add

3 years ago · 89544aa5e6
28 changed files with 3268 additions and 1 deletions
--- a/52
+++ b/52
@ -0,0 +1,52 @@
 DIR:=$(strip $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST)))))
 mkfile_path := $(abspath $(lastword $(MAKEFILE_LIST)))
 current_dir := $(notdir $(patsubst %/,%,$(dir $(mkfile_path))))
 RHOST=
 SHELL := /bin/bash
 .PHONY: create help start stop list clean
 help:
 	@echo "" ; 
 	@echo ""                ;
 	@echo "--------------"  ;
 	@echo " SwarmLab.io "   ;
 	@echo "--------------"  ;
 	@echo ""                ;
 	@echo " USAGE: make [COMMAND]" ;
 	@echo ""  ;
 	@echo " Examples of [COMMAND] can be:"  ;
 	@echo ""  ;
 	@echo "      create: create service "  ;
 	@echo ""  ;
 	@echo "      start: start service "  ;
 	@echo ""  ;
 	@echo "      stop: shutdown service"  ;
 	@echo ""  ;
 	@echo "      clean: remove images in the system"  ;
 	@echo ""  ;
 	@echo "      list: show running containers of instance"  ;
 	@echo ""  ;
 	@echo "      help: show this message"  ;
 	@echo ""  ;
 	@echo "More info:"  ;
 	@echo "http://docs.swarmlab.io/SwarmLab-HowTos/swarmlab/docs/swarmlab/docs/index.html"  ;
 	@echo ""  ;
 	@echo ""  ;
 create:
 	@./install/usr/share/swarmlab.io/sec/swarmlab-sec create 2>/dev/null ; true
 start:
 	@./install/usr/share/swarmlab.io/sec/swarmlab-sec up 2>/dev/null ; true
 list:
 	@./install/usr/share/swarmlab.io/sec/swarmlab-sec list 2>/dev/null ; true
 stop:
 	@./install/usr/share/swarmlab.io/sec/swarmlab-sec down 2>/dev/null ; true
 clean:
 	@./install/usr/share/swarmlab.io/sec/swarmlab-sec clean 2>/dev/null ; true
--- a/README.md
+++ b/README.md
@ -1,2 +1,97 @@
-# microservice-adminer
+## Swarmlab is a collection of services that aims to
 > -    provide teachers and professors with online remote tools to do their lessons
 > 
 > -    give students the opportunity to study real life examples in their chosen area of expertise
 > 
 > -    allow developers to fully test and debug their applications and provide POC’s
 > 
 > -    or you simply want to use a Application (in a microservices-based architecture)
 > 
 >  Swarmlab provides you with all the required tools, tools to teach work or try out demos in a completely virtual environment.
 > 
 > More info: http://docs.swarmlab.io/SwarmLab-HowTos/swarmlab/docs/swarmlab/docs/index.html
 ![alt text](images/swarmlab-network.png "")
 ##  LabInstance ruby
 Ruby is a dynamic, reflective, object-oriented, general-purpose, open-source programming language. According to its authors, Ruby was influenced by Perl, Smalltalk, Eiffel, Ada, and Lisp. It supports multiple programming paradigms, including functional, object-oriented, and imperative. It also has a dynamic type system and automatic memory management.
 This is the defacto image. If you are unsure about what your needs are, you probably want to use this one. It is designed to be used both as a throw away container (mount your source code and start the container to start your app), as well as the base to build other images off of.
 ## Quickstart
 This is a quickstart guide of howto use this 
 **Note that this image is somewhat heavy (~1GB).  It can take some time to build the Instance. If you think the proccess is frosen you can reload the page in your Browser**
 ### Default Configuration 
 - Working Directory
 > /home/docker/project
 - Default user
 > docker
 - Default password
 > docker
 - Default password4root
 > pass
 ### RUN INSTANCE
 Swarmlab services can be run in different ways. 
 - You can run them **through the swarmlab hybrid environment** (http://docs.swarmlab.io/SwarmLab-HowTos/swarmlab/docs/swarmlab/docs/hybrid/start-microservices.html)
 - or use them individually at will on the **command line of your system**
 #### CLI
 > git clone ...
 >
 > cd [DIRECTORY]
 >
 #### help
 >
 > make help
 >
 #### create service
 >
 > make create
 >
 #### start service
 >
 > make start
 >
 #### stop service
 >
 > make stop
 >
 #### list service
 >
 > make list
 >
 #### clean service
 >
 > make clean
 >
--- a/check-open.sh
+++ b/check-open.sh
@ -0,0 +1,15 @@
 function EPHEMERAL_PORT() {
    LOW_BOUND=49152
    RANGE=16384
    while true; do
        CANDIDATE=$[$LOW_BOUND + ($RANDOM % $RANGE)]
        (echo "" >/dev/tcp/127.0.0.1/${CANDIDATE}) >/dev/null 2>&1
        if [ $? -ne 0 ]; then
            echo $CANDIDATE
            break
        fi
    done
 }
 port=$(EPHEMERAL_PORT)
 echo $port
--- a/images/swarmlab-network.png
+++ b/images/swarmlab-network.png
--- a/install/etc/bash_completion.d/swarmlab-mpi-autocompletion.sh
+++ b/install/etc/bash_completion.d/swarmlab-mpi-autocompletion.sh
@ -0,0 +1,30 @@
 #/usr/bin/env bash
 _mpi()
 {
  local commands_number=${DOTHIS_COMPLETION_COMMANDS_NUMBER:-50}
  local IFS=$'\n'
  local suggestions=($(compgen -W "$(cat $1 | sed 's/\t//')" -- "${COMP_WORDS[1]}"))
  local sug=1
  if [ "${#suggestions[@]}" == "$sug" ]; then
    local number="${suggestions[0]/%\ */}"
    COMPREPLY=("$number")
  else
    for i in "${!suggestions[@]}"; do
      suggestions[$i]="$(printf '%*s' "-$COLUMNS"  "${suggestions[$i]}")"
    done
    COMPREPLY=("${suggestions[@]}")
  fi
 }
 _mpi_completions()
 {
  local LAB_files=${LAB_PATH}
  if [ "${#COMP_WORDS[@]}" == "2" ] && [ "${#COMP_WORDS[@]}" != "3"  ]; then
    local file2="/usr/share/swarmlab.io/mpi/commands"
