zeus
/
SwarmLab-HowTos
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
246 Commits
1 Branch
0 Tags
124 MiB
Tree: ed4ff948e8
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'ed4ff948e8'
${ noResults }
SwarmLab-HowTos/swarmlab/files/Architecture.adoc.html

744 lines
214 KiB
Raw Normal View History

new site
4 years ago
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="generator" content="Asciidoctor 2.0.10">
<meta name="description" content="IoT Εισαγωγή στο SwarmLab">
<meta name="keywords" content="iot, swarm">
<title>Storage</title>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700">
<style>
/* Asciidoctor default stylesheet | MIT License | https://asciidoctor.org */
/* Uncomment @import statement to use as custom stylesheet */
/*@import "https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700";*/
article,aside,details,figcaption,figure,footer,header,hgroup,main,nav,section{display:block}
audio,video{display:inline-block}
audio:not([controls]){display:none;height:0}
html{font-family:sans-serif;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}
a{background:none}
a:focus{outline:thin dotted}
a:active,a:hover{outline:0}
h1{font-size:2em;margin:.67em 0}
abbr[title]{border-bottom:1px dotted}
b,strong{font-weight:bold}
dfn{font-style:italic}
hr{-moz-box-sizing:content-box;box-sizing:content-box;height:0}
mark{background:#ff0;color:#000}
code,kbd,pre,samp{font-family:monospace;font-size:1em}
pre{white-space:pre-wrap}
q{quotes:"\201C" "\201D" "\2018" "\2019"}
small{font-size:80%}
sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}
sup{top:-.5em}
sub{bottom:-.25em}
img{border:0}
svg:not(:root){overflow:hidden}
figure{margin:0}
fieldset{border:1px solid silver;margin:0 2px;padding:.35em .625em .75em}
legend{border:0;padding:0}
button,input,select,textarea{font-family:inherit;font-size:100%;margin:0}
button,input{line-height:normal}
button,select{text-transform:none}
button,html input[type="button"],input[type="reset"],input[type="submit"]{-webkit-appearance:button;cursor:pointer}
button[disabled],html input[disabled]{cursor:default}
input[type="checkbox"],input[type="radio"]{box-sizing:border-box;padding:0}
button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0}
textarea{overflow:auto;vertical-align:top}
table{border-collapse:collapse;border-spacing:0}
*,*::before,*::after{-moz-box-sizing:border-box;-webkit-box-sizing:border-box;box-sizing:border-box}
html,body{font-size:100%}
body{background:#fff;color:rgba(0,0,0,.8);padding:0;margin:0;font-family:"Noto Serif","DejaVu Serif",serif;font-weight:400;font-style:normal;line-height:1;position:relative;cursor:auto;tab-size:4;-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased}
a:hover{cursor:pointer}
img,object,embed{max-width:100%;height:auto}
object,embed{height:100%}
img{-ms-interpolation-mode:bicubic}
.left{float:left!important}
.right{float:right!important}
.text-left{text-align:left!important}
.text-right{text-align:right!important}
.text-center{text-align:center!important}
.text-justify{text-align:justify!important}
.hide{display:none}
img,object,svg{display:inline-block;vertical-align:middle}
textarea{height:auto;min-height:50px}
select{width:100%}
.center{margin-left:auto;margin-right:auto}
.stretch{width:100%}
.subheader,.admonitionblock td.content>.title,.audioblock>.title,.exampleblock>.title,.imageblock>.title,.listingblock>.title,.literalblock>.title,.stemblock>.title,.openblock>.title,.paragraph>.title,.quoteblock>.title,table.tableblock>.title,.verseblock>.title,.videoblock>.title,.dlist>.title,.olist>.title,.ulist>.title,.qlist>.title,.hdlist>.title{line-height:1.45;color:#7a2518;font-weight:400;margin-top:0;margin-bottom:.25em}
div,dl,dt,dd,ul,ol,li,h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6,pre,form,p,blockquote,th,td{margin:0;padding:0;direction:ltr}
a{color:#2156a5;text-decoration:underline;line-height:inherit}
a:hover,a:focus{color:#1d4b8f}
a img{border:0}
p{font-family:inherit;font-weight:400;font-size:1em;line-height:1.6;margin-bottom:1.25em;text-rendering:optimizeLegibility}
p aside{font-size:.875em;line-height:1.35;font-style:italic}
h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{font-family:"Open Sans","DejaVu Sans",sans-serif;font-weight:300;font-style:normal;color:#ba3925;text-rendering:optimizeLegibility;margin-top:1em;margin-bottom:.5em;line-height:1.0125em}
h1 small,h2 small,h3 small,#toctitle small,.sidebarblock>.content>.title small,h4 small,h5 small,h6 small{font-size:60%;color:#e99b8f;line-height:0}
h1{font-size:2.125em}
h2{font-size:1.6875em}
h3,#toctitle,.sidebarblock>.content>.title{font-size:1.375em}
h4,h5{font-size:1.125em}
h6{font-size:1em}
hr{border:solid #dddddf;border-width:1px 0 0;clear:both;margin:1.25em 0 1.1875em;height:0}
em,i{font-style:italic;line-height:inherit}
strong,b{font-weight:bold;line-height:inherit}
small{font-size:60%;line-height:inherit}
code{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;font-weight:400;color:rgba(0,0,0,.9)}
ul,ol,dl{font-size:1em;line-height:1.6;margin-bottom:1.25em;list-style-position:outside;font-family:inherit}
ul,ol{margin-left:1.5em}
ul li ul,ul li ol{margin-left:1.25em;margin-bottom:0;font-size:1em}
ul.square li ul,ul.circle li ul,ul.disc li ul{list-style:inherit}
ul.square{list-style-type:square}
ul.circle{list-style-type:circle}
ul.disc{list-style-type:disc}
ol li ul,ol li ol{margin-left:1.25em;margin-bottom:0}
dl dt{margin-bottom:.3125em;font-weight:bold}
dl dd{margin-bottom:1.25em}
abbr,acronym{text-transform:uppercase;font-size:90%;color:rgba(0,0,0,.8);border-bottom:1px dotted #ddd;cursor:help}
