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= DOC
Αφού έχουμε εγκαταστήσει τα απαραίτητα προγράμματα δημιουργούμε το Makefile το οποίο θα περιέχει τις εντολές δημιουργίας του image καθώς και το deploy του docker-compose στο swarm.
To Makefile περιέχει τις εντολές:
[source, sh]
----
echo -e "\e[31mBuilding our nginx image!"
sleep 2
echo -e "\e[39m"
docker build -f Dockerfile -t anginx .
echo -e "\e[31mDeploying service"
sleep 2
echo -e "\e[39m"
docker stack deploy -c docker-compose.yml wordpress
----
Στη συνέχεια εκτελούμε την εντολή [underline]#chmod +x Makefile# ώστε να δώσουμε τα απραίτητα δικαιώματα στο αρχείο.
Για να το εκτελέσουμε τρέχουμε το ./Makefile
[TIP]
O manager ελέγχει ότι όλες οι υπηρεσίες τρέχουν σωστά με την εντολή [underline]#docker service ls#
== Testing
=== WordPress
:nofooter:
Προκειμένου να δούμε real-time τα αποτελέσματα του WordPress, βάζουμε στον browser μια από τις ακόλουθες IPv4:
*83.212.77.39*
*83.212.77.27*
*83.212.77.24*
*83.212.77.25*
image::https://i.imgur.com/ecBF9WN.png[]
=== PHPMyAdmin
Προκειμένου να δούμε real-time τα αποτελέσματα του PHPMyAdmin, βάζουμε στον browser μια από τις ακόλουθες IPv4:
*83.212.77.39:8080*
*83.212.77.27:8080*
*83.212.77.24:8080*
*83.212.77.25:8080*
image::https://i.imgur.com/BG2Vxt9.png[]
=== Minio
Προκειμένου να δούμε real-time τα αποτελέσματα του Minio, βάζουμε στον browser μια από τις ακόλουθες IPv4:
*83.212.77.39:9001-9004*
*83.212.77.27:9001-9004*
*83.212.77.24:9001-9004*
*83.212.77.25:9001-9004*
image::https://i.imgur.com/Kaz7KTR.png[]

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</style>
</head>
<body class="article data-line-1">
<div id="header">
<h1>DOC</h1>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph data-line-3">
<p>Αφού έχουμε εγκαταστήσει τα απαραίτητα προγράμματα δημιουργούμε το Makefile το οποίο θα περιέχει τις εντολές δημιουργίας του image καθώς και το deploy του docker-compose στο swarm.</p>
</div>
<div class="paragraph data-line-5">
<p>To Makefile περιέχει τις εντολές:</p>
</div>
<div class="listingblock data-line-7">
<div class="content">
<pre class="highlight"><code class="language-sh" data-lang="sh">echo -e "\e[31mBuilding our nginx image!"
sleep 2
echo -e "\e[39m"
docker build -f Dockerfile -t anginx .