    _mpi "$file2" 1
  fi
 }
 complete -F _mpi_completions swarmlab-mpi
--- a/install/etc/profile.d/swarmlab-mpi.sh
+++ b/install/etc/profile.d/swarmlab-mpi.sh
@ -0,0 +1 @@
 export PATH=$PATH:/usr/share/swarmlab.io/mpi
--- a/install/usr/share/swarmlab.io/sec/.bashrc
+++ b/install/usr/share/swarmlab.io/sec/.bashrc
@ -0,0 +1,127 @@
 # ~/.bashrc: executed by bash(1) for non-login shells.
 # see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
 # for examples
 # If not running interactively, don't do anything
 case $- in
    *i*) ;;
      *) return;;
 esac
 # don't put duplicate lines or lines starting with space in the history.
 # See bash(1) for more options
 HISTCONTROL=ignoreboth
 # append to the history file, don't overwrite it
 shopt -s histappend
 # for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
 HISTSIZE=1000
 HISTFILESIZE=2000
 # check the window size after each command and, if necessary,
 # update the values of LINES and COLUMNS.
 shopt -s checkwinsize
 # If set, the pattern "**" used in a pathname expansion context will
 # match all files and zero or more directories and subdirectories.
 #shopt -s globstar
 # make less more friendly for non-text input files, see lesspipe(1)
 [ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"
 # set variable identifying the chroot you work in (used in the prompt below)
 if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; then
    debian_chroot=$(cat /etc/debian_chroot)
 fi
 # set a fancy prompt (non-color, unless we know we "want" color)
 case "$TERM" in
    xterm-color|*-256color) color_prompt=yes;;
 esac
 # uncomment for a colored prompt, if the terminal has the capability; turned
 # off by default to not distract the user: the focus in a terminal window
 # should be on the output of commands, not on the prompt
 #force_color_prompt=yes
 if [ -n "$force_color_prompt" ]; then
    if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
 	# We have color support; assume it's compliant with Ecma-48
 	# (ISO/IEC-6429). (Lack of such support is extremely rare, and such
 	# a case would tend to support setf rather than setaf.)
 	color_prompt=yes
    else
 	color_prompt=
    fi
 fi
 if [ "$color_prompt" = yes ]; then
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
 else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
 fi
 unset color_prompt force_color_prompt
 # If this is an xterm set the title to user@host:dir
 case "$TERM" in
 xterm*|rxvt*)
    PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\u@\h: \w\a\]$PS1"
    ;;
 *)
    ;;
 esac
 # enable color support of ls and also add handy aliases
 if [ -x /usr/bin/dircolors ]; then
    test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
    alias ls='ls --color=auto'
    #alias dir='dir --color=auto'
    #alias vdir='vdir --color=auto'
    alias grep='grep --color=auto'
    alias fgrep='fgrep --color=auto'
    alias egrep='egrep --color=auto'
 fi
 # colored GCC warnings and errors
 #export GCC_COLORS='error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01'
 # some more ls aliases
 alias ll='ls -alF'
 alias la='ls -A'
 alias l='ls -CF'
 # Add an "alert" alias for long running commands.  Use like so:
 #   sleep 10; alert
 alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'
 # Alias definitions.
 # You may want to put all your additions into a separate file like
 # ~/.bash_aliases, instead of adding them here directly.
 # See /usr/share/doc/bash-doc/examples in the bash-doc package.
 if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases
 fi
 if [ -d /etc/profile.d ]; then
  for i in /etc/profile.d/*.sh; do
    if [ -r $i ]; then
      . $i
    fi
  done
  unset i
 fi
 # enable programmable completion features (you don't need to enable
 # this, if it's already enabled in /etc/bash.bashrc and /etc/profile
 # sources /etc/bash.bashrc).
 if ! shopt -oq posix; then
  if [ -f /usr/share/bash-completion/bash_completion ]; then
    . /usr/share/bash-completion/bash_completion
  elif [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
  fi
 fi
--- a/install/usr/share/swarmlab.io/sec/.env
+++ b/install/usr/share/swarmlab.io/sec/.env
@ -0,0 +1,4 @@
 REGISTRY_ADDR=localhost
 REGISTRY_PORT=5000
 IMAGE_NAME=sec
 SSH_PORT=2222
--- a/install/usr/share/swarmlab.io/sec/.vimrc
+++ b/install/usr/share/swarmlab.io/sec/.vimrc
@ -0,0 +1,15 @@
 map <C-e> :NERDTreeToggle<CR>
 autocmd BufNewFile,BufRead *.vue,*.js set syntax=verilog tabstop=2|set shiftwidth=2|set noexpandtab autoindent
 augroup remember_folds
  autocmd!
  autocmd BufWinLeave * mkview
  autocmd BufWinEnter * silent! loadview
 augroup END
 " Useful for my Quick Notes feature in my tmuxrc
 augroup QuickNotes
  au BufWrite,VimLeave NOTES.otl mkview
  au BufRead           NOTES.otl silent loadview
 augroup END
 set swapfile
 set dir=~/tmp
--- a/install/usr/share/swarmlab.io/sec/LICENSE
+++ b/install/usr/share/swarmlab.io/sec/LICENSE
@ -0,0 +1,614 @@
 GNU AFFERO GENERAL PUBLIC LICENSE
 Version 3, 19 November 2007
 Copyright (C) 2007 Free Software Foundation, Inc. <http s ://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies of this license
 document, but changing it is not allowed.
 Preamble
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 and other kinds of works, specifically designed to ensure cooperation with
 the community in the case of network server software.
 The licenses for most software and other practical works are designed to take
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 Public Licenses are intended to guarantee your freedom to share and change
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 When we speak of free software, we are referring to freedom, not price. Our
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 Developers that use our General Public Licenses protect your rights with two
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 A "contributor" is a copyright holder who authorizes use under this License
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   13. Remote Network Interaction; Use with the GNU General Public License.
 Notwithstanding any other provision of this License, if you modify the Program,
 your modified version must prominently offer all users interacting with it
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 TERMS AND CONDITIONS
 How to Apply These Terms to Your New Programs
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 use to the public, the best way to achieve this is to make it free software
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 <one line to give the program's name and a brief idea of what it does.>
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 any later version.
 This program is distributed in the hope that it will be useful, but WITHOUT
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 Also add information on how to contact you by electronic and paper mail.
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 s ://www.gnu.org/licenses/>.
