn)
	_, err = writer.Write([]byte("config get cluster\r\n"))
	if err != nil {
		panic(err)
	}

	err = writer.Flush()
	if err != nil {
		panic(err)
	}

	_, err = reader.ReadString('\n')
	if err != nil {
		panic(err)
	}
	_, err = reader.ReadString('\n')
	if err != nil {
		panic(err)
	}
	line, err := reader.ReadString('\n')
	if err != nil {
		panic(err)
	}

	endPoints := strings.Split(line, " ")
	if len(endPoints) < 1 {
		panic(err)
	}

	var ips []string
	var fqdns []string
	for _, v := range endPoints {
		endPoint := strings.Split(v, "|")
		if len(endPoint) < 3 {
			continue
		}
		fqdns = append(fqdns, endPoint[0])
		ips = append(ips, fmt.Sprintf("%s:%s", endPoint[1], strings.TrimSpace(endPoint[2])))
	}

	fmt.Printf("FQDNs: %v\n", strings.Join(fqdns, ","))
	fmt.Printf("IPs: %v\n", strings.Join(ips, ","))
}

Output

[root@ip-172-31-46-217 test]# go run main.go 
FQDNs: test.pidknw.0001.usw2.cache.amazonaws.com,test.pidknw.0002.usw2.cache.amazonaws.com
IPs: 172.31.13.162:11211,172.31.28.99:11211