echo -e "\e[31mDeploying service"
sleep 2
echo -e "\e[39m"
docker stack deploy -c docker-compose.yml wordpress</code></pre>
</div>
</div>
<div class="paragraph data-line-18">
<p>Στη συνέχεια εκτελούμε την εντολή <span class="underline">chmod +x Makefile</span> ώστε να δώσουμε τα απραίτητα δικαιώματα στο αρχείο.</p>
</div>
<div class="paragraph data-line-20">
<p>Για να το εκτελέσουμε τρέχουμε το ./Makefile</p>
</div>
<div class="admonitionblock tip data-line-23">
<table>
<tr>
<td class="icon">
<div class="title">Tip</div>
</td>
<td class="content">
O manager ελέγχει ότι όλες οι υπηρεσίες τρέχουν σωστά με την εντολή <span class="underline">docker service ls</span>
</td>
</tr>
</table>
</div>
</div>
</div>
<div class="sect1 data-line-25">
<h2 id="_testing">Testing</h2>
<div class="sectionbody">
<div class="sect2 data-line-26">
<h3 id="_wordpress">WordPress</h3>
<div class="paragraph data-line-28">
<p>Προκειμένου να δούμε real-time τα αποτελέσματα του WordPress, βάζουμε στον browser μια από τις ακόλουθες IPv4:</p>
</div>
<div class="paragraph data-line-30">
<p><strong>83.212.77.39</strong></p>
</div>
<div class="paragraph data-line-32">
<p><strong>83.212.77.27</strong></p>
</div>
<div class="paragraph data-line-34">
<p><strong>83.212.77.24</strong></p>
</div>
<div class="paragraph data-line-36">
<p><strong>83.212.77.25</strong></p>
</div>
<div class="imageblock data-line-38">
<div class="content">
<img src="https://i.imgur.com/ecBF9WN.png" alt="ecBF9WN">
</div>
</div>
</div>
<div class="sect2 data-line-40">
<h3 id="_phpmyadmin">PHPMyAdmin</h3>
<div class="paragraph data-line-41">
<p>Προκειμένου να δούμε real-time τα αποτελέσματα του PHPMyAdmin, βάζουμε στον browser μια από τις ακόλουθες IPv4:</p>
</div>
<div class="paragraph data-line-43">
<p><strong>83.212.77.39:8080</strong></p>
</div>
<div class="paragraph data-line-45">
<p><strong>83.212.77.27:8080</strong></p>
</div>
<div class="paragraph data-line-47">
<p><strong>83.212.77.24:8080</strong></p>
</div>
<div class="paragraph data-line-49">
<p><strong>83.212.77.25:8080</strong></p>
</div>
<div class="imageblock data-line-51">
<div class="content">
<img src="https://i.imgur.com/BG2Vxt9.png" alt="BG2Vxt9">
</div>
</div>
</div>
<div class="sect2 data-line-53">
<h3 id="_minio">Minio</h3>
<div class="paragraph data-line-54">
<p>Προκειμένου να δούμε real-time τα αποτελέσματα του Minio, βάζουμε στον browser μια από τις ακόλουθες IPv4:</p>
</div>
<div class="paragraph data-line-56">
<p><strong>83.212.77.39:9001-9004</strong></p>
</div>
<div class="paragraph data-line-58">
<p><strong>83.212.77.27:9001-9004</strong></p>
</div>
<div class="paragraph data-line-60">
<p><strong>83.212.77.24:9001-9004</strong></p>
</div>
<div class="paragraph data-line-62">
<p><strong>83.212.77.25:9001-9004</strong></p>
</div>
<div class="imageblock data-line-64">
<div class="content">
<img src="https://i.imgur.com/Kaz7KTR.png" alt="Kaz7KTR">
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>

57
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= INSTALL
Για την εκτέλεση της εργαστηριακής άσκησης χρησιμοποιήσαμε τις υπηρεσίες του https://cyclades.okeanos-knossos.grnet.gr[~okeanos]
Πιο συγκεκριμένα, χρησιμοποιήσαμε ένα VM με τα ακόλουθα χαρακτηριστικά
image::https://i.imgur.com/GwwJuvU.png[]
image::https://i.imgur.com/MH8dQzS.png[]
___
== Docker Swarm Initialization
:nofooter:
Προκειμένου να δημιουργήσουμε το σμήνος (swarm) ο manager έτρεξε την εντολή
[source, console]
----
docker swarm init --advertise-addr 83.212.77.39
----
Οι workers για να συνδεθούν στο _swarm_ (σμήνος) πρέπει να εκτελέσουν
[source, console]
----
docker swarm join --token SWMTKN-1-433emh74ij7y4loql5z5js9t7ptxkfdgwwsdzq18p3ag7uxswt-9ah0x5cwf6xnl1djgyet0x si 83.212.77.39:2377
----
[TIP]
Για να εμφανιστεί το join token ο manager τρέχει την εντολή
[source, console]
----
docker swarm join-token worker
----
== Working Directory
Στη συνέχεια δημιουργούμε το working directory μας με την εντολή
[source, console]
----
mkdir docker
----
[TIP]
Αν κάνουμε _pwd_ θα δούμε ότι βρισκόμαστε στο directory /home/user/docker
Όλοι οι χρήστες θα πρέπει να έχουν στον συγκεκριμένο φάκελο τα αρχεία nginx.conf & cert.pem & key.pem
----
|_ home
|_ user
|_ docker
|_ nginx.conf
|_ cert.pem
|_ key.pem
----

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</head>
<body class="article data-line-1">
<div id="header">
<h1>INSTALL</h1>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph data-line-3">
<p>Για την εκτέλεση της εργαστηριακής άσκησης χρησιμοποιήσαμε τις υπηρεσίες του <a href="https://cyclades.okeanos-knossos.grnet.gr">~okeanos</a></p>
</div>
<div class="paragraph data-line-5">
<p>Πιο συγκεκριμένα, χρησιμοποιήσαμε ένα VM με τα ακόλουθα χαρακτηριστικά</p>
</div>
<div class="imageblock data-line-7">
<div class="content">
<img src="https://i.imgur.com/GwwJuvU.png" alt="GwwJuvU">
</div>
</div>
<div class="imageblock data-line-8">
<div class="content">
<img src="https://i.imgur.com/MH8dQzS.png" alt="MH8dQzS">
</div>
</div>
<hr>
</div>
</div>
<div class="sect1 data-line-13">
<h2 id="_docker_swarm_initialization">Docker Swarm Initialization</h2>
<div class="sectionbody">
<div class="paragraph data-line-15">
<p>Προκειμένου να δημιουργήσουμε το σμήνος (swarm) ο manager έτρεξε την εντολή</p>
</div>
<div class="listingblock data-line-18">
<div class="content">
<pre class="highlight"><code class="language-console" data-lang="console">docker swarm init --advertise-addr 83.212.77.39</code></pre>
</div>
</div>
<div class="paragraph data-line-22">
<p>Οι workers για να συνδεθούν στο <em>swarm</em> (σμήνος) πρέπει να εκτελέσουν</p>
</div>
<div class="listingblock data-line-24">
<div class="content">
<pre class="highlight"><code class="language-console" data-lang="console">docker swarm join --token SWMTKN-1-433emh74ij7y4loql5z5js9t7ptxkfdgwwsdzq18p3ag7uxswt-9ah0x5cwf6xnl1djgyet0x si 83.212.77.39:2377</code></pre>
</div>
</div>
<div class="admonitionblock tip data-line-29">
<table>
<tr>
<td class="icon">
<div class="title">Tip</div>
</td>
<td class="content">
Για να εμφανιστεί το join token ο manager τρέχει την εντολή
</td>
</tr>
</table>
</div>
<div class="listingblock data-line-32">
<div class="content">
<pre class="highlight"><code class="language-console" data-lang="console">docker swarm join-token worker</code></pre>
</div>
</div>
</div>
</div>
<div class="sect1 data-line-36">
<h2 id="_working_directory">Working Directory</h2>
<div class="sectionbody">
<div class="paragraph data-line-38">
<p>Στη συνέχεια δημιουργούμε το working directory μας με την εντολή</p>
</div>
<div class="listingblock data-line-41">
<div class="content">
<pre class="highlight"><code class="language-console" data-lang="console">mkdir docker</code></pre>
</div>
</div>
<div class="admonitionblock tip data-line-46">
<table>
<tr>
<td class="icon">
<div class="title">Tip</div>
</td>
<td class="content">
Αν κάνουμε <em>pwd</em> θα δούμε ότι βρισκόμαστε στο directory /home/user/docker
</td>
</tr>
</table>
</div>
<div class="paragraph data-line-48">
<p>Όλοι οι χρήστες θα πρέπει να έχουν στον συγκεκριμένο φάκελο τα αρχεία nginx.conf &amp; cert.pem &amp; key.pem</p>
</div>
<div class="listingblock data-line-50">
<div class="content">
<pre>|_ home
|_ user
|_ docker
|_ nginx.conf
|_ cert.pem
|_ key.pem</pre>
</div>
</div>
</div>
</div>
</div>
</body>
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