--- a/install/usr/share/swarmlab.io/sec/ROOT_PASSWORD
+++ b/install/usr/share/swarmlab.io/sec/ROOT_PASSWORD
@ -0,0 +1 @@
 ROOT_PASSWORD="pass"
--- a/install/usr/share/swarmlab.io/sec/auto_update_hosts
+++ b/install/usr/share/swarmlab.io/sec/auto_update_hosts
@ -0,0 +1,11 @@
 #!/bin/sh
 hosts=$(get_hosts)
 printf "%s" "$hosts" > "$1"
 while sleep 2
 do
  current_hosts=$(get_hosts)
  [ "$hosts" != "$current_hosts" ] && printf "%s" "$current_hosts" > "$1"
  hosts=$current_hosts
 done
--- a/install/usr/share/swarmlab.io/sec/bin/ttyd.x86_64
+++ b/install/usr/share/swarmlab.io/sec/bin/ttyd.x86_64
--- a/install/usr/share/swarmlab.io/sec/commands
+++ b/install/usr/share/swarmlab.io/sec/commands
@ -0,0 +1,13 @@
 create       create project      (swarmlab-sec create)
 up           start swarmlab-sec  (swarmlab-sec up size=10)
 scale        resize swarmlab-sec (swarmlab-sec scale size=30)
 reload       rebuild image       (swarmlab-sec reload size=15)
 login        login swarmlab-sec  (swarmlab-sec login)
 exec         execute command     (swarmlab-sec exec [SHELL COMMAND])
 down         stop swarmlab-sec   (swarmlab-sec down)
 clean        clean project       (swarmlab-sec clean)
 list         show instances      (swarmlab-sec list)
 help         show help           (swarmlab-sec help)
--- a/install/usr/share/swarmlab.io/sec/get_hosts
+++ b/install/usr/share/swarmlab.io/sec/get_hosts
@ -0,0 +1,8 @@
 #!/bin/sh
 # Include the variables that store the Docker service names
 # shellcheck disable=SC1091
 . /etc/opt/service_names
 localip=$(ip addr show dev eth0 | grep "inet " | cut -d ' ' -f 6  | cut -f 1 -d '/')
 nmap -sP "$localip/24" | grep Nmap | cut -d' ' -f5 | grep "_$MPI_WORKER_SERVICE_NAME_" > /project/hosts
--- a/install/usr/share/swarmlab.io/sec/install-vim-plugin.sh
+++ b/install/usr/share/swarmlab.io/sec/install-vim-plugin.sh
@ -0,0 +1,74 @@
 #! /usr/bin/env sh
 start_dir=$(pwd)
 bin_string="export PATH=\"${PATH}:${HOME}/.vimpkg/bin\""
 # Download the apt-vim files
 curl -fSsLo ${HOME}/apt-vim/apt-vim --create-dirs \
    https://raw.githubusercontent.com/egalpin/apt-vim/master/apt-vim
 curl -fSsLo ${HOME}/apt-vim/vim_config.json \
    https://raw.githubusercontent.com/egalpin/apt-vim/master/vim_config.json
 # Add vimrc if there isn't one already
 [ -f ${HOME}/.vimrc ] || touch ${HOME}/.vimrc
 # Make sure vimrc is using pathogen
 if [ $(grep -c "execute pathogen#infect()" ${HOME}/.vimrc) -eq 0 ]; then
    echo "execute pathogen#infect()" >> ${HOME}/.vimrc
 fi
 if [ $(grep -c "call pathogen#helptags()" ${HOME}/.vimrc) -eq 0 ]; then
    echo "call pathogen#helptags()" >> ${HOME}/.vimrc
 fi
 # Update path for executing shell
 eval "$bin_string"
 added_to_profile=false
 already_present=false
 for rc in bashrc zshrc bash_profile; do
  if [ -s "$HOME/.$rc" ]; then
    if grep -q "$bin_string" "$HOME/.$rc"; then
      already_present=true
    else
      printf "\n$bin_string\n" >> "$HOME/.$rc"
      printf "== Added apt-vim PATH to '~/.$rc'\n"
      added_to_profile=true
    fi
  fi
 done
 # Execute apt-vim init
 cd ${HOME}/apt-vim
 python - <<EOF
 import imp, os
 print('apt-vim setup starting')
 HOME = os.path.expanduser("~")
 APT_VIM_DIR = os.path.abspath(os.path.join(HOME, 'apt-vim'))
 SCRIPT_ROOT_DIR = os.path.abspath(os.path.join(HOME, '.vimpkg'))
 BIN_DIR = os.path.abspath(os.path.join(SCRIPT_ROOT_DIR, 'bin'))
 os.environ['PATH'] += os.pathsep + BIN_DIR
 os.chdir(APT_VIM_DIR)
 aptvim = imp.load_source("aptvim", "./apt-vim")
 av = aptvim.aptvim(ASSUME_YES=True, VIM_CONFIG='', INSTALL_TARGET='')
 av.first_run()
 av.handle_install(None, None, None)
 EOF
 python_result=$?
 cd $start_dir
 echo
 if [ "$python_result" -ne 0 ]; then
    echo "== Error:"
    echo "   Installation failed."
 elif [ "$added_to_profile" = false ] && [ "$already_present" = false ]; then
    echo "== Error:"
    echo "   Found no profile to add apt-vim PATH to."
    echo "   Add the following line to your shell profile and source it to install manually:"
    printf "   $bin_string\n"
 else
    echo "== apt-vim installation succeeded! Run 'source ~/.bashrc || source ~/.bash_profile' or 'source ~/.zshrc'"
    echo "   to access the executable script."
