output.yaml

---
"Server 0x1ca8fd0 (mariadb1)":
  "Server": "mariadb1"
  "Status": "Master, Running"
  "Protocol": "MySQLBackend"
  "Port": "3306"
  "Server Version": "10.1.18-MariaDB"
  "Node Id": "1"
  "Master Id": "-1"
  "Slave Ids": "2, 3 , 4 , 5"
  "Repl Depth": "0"
  "Number of connections": "0"
  "Current no. of conns": "0"
  "Current no. of operations": "0"
"Server 0x1ca8a90 (mariadb2)":
  "Server": "mariadb2"
  "Status": "Slave, Running"
  "Protocol": "MySQLBackend"
  "Port": "3306"
  "Server Version": "10.1.18-MariaDB"
  "Node Id": "2"
  "Master Id": "1"
  "Slave Ids": ""
  "Repl Depth": "1"
  "Number of connections": "0"
  "Current no. of conns": "0"
  "Current no. of operations": "0"
"Server 0x1ca8550 (mariadb3)":
  "Server": "mariadb3"
  "Status": "Slave, Running"
  "Protocol": "MySQLBackend"
  "Port": "3306"
  "Server Version": "10.1.18-MariaDB"
  "Node Id": "3"
  "Master Id": "1"
  "Slave Ids": ""
  "Repl Depth": "1"
  "Number of connections": "0"
  "Current no. of conns": "0"
  "Current no. of operations": "0"
"Server 0x1ca8010 (mariadb4)":
  "Server": "mariadb4"
  "Status": "Slave, Running"
  "Protocol": "MySQLBackend"
  "Port": "3306"
  "Server Version": "10.1.18-MariaDB"
  "Node Id": "4"
  "Master Id": "1"
  "Slave Ids": ""
  "Repl Depth": "1"
  "Number of connections": "0"
  "Current no. of conns": "0"
  "Current no. of operations": "0"
"Server 0x1ca7ad0 (mariadb5)":
  "Server": "mariadb5"
  "Status": "Slave, Running"
  "Protocol": "MySQLBackend"
  "Port": "3306"
  "Server Version": "10.1.18-MariaDB"
  "Node Id": "5"
  "Master Id": "1"
  "Slave Ids": ""
  "Repl Depth": "1"
  "Number of connections": "0"
  "Current no. of conns": "0"
  "Current no. of operations": "0"

toyaml.go

package main

import (
  "bufio"
  "fmt"
  "os"
  "regexp"
  "strings"
)


func fmtKv(x string) {

  splitvals := strings.SplitN(x, ":", 2)
  key := "\"" + strings.TrimSpace(splitvals[0]) + "\""
  value := strings.TrimSpace(splitvals[len(splitvals)-1])
  multivalue := strings.Split(value, ",")
  fmt.Printf("  %s: ", key)
  if len(multivalue) > 1 {
    fmt.Printf("\n")
    for _, v := range multivalue {
      fmt.Printf("    - \"%s\"\n", strings.TrimSpace(v))
    }
  } else {
    fmt.Printf("\"" + value + "\"\n")
  }

}

func main() {
  f, _ := os.Open("monitors.txt")
  scanner := bufio.NewScanner(f)

  fmt.Println("---")
  for scanner.Scan() {
    server := regexp.MustCompile("^[[:alpha:]].*")
    valuere := regexp.MustCompile("^[[:blank:]].*")
    line := scanner.Text()
    serverMatch := server.FindString(line)
    valueMatch := valuere.FindString(line)
    if serverMatch != "" {
      fmt.Printf("\"%s\":\n",serverMatch)
    }
    if valueMatch != "" {
      fmtKv(valueMatch)
    }

  }
}