Madhurig at 11:41, 4 February 2025

2025-02-04T11:41:17Z

Nirmala Venkat: Created page with "
{| border="1" |- || '''Visual Cue''' || '''Narration''' |- | style="border-top:0.5pt solid #000000;border-bottom:0.5pt..."

2025-01-20T11:02:11Z

Created page with "<div style="margin-left:1.27cm;margin-right:0cm;"></div> {| border="1" |- || '''Visual Cue''' || '''Narration''' |- | style="border-top:0.5pt solid #000000;border-bottom:0.5pt..."

New page

<div style="margin-left:1.27cm;margin-right:0cm;"></div>
{| border="1"
|-
|| '''Visual Cue'''
|| '''Narration'''
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Show Slide:

'''Title Slide'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Hello and welcome to the Spoken Tutorial on “'''Docker Networking”.'''
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Show Slide:

'''Learning Objectives'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | In this tutorial, we will learn about:
* <div style="margin-left:1.27cm;margin-right:0cm;">Fundamentals of Docker networking.</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">Connecting containers and establishing communication links.</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">Configuring port exposure and service exposure.</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">Deleting docker network</div>
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Show Slide:

'''System Requirements'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | To record this tutorial, I am using
* <div style="margin-left:1.27cm;margin-right:0cm;">'''Ubuntu Linux '''OS version '''22.04'''</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">'''Docker version 27.0.2'''</div>
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Show Slide:

'''Prerequisite'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | To follow this tutorial,
* <div style="margin-left:1.27cm;margin-right:0cm;">You must have basic knowledge of using Linux terminal</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">For pre-requisite Linux tutorials, please visit this website</div>

|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Show Slide:

'''Fundamentals of Docker networking'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" |
* <div style="margin-left:1.27cm;margin-right:0cm;">Docker networking involves various components and configurations</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">Docker uses network namespaces to isolate network resources.</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">Docker facilitates this through network links and service discovery mechanisms</div>
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Show Slide:

'''Types of Docker networks'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" |

{| style="border-spacing:0;width:7.761cm;"
|- style="border:none;padding:0.176cm;"
|| Docker provides several types of networks:
|-
|}
* <div style="margin-left:1.27cm;margin-right:0cm;">'''Bridge Network''':It is the default network type</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">'''Host Network''': The Containers share the host’s network stack</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">'''Overlay Network''': It enables communication between containers</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">'''Macvlan Network''': It assigns a MAC address to each container, making it appear as a physical device</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">'''None Network:''' It disables networking for the container</div>
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" |
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" |

In this tutorial we will demonstrate how to use '''Bridge Network.'''
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Open Linux terminal

'''Create a Docker network'''
Type command '''docker network create newnetwork '''in terminal

Highlight '''network id'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" |
Open your''' terminal'''.

Let us first create a docker network.

To create a docker network

Type '''docker space network space create space newnetwork''' and press '''Enter'''

Here,''' newnetwork''' is the name of the network.

We can see a network id as output related to the created network.

|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Type command

'''docker network ls'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | To view all the docker network, type the command

'''docker network ls'''

Here you can see all the '''docker networks'''

with '''newnetwork'''
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Terminal Command:

Highlight '''container id'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Next, let's connect containers.

<div style="color:#000000;">We will be using a '''nginx '''docker image.</div>

<div style="color:#000000;">We'll start a container and connect it to the network using the command as shown.</div>

This command runs a container named '''container1''' and connects it to '''newnetwork.'''

|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Terminal Command:

Highlight '''container id'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Similarly, let us run another container named container2 with '''curlimages/curl '''image

Type the command as shown.

Here the nginx container is serving as the server

And we will use the curl container to act as the client

Now, both containers are connected to the same network.

They can communicate with each other.
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Terminal Command:

Highlight '''response'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | To check the connectivity between containers, we use the command, as shown.

The containers will return a webpage response.

The response will contain '''nginx''' welcome page in html format
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Only narration.

| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Now, let's learn about exposing ports.
<div style="color:#000000;">Ports expose Docker container services to the host or other networks</div>
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Terminal Command:

'''docker run -d -p 8080:80 nginx'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | For example, to bind port 8080 on your host to port 80 in the '''container''', use

'''docker space run space hyphen d space hyphen p space 8080:80 space nginx '''and press '''Enter'''

This command exposes port 80 of the container '''nginx''' to port 8080 on the host.

Now, service is running on port '''80 '''within the container.

We can access this via port '''8080''' on the host machine
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Open Firefox browser.

Type the URL [http://localhost:8080/ http://localhost:8080]
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Now let us view the running nginx web server.

Open the web browser and type the url

[http://localhost:8080/ http://localhost:8080]

|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | The''' nginx welcome '''page will open
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | This is the welcome page for nginx web server.
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Terminal Command

'''docker network ls'''

All the docker network with network id will appear

| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Switching back to the terminal.

Let us see how to delete a created network.

Type

'''docker space network space ls'''

Here we can see all the '''docker networks '''

|-
| style="border-top:none;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" |

'''docker network rm <NETWORK_ID>'''

| style="border-top:none;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" |

To remove the network we will use the remove command with network id.

Let us remove the third network from the list.

copy the network_id

Type '''docker space network space rm and paste the id.'''
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | '''Error appears '''

| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | This error appears because some containers are using the '''newnetwork'''

To fix this error we have to first stop all the containers using the network '''newnetwork'''
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" |

<div style="color:#ff0000;"></div>
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | To stop all the containers under the same network.

Type the command as shown.

'''docker ps -q --filter "network=newnetwork" | xargs docker stop'''

It displays the container id that are stopped which used '''newnetwork''' as network

|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" |

Type '''docker space network space rm and paste the id.'''

| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Now we can remove the network.

Type '''docker network ls'''

To remove the network we will use the remove command with network id.

Let us remove the third network from the list.

copy the '''network id'''

Type '''docker space network space rm and paste the id.'''

The network '''newnetwork''' is successfully removed with network id as shown.

|-
| style="border-top:none;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" |

'''docker network prune'''

A warning will appear

'''WARNING! This will remove all custom networks not used by at least one container.'''

'''Are you sure you want to continue? [y/N]'''

| style="border-top:none;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" |

You can also remove all the unused '''docker network '''at once.

For that type

'''docker space network space prune'''

A warning will appear.

Type '''y '''and press '''Enter '''to continue removing the '''docker networks'''

|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Clicking on terminal close button
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Close the t'''erminal window.'''
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Show Slide:

'''Summary'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | This brings us to the end of this tutorial. Let us summarize.

In this tutorial, we learnt about
* <div style="margin-left:1.27cm;margin-right:0cm;">Fundamentals of Docker networking</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">Connecting containers and establishing communication links</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">Configuring port exposure and service exposure</div>
* <div style="margin-left:1.27cm;margin-right:0cm;">Deleting docker network</div>
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Show Slide: '''About Spoken Tutorial project'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | The video at the following link summarizes the '''Spoken Tutorial project'''.

Please download and watch it
|-
| style="background-color:#ffffff;border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.095cm;padding-right:0.191cm;" | Show Slide: '''Spoken Tutorial Workshops'''
| style="border-top:0.5pt solid #000000;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.079cm;padding-right:0.191cm;" | <span style="background-color:#ffffff;">The </span><span style="background-color:#ffffff;">'''Spoken Tutorial Project'''</span><span style="background-color:#ffffff;"> team </span>conducts workshops and gives certificates.

For more details, please write to us.
|-
| style="background-color:#ffffff;border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.095cm;padding-right:0.191cm;" | Show Slide:

'''Answers for THIS Spoken Tutorial'''
| style="background-color:#ffffff;border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.095cm;padding-right:0.191cm;" | Please post your timed queries in this forum.
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Show Slide: '''FOSSEE Forum'''
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | For any general or technical questions on '''Docker''', visit the FOSSEE forum and post your question.
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | Slide: '''Acknowledgement'''

| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | '''Spoken Tutorial '''Project<span style="color:#ff0000;"> </span>was established by the''' Ministry of Education''',''' Government of India'''.
|-
| style="border-top:0.5pt solid #000000;border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | <div style="color:#000000;">Show slide:</div>

<div style="color:#000000;">'''Thank You'''</div>
| style="border:0.5pt solid #000000;padding-top:0cm;padding-bottom:0cm;padding-left:0.092cm;padding-right:0.191cm;" | This is Aditya Kushwaha, a FOSSEE Semester long intern 2024, IIT Bombay, signing off.

Thanks for joining.
|-
|}

Docker/C3/Docker-Networking/English - Revision history

Madhurig at 11:41, 4 February 2025

Nirmala Venkat: Created page with " {| border="1" |- || '''Visual Cue''' || '''Narration''' |- | style="border-top:0.5pt solid #000000;border-bottom:0.5pt..."

Nirmala Venkat: Created page with "
{| border="1" |- || '''Visual Cue''' || '''Narration''' |- | style="border-top:0.5pt solid #000000;border-bottom:0.5pt..."