Shadowing Practice: Provision LEMP with Ansible on a Raspberry Pi Cluster (Pi Dramble #4) - Learn English Speaking with Video
Creando lección...
1
Welcome to the Raspberry Pi Dramble cluster video series.
2
In this video, I'm going to show you how you can use Ansible to install all the software
3
that you need onto this Raspberry Pi cluster so that you can run a Drupal 8 website on it.
4
The first step after setting up all the networking is to make sure
5
that your computer and Ansible can communicate with all the Raspberry Pis using the IP addresses that we had set up.
6
So the first thing that I'm going to do is I'm going to make sure
7
that I can ping all the servers from Ansible.
8
And what this command is doing is saying look at all the servers in the inventory file
9
that I specified and run the ping module which basically pings the server and checks and makes sure it can connect.
10
And in this case it's saying that it can connect to all of them so that's good.
11
I'll show you the inventory file really quick.
12
Note that this one's a little more complicated than the one that I showed you in the networking video.
13
This one shows you that I've split up the the different servers by the balancer, which is this one on the top, and then the web servers,
14
which is these two, the second and third Raspberry Pis, and then the database servers, which is the last two, the master and then the slave or the replica.
15
So once I've set up that inventory file and made sure that I can communicate with the servers,
16
I'm ready to run the Ansible playbook that'll deploy all the software that's needed.
17
So I'm going to go to the Provision the Raspberry Pi page here
18
and it gives me two commands I need to run.
19
First I need to make sure that I install all the Ansible Galaxy requirements.
20
So I run this command, I already did that, and I also need to make sure
21
that I have a config.yaml file which has all the specific settings for my cluster.
22
So I've already copied this example.config.yaml file over to config.yaml, and I've tweaked a few settings to my likings.
23
Once that's done, I can run this ansible playbook command, which is going to run a bunch of different task lists
24
that will install all the software that you need on all the Raspberry Pis.
25
One of the cool things about using ansible is, since I've already told it about all the servers that I have, I can run commands like this,
26
which will check how much RAM is free on each of the Raspberry Pis using the free command.
27
Once I've described everything to Ansible, then Ansible can do everything for me instead of me having to log in to each of the servers.
28
If you want to find out more about how to use Ansible this way, and why you'd want to use Ansible,
29
I have another video that I'll link called Ansible one-on-one on a cluster of Raspberry Pis.
30
I also wrote a book on it, Ansible for DevOps, if you're interested in diving deeper.
31
But for now I'm going to take this command and let it run.
32
While it's running I'll kind of briefly explain what it's doing
33
and then I'll let it run while the video is sped up since it takes a while to run.
34
So first of all it's calling this main.yaml file.
35
This file includes three different files, one file that runs on the balancer, one file that runs on the database servers, and one file that runs on the web servers.
36
So let's take a quick look at the database playbook.
37
If I look here, it loads some variables from these different files.
38
It makes sure that there's a certain piece of software installed on the Raspberry Pi, the sudo package.
39
Then it will set up a firewall, it sets up some security settings, it installs and configures MySQL for the database server,
40
and it also installs Munin node which is software used to monitor the server.
41
And then there's also some scripts in a custom role I have
42
that installs a few scripts to control the LEDs on the front.
43
notice that the LEDs right now are all turned off, but through the course of this playbook, LEDs will start turning on,
44
like this one just turned on as the configuration for the balancer just finished.
45
So I have some scripts that will control the LEDs from software
46
and I'll show you how those are used at the end of the playbook run.
47
Now that everything's finished, you'll notice that the LEDs in all the Pies, except for the two web servers at this point, are turned on and green.
48
That means that they're ready to go and that I could install Drupal on them next.
49
Before I get to that though,
50
I'll show you how the balancer is actually balancing the request to these other two servers by loading the site www.pydramble.com,
51
which is what I've configured in my config.yaml file.
52
If I go here, it's actually going to send a request to this first server, and the first server is going to balance that request to one of the other two servers.
53
So if I hit enter, you'll see that there is a red and a red on this one, and if I refresh the page, it's actually going to send the request to this server.
54
And you'll see that every time I send a request, it always goes to the load balancer,
55
and then the balancer sends the requests alternately to one of these two servers.
56
So at this point it's saying file not found
57
which basically means I don't have Drupal installed on the Pi Dramble cluster yet.
58
Thank you.
📺 Mismo canal
✨ Recomendar Video
C11
309 oraciones
Claude Code: The Advanced Guide (99% of Devs Skip These Features)
Business EnglishUniversity StudentsWorking Adults
C14
27 oraciones
Raspberry Pi Explained in 100 Seconds
American AccentDaily ConversationUniversity StudentsWorking Adults
C12
339 oraciones
Easy Migration from Postgres to Databricks Lakebase
Business EnglishUniversity StudentsWorking Adults
C12
70 oraciones
How to Download your TIA Portal PLC Application to S7-PLCSIM (TIA Portal Course)
Business EnglishUniversity StudentsWorking Adults
C12
181 oraciones
FREE CCNA 200-301 course // Complete Practical CCNA (v1.1 2025 Course) with real equipment
Cambridge Exam PrepBusiness EnglishUniversity Students
C12
195 oraciones
JavaScript Visualized - Event Loop, Web APIs, (Micro)task Queue
Business EnglishUniversity StudentsWorking Adults
C17
47 oraciones
The most interesting "hack" in history...
American AccentBusiness EnglishUniversity StudentsWorking Adults
C1162 oraciones
Incident Management Process: A Step by Step guide
Business EnglishInterview EnglishUniversity Students
B21
187 oraciones
How To Bake Sourdough Like A Pro
Business EnglishDaily ConversationUniversity Students
C13
51 oraciones
Business Partner C1. Unit 1. Video 1.1.1.
Business EnglishUniversity StudentsWorking Adults
C14
78 oraciones
Connect Slack to Salesforce with Hosted MCP Servers | Salesforce Headless 360 Decoded
Business EnglishUniversity StudentsWorking Adults
Vocabulario y notas de pronunciación para esta lección
Esta lección de conversación de nivel C1 se basa en el vídeo “Provision LEMP with Ansible on a Raspberry Pi Cluster”. Las palabras que más se repiten: server, file, ansible, Raspberry, install. Este vídeo tiene 58 frases y 974 palabras para practicar shadowing. La parte hablada dura 5:41. El hablante habla a un ritmo natural de unas 172 palabras por minuto, cercano a una conversación cotidiana. Solo el 76 % de las palabras está entre las 3.000 más comunes del inglés, por lo que el vocabulario es exigente.
Vocabulario clave de este vídeo
Las 14 palabras más avanzadas del vídeo, con su pronunciación y significado:
| Palabra | Pronunciación | Significado |
|---|---|---|
| ansible sustantivo | /ˈæn.sɪ.bəl/ | ansible |
| playbook sustantivo | /ˈpleɪ.bʊk/ | libro de jugadas, manual estratégico |
| cluster sustantivo | /ˈklʌstɚ/ | aglomeración, agrupamiento |
| configure verbo | /kənˈfɪɡə(ɹ)/ | configurar |
| alternately adverbio | /ˈɔl.tɚ.nət.li/ | alternativamente, por turno |
| firewall sustantivo | /ˈfaɪ(ə)ɹˌwɔl/ | muro cortafuego |
| refresh verbo | /ɹɪˈfɹɛʃ/ | refrescar |
| replica sustantivo | /ˈɹɛplɪkə/ | réplica, trasunto |
| deploy verbo | /dɪˈplɔɪ/ | desplegar |
| specify verbo | /ˈspɛs.əˌfaɪ/ | especificar, circunstanciar |
| node sustantivo | /noʊd/ | nudo, ñudo |
| module sustantivo | /ˈmɑd͡ʒul/ | módulo |
| configuration sustantivo | /kənˌfɪɡ.əˈɹeɪ̯.ʃən/ | configuración |
| liking sustantivo | /ˈlaɪkɪŋ/ | agrado, agradamiento |
Phrasal verbs que vas a escuchar
| Palabra | Significado |
|---|---|
| find out verbo | averiguar, anoticiarse |
| split up verbo | desparejarse, separarse |
| turn off verbo | apagar |
Gramática en este vídeo
Las estructuras que más usa el hablante, con las palabras exactas del vídeo:
| Estructura | En el vídeo |
|---|---|
| Present perfect have/has + participio pasado — una acción pasada que sigue importando ahora | I've split · I've set · I've already copied |
| Oraciones de relativo who / which + oración — información extra sobre una persona o cosa | balancer, which is · servers, which is · file which has |
| Voz pasiva be + participio pasado — importa lo que ocurre, no quién lo hace | is sped · are turned |
Pronunciación a tener en cuenta
El hablante usa 27 contracciones y formas reducidas, como I've, I'll, I'm. Dilas en su forma corta, tal como las oyes.
- Los sonidos de “sh” y “zh”: refresh /ɹɪˈfɹɛʃ/, configuration /kənˌfɪɡ.əˈɹeɪ̯.ʃən/
- Palabras largas — cuida el acento: alternately /ˈɔl.tɚ.nət.li/, configuration /kənˌfɪɡ.əˈɹeɪ̯.ʃən/
Cómo practicar con este vídeo
- Escucha el vídeo entero una vez sin hablar y anota las palabras que no conoces.
- Empieza a velocidad 0,75×, haz shadowing frase por frase y vuelve a la velocidad normal cuando te resulte fácil.
- Grábate y compara con el original, prestando atención a palabras como ansible, playbook, cluster.
¿Qué es la Técnica de Shadowing?
Shadowing es una técnica de aprendizaje de idiomas respaldada por la ciencia, desarrollada originalmente para la formación de intérpretes profesionales y popularizada por el políglota Dr. Alexander Arguelles. El método es simple pero poderoso: escuchas audio en inglés nativo y lo repites en voz alta de inmediato, como una sombra que sigue al hablante con solo 1-2 segundos de retraso. A diferencia de la escucha pasiva o los ejercicios de gramática, el shadowing obliga a tu cerebro y músculos de la boca a procesar y reproducir simultáneamente patrones de habla reales. Las investigaciones muestran que mejora significativamente la precisión de la pronunciación, la entonación, el ritmo, el habla conectada, la comprensión auditiva y la fluidez al hablar, convirtiéndola en una de las metodologías más efectivas para la preparación del IELTS Speaking y la comunicación en inglés en el mundo real.