abbr{text-transform:none}
blockquote{margin:0 0 1.25em;padding:.5625em 1.25em 0 1.1875em;border-left:1px solid #ddd}
blockquote cite{display:block;font-size:.9375em;color:rgba(0,0,0,.6)}
blockquote cite::before{content:"\2014 \0020"}
blockquote cite a,blockquote cite a:visited{color:rgba(0,0,0,.6)}
blockquote,blockquote p{line-height:1.6;color:rgba(0,0,0,.85)}
@media screen and (min-width:768px){h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2}
h1{font-size:2.75em}
h2{font-size:2.3125em}
h3,#toctitle,.sidebarblock>.content>.title{font-size:1.6875em}
h4{font-size:1.4375em}}
table{background:#fff;margin-bottom:1.25em;border:solid 1px #dedede}
table thead,table tfoot{background:#f7f8f7}
table thead tr th,table thead tr td,table tfoot tr th,table tfoot tr td{padding:.5em .625em .625em;font-size:inherit;color:rgba(0,0,0,.8);text-align:left}
table tr th,table tr td{padding:.5625em .625em;font-size:inherit;color:rgba(0,0,0,.8)}
table tr.even,table tr.alt{background:#f8f8f7}
table thead tr th,table tfoot tr th,table tbody tr td,table tr td,table tfoot tr td{display:table-cell;line-height:1.6}
h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2;word-spacing:-.05em}
h1 strong,h2 strong,h3 strong,#toctitle strong,.sidebarblock>.content>.title strong,h4 strong,h5 strong,h6 strong{font-weight:400}
.clearfix::before,.clearfix::after,.float-group::before,.float-group::after{content:" ";display:table}
.clearfix::after,.float-group::after{clear:both}
:not(pre):not([class^=L])>code{font-size:.9375em;font-style:normal!important;letter-spacing:0;padding:.1em .5ex;word-spacing:-.15em;background:#f7f7f8;-webkit-border-radius:4px;border-radius:4px;line-height:1.45;text-rendering:optimizeSpeed;word-wrap:break-word}
:not(pre)>code.nobreak{word-wrap:normal}
:not(pre)>code.nowrap{white-space:nowrap}
pre{color:rgba(0,0,0,.9);font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;line-height:1.45;text-rendering:optimizeSpeed}
pre code,pre pre{color:inherit;font-size:inherit;line-height:inherit}
pre>code{display:block}
pre.nowrap,pre.nowrap pre{white-space:pre;word-wrap:normal}
em em{font-style:normal}
strong strong{font-weight:400}
.keyseq{color:rgba(51,51,51,.8)}
kbd{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;display:inline-block;color:rgba(0,0,0,.8);font-size:.65em;line-height:1.45;background:#f7f7f7;border:1px solid #ccc;-webkit-border-radius:3px;border-radius:3px;-webkit-box-shadow:0 1px 0 rgba(0,0,0,.2),0 0 0 .1em white inset;box-shadow:0 1px 0 rgba(0,0,0,.2),0 0 0 .1em #fff inset;margin:0 .15em;padding:.2em .5em;vertical-align:middle;position:relative;top:-.1em;white-space:nowrap}
.keyseq kbd:first-child{margin-left:0}
.keyseq kbd:last-child{margin-right:0}
.menuseq,.menuref{color:#000}
.menuseq b:not(.caret),.menuref{font-weight:inherit}
.menuseq{word-spacing:-.02em}
.menuseq b.caret{font-size:1.25em;line-height:.8}
.menuseq i.caret{font-weight:bold;text-align:center;width:.45em}
b.button::before,b.button::after{position:relative;top:-1px;font-weight:400}
b.button::before{content:"[";padding:0 3px 0 2px}
b.button::after{content:"]";padding:0 2px 0 3px}
p a>code:hover{color:rgba(0,0,0,.9)}
#header,#content,#footnotes,#footer{width:100%;margin-left:auto;margin-right:auto;margin-top:0;margin-bottom:0;max-width:62.5em;*zoom:1;position:relative;padding-left:.9375em;padding-right:.9375em}
#header::before,#header::after,#content::before,#content::after,#footnotes::before,#footnotes::after,#footer::before,#footer::after{content:" ";display:table}
#header::after,#content::after,#footnotes::after,#footer::after{clear:both}
#content{margin-top:1.25em}
#content::before{content:none}
#header>h1:first-child{color:rgba(0,0,0,.85);margin-top:2.25rem;margin-bottom:0}
#header>h1:first-child+#toc{margin-top:8px;border-top:1px solid #dddddf}
#header>h1:only-child,body.toc2 #header>h1:nth-last-child(2){border-bottom:1px solid #dddddf;padding-bottom:8px}
#header .details{border-bottom:1px solid #dddddf;line-height:1.45;padding-top:.25em;padding-bottom:.25em;padding-left:.25em;color:rgba(0,0,0,.6);display:-ms-flexbox;display:-webkit-flex;display:flex;-ms-flex-flow:row wrap;-webkit-flex-flow:row wrap;flex-flow:row wrap}
#header .details span:first-child{margin-left:-.125em}
#header .details span.email a{color:rgba(0,0,0,.85)}
#header .details br{display:none}
#header .details br+span::before{content:"\00a0\2013\00a0"}
#header .details br+span.author::before{content:"\00a0\22c5\00a0";color:rgba(0,0,0,.85)}
#header .details br+span#revremark::before{content:"\00a0|\00a0"}
#header #revnumber{text-transform:capitalize}
#header #revnumber::after{content:"\00a0"}
#content>h1:first-child:not([class]){color:rgba(0,0,0,.85);border-bottom:1px solid #dddddf;padding-bottom:8px;margin-top:0;padding-top:1rem;margin-bottom:1.25rem}
#toc{border-bottom:1px solid #e7e7e9;padding-bottom:.5em}
#toc>ul{margin-left:.125em}
#toc ul.sectlevel0>li>a{font-style:italic}
#toc ul.sectlevel0 ul.sectlevel1{margin:.5em 0}
#toc ul{font-family:"Open Sans","DejaVu Sans",sans-serif;list-style-type:none}
#toc li{line-height:1.3334;margin-top:.3334em}
#toc a{text-decoration:none}
#toc a:active{text-decoration:underline}
#toctitle{color:#7a2518;font-size:1.2em}
@media screen and (min-width:768px){#toctitle{font-size:1.375em}
body.toc2{padding-left:15em;padding-right:0}
#toc.toc2{margin-top:0!important;background:#f8f8f7;position:fixed;width:15em;left:0;top:0;border-right:1px solid #e7e7e9;border-top-width:0!important;border-bottom-width:0!important;z-index:1000;padding:1.25em 1em;height:100%;overflow:auto}
#toc.toc2 #toctitle{margin-top:0;margin-bottom:.8rem;font-size:1.2em}