 fi
--- a/install/usr/share/swarmlab.io/sec/project/bin/swarmlab-nmap
+++ b/install/usr/share/swarmlab.io/sec/project/bin/swarmlab-nmap
@ -0,0 +1,6 @@
 #/bin/sh
 #ip=`nslookup hybrid-mpi_master_1.hybrid-mpi_hybrid-mpi | grep Addr | cut -d':' -f2 | grep -v 127.0.`
 ip=`nslookup $NODENAME | grep Addr | cut -d':' -f2 | grep -v 127.0.`
 nmap -sn -oG - $ip/24 | grep Up | grep $NODENETWORK | cut -d ' ' -f 2
--- a/install/usr/share/swarmlab.io/sec/project/courses/README
+++ b/install/usr/share/swarmlab.io/sec/project/courses/README
@ -0,0 +1 @@
 Course examples
--- a/install/usr/share/swarmlab.io/sec/project/courses/example-helloworld/app/client.js
+++ b/install/usr/share/swarmlab.io/sec/project/courses/example-helloworld/app/client.js
@ -0,0 +1,31 @@
 const app = require('express')();
 const http = require('http').Server(app);
 var path = require('path');
 options = {
        secure:true,
        reconnect: true,
        rejectUnauthorized : false
 };
 var io2 = require('socket.io-client');
 var socket = io2.connect('http://localhost:8084', options);
 var msg2 = "c= 120";
 socket.emit('log', msg2);
 /*
 var io = require('socket.io')(http);
 app.get('/log', (req, res) => {
  socket.emit('log', 'send from get');
  res.send('<h1>send</h1>');
 });
 http.listen(8085, () => {
  console.log('listening on *:8085');
 });
 */
--- a/install/usr/share/swarmlab.io/sec/project/courses/example-helloworld/app/mongo.js
+++ b/install/usr/share/swarmlab.io/sec/project/courses/example-helloworld/app/mongo.js
@ -0,0 +1,109 @@
 var path = require('path');
 var app = require('express')();
 var http = require('http').Server(app);
 var io = require('socket.io')(http);
 const MongoClient = require('mongodb').MongoClient;
 app.get('/test', (req, res) => {
 		var user="swarmlab"
 		var pass="swarmlab"
 		/*
 		use admin
 		db.createUser(
 			 {
 				 user: "test1",
 				 pwd: 'newpass',      // Or  "<cleartext password>"
 				 roles: [ { role: "readWrite", db: "app_swarmlab" } ],
 				 authenticationRestrictions: [ {
 						clientSource: ["192.168.1.7"],
 						serverAddress: ["192.168.80.2", "192.168.80.3", "192.168.80.4"]
 				 } ]
 			 }
 		)
 		*/
 	 var mongourl = "mongodb://"+user+":"+pass+"@swarmlabmongo1:27017,swarmlabmongo2:27017,swarmlabmongo1:27017/app_swarmlab?replicaSet=rs0&authSource=admin&w=1"
 	 const OPTS = {
 			useNewUrlParser: true,
 			useUnifiedTopology: true,
 			//poolSize: 10,
 			tls: false
 		};
 		const client = new MongoClient(mongourl,OPTS);
 		client.on('serverDescriptionChanged', function(event) {
 			console.log('received serverDescriptionChanged');
 			console.log(JSON.stringify(event, null, 2));
 		});
 		client.on('serverHeartbeatStarted', function(event) {
 			console.log('received serverHeartbeatStarted');
 			console.log(JSON.stringify(event, null, 2));
 		});
 		client.on('serverHeartbeatSucceeded', function(event) {
 			console.log('received serverHeartbeatSucceeded');
 			console.log(JSON.stringify(event, null, 2));
 		});
 		client.on('serverHeartbeatFailed', function(event) {
 			console.log('received serverHeartbeatFailed');
 			console.log(JSON.stringify(event, null, 2));
 		});
 		client.on('serverOpening', function(event) {
 			console.log('received serverOpening');
 			console.log(JSON.stringify(event, null, 2));
 		});
 		client.on('serverClosed', function(event) {
 			console.log('received serverClosed');
 			console.log(JSON.stringify(event, null, 2));
 		});
 		client.on('topologyOpening', function(event) {
 			console.log('received topologyOpening');
 			console.log(JSON.stringify(event, null, 2));
 		});
 		client.on('topologyClosed', function(event) {
 			console.log('received topologyClosed');
 			console.log(JSON.stringify(event, null, 2));
 		});
 		client.on('topologyDescriptionChanged', function(event) {
 			console.log('received topologyDescriptionChanged');
 			console.log(JSON.stringify(event, null, 2));
 		});
 		client.connect(function(err, client) {
 			if(err) throw err;
 				const db = client.db('app_swarmlab');
 					db.collection('logs').find({}).toArray()
 						.then(item => {
 								console.log('item '+JSON.stringify(item))
 								for (let i in item) {
 									console.log(JSON.stringify('items' + item[i]))
 								 }
 							})
 		});
 		res.send('<h1>Hello world!</h1>');
 });
 io.on('connection', s => {
      console.error('socket connection');
   s.on('log', (data, room) => {
      console.log('broadcast', data);
  });
 });
 http.listen(8084, () => console.error('listening on http://localhost:8084/'));
 console.error('socket.io example');
--- a/install/usr/share/swarmlab.io/sec/project/courses/example-helloworld/app/server.js
+++ b/install/usr/share/swarmlab.io/sec/project/courses/example-helloworld/app/server.js
@ -0,0 +1,24 @@
 var path = require('path');
 var app = require('express')();
 var http = require('http').Server(app);
 var io = require('socket.io')(http);
 app.get('/', (req, res) => {
  res.send('<h1>Hello world!</h1>');
 });
 io.on('connection', s => {
      console.error('socket connection');
   s.on('log', (data, room) => {
      console.log('broadcast', data);
  });
 });
 http.listen(8084, () => console.error('listening on http://localhost:8084/'));
 console.error('socket.io example');
--- a/install/usr/share/swarmlab.io/sec/project/courses/example-helloworld/package.json
+++ b/install/usr/share/swarmlab.io/sec/project/courses/example-helloworld/package.json
@ -0,0 +1,8 @@
 {
  "dependencies": {
    "express": "^4.17.1",
    "mongodb": "^3.6.5",
    "socket.io": "^4.0.0",
    "socket.io-client": "^4.0.0"
  }
 }
--- a/install/usr/share/swarmlab.io/sec/project/courses/nodeAppServer/app/app.js
+++ b/install/usr/share/swarmlab.io/sec/project/courses/nodeAppServer/app/app.js
@ -0,0 +1,107 @@
 var express = require('express');
 var http = require('http');
 const MongoClient = require('mongodb').MongoClient;
 var PORT = 8085;
 var app = express();
 app.get('/', function(req, res) {
 	var RES ={}
    	var message = req.query["log"]
 	// Connection URL
 	var database   = "app_swarmlab"
 	var user  	 = "swarmlab"
 	var password 	 = "swarmlab"
 	var collection = "logs"
 	var replica_set = "rs0"
 	var nodes = "swarmlabmongo1:27017,swarmlabmongo2:27017,swarmlabmongo3:27017"
 	//var url = `mongodb://${user}:${password}@${nodes}/${database}?replicaSet=${replica_set}&authSource=admin`
 var mongourl = "mongodb://"+user+":"+password+"@swarmlabmongo1:27017,swarmlabmongo2:27017,swarmlabmongo3:27017/app_swarmlab?replicaSet=rs0&authSource=admin&w=1"
   const OPTS = {
      useNewUrlParser: true,
      useUnifiedTopology: true,
      //poolSize: 10,
      tls: false
    };
    const client = new MongoClient(mongourl,OPTS);
    client.on('serverDescriptionChanged', function(event) {
      console.log('received serverDescriptionChanged');
      console.log(JSON.stringify(event, null, 2));
    });
    client.on('serverHeartbeatStarted', function(event) {
      console.log('received serverHeartbeatStarted');
      console.log(JSON.stringify(event, null, 2));
    });
    client.on('serverHeartbeatSucceeded', function(event) {
      console.log('received serverHeartbeatSucceeded');
      console.log(JSON.stringify(event, null, 2));
    });
    client.on('serverHeartbeatFailed', function(event) {
      console.log('received serverHeartbeatFailed');
      console.log(JSON.stringify(event, null, 2));
    });
    client.on('serverOpening', function(event) {
      console.log('received serverOpening');
      console.log(JSON.stringify(event, null, 2));
    });
    client.on('serverClosed', function(event) {
      console.log('received serverClosed');
      console.log(JSON.stringify(event, null, 2));
    });
    client.on('topologyOpening', function(event) {
      console.log('received topologyOpening');
      console.log(JSON.stringify(event, null, 2));
    });
   client.on('topologyOpening', function(event) {
      console.log('received topologyOpening');
      console.log(JSON.stringify(event, null, 2));
    });
    client.on('topologyClosed', function(event) {
      console.log('received topologyClosed');
      console.log(JSON.stringify(event, null, 2));
    });
    client.on('topologyDescriptionChanged', function(event) {
      console.log('received topologyDescriptionChanged');
      console.log(JSON.stringify(event, null, 2));
    });
    client.connect(function(err, client) {
      if(err) throw err;
        const db = client.db('app_swarmlab');
          db.collection('logs').find({}).toArray()
            .then(item => {
                console.log('item '+JSON.stringify(item))
                for (let i in item) {
                  console.log(JSON.stringify('items' + item[i]))
                 }
    		res.send({message: message, data:item});
              })
    });
 });
 app.post('/', function(req, res) {
    var message = req.body["log"]
    console.log(JSON.stringify(message))
    //console.log(req)
    res.send({message: message});
 });
 http.Server(app).listen(PORT, function() {
    console.log("HTTP server listening on port %s", PORT);
 });
--- a/install/usr/share/swarmlab.io/sec/project/courses/nodeAppServer/package-lock.json
+++ b/install/usr/share/swarmlab.io/sec/project/courses/nodeAppServer/package-lock.json
--- a/install/usr/share/swarmlab.io/sec/project/courses/nodeAppServer/package.json
+++ b/install/usr/share/swarmlab.io/sec/project/courses/nodeAppServer/package.json
@ -0,0 +1,7 @@
 {
    "main": "app.js",
    "dependencies": {
        "express": "^4.17.1",
        "mongodb": "^3.6.6"
    }
 }
--- a/install/usr/share/swarmlab.io/sec/project/hello_world.sh
+++ b/install/usr/share/swarmlab.io/sec/project/hello_world.sh
@ -0,0 +1 @@
 echo "Hello World"
--- a/install/usr/share/swarmlab.io/sec/sec_bootstrap
+++ b/install/usr/share/swarmlab.io/sec/sec_bootstrap
@ -0,0 +1,79 @@
 #!/bin/sh
 ROLE="undefined"
 MPI_MASTER_SERVICE_NAME="sec_masterservice"
 MPI_WORKER_SERVICE_NAME="sec_workerservice"
 HOSTNAMES="/etc/nethosts"
 #######################
 # ARGUMENTS PARSER
 while [ "$1" != "" ];
 do
    PARAM=$(echo "$1" | awk -F= '{print $1}')
    VALUE=$(echo "$1" | awk -F= '{print $2}')
    case $PARAM in
        role)
            [ "$VALUE" ] && ROLE=$VALUE
            ;;
        sec_master_service_name)
            [ "$VALUE" ] && MPI_MASTER_SERVICE_NAME=$VALUE
            ;;
        sec_worker_service_name)
            [ "$VALUE" ] && MPI_WORKER_SERVICE_NAME=$VALUE
            ;;
        *)
            echo "ERROR: unknown parameter \"$PARAM\""
            exit 1
            ;;
    esac
    shift
 done
 cat > /etc/opt/service_names <<- EOF
 MPI_MASTER_SERVICE_NAME=${MPI_MASTER_SERVICE_NAME}
 MPI_WORKER_SERVICE_NAME=${MPI_WORKER_SERVICE_NAME}
 EOF
 case $ROLE in
    "masterservice")
        # Auto update default host file in background and dumb all output
        auto_update_hosts "${HOSTNAMES}" > /dev/null 2>&1 &
 	ttyd -p 3787 bash &
 	/usr/local/bin/entrypoint.sh
 	/usr/local/bin/docker-php-entrypoint
 	php -S [::]:8080 -t /var/www/html
           tail -f /dev/null
        # Start ssh server
        #/usr/sbin/sshd -D
        ;;
    "workerservice")
        # Start ssh server in background
        #/usr/sbin/sshd -D &
        # Keep trying to connect to master node and stay there indefinitely so that master node can see
        # the connected hosts that are ready for MPI work
        #while sleep 1
        #do
            # shellcheck disable=SC2086
          #  ssh -T -o "StrictHostKeyChecking no"   \
           #     -i "${USER_HOME}/.ssh/id_rsa"      \
            #    ${USER}@${MPI_MASTER_SERVICE_NAME} \
           tail -f /dev/null
        #done
        ;;
    *)
        echo 'role argument only accepts "masterservice" or "workerservice"'
 esac
--- a/install/usr/share/swarmlab.io/sec/swarmlab-sec
+++ b/install/usr/share/swarmlab.io/sec/swarmlab-sec
@ -0,0 +1,735 @@
 #!/bin/bash
 # The MIT License (MIT)
 #
 # rootApostolos@swarmlab.io
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
 # in the Software without restriction, including without limitation the rights
 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 # copies of the Software, and to permit persons to whom the Software is
