GO_FOR_LINUX

package main

import (
   "flag"
   "fmt"
   "golang.org/x/crypto/ssh"
   "log"
   "net"
   "os"
   "time"
)

func connect_host(user, password, host string, port int) (*ssh.Session, error) {
   var (
      auth         []ssh.AuthMethod
      addr         string
      clientConfig *ssh.ClientConfig
      client       *ssh.Client
      session      *ssh.Session
      err          error
   )
   auth = make([]ssh.AuthMethod, 0)
   auth = append(auth, ssh.Password(password))
   clientConfig = &ssh.ClientConfig{
      User:    user,
      Auth:    auth,
      Timeout: 30 * time.Second,
      HostKeyCallback: func(hostname string, remote net.Addr, key ssh.PublicKey) error {
         return nil
      },
   }

   addr = fmt.Sprintf("%s:%d", host, port)

   if client, err = ssh.Dial("tcp", addr, clientConfig); err != nil {
      return nil, err
   }

   if session, err = client.NewSession(); err != nil {
      return nil, err
   }

   return session, nil
}

func main() {
   host_ip := flag.String("host_ip", "127.0.0.1", "ipAddr")
   flag.Parse()
   session, err := connect_host("dba", "xxxxxxx", *host_ip, 22)
   if err != nil {
      log.Fatal(*host_ip, err)
   }

   defer session.Close()

   session.Stdout = os.Stdout
   session.Stderr = os.Stderr
   session.Run("for db_type in {mysql,redis,java}; do num=`ps -elf | grep $db_type | grep -v grep | wc -l`; if [ $num -gt 0 ]; then  echo $db_type : $num; fi; done")
}