#toc.toc2>ul{font-size:.9em;margin-bottom:0}
#toc.toc2 ul ul{margin-left:0;padding-left:1em}
#toc.toc2 ul.sectlevel0 ul.sectlevel1{padding-left:0;margin-top:.5em;margin-bottom:.5em}
body.toc2.toc-right{padding-left:0;padding-right:15em}
body.toc2.toc-right #toc.toc2{border-right-width:0;border-left:1px solid #e7e7e9;left:auto;right:0}}
@media screen and (min-width:1280px){body.toc2{padding-left:20em;padding-right:0}
#toc.toc2{width:20em}
#toc.toc2 #toctitle{font-size:1.375em}
#toc.toc2>ul{font-size:.95em}
#toc.toc2 ul ul{padding-left:1.25em}
body.toc2.toc-right{padding-left:0;padding-right:20em}}
#content #toc{border-style:solid;border-width:1px;border-color:#e0e0dc;margin-bottom:1.25em;padding:1.25em;background:#f8f8f7;-webkit-border-radius:4px;border-radius:4px}
#content #toc>:first-child{margin-top:0}
#content #toc>:last-child{margin-bottom:0}
#footer{max-width:100%;background:rgba(0,0,0,.8);padding:1.25em}
#footer-text{color:rgba(255,255,255,.8);line-height:1.44}
#content{margin-bottom:.625em}
.sect1{padding-bottom:.625em}
@media screen and (min-width:768px){#content{margin-bottom:1.25em}
.sect1{padding-bottom:1.25em}}
.sect1:last-child{padding-bottom:0}
.sect1+.sect1{border-top:1px solid #e7e7e9}
#content h1>a.anchor,h2>a.anchor,h3>a.anchor,#toctitle>a.anchor,.sidebarblock>.content>.title>a.anchor,h4>a.anchor,h5>a.anchor,h6>a.anchor{position:absolute;z-index:1001;width:1.5ex;margin-left:-1.5ex;display:block;text-decoration:none!important;visibility:hidden;text-align:center;font-weight:400}
#content h1>a.anchor::before,h2>a.anchor::before,h3>a.anchor::before,#toctitle>a.anchor::before,.sidebarblock>.content>.title>a.anchor::before,h4>a.anchor::before,h5>a.anchor::before,h6>a.anchor::before{content:"\00A7";font-size:.85em;display:block;padding-top:.1em}
#content h1:hover>a.anchor,#content h1>a.anchor:hover,h2:hover>a.anchor,h2>a.anchor:hover,h3:hover>a.anchor,#toctitle:hover>a.anchor,.sidebarblock>.content>.title:hover>a.anchor,h3>a.anchor:hover,#toctitle>a.anchor:hover,.sidebarblock>.content>.title>a.anchor:hover,h4:hover>a.anchor,h4>a.anchor:hover,h5:hover>a.anchor,h5>a.anchor:hover,h6:hover>a.anchor,h6>a.anchor:hover{visibility:visible}
#content h1>a.link,h2>a.link,h3>a.link,#toctitle>a.link,.sidebarblock>.content>.title>a.link,h4>a.link,h5>a.link,h6>a.link{color:#ba3925;text-decoration:none}
#content h1>a.link:hover,h2>a.link:hover,h3>a.link:hover,#toctitle>a.link:hover,.sidebarblock>.content>.title>a.link:hover,h4>a.link:hover,h5>a.link:hover,h6>a.link:hover{color:#a53221}
details,.audioblock,.imageblock,.literalblock,.listingblock,.stemblock,.videoblock{margin-bottom:1.25em}
details>summary:first-of-type{cursor:pointer;display:list-item;outline:none;margin-bottom:.75em}
.admonitionblock td.content>.title,.audioblock>.title,.exampleblock>.title,.imageblock>.title,.listingblock>.title,.literalblock>.title,.stemblock>.title,.openblock>.title,.paragraph>.title,.quoteblock>.title,table.tableblock>.title,.verseblock>.title,.videoblock>.title,.dlist>.title,.olist>.title,.ulist>.title,.qlist>.title,.hdlist>.title{text-rendering:optimizeLegibility;text-align:left;font-family:"Noto Serif","DejaVu Serif",serif;font-size:1rem;font-style:italic}
table.tableblock.fit-content>caption.title{white-space:nowrap;width:0}
.paragraph.lead>p,#preamble>.sectionbody>[class="paragraph"]:first-of-type p{font-size:1.21875em;line-height:1.6;color:rgba(0,0,0,.85)}
table.tableblock #preamble>.sectionbody>[class="paragraph"]:first-of-type p{font-size:inherit}
.admonitionblock>table{border-collapse:separate;border:0;background:none;width:100%}
.admonitionblock>table td.icon{text-align:center;width:80px}
.admonitionblock>table td.icon img{max-width:none}
.admonitionblock>table td.icon .title{font-weight:bold;font-family:"Open Sans","DejaVu Sans",sans-serif;text-transform:uppercase}
.admonitionblock>table td.content{padding-left:1.125em;padding-right:1.25em;border-left:1px solid #dddddf;color:rgba(0,0,0,.6)}
.admonitionblock>table td.content>:last-child>:last-child{margin-bottom:0}
.exampleblock>.content{border-style:solid;border-width:1px;border-color:#e6e6e6;margin-bottom:1.25em;padding:1.25em;background:#fff;-webkit-border-radius:4px;border-radius:4px}
.exampleblock>.content>:first-child{margin-top:0}
.exampleblock>.content>:last-child{margin-bottom:0}
.sidebarblock{border-style:solid;border-width:1px;border-color:#dbdbd6;margin-bottom:1.25em;padding:1.25em;background:#f3f3f2;-webkit-border-radius:4px;border-radius:4px}
.sidebarblock>:first-child{margin-top:0}
.sidebarblock>:last-child{margin-bottom:0}
.sidebarblock>.content>.title{color:#7a2518;margin-top:0;text-align:center}
.exampleblock>.content>:last-child>:last-child,.exampleblock>.content .olist>ol>li:last-child>:last-child,.exampleblock>.content .ulist>ul>li:last-child>:last-child,.exampleblock>.content .qlist>ol>li:last-child>:last-child,.sidebarblock>.content>:last-child>:last-child,.sidebarblock>.content .olist>ol>li:last-child>:last-child,.sidebarblock>.content .ulist>ul>li:last-child>:last-child,.sidebarblock>.content .qlist>ol>li:last-child>:last-child{margin-bottom:0}
.literalblock pre,.listingblock>.content>pre{-webkit-border-radius:4px;border-radius:4px;word-wrap:break-word;overflow-x:auto;padding:1em;font-size:.8125em}
@media screen and (min-width:768px){.literalblock pre,.listingblock>.content>pre{font-size:.90625em}}
@media screen and (min-width:1280px){.literalblock pre,.listingblock>.content>pre{font-size:1em}}
.literalblock pre,.listingblock>.content>pre:not(.highlight),.listingblock>.content>pre[class="highlight"],.listingblock>.content>pre[class^="highlight "]{background:#f7f7f8}
.literalblock.output pre{color:#f7f7f8;background:rgba(0,0,0,.9)}
.listingblock>.content{position:relative}
.listingblock code[data-lang]::before{display:none;content:attr(data-lang);position:absolute;font-size:.75em;top:.425rem;right:.5rem;line-height:1;text-transform:uppercase;color:inherit;opacity:.5}
.listingblock:hover code[data-lang]::before{display:block}
.listingblock.terminal pre .command::before{content:attr(data-prompt);padding-right:.5em;color:inherit;opacity:.5}
.listingblock.terminal pre .command:not([data-prompt])::before{content:"$"}
.listingblock pre.highlightjs{padding:0}
.listingblock pre.highlightjs>code{padding:1em;-webkit-border-radius:4px;border-radius:4px}
.listingblock pre.prettyprint{border-width:0}
.prettyprint{background:#f7f7f8}
pre.prettyprint .linenums{line-height:1.45;margin-left:2em}
pre.prettyprint li{background:none;list-style-type:inherit;padding-left:0}
pre.prettyprint li code[data-lang]::before{opacity:1}
pre.prettyprint li:not(:first-child) code[data-lang]::before{display:none}
table.linenotable{border-collapse:separate;border:0;margin-bottom:0;background:none}
table.linenotable td[class]{color:inherit;vertical-align:top;padding:0;line-height:inherit;white-space:normal}
table.linenotable td.code{padding-left:.75em}
table.linenotable td.linenos{border-right:1px solid currentColor;opacity:.35;padding-right:.5em}
pre.pygments .lineno{border-right:1px solid currentColor;opacity:.35;display:inline-block;margin-right:.75em}
pre.pygments .lineno::before{content:"";margin-right:-.125em}
.quoteblock{margin:0 1em 1.25em 1.5em;display:table}
.quoteblock:not(.excerpt)>.title{margin-left:-1.5em;margin-bottom:.75em}
.quoteblock blockquote,.quoteblock p{color:rgba(0,0,0,.85);font-size:1.15rem;line-height:1.75;word-spacing:.1em;letter-spacing:0;font-style:italic;text-align:justify}
.quoteblock blockquote{margin:0;padding:0;border:0}
.quoteblock blockquote::before{content:"\201c";float:left;font-size:2.75em;font-weight:bold;line-height:.6em;margin-left:-.6em;color:#7a2518;text-shadow:0 1px 2px rgba(0,0,0,.1)}
.quoteblock blockquote>.paragraph:last-child p{margin-bottom:0}
.quoteblock .attribution{margin-top:.75em;margin-right:.5ex;text-align:right}
.verseblock{margin:0 1em 1.25em}
.verseblock pre{font-family:"Open Sans","DejaVu Sans",sans;font-size:1.15rem;color:rgba(0,0,0,.85);font-weight:300;text-rendering:optimizeLegibility}
.verseblock pre strong{font-weight:400}
.verseblock .attribution{margin-top:1.25rem;margin-left:.5ex}
.quoteblock .attribution,.verseblock .attribution{font-size:.9375em;line-height:1.45;font-style:italic}
.quoteblock .attribution br,.verseblock .attribution br{display:none}
.quoteblock .attribution cite,.verseblock .attribution cite{display:block;letter-spacing:-.025em;color:rgba(0,0,0,.6)}
.quoteblock.abstract blockquote::before,.quoteblock.excerpt blockquote::before,.quoteblock .quoteblock blockquote::before{display:none}
.quoteblock.abstract blockquote,.quoteblock.abstract p,.quoteblock.excerpt blockquote,.quoteblock.excerpt p,.quoteblock .quoteblock blockquote,.quoteblock .quoteblock p{line-height:1.6;word-spacing:0}
.quoteblock.abstract{margin:0 1em 1.25em;display:block}
.quoteblock.abstract>.title{margin:0 0 .375em;font-size:1.15em;text-align:center}
.quoteblock.excerpt>blockquote,.quoteblock .quoteblock{padding:0 0 .25em 1em;border-left:.25em solid #dddddf}
.quoteblock.excerpt,.quoteblock .quoteblock{margin-left:0}
.quoteblock.excerpt blockquote,.quoteblock.excerpt p,.quoteblock .quoteblock blockquote,.quoteblock .quoteblock p{color:inherit;font-size:1.0625rem}
.quoteblock.excerpt .attribution,.quoteblock .quoteblock .attribution{color:inherit;text-align:left;margin-right:0}
table.tableblock{max-width:100%;border-collapse:separate}
p.tableblock:last-child{margin-bottom:0}
td.tableblock>.content>:last-child{margin-bottom:-1.25em}
td.tableblock>.content>:last-child.sidebarblock{margin-bottom:0}
table.tableblock,th.tableblock,td.tableblock{border:0 solid #dedede}
table.grid-all>thead>tr>.tableblock,table.grid-all>tbody>tr>.tableblock{border-width:0 1px 1px 0}
table.grid-all>tfoot>tr>.tableblock{border-width:1px 1px 0 0}
table.grid-cols>*>tr>.tableblock{border-width:0 1px 0 0}
table.grid-rows>thead>tr>.tableblock,table.grid-rows>tbody>tr>.tableblock{border-width:0 0 1px}
table.grid-rows>tfoot>tr>.tableblock{border-width:1px 0 0}
table.grid-all>*>tr>.tableblock:last-child,table.grid-cols>*>tr>.tableblock:last-child{border-right-width:0}
table.grid-all>tbody>tr:last-child>.tableblock,table.grid-all>thead:last-child>tr>.tableblock,table.grid-rows>tbody>tr:last-child>.tableblock,table.grid-rows>thead:last-child>tr>.tableblock{border-bottom-width:0}
table.frame-all{border-width:1px}
table.frame-sides{border-width:0 1px}
table.frame-topbot,table.frame-ends{border-width:1px 0}
table.stripes-all tr,table.stripes-odd tr:nth-of-type(odd),table.stripes-even tr:nth-of-type(even),table.stripes-hover tr:hover{background:#f8f8f7}
th.halign-left,td.halign-left{text-align:left}
th.halign-right,td.halign-right{text-align:right}
th.halign-center,td.halign-center{text-align:center}
th.valign-top,td.valign-top{vertical-align:top}
th.valign-bottom,td.valign-bottom{vertical-align:bottom}
th.valign-middle,td.valign-middle{vertical-align:middle}
table thead th,table tfoot th{font-weight:bold}
tbody tr th{display:table-cell;line-height:1.6;background:#f7f8f7}
tbody tr th,tbody tr th p,tfoot tr th,tfoot tr th p{color:rgba(0,0,0,.8);font-weight:bold}
p.tableblock>code:only-child{background:none;padding:0}
p.tableblock{font-size:1em}
ol{margin-left:1.75em}
ul li ol{margin-left:1.5em}
dl dd{margin-left:1.125em}
dl dd:last-child,dl dd:last-child>:last-child{margin-bottom:0}
ol>li p,ul>li p,ul dd,ol dd,.olist .olist,.ulist .ulist,.ulist .olist,.olist .ulist{margin-bottom:.625em}
ul.checklist,ul.none,ol.none,ul.no-bullet,ol.no-bullet,ol.unnumbered,ul.unstyled,ol.unstyled{list-style-type:none}
ul.no-bullet,ol.no-bullet,ol.unnumbered{margin-left:.625em}
ul.unstyled,ol.unstyled{margin-left:0}
ul.checklist{margin-left:.625em}
ul.checklist li>p:first-child>.fa-square-o:first-child,ul.checklist li>p:first-child>.fa-check-square-o:first-child{width:1.25em;font-size:.8em;position:relative;bottom:.125em}
ul.checklist li>p:first-child>input[type="checkbox"]:first-child{margin-right:.25em}
ul.inline{display:-ms-flexbox;display:-webkit-box;display:flex;-ms-flex-flow:row wrap;-webkit-flex-flow:row wrap;flex-flow:row wrap;list-style:none;margin:0 0 .625em -1.25em}
ul.inline>li{margin-left:1.25em}
.unstyled dl dt{font-weight:400;font-style:normal}
ol.arabic{list-style-type:decimal}
ol.decimal{list-style-type:decimal-leading-zero}
ol.loweralpha{list-style-type:lower-alpha}
ol.upperalpha{list-style-type:upper-alpha}
ol.lowerroman{list-style-type:lower-roman}
ol.upperroman{list-style-type:upper-roman}
ol.lowergreek{list-style-type:lower-greek}
.hdlist>table,.colist>table{border:0;background:none}
.hdlist>table>tbody>tr,.colist>table>tbody>tr{background:none}
td.hdlist1,td.hdlist2{vertical-align:top;padding:0 .625em}
td.hdlist1{font-weight:bold;padding-bottom:1.25em}
.literalblock+.colist,.listingblock+.colist{margin-top:-.5em}
.colist td:not([class]):first-child{padding:.4em .75em 0;line-height:1;vertical-align:top}
.colist td:not([class]):first-child img{max-width:none}
.colist td:not([class]):last-child{padding:.25em 0}
.thumb,.th{line-height:0;display:inline-block;border:solid 4px #fff;-webkit-box-shadow:0 0 0 1px #ddd;box-shadow:0 0 0 1px #ddd}
.imageblock.left{margin:.25em .625em 1.25em 0}
.imageblock.right{margin:.25em 0 1.25em .625em}
.imageblock>.title{margin-bottom:0}
.imageblock.thumb,.imageblock.th{border-width:6px}
.imageblock.thumb>.title,.imageblock.th>.title{padding:0 .125em}
.image.left,.image.right{margin-top:.25em;margin-bottom:.25em;display:inline-block;line-height:0}
.image.left{margin-right:.625em}
.image.right{margin-left:.625em}
a.image{text-decoration:none;display:inline-block}
a.image object{pointer-events:none}
sup.footnote,sup.footnoteref{font-size:.875em;position:static;vertical-align:super}
sup.footnote a,sup.footnoteref a{text-decoration:none}
sup.footnote a:active,sup.footnoteref a:active{text-decoration:underline}
#footnotes{padding-top:.75em;padding-bottom:.75em;margin-bottom:.625em}
#footnotes hr{width:20%;min-width:6.25em;margin:-.25em 0 .75em;border-width:1px 0 0}
#footnotes .footnote{padding:0 .375em 0 .225em;line-height:1.3334;font-size:.875em;margin-left:1.2em;margin-bottom:.2em}
#footnotes .footnote a:first-of-type{font-weight:bold;text-decoration:none;margin-left:-1.05em}
#footnotes .footnote:last-of-type{margin-bottom:0}
#content #footnotes{margin-top:-.625em;margin-bottom:0;padding:.75em 0}
.gist .file-data>table{border:0;background:#fff;width:100%;margin-bottom:0}
.gist .file-data>table td.line-data{width:99%}
div.unbreakable{page-break-inside:avoid}
.big{font-size:larger}
.small{font-size:smaller}
.underline{text-decoration:underline}
.overline{text-decoration:overline}
.line-through{text-decoration:line-through}
.aqua{color:#00bfbf}
.aqua-background{background:#00fafa}
.black{color:#000}
.black-background{background:#000}
.blue{color:#0000bf}
.blue-background{background:#0000fa}
.fuchsia{color:#bf00bf}
.fuchsia-background{background:#fa00fa}
.gray{color:#606060}
.gray-background{background:#7d7d7d}
.green{color:#006000}
.green-background{background:#007d00}
.lime{color:#00bf00}
.lime-background{background:#00fa00}
.maroon{color:#600000}
.maroon-background{background:#7d0000}
.navy{color:#000060}
.navy-background{background:#00007d}
.olive{color:#606000}
.olive-background{background:#7d7d00}
.purple{color:#600060}
.purple-background{background:#7d007d}
.red{color:#bf0000}
.red-background{background:#fa0000}
.silver{color:#909090}
.silver-background{background:#bcbcbc}
.teal{color:#006060}
.teal-background{background:#007d7d}
.white{color:#bfbfbf}
.white-background{background:#fafafa}
.yellow{color:#bfbf00}
.yellow-background{background:#fafa00}
span.icon>.fa{cursor:default}
a span.icon>.fa{cursor:inherit}
.admonitionblock td.icon [class^="fa icon-"]{font-size:2.5em;text-shadow:1px 1px 2px rgba(0,0,0,.5);cursor:default}
.admonitionblock td.icon .icon-note::before{content:"\f05a";color:#19407c}
.admonitionblock td.icon .icon-tip::before{content:"\f0eb";text-shadow:1px 1px 2px rgba(155,155,0,.8);color:#111}
.admonitionblock td.icon .icon-warning::before{content:"\f071";color:#bf6900}
.admonitionblock td.icon .icon-caution::before{content:"\f06d";color:#bf3400}
.admonitionblock td.icon .icon-important::before{content:"\f06a";color:#bf0000}
.conum[data-value]{display:inline-block;color:#fff!important;background:rgba(0,0,0,.8);-webkit-border-radius:100px;border-radius:100px;text-align:center;font-size:.75em;width:1.67em;height:1.67em;line-height:1.67em;font-family:"Open Sans","DejaVu Sans",sans-serif;font-style:normal;font-weight:bold}
.conum[data-value] *{color:#fff!important}
.conum[data-value]+b{display:none}
.conum[data-value]::after{content:attr(data-value)}
pre .conum[data-value]{position:relative;top:-.125em}
b.conum *{color:inherit!important}
.conum:not([data-value]):empty{display:none}
dt,th.tableblock,td.content,div.footnote{text-rendering:optimizeLegibility}
h1,h2,p,td.content,span.alt{letter-spacing:-.01em}
p strong,td.content strong,div.footnote strong{letter-spacing:-.005em}
p,blockquote,dt,td.content,span.alt{font-size:1.0625rem}
p{margin-bottom:1.25rem}
.sidebarblock p,.sidebarblock dt,.sidebarblock td.content,p.tableblock{font-size:1em}
.exampleblock>.content{background:#fffef7;border-color:#e0e0dc;-webkit-box-shadow:0 1px 4px #e0e0dc;box-shadow:0 1px 4px #e0e0dc}
.print-only{display:none!important}
@page{margin:1.25cm .75cm}
@media print{*{-webkit-box-shadow:none!important;box-shadow:none!important;text-shadow:none!important}
html{font-size:80%}
a{color:inherit!important;text-decoration:underline!important}
a.bare,a[href^="#"],a[href^="mailto:"]{text-decoration:none!important}
a[href^="http:"]:not(.bare)::after,a[href^="https:"]:not(.bare)::after{content:"(" attr(href) ")";display:inline-block;font-size:.875em;padding-left:.25em}
abbr[title]::after{content:" (" attr(title) ")"}
pre,blockquote,tr,img,object,svg{page-break-inside:avoid}
thead{display:table-header-group}
svg{max-width:100%}
p,blockquote,dt,td.content{font-size:1em;orphans:3;widows:3}
h2,h3,#toctitle,.sidebarblock>.content>.title{page-break-after:avoid}
#toc,.sidebarblock,.exampleblock>.content{background:none!important}
#toc{border-bottom:1px solid #dddddf!important;padding-bottom:0!important}
body.book #header{text-align:center}
body.book #header>h1:first-child{border:0!important;margin:2.5em 0 1em}
body.book #header .details{border:0!important;display:block;padding:0!important}
body.book #header .details span:first-child{margin-left:0!important}
body.book #header .details br{display:block}
body.book #header .details br+span::before{content:none!important}
body.book #toc{border:0!important;text-align:left!important;padding:0!important;margin:0!important}
body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-break-before:always}
.listingblock code[data-lang]::before{display:block}
#footer{padding:0 .9375em}
.hide-on-print{display:none!important}
.print-only{display:block!important}
.hide-for-print{display:none!important}
.show-for-print{display:inherit!important}}
@media print,amzn-kf8{#header>h1:first-child{margin-top:1.25rem}
.sect1{padding:0!important}
.sect1+.sect1{border:0}
#footer{background:none}
#footer-text{color:rgba(0,0,0,.6);font-size:.9em}}
@media amzn-kf8{#header,#content,#footnotes,#footer{padding:0}}
</style>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
</head>
<body class="article toc2 toc-right">
<div id="header">
<div id="toc" class="toc2">
<div id="toctitle">Πίνακας περιεχομένων</div>
<ul class="sectlevel1">
<li><a href="#_storage">1. Storage</a>
<ul class="sectlevel2">
<li><a href="#_ipfs_cluster">1.1. IPFS Cluster <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_minio_cluster">1.2. minio cluster <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_mariadb_galera_cluster">1.3. MariaDB Galera Cluster <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_a_replica_set_in_mongodb">1.4. A replica set in MongoDB <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_sharedb">1.5. ShareDB <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
</ul>
</li>
<li><a href="#_devel">2. Devel</a>
<ul class="sectlevel2">
<li><a href="#_slim">2.1. slim <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_nodejs">2.2. nodejs <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_vue_js">2.3. vue.js <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_python">2.4. python <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_php">2.5. php <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_codemirror">2.6. codemirror <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_oauth2">2.7. oauth2 <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
</ul>
</li>
<li><a href="#_system_admin_and_devel">3. System admin and devel</a>
<ul class="sectlevel2">
<li><a href="#_docker">3.1. docker <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_docker_compose">3.2. docker-compose <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_bash">3.3. Bash <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_ansible">3.4. ansible <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_keycloak">3.5. keycloak <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
</ul>
</li>
<li><a href="#_deploy">4. Deploy</a>
<ul class="sectlevel2">
<li><a href="#_docker_swarm">4.1. Docker swarm <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
</ul>
</li>
<li><a href="#_colaboration">5. Colaboration</a>
<ul class="sectlevel2">
<li><a href="#_gittea">5.1. gittea <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_jitsi">5.2. jitsi <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
</ul>
</li>
<li><a href="#_service_access">6. service access</a>
<ul class="sectlevel2">
<li><a href="#_novnc">6.1. noVNC <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
<li><a href="#_ttyd">6.2. ttyd <span class="image"><img src="data:image/png;base64," alt="emblem web"></span></a></li>
</ul>
</li>
</ul>
</div>
</div>
<div id="content">
<div class="paragraph">
<p><strong>Architecture overview</strong></p>
</div>
<div class="paragraph">
<p><span class="image"><img src="data:image/png;base64,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
</div>
<div class="sect1">
<h2 id="_storage">1. Storage</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_ipfs_cluster">1.1. IPFS Cluster <span class="image"><a class="image" href="https://cluster.ipfs.io/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>Automated data availability and redundancy on <a href="https://cluster.ipfs.io/" target="_blank" rel="noopener">IPFS</a>.</p>