 # furnished to do so, subject to the following conditions:
 #
 # The above copyright notice and this permission notice shall be included in all
 # copies or substantial portions of the Software.
 #
 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 # Origin: https://github.com/NLKNguyen/alpine-mpich
 set -e
 DOCKERuser="docker"
 PACKAGES=$(cat <<EOF
 	net-tools  \
 	tcpdump \
 	sudo \
 	vim 
 EOF
 )
 # PACKAGES enabled ths with apt-get update && apt-get $APTPARAM install -y openssh-server $PACKAGES in in RUN export DEBIAN_FRONTEND=noninteractive 
 APTPARAM=" --no-install-recommends "
 IMAGE_local="microservice-adminer"
 HYBRID_NETWORK="microservice-adminer"
 # dont edit
 #IMAGE_origin="hub.swarmlab.io:5480/hybrid-numpy:latest"
 IMAGE_origin="adminer:4.8.1-standalone"
 bootstrap="sec_bootstrap"
 hostnames="auto_update_hosts"
 hostnames_get="get_hosts"
 #NODENAME=${HYBRID_NETWORK}_masterservice_1.${HYBRID_NETWORK}_${HYBRID_NETWORK}
 NODENAME=${IMAGE_local}_masterservice_1.${IMAGE_local}_${HYBRID_NETWORK}
 NODENETWORK=${HYBRID_NETWORK}
 # shellcheck disable=SC1091
 #. ./.env
 # -----------------------------------------------
 # 
 #  Find Source path of swarmlab.io script
 #
 # ----------------------------------------------
 SOURCE="${BASH_SOURCE[0]}"
 while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
  DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && pwd )"
  SOURCE="$(readlink "$SOURCE")"
  [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
 done
 DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && pwd )"
 # -----------------------------------------------
 # 
 #  Load Default config swarmlab.io 
 #
 # ----------------------------------------------
 #. $DIR/.env
 # -----------------------------------------------
 # 
 #  Find Working dir 
 #
 # ----------------------------------------------
 function EPHEMERAL_PORT() {
    LOW_BOUND=49152
    RANGE=16384
    while true; do
        CANDIDATE=$[$LOW_BOUND + ($RANDOM % $RANGE)]
        (echo "" >/dev/tcp/127.0.0.1/${CANDIDATE}) >/dev/null 2>&1
        if [ $? -ne 0 ]; then
            echo $CANDIDATE
            break
        fi
    done
 }
 servicesshport=$(EPHEMERAL_PORT)
 Wdir=$(pwd)
 if [ ! -f $Wdir/.env ]; then
 cat << EOF > $Wdir/.env
 REGISTRY_ADDR=localhost
 REGISTRY_PORT=5000
 IMAGE_NAME=$HYBRID_NETWORK
 SSH_PORT=$servicesshport
 R_PORT1=$(EPHEMERAL_PORT)
 R_PORT2=$(EPHEMERAL_PORT)
 R_PORT3=$(EPHEMERAL_PORT)
 R_PORT4=$(EPHEMERAL_PORT)
 R_PORT5=$(EPHEMERAL_PORT)
 EOF
 fi
 . $Wdir/.env
 create_dockerfile ()
 {
 	    docker pull $IMAGE_origin << ANSWERS
 yes
 yes
 yes
 ANSWERS
 . $Wdir/ROOT_PASSWORD
 if [ -d "$Wdir/project" ]; then
 	# -----------------------------------------------
 	# 
 	#  create Dockerfile
 	#
 	# ----------------------------------------------
        search='ok'
 	if [ $search == 'ok' ]
 	then
        	echo ""
 		echo ">>>	Load Origin 	"
 		cat << EOF > $Wdir/Dockerfile
 		FROM $IMAGE_origin
 		#
 		USER root
 		COPY $bootstrap /usr/bin
 		COPY $hostnames_get /usr/bin
 		COPY $hostnames /usr/bin
 		COPY install-vim-plugin.sh .
 		ENV NOTVISIBLE "in users profile"
 		ENV USER1 docker
 		ENV USER_HOME /home/docker
                ENV SSHDIR \${USER_HOME}/.ssh
 		COPY ssh/ \${SSHDIR}/
 		RUN export DEBIAN_FRONTEND=noninteractive  \
 		 && rm -rf /usr/share/doc \
 		 && rm -rf /usr/share/man \
 		 && rm -rf /usr/share/locale \ 
 		 && mkdir -p /var/run/sshd \
 		 && echo 'root:$ROOT_PASSWORD' | chpasswd \
 		 && echo "export VISIBLE=now" >> /etc/profile \
                 && useradd -ms /bin/bash docker \
 		 && mkdir -p /home/docker/project \
 		 && mkdir -p /etc/opt \
 		&& echo "docker:docker" | chpasswd \
 		&& echo "StrictHostKeyChecking no" > \${SSHDIR}/config \
 		&& cat \${SSHDIR}/*.pub >> \${SSHDIR}/authorized_keys \
 		&& chmod -R 600 \${SSHDIR}/* \
 	        && chown -R \${USER1}:\${USER1} \${SSHDIR} \
 		&& chown -R \${USER1}:\${USER1} \${USER_HOME}
 		WORKDIR /home/docker/project
 		COPY .vimrc /home/docker
 		EXPOSE 3787
 		EXPOSE 8080
 		USER docker
 EOF
 	fi
 else
 	echo ""
 	echo "Not in Project Directory"
 	echo "A  project directory should look like this"
 	echo ""
 cat <<EOF 
 ├── docker-compose.yml
 ├── Dockerfile
 ├── out.log
 ├── project
 │   └── hello_world.sh
 └── ssh
    ├── id_rsa
    └── id_rsa.pub
 EOF
 	echo "Change to your Project Directory And Try Again"
        echo ""
 exit 0
 fi
 }
 create_project ()
 {
 	    docker pull $IMAGE_origin << ANSWERS
 yes
 yes
 yes
 ANSWERS
 if [ "$Wdir" ==  "$HOME" ]; then
        echo""
 	echo "You are in Your Home directory"
 	echo "Please create a project directory"
 	echo "mkdir myproject; cd myproject; swarmlab-sec create"
        echo""
 	else
 	echo "# -----------------------------------------------"
 	echo "#####  		Create project            #####"
 	echo "# -----------------------------------------------"
 	search='ok'
 	if [ $search == 'ok' ]
 	then
 		echo ">>>	Load Origin 	"
 		cat << EOF > $Wdir/Dockerfile
 		FROM $IMAGE_origin
 		#
 		USER root
 		COPY $bootstrap /usr/bin
 		COPY $hostnames_get /usr/bin
 		COPY $hostnames /usr/bin
 		COPY install-vim-plugin.sh .
 		ENV NOTVISIBLE "in users profile"
 		ENV USER1 docker
 		ENV USER_HOME /home/docker
                ENV SSHDIR \${USER_HOME}/.ssh
 		COPY ssh/ \${SSHDIR}/
 		RUN export DEBIAN_FRONTEND=noninteractive  \
 		 && rm -rf /usr/share/doc \
 		 && rm -rf /usr/share/man \
 		 && rm -rf /usr/share/locale \ 
 		 && mkdir -p /var/run/sshd \
 		 && echo 'root:$ROOT_PASSWORD' | chpasswd \
 		 && echo "export VISIBLE=now" >> /etc/profile \
                 && useradd -ms /bin/bash docker \
 		 && mkdir -p /home/docker/project \
 		 && mkdir -p /etc/opt \
 		&& echo "docker:docker" | chpasswd \
 		&& echo "StrictHostKeyChecking no" > \${SSHDIR}/config \
 		&& cat \${SSHDIR}/*.pub >> \${SSHDIR}/authorized_keys \
 		&& chmod -R 600 \${SSHDIR}/* \
 	        && chown -R \${USER1}:\${USER1} \${SSHDIR} \
 		&& chown -R \${USER1}:\${USER1} \${USER_HOME}
 		COPY .vimrc /home/docker
 		WORKDIR /home/docker/project
 		EXPOSE 3787
 		EXPOSE 8080
 		USER docker
 EOF
 fi
 /bin/mkdir -p $Wdir/project
 /bin/cp -rf $DIR/project/bin $Wdir/project
 /bin/cp -rf $DIR/project/courses $Wdir/project
 /bin/cp -f $DIR/project/hello_world.sh $Wdir/project
 /bin/cp -f $DIR/$bootstrap $Wdir/$bootstrap
 /bin/cp -f $DIR/$hostnames $Wdir/$hostnames
 /bin/cp -f $DIR/$hostnames_get $Wdir/$hostnames_get
 /bin/cp -f $DIR/ROOT_PASSWORD $Wdir/ROOT_PASSWORD
 /bin/cp -rf $DIR/.vimrc $Wdir/.vimrc
 /bin/cp -rf $DIR/bin $Wdir
 /bin/cp -rf $DIR/install-vim-plugin.sh $Wdir/install-vim-plugin.sh
 cat << EOF > $Wdir/docker-compose.yml
 version: "3"
 services:
  masterservice:
    image: $IMAGE_NAME
    privileged: true
    environment:
     - NODENAME=${NODENAME}
     - NODENETWORK=${NODENETWORK}
     - DISPLAY=\${DISPLAY}
     - ADMINER_PLUGINS='tables-filter tinymce login-servers'
    cap_add:
      - NET_ADMIN
    user: root
    entrypoint: ["sec_bootstrap", "role=masterservice", "sec_master_service_name=masterservice", "sec_worker_service_name=workerservice"]
    ports:
      - "\${SSH_PORT}:22"
      - "\${R_PORT1}:3787"  # console
      - "\${R_PORT2}:8080"  # web
    networks:
      - ${HYBRID_NETWORK}
    volumes:
      - $Wdir/project:/home/docker/project
      - $Wdir/bin/ttyd.x86_64:/usr/bin/ttyd
 #  workerservice:
 #    image: $IMAGE_NAME
 #    privileged: true
 #    environment:
 #     - NODENAME=${NODENAME}
 #     - NODENETWORK=${NODENETWORK}
 #     - DISPLAY=\${DISPLAY}
 #    cap_add:
 #      - NET_ADMIN
 #    user: root
 #    entrypoint: ["sec_bootstrap", "role=workerservice", "sec_master_service_name=masterservice", "sec_worker_service_name=workerservice"]
 #    #ports:
 #    #  - "\${SSH_PORT}:22"
 #    networks:
 #      - ${HYBRID_NETWORK}
 #    volumes:
 #      - $Wdir/project:/home/docker/project
 networks:
  ${HYBRID_NETWORK}:
 EOF
 #/bin/cp -rf $DIR/ssh $Wdir
 cat << EOF > $Wdir/stop.sh
 ../install/usr/share/swarmlab.io/sec/swarmlab-sec down
 EOF
 cat << EOF > $Wdir/container-stop.sh
 docker stop \$1
 docker container rm \$1
 EOF
 cat <<EOF 
 Project is Ready
 ├── docker-compose.yml
 ├── Dockerfile
 ├── out.log
 ├── project
 │   └── hello_world.sh
 └── ssh
    ├── id_rsa
    └── id_rsa.pub
 Run: make start
     or run swarmlab-sec help for USAGE
 EOF
 /bin/chmod -R 777 $Wdir
 fi
 }
 #######################
 # TASK INDICATORS
 COMMAND_UP=0
 COMMAND_CREATE=0
 COMMAND_DOWN=0
 COMMAND_RELOAD=0
 COMMAND_SCALE=0
 COMMAND_LOGIN=0
 COMMAND_EXEC=0
 COMMAND_LIST=0
 COMMAND_CLEAN=0
 # Default values if providing empty
 SIZE=4
 #############################################
 usage ()
 {
    echo ""
    echo "--------------"
    echo " SwarmLab.io "
    echo "--------------"
    echo ""
    echo " USAGE: ./swarmlab-sec [COMMAND] [OPTIONS]"
    echo ""
    echo " Examples of [COMMAND] can be:"
    echo "      create: create swarmlab-sec "
    echo "          mkdir WORKdir; cd WORKdir; swarmlab-sec create"
    echo ""
    echo "      up: start swarmlab-sec"
    echo "          swarmlab-sec up size=10"
    echo ""
    echo "      scale: resize the swarmlab-sec"
    echo "          swarmlab-sec scale size=30"
    echo ""
    echo "      reload: rebuild image and distribute to nodes"
    echo "          swarmlab-sec reload size=15"
    echo ""
    echo "      login: login to Docker container of MPI master node for interactive usage"
    echo "          swarmlab-sec login"
    echo ""
    echo "      exec: execute shell command at the MPI master node"
    echo "          swarmlab-sec exec [SHELL COMMAND]"
    echo ""
    echo "      down: shutdown swarmlab-sec"
    echo "          swarmlab-sec down"
    echo ""
    echo "      clean: remove images in the system"
    echo "          swarmlab-sec clean"
    echo ""
    echo "      list: show running containers of swarmlab-sec"
    echo "          swarmlab-sec list"
    echo ""
    echo "      help: show this message"
    echo "          swarmlab-sec help"
    echo ""
    echo "  "
 }
 HEADER="
 SwarmLab.io"
 clear_all ()
 {
 	$(docker stop $(docker ps -a | grep "${IMAGE_local}_masterservice_" | awk '{print $1}')) || true
 	$(docker stop $(docker ps -a | grep "${IMAGE_local}_workerservice_" | awk '{print $1}')) || true
 	#$(docker stop $(docker ps -a | grep "_registry_" | awk '{print $1}')) || true                      # remove for microservices
 	#docker ps -a | grep "_registry_" | awk '{print $1}' | xargs docker container rm || true            # remove for microservices
 	docker ps -a | grep "${IMAGE_local}_workerservice_" | awk '{print $1}' | xargs docker container rm || true
 	docker ps -a | grep "${IMAGE_local}_masterservice_" | awk '{print $1}' | xargs docker container rm || true
 }
 down_all ()
 {
    printf "\\n\\n===> CLEAN UP SWARMLAB"
    printf "\\n%s\\n" "$HEADER"
    echo "$ docker-compose down"
    printf "\\n"
    docker-compose down
 }
 up_registry ()
 {
    printf "\\n\\n===> SPIN UP REGISTRY"
    printf "\\n%s\\n" "$HEADER"
    echo "$ docker-compose up -d registry"
    printf "\\n"
    #docker stop swarmlab-registry || true && docker rm swarmlab-registry || true     # remove for microservices
    docker container prune --force
    docker-compose up --no-recreate -d registry
 }
 generate_ssh_keys ()
 {
    if [ -f ssh/id_rsa ] && [ -f ssh/id_rsa.pub ]; then
        return 0
    fi
    printf "\\n\\n===> GENERATE SSH KEYS \\n\\n"
    echo "$ mkdir -p ssh/ "
    printf "\\n"
    mkdir -p ssh/
    echo "$ ssh-keygen -f ssh/id_rsa -t rsa -N ''"
    printf "\\n"
    ssh-keygen -f ssh/id_rsa -t rsa -N ''
 }
 build_and_push_image ()
 {
    printf "\\n\\n===> BUILD IMAGE"
    printf "\\n%s\\n" "$HEADER"
    echo "$ docker build -t \"$IMAGE_NAME\" ."
    printf "\\n"
    #docker build -t "$REGISTRY_ADDR:$REGISTRY_PORT/$IMAGE_NAME" .
    docker build -t "$IMAGE_NAME" .
