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PIDS='1234 5678'

for PID in $PIDS; do
  echo "----- PID $PID -----"
  cat /proc/$PID/limits
  lsof -a -d 1-999999 -p $PID
done

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# yum install gperftools-libs
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirror.nl.leaseweb.net
 * epel: ftp.fau.de
 * extras: mirror.proserve.nl
 * updates: mirror.proserve.nl
Resolving Dependencies
--> Running transaction check
---> Package gperftools-libs.x86_64 0:2.4-5.el7 will be installed

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#!/usr/bin/env ruby
require 'net/http'
require 'uri'

i = 0

while true
  begin
    i += 1
    puts "#{Time.now}: Pinging #{i}"

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var http = require('http');

var server = http.createServer(function(req, res) {
	res.writeHead(200, { 'Content-Type': 'text/plain' });
	res.end('hello world');
});

server.listen(3000);

if (typeof PhusionPassenger !== 'undefined') {

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# De toplevel module is UnionStationHooks. Maar het heeft ook een alias.
version = UnionStationHooks::VERSION_STRING
version = USH::VERSION_STRING  # hetzelfde

# Initialization. Passenger roept dit aan aan het begin van een request.
reporter = UnionStationHooks.begin_request(rack_env)

# Een Reporter object is een high-level object om *request-specifieke*
# informatie te versturen naar Union Station. De applicatie kan het
# object als volgt verkrijgen:

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switch {
// The following line triggers this compiler error:
// input.ch <- websocketReadResult literal used as value
case input.ch <- websocketReadResult{ messageType, p, nil }:
	// Do nothing
case <- input.cancel:
	conn.abortWriterFromReaderProcess()
	break
}

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#!/usr/bin/env python3 -u
# This shell script simulates a CGI web server.
# Save as 'testprocess.py' and run with:
# docker run -i --rm ubuntu:14.04 python3 -u < testprocess.py
import os, signal, time

# The web server spawns a CGI script, which in turn spawns a long-running 'grep',
# simulated here by 'sleep 999'.
print("Spawning CGI script")
pid = os.fork()

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This is the plan:
  1. Launch server #1
  2. Launch server #2
  3. Launch server #3
  4. Create master database instance #1 on server #1
  5. Create slave database instance #2 on server #2
  6. Create slave database instance #3 on server #3

Continue with this plan?

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This is the plan:
 1. Promote slave instance #2 (on server 192.168.0.2) to master
 2. Forward port 7000 in the entire cluster to slave instance #2 (on server 192.168.0.2)

Continue with this plan? [Y/n]

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$ pappardelle failover --member [email protected] [--new-master 192.168.0.2]