</div>
<div class="paragraph">
<p>IPFS Cluster provides data orchestration across a swarm of IPFS daemons by allocating, replicating and tracking a global pinset distributed among multiple peers.</p>
</div>
<div class="paragraph">
<p>It is being used for both tutors and students to publish content on a <strong>decentralized</strong> manner!<br>
Information will be <strong>auto-deleted</strong> after approximatelly <strong>24 hours</strong> of not being used.<br></p>
</div>
</div>
<div class="sect2">
<h3 id="_minio_cluster">1.2. minio cluster <span class="image"><a class="image" href="https://min.io/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>High Performance, cloud Native Object Storage.<br></p>
</div>
<div class="paragraph">
<p><a href="https://docs.aws.amazon.com/AmazonS3/latest/API/API_Operations.html" target="_blank" rel="noopener">Amazon’s S3 API</a> is the defacto standard in the object storage world.<br>
MinIO is the defacto standard for S3 compatibility and was one of the first to adopt the API and the first to add support for S3 Select.<br>
More than 750 organizations, including Microsoft Azure, use MinIO’s S3 Gateway - more than the rest of the industry combined.<br></p>
</div>
<div class="paragraph">
<p>It is being used for both tutors and students to save content on a <strong>centralized</strong> manner!<br>
Information storage is <strong>permanent</strong>.<br></p>
</div>
</div>
<div class="sect2">
<h3 id="_mariadb_galera_cluster">1.3. MariaDB Galera Cluster <span class="image"><a class="image" href="https://mariadb.com/kb/en/what-is-mariadb-galera-cluster/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p><a href="https://mariadb.org/" target="_blank" rel="noopener">MariaDB</a> Galera Cluster is a virtually synchronous multi-master cluster for MariaDB.<br>
Provide <strong>Active-active</strong> multi-master topology.<br></p>
</div>
<div class="paragraph">
<p>Used for user/admin authorization and authentication.</p>
</div>
</div>
<div class="sect2">
<h3 id="_a_replica_set_in_mongodb">1.4. A replica set in MongoDB <span class="image"><a class="image" href="https://docs.mongodb.com/manual/replication/#replication-in-mongodb" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p><a href="https://www.mongodb.com" target="_blank" rel="noopener">MongoDB</a> is a document database designed for ease of development and scaling.</p>
</div>
<div class="paragraph">
<p>Used for labroom and swarmlab services administration and scheduling.<br></p>
</div>
</div>
<div class="sect2">
<h3 id="_sharedb">1.5. ShareDB <span class="image"><a class="image" href="https://github.com/share/sharedb" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>ShareDB is a realtime database backend based on Operational Transformation (OT) of JSON documents</p>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_devel">2. Devel</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_slim">2.1. slim <span class="image"><a class="image" href="http://www.slimframework.com/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>Slim is a <a href="https://www.php.net/" target="_blank" rel="noopener">PHP</a> micro framework that helps you quickly write powerful APIs.</p>
</div>
<div class="paragraph">
<p>Used for main api of swarmlab.io<br>
Slim was used for a fast and powerful router that maps route callbacks to specific HTTP request methods and URIs.<br></p>
</div>
</div>
<div class="sect2">
<h3 id="_nodejs">2.2. nodejs <span class="image"><a class="image" href="https://nodejs.org/en/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>Nodejs is an asynchronous event-driven JavaScript runtime, Node.js is designed to build scalable network applications.</p>
</div>
<div class="paragraph">
<p>Used for event-driven programming and for Sockets and WebSockets.</p>
</div>
</div>
<div class="sect2">
<h3 id="_vue_js">2.3. vue.js <span class="image"><a class="image" href="https://vuejs.org/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>Vue is a progressive JavaScript framework for building user interfaces.<br>
It is designed from the ground up to be incrementally adoptable, and can easily scale between a library and a framework depending on different use cases.<br>
It consists of an approachable core library that focuses on the view layer only, and an ecosystem of supporting libraries that helps you tackle complexity in large Single-Page Applications.<br>
Used for the main user interface of swarmlab.io.<br></p>
</div>
</div>
<div class="sect2">
<h3 id="_python">2.4. python <span class="image"><a class="image" href="https://www.python.org/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>Python is an interpreted, high-level, general-purpose programming language.<br>
Python&#8217;s design philosophy emphasizes code readability with its notable use of significant whitespace.<br>
Its language constructs and object-oriented approach aim to help programmers write clear, logical code for small and large-scale projects.<br>
Used along with ansible for maintenance and administration of the machines making up the cluster of swarmlab.io.<br>
se sinrgasia me tin ansible gia tin diachirissi ton michanon</p>
</div>
</div>
<div class="sect2">
<h3 id="_php">2.5. php <span class="image"><a class="image" href="https://www.php.net" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>PHP is a popular general-purpose scripting language that is especially suited to web development.<br>
Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world.<br></p>
</div>
<div class="paragraph">
<p>Used with slim for creation of the main API.</p>
</div>
</div>
<div class="sect2">
<h3 id="_codemirror">2.6. codemirror <span class="image"><a class="image" href="https://codemirror.net/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>CodeMirror is a versatile text editor implemented in JavaScript for the browser.<br></p>
</div>
<div class="paragraph">
<p>Used for the online editors for interraction with tutors and students.<br></p>
</div>
</div>
<div class="sect2">
<h3 id="_oauth2">2.7. oauth2 <span class="image"><a class="image" href="https://oauth.net/2/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>OAuth 2.0 is the industry-standard protocol for authorization.<br>
OAuth 2.0 focuses on client developer simplicity while providing specific authorization flows for web applications, desktop applications, mobile phones, and living room devices.<br>
This specification and its extensions are being developed within the IETF OAuth Working Group.<br></p>
</div>
<div class="paragraph">
<p>This protocol is being used for the connection of users and services.<br></p>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_system_admin_and_devel">3. System admin and devel</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_docker">3.1. docker <span class="image"><a class="image" href="https://www.docker.com/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>Docker provides the ability to package and run an application in a loosely isolated environment called a container.<br></p>
</div>
<div class="paragraph">
<p>Used for all the services implementations.<br></p>
</div>
</div>
<div class="sect2">
<h3 id="_docker_compose">3.2. docker-compose <span class="image"><a class="image" href="https://docs.docker.com/compose/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>Compose is a tool for defining and running multi-container Docker applications.<br>
Used for development, configuration and testing of the services before deployment to the swarm.<br></p>
</div>
</div>
<div class="sect2">
<h3 id="_bash">3.3. Bash <span class="image"><a class="image" href="https://www.gnu.org/software/bash/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>A lot of bash scripting was used (low-level) tasks concerning the Linux operating system.</p>
</div>
</div>
<div class="sect2">
<h3 id="_ansible">3.4. ansible <span class="image"><a class="image" href="https://www.ansible.com/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>Ansible is an open-source software provisioning, configuration management, and application-deployment tool.<br></p>
</div>
<div class="paragraph">
<p>Used for administration of the machines of the general cluster of swarmlab.io as well as its subclusters.<br></p>
</div>
</div>
<div class="sect2">
<h3 id="_keycloak">3.5. keycloak <span class="image"><a class="image" href="https://www.keycloak.org/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>Open Source Identity and Access Management<br></p>
</div>
<div class="paragraph">
<p>Used as backend for authentication to provide secure services in our sso implementation.<br></p>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_deploy">4. Deploy</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_docker_swarm">4.1. Docker swarm <span class="image"><a class="image" href="https://docs.docker.com/engine/swarm/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>Docker swarm is a container orchestration tool, its allow to manage multiple containers deployed across a cluster.<br></p>
</div>
<div class="paragraph">
<p>Used for orchestration of swarmlab.io services.<br></p>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_colaboration">5. Colaboration</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_gittea">5.1. gittea <span class="image"><a class="image" href="https://gitea.com/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>A self-hosted Git service used for the git-repo management used by students and tutors.<br></p>
</div>
</div>
<div class="sect2">
<h3 id="_jitsi">5.2. jitsi <span class="image"><a class="image" href="https://jitsi.org/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>A secure, flexible, and completely free video conferencing.<br></p>
</div>
<div class="paragraph">
<p>Used for the online virtual meetings attended by students and tutors.<br></p>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_service_access">6. service access</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_novnc">6.1. noVNC <span class="image"><a class="image" href="https://novnc.com/info.html" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>A open source VNC client - it&#8217;s is both a VNC client JavaScript library as well as an application built on top of that library.<br>
noVNC runs in any modern browser including mobile browsers (iOS and Android).<br></p>
</div>
<div class="paragraph">
<p>Used to access a unix graphic environment for the services provided through a normal browser.<br></p>
</div>
</div>
<div class="sect2">
<h3 id="_ttyd">6.2. ttyd <span class="image"><a class="image" href="https://tsl0922.github.io/ttyd/" target="_blank" rel="noopener"><img src="data:image/png;base64," alt="emblem web"></a></span></h3>
<div class="paragraph">
<p>Terminal over the web.<br></p>
</div>
<div class="paragraph">
<p>Used to access a unix command line for the services provided through a normal browser.<br></p>
</div>
</div>
</div>
</div>
</div>
<div id="footer">
<div id="footer-text">
Last updated 2020-07-09 15:06:11 UTC
</div>
</div>
</body>
</html>