 }
 up_master ()
 {
    printf "\\n\\n===> SPIN UP MASTER NODE"
    printf "\\n%s\\n" "$HEADER"
    echo "$ docker-compose up -d masterservice"
    printf "\\n"
    #docker-compose rm -f
    #docker-compose up --build -d masterservice
    #docker-compose up   --force-recreate -d masterservice
    docker-compose rm -f -s -v
    docker-compose up --build --remove-orphans  -d masterservice << ANSWERS
 yes
 yes
 yes
 ANSWERS
 }
 up_workers ()
 {
    printf "\\n\\n===> SPIN UP WORKER NODES"
    printf "\\n%s\\n" "$HEADER"
    echo "$ docker-compose up -d worker"
    printf "\\n"
    docker-compose rm -f
    docker-compose up --build -d workerservice
    #docker-compose up   --force-recreate -d workerservice 
    printf "\\n"
    printf "\\n%s\\n" "$HEADER"
    NUM_WORKER=$((SIZE - 1))
    echo "$ docker-compose scale workerservice=$NUM_WORKER"
    printf "\\n"
    docker-compose scale workerservice=${NUM_WORKER}
 }
 down_master ()
 {
    printf "\\n\\n===> TORN DOWN MASTER NODE"
    printf "\\n%s\\n" "$HEADER"
    echo "$ docker-compose stop masterservice && docker-compose rm -f masterservice"
    printf "\\n"
    docker-compose stop masterservice && docker-compose rm -f masterservice
 }
 down_workers ()
 {
    printf "\\n\\n===> TORN DOWN WORKER NODES"
    printf "\\n%s\\n" "$HEADER"
    echo "$ docker-compose stop worker && docker-compose rm -f worker"
    printf "\\n"
    docker-compose stop workerservice && docker-compose rm -f workerservice
 }
 list ()
 {
    printf "\\n\\n===> LIST CONTAINERS"
    printf "\\n%s\\n" "$HEADER"
    echo "$ docker-compose ps"
    printf "\\n"
    docker-compose ps
 }
 exec_on_mpi_master_container ()
 {
    # shellcheck disable=SC2046
    docker exec -it -u $DOCKERuser $(docker-compose ps | grep 'masterservice'| awk 'NR==1{print $1}') "$@"
 }
 prompt_ready ()
 {
    printf "\\n\\n===> SWARMLAB READY \\n\\n"
 }
 show_instruction ()
 {
    echo '                            ##         .          '
    echo '                      ## ## ##        ==          '
    echo '                   ## ## ## ## ##    ===          '
    echo '               /"""""""""""""""""\___/ ===        '
    echo '          ~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ /  ===- ~~~ '
    echo '               \______ o           __/            '
    echo '                 \    \         __/               '
    echo '                  \____\_______/                  '
    echo '                                                  '
    echo '               Swarmlab.io Hybrid                 '
    echo ''
    echo '=============================================================='
    echo ''
    echo "To run SEC programs in an interative shell:"
    echo "  1. Login to masterservice node:"
    echo "     Using Container->connect Menou:"
    echo "     copy/paste and Run command"
    echo ""
    echo "     Or using SSH with keys through exposed port:"
    echo "     $ ssh -o \"StrictHostKeyChecking no\" -i ssh/id_rsa -p $SSH_PORT docker@localhost"
    echo '       where [localhost] could be changed to the host IP of masterservice node'
    echo ""
    echo "  2. Execute programs inside masterservice node, for example:"
    echo "     $ sudo su"
    echo "     # apk update"
    echo "      *----------------------------------------------------*"
    echo "      | Default hostfile of connected nodes in the swarmlab |"
    echo "      | To obtain hostfile manually: $ ./bin/swarmlab-nmap: > hosts   |"
    echo "      * ---------------------------------------------------*"
    echo ""
    echo ""
 }
 #############################################
 while [ "$1" != "" ];
 do
    PARAM=$(echo "$1" | awk -F= '{print $1}')
    VALUE=$(echo "$1" | awk -F= '{print $2}')
    case $PARAM in
        help)
            usage
            exit
            ;;
        -i)
            show_instruction
            exit
            ;;
        login)
            COMMAND_LOGIN=1
            ;;
        exec)
            COMMAND_EXEC=1
            shift # the rest is the shell command to run in the node
            SHELL_COMMAND="$*"
            break # end while loop
            ;;
        up)
            COMMAND_UP=1
            ;;
        create)
            COMMAND_CREATE=1
            ;;
        down)
            COMMAND_DOWN=1
            ;;
        reload)
            COMMAND_RELOAD=1
            ;;
        scale)
            COMMAND_SCALE=1
            ;;
        list)
            COMMAND_LIST=1
            ;;
        clean)
            COMMAND_CLEAN=1
            ;;
        size)
            [ "$VALUE" ] && SIZE=$VALUE
            ;;
        *)
            echo "ERROR: unknown parameter \"$PARAM\""
            usage
            exit 1
            ;;
    esac
    shift
 done
 if [ $COMMAND_UP -eq 1 ]; then
    create_dockerfile
    down_all
    clear_all
    #up_registry 	 	# remove for microservices
    generate_ssh_keys
    build_and_push_image	# remove for microservices
    up_master
    #up_workers
    prompt_ready
    show_instruction
 elif [ $COMMAND_CREATE -eq 1 ]; then
    create_project
 elif [ $COMMAND_DOWN -eq 1 ]; then
    down_all
    clear_all
 elif [ $COMMAND_CLEAN -eq 1 ]; then
    clear_all
 elif [ $COMMAND_SCALE -eq 1 ]; then
    create_dockerfile
    down_master
    down_workers
    up_master
    #up_workers
    prompt_ready
    show_instruction
 elif [ $COMMAND_RELOAD -eq 1 ]; then
    create_dockerfile
    down_master
    down_workers
    build_and_push_image
    up_master
    #up_workers
    prompt_ready
    show_instruction
 elif [ $COMMAND_LOGIN -eq 1 ]; then
    exec_on_mpi_master_container /bin/bash
 elif [ $COMMAND_EXEC -eq 1 ]; then
    create_dockerfile
    exec_on_mpi_master_container ash -c "${SHELL_COMMAND}"
 elif [ $COMMAND_LIST -eq 1 ]; then
    list
 else
    usage
 fi
	`@ -0,0 +1 @@`
					`export PATH=$PATH:/usr/share/swarmlab.io/mpi`