Monitoring Linux Processes (their status, resource usage, etc ) via SSH?

Sorry, here's the original if you want to compare to @Austin Culbertson's. 

Discovery Script:

import com.jcraft.jsch.JSch
import com.santaba.agent.util.Settings
host = hostProps.get("system.hostname")
user = hostProps.get("ssh.user")
pass = hostProps.get("ssh.pass")
port = hostProps.get("ssh.port") ?: 22
cert = hostProps.get("ssh.cert") ?: '~/.ssh/id_rsa'
timeout = 15000 // timeout in milliseconds
try {
  def userCmd = getCommandOutput('ps ax -o pid,user,tty')
  if (userCmd[0]==2) {
    println(userCmd[1])
    return 2
  } else {
    users = userCmd[1].readLines().collectEntries{[it.tokenize(" ")[0], [it.tokenize(" ")[1],it.tokenize(" ")[2]]]}
    output = getCommandOutput('ps ax -o pid,command')
    if (output[0] == 2){
      return 3
    } else {
      def processes = output[1].readLines()
      processes.subList(2,processes.size()-2).each{
        e = it.tokenize(" ")
        pid = e[0]
        command = e[1..e.size()-1].join(" ")
        print("${pid}##[${pid}]${command}######")
        print("pid=${pid}")
        if (users[pid]){
          print("&tty=${users[pid][1]}")
          print("&user=${users[pid][0]}")
        } else {
          print("&user=UnknownUser")
        }
        print("\n")
      }
      return 0
    }
  }
}
catch (Exception e) {println "Unexpected Exception : " + e; return 1}

def getCommandOutput(String input_command) {
  try {
    jsch = new JSch()
    if (user && !pass) {jsch.addIdentity(cert)}
    session = jsch.getSession(user, host, port)
    session.setConfig("StrictHostKeyChecking", "no")
    String authMethod = Settings.getSetting(Settings.SSH_PREFEREDAUTHENTICATION, Settings.DEFAULT_SSH_PREFEREDAUTHENTICATION)
    session.setConfig("PreferredAuthentications", authMethod)
    session.setTimeout(timeout)
    if (pass) {session.setPassword(pass)}
    session.connect()
    channel = session.openChannel("exec")
    channel.setCommand(input_command)
    def commandOutput = channel.getInputStream()
    channel.connect()
    def output = commandOutput.text
    channel.disconnect()
    return [0,output]
  }
  catch (Exception e) {
    e.printStackTrace()
    return [2,"Error in SSH connection"]
  }
  finally {session.disconnect()}
}

Collection Script:

import com.jcraft.jsch.JSch
import com.santaba.agent.util.Settings
host = hostProps.get("system.hostname")
user = hostProps.get("ssh.user")
pass = hostProps.get("ssh.pass")
port = hostProps.get("ssh.port") ?: 22
cert = hostProps.get("ssh.cert") ?: '~/.ssh/id_rsa'
timeout = 15000 // timeout in milliseconds
try {
  def output = getCommandOutput('ps aux')
  if (output[0] == 2){
    println(output[1])
    return 2
  } else {
    output = output[1].readLines()
    output.subList(2,output.size()-2).each{line ->
      e = line.tokenize(" ")
      println("${e[1]}.cpu: ${e[2]}")
      println("${e[1]}.mem: ${e[3]}")
      println("${e[1]}.vsz: ${e[4]}")
      println("${e[1]}.rss: ${e[5]}")
    }
    return 0
  }
}
catch (Exception e) {println "Unexpected Exception : " + e; return 1}

def getCommandOutput(String input_command) {
  try {
    jsch = new JSch()
    if (user && !pass) {jsch.addIdentity(cert)}
    session = jsch.getSession(user, host, port)
    session.setConfig("StrictHostKeyChecking", "no")
    String authMethod = Settings.getSetting(Settings.SSH_PREFEREDAUTHENTICATION, Settings.DEFAULT_SSH_PREFEREDAUTHENTICATION)
    session.setConfig("PreferredAuthentications", authMethod)
    session.setTimeout(timeout)
    if (pass) {session.setPassword(pass)}
    session.connect()
    channel = session.openChannel("exec")
    channel.setCommand(input_command)
    def commandOutput = channel.getInputStream()
    channel.connect()
    def output = commandOutput.text
    channel.disconnect()
    return [0,output]
  }
  catch (Exception e) {
    e.printStackTrace()
    return [2,"Problem with SSH connection"]
  }
  finally {session.disconnect()}
}

I have these discovery filters setup to make it easy to pick and choose which processes are monitored based on properties set on the group/resource:

I also group by user because that's often helpful: