6. DOCKER

MONOLITHIC    : Single server multiple services single DB.
MICRO SERVICE : Multiple servers Multiple services with multiple DB's

how to select the architecture: Based on application and its services.

in Micro services we dont use servers, we use Containers.


Container: is a Virtual Machine without OS.
Docker: its a tool used to create Container.
Image: consist of os & packages which are already installed.

server = Vm = conatiner

Docker: 

It is an open source centralized platform designed to create, deploy and run applications.
Docker is written in the Go language.
Docker creates containers on host O.S to run applications. (computer/server os)
We can install Docker on any O.S but the docker engine runs natively on Linux distribution.
It allows applications to use the same Linux kernel as a system on the host computer, rather than creating a whole virtual O.S.
Before Docker Docker performs O.S level Virtualization also known as Containerization.
process of packing application along with its dependencies.
many users face problems that a particular code is running in the developer’s system but not in the user system.
It was initially released in March 2013, and developed by Solomon Hykes and Sebastian Pahl.
Docker is a set of platform-as-a-service that use O.S level Virtualization, where as VM ware uses Hardware level Virtualization.
Container have O.S files but its negligible in size compared to original files of that O.S.


COMPONENTS:

CLIENT: It takes the commands and executes with communication docker daemon
HOST: The place where you installed docker.
DAEMON: Deals with docker componets(images, containers, volumes ----). it is inside docker host.
REGISTRY: It stores all the Images.

============================================

DAY-02:
Installation:
yum install docker -y
systemctl restart docker.service
systemctl status docker.service
docker version

DOCKER COMMANDS:

docker pull ubuntu: to get ubuntu image from registry
docker images : to list the images 
docker run ubuntu : to create a conatiners
docker ps -a  : to list all the containers
docker ps : to list running containers only
docker run --name raham1 ubuntu : to give the name for container
docker run -it --name raham2 ubuntu : to go inside of a container
(it = interactive terminal, will go inside container, -d means detach mode will not go inside the container)
cat /etc/os-release : to see the flavour of linux
docker inspect cont-name : to see the full infromation of a container.
docker attach cont-name : to go inside the container.


inside container: note: in ubuntu pkg manager is apt (advance package tool)
apt update -y
apt install maven -y
apt install mysql-server -y
mkdir raham & touch abc.txt
raham2 (cont) -- > install maven,mysql db & files -- > image form container -- > image

os level of virtualization --- > content inside the os will be on image now

ctrl p q : to exit from container

docker commit raham2 swiggy:v1     : to create image from container

====================================================================================

DOCKER FILE: 
It is an automated method to create docker images.
in docker file D must be captial.
in single folder we need to have only one docker file.
docker file will have some componets inside it.
each component is on CAPITAL letter.

write Docker file -- > Build -- > Image

docker build -t image-name .

FROM : Used for base image
RUN  : Used to execute commands (During image creation)
CMD  : Used to execute commands (During Container creation)
COPY : used to copy local files to container
ADD : used to files on internet to container & used for exctraction of files.
WORKDIR : Takes you to the desried directory ( defaut / = /tmp)
LABEL : Used to attach labels to containers like email, author ----
ENV   : To pass environment variables (inside the containers)
args  : to pass value (outside of container)

EXAMPLE-1:

FROM ubuntu
RUN apt update -y
RUN apt install maven -y
RUN mkdir raham
RUN touch raham/abc.txt
================================================
EXAMPLE-2:
FROM ubuntu
RUN apt update -y
RUN apt install maven -y
RUN mkdir raham
RUN touch raham/abc.txt
COPY index.html /tmp
COPY apache-maven-3.6.3-bin.tar.gz /tmp
ADD https://dlcdn.apache.org/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz /opt
=======================================================
EXAMPLE-3:
FROM ubuntu
RUN apt update -y
RUN apt install maven -y
RUN mkdir raham
RUN touch raham/abc.txt
WORKDIR /tmp
==========================
EXAMPLE-4:
FROM ubuntu
RUN apt update -y
RUN apt install maven -y
RUN mkdir raham
RUN touch raham/abc.txt
LABEL user raham
ENV client swiggy

HISTORY:

    1  yum install docker -y
    2  systemctl restart docker.service
    3  systemctl status docker.service
    4  docker -v
    5  docker version
    6  docker pull ubuntu
    7  docker images
    8  docker run ubuntu
    9  docker ps -a
   10  docker run --name raham1 ubuntu
   11  docker ps -a
   12  docker run -it --name raham2 ubuntu
   13  docker ps -a
   14  docker ps
   15  docker commit raham2 swiggy:v1
   16  docker images
   17  docker run -it --name raham3 swiggy:v1
   18  ll
   19  vim Dockerfile
   20  docker build -t swiggy:v2 .
   21  cat Dockerfile
   22  docker images
   23  docker ps -a
   24  docker run -it --name raham4 swiggy:v1 /bin/bash
   25  docker run -it --name raham5 swiggy:v2 /bin/bash
   26  vim Dockerfile
   27  docker build -t swiggy:v2 .
   28  docker run -it --name raham6 swiggy:v2 /bin/bash
   29  docker run -it --name raham7 swiggy:v2
   30  mysql --version
   31  vim index.html
   32  ll
   33  vim Dockerfile
   34  wget https://dlcdn.apache.org/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz
   35  ll
   36  vim Dockerfile
   37  docker build -t swiggy:v3 .
   38  ll
   39  vim Dockerfile
   40  docker build -t swiggy:v3 .
   41  docker run -it --name raham8 swiggy:v3
   42  docker ps -a
   43  docker start raham8
   44  docker ps -a
   45  vim Dockerfile
   46  docker run -it --name raham8 swiggy:v3
   47  docker build -t swiggy:v3 .
   48  docker run -it --name raham9 swiggy:v3
   49  vim Dockerfile
   50  docker build -t swiggy:v3 .
   51  docker run -it --name raham10 swiggy:v1
   52  docker run -it --name raham11 swiggy:v3
   53  vim Dockerfile
   54  docker build -t swiggy:v3 .
   55  docker images
   56  docker ps -a
   57  docker inspect raham11
   58  docker run -itd --name raham12 swiggy:v3
   59  dockr ps -a
   60  dockrr ps -a
   61  docker ps -a
   62  docker inspect raham12
   63  docker inspect raham12 | grep -i label
   64  docker inspect raham12 | grep -i labels
   65  docker inspect raham12 | grep -i raham
   66  vim Dockerfile
   67  docker build -t swiggy:v3 .
   68  docker run -itd --name raham13 swiggy:v3
   69  docker ps -a
   70  docker attach raham13
   71  docker run --name some-mysql -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mysql:tag
   72  docker run --name some-mysql -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mysql:8.0.33
   73  docker ps -a
   74  history

=============================================================================================================================================================

DAY-03:

VOLUMES: 

By default when we create a volume the data is also going store on host.

PART-1 (CONT -- > CONT)

1. DOCKER FILE

FROM ubuntu
VOLUME ["/volume1"]

docker build -t raham:v1 .
docker run -it --name cont1 raham:v1
crerate some files inside cont-1
docker run -it --name cont2 --volumes-from=cont1 --privileged=true ubuntu

2. FROM RUNTIME 

docker run -it --name cont3 -v volume2 ubuntu
cd volume2  -- > create some files
docker run -it --name cont4 --volumes-from=cont3 --privileged=true ubuntu

3. FROM COMMANDS (Volume Mounting)

docker volume ls
docker volume create raham1
docker volume inspect raham1
cd /var/lib/docker/volumes/raham1/_data
create some files 
docker run -it --name cont5 --mount source=raham1,destination=/raham1 ubuntu


PART-2: (CONT -- > LOCAL)

CONT --- > CONT COPIED THE FILES
I WANT TO COPY CONTENT FROM CONTAINER TO MY LOCAL 
docker volume ls
docker volume inspect raham1
cd /var/lib/docker/volumes/raham1/_data
cp * -R /root/

PART-3: (LOCAL -- > CONT)

1. Dockerfile

2. 
cd /home/ec2-user
touch file{1..5}
docker run -it --name cont7 -v /home/ec2-user:/xyz ubuntu
cd /xyz -- > 11 -- > create files -- > local -- >

================================================================================

DOCKER SYSTEM COMMANDS: To show the memory utilization of Docker Components.

docker info
docker system df
docker system df -v
docker system prune --all  : Remove all unused images not just dangling ones
docker system prune --force: Do not prompt for confirmation
docker system prune --volumes : To remove unused volumes


==========================================================================

JENKINS SETUP USING DOCKER IMAGES:

docker run -it --name jenkins jenkins/jenkins:lts


==========================================================================

DEPLOYMENT:

vim Dockerfile

FROM ubuntu
RUN apt-get update -y
RUN apt-get install apache2 -y
COPY index.html /var/www/html/
CMD ["/usr/sbin/apachectl", "-D", "FOREGROUND"]


docker build -t image:v1 .
docker run -itd --name app1 -p 82:80 image

82: container port & 80: image port (installed httpd -- > 80)


index.html:

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body {font-family: Arial, Helvetica, sans-serif;}

/* Full-width input fields */
input[type=text], input[type=password] {
  width: 100%;
  padding: 12px 20px;
  margin: 8px 0;
  display: inline-block;
  border: 1px solid #ccc;
  box-sizing: border-box;
}

/* Set a style for all buttons */
button {
  background-color: #04AA6D;
  color: white;
  padding: 14px 20px;
  margin: 8px 0;
  border: none;
  cursor: pointer;
  width: 100%;
}

button:hover {
  opacity: 0.8;
}

/* Extra styles for the cancel button */
.cancelbtn {
  width: auto;
  padding: 10px 18px;
  background-color: #f44336;
}

/* Center the image and position the close button */
.imgcontainer {
  text-align: center;
  margin: 24px 0 12px 0;
  position: relative;
}

img.avatar {
  width: 40%;
  border-radius: 50%;
}

.container {
  padding: 16px;
}

span.psw {
  float: right;
  padding-top: 16px;
}

/* The Modal (background) */
.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Stay in place */
  z-index: 1; /* Sit on top */
  left: 0;
  top: 0;
  width: 100%; /* Full width */
  height: 100%; /* Full height */
  overflow: auto; /* Enable scroll if needed */
  background-color: rgb(0,0,0); /* Fallback color */
  background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
  padding-top: 60px;
}

/* Modal Content/Box */
.modal-content {
  background-color: #fefefe;
  margin: 5% auto 15% auto; /* 5% from the top, 15% from the bottom and centered */
  border: 1px solid #888;
  width: 80%; /* Could be more or less, depending on screen size */
}

/* The Close Button (x) */
.close {
  position: absolute;
  right: 25px;
  top: 0;
  color: #000;
  font-size: 35px;
  font-weight: bold;
}

.close:hover,
.close:focus {
  color: red;
  cursor: pointer;
}

/* Add Zoom Animation */
.animate {
  -webkit-animation: animatezoom 0.6s;
  animation: animatezoom 0.6s
}

@-webkit-keyframes animatezoom {
  from {-webkit-transform: scale(0)} 
  to {-webkit-transform: scale(1)}
}
  
@keyframes animatezoom {
  from {transform: scale(0)} 
  to {transform: scale(1)}
}

/* Change styles for span and cancel button on extra small screens */
@media screen and (max-width: 300px) {
  span.psw {
     display: block;
     float: none;
  }
  .cancelbtn {
     width: 100%;
  }
}
</style>
</head>
<body>

<h2>DevOps By Raham V:2.0</h2>

<button onclick="document.getElementById('id01').style.display='block'" style="width:auto;">Login</button>

<div id="id01" class="modal">
  
  <form class="modal-content animate" action="/action_page.php" method="post">
    <div class="imgcontainer">
      <span onclick="document.getElementById('id01').style.display='none'" class="close" title="Close Modal">&times;</span>
      <img src="img_avatar2.png" alt="Avatar" class="avatar">
    </div>

    <div class="container">
      <label for="uname"><b>Username</b></label>
      <input type="text" placeholder="Enter Username" name="uname" required>

      <label for="psw"><b>Password</b></label>
      <input type="password" placeholder="Enter Password" name="psw" required>
        
      <button type="submit">Login</button>
      <label>
        <input type="checkbox" checked="checked" name="remember"> Remember me
      </label>
    </div>

    <div class="container" style="background-color:#f1f1f1">
      <button type="button" onclick="document.getElementById('id01').style.display='none'" class="cancelbtn">Cancel</button>
      <span class="psw">Forgot <a href="#">password?</a></span>
    </div>
  </form>
</div>

<script>
// Get the modal
var modal = document.getElementById('id01');

// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
    if (event.target == modal) {
        modal.style.display = "none";
    }
}
</script>

</body>
</html>


HISTORY:

 1  yum install docker -y
    2  docker pull ubuntu
    3  docker version
    4  docker images
    5  systemctl status docker
    6  systemctl start docker
    7  systemctl status docker
    8  docker images
    9  docker pull ubuntu
   10  vim Dockerfile
   11  docker images
   12  docker build -t raham:v1 .
   13  docker images
   14  docker run -it --name cont1 raham:v1
   15  docker ps -a
   16  docker run -it --name cont2 --volumes-from=cont1 --privileged=true  ubuntu
   17  docker ps -a
   18  docker attach cont1
   19  cat Dockerfile
   20  docker run -it --name cont3 -v volume2 ubuntu
   21  docker run -it --name cont4 --volumes-from=cont3 --priviliged=true ubuntu
   22  docker ps -a
   23  docker run -it --name cont4 --volumes-from=cont3 --privileged=true ubuntu
   24  docker attach cont3
   25  docker volumes ls
   26  docker volume ls
   27  docker volume create raham1
   28  docker volume ls
   29  docker inspect cont1
   30  docker volume inspect raham1
   31  cd /var/lib/docker/volumes/raham1/_data
   32  ll
   33  touch mountfiles{1..5}
   34  vim mountfiles1
   35  docker run -it --name cont5 --mount source=raham1,destination=/raham1 ubuntu
   36  ll
   37  docker run -it --name cont6 --mount source=raham1,destination=/abcd ubuntu
   38  LL
   39  ll
   40  cp * -R /root/
   41  cd /root/
   42  ll
   43  docker volume ks
   44  docker volume ls
   45  docker volume inspect raham1
   46  cd /var/lib/docker/volumes/raham1/_data
   47  ll
   48  CD
   49  cd
   50  cd /home/ec2-user/
   51  ll
   52  ls -al
   53  touch hostfiles{1..5}
   54  ll
   55  docker ps
   56  pwd
   57  ls
   58  docker run -it --name cont7 -v /home/ec2-user:/xyz ubuntu
   59  ll
   60  docker info
   61  docker system
   62  docker system df
   63  docker volume create raham2
   64  docker system df
   65  cd
   66  docker system df -v
   67  docker run -it --name cont6 --mount source=raham1,destination=/abcdef ubuntu
   68  docker pull jenkins/jenkis:lts
   69  docker pull jenkins/jenknis:lts
   70  docker pull jenkins/jenkins:lts
   71  docker pull centos:latest
   72  docker pull amazonlinux:latest
   73  docker system df -v
   74  docker system prune
   75  docker system df -v
   76  docker system prune
   77  docker system df -v
   78  docker system
   79  docker system COMMAND --help
   80  docker system prune --help
   81  docker system prune --volumes
   82  docker system prune --images
   83  docker system prune --all
   84  docker images
   85  docker run -it --name jenkins jenkins/jenkins:lts
   86  docker images
   87  docker pull jenkins/jenkins:lts-jdk11
   88  docker images
   89  docker run -it --name jenkins1 jenkins/jenkins:lts-jdk11
   90  docker pull jenkins/jenkins:2.401.1-lts-jdk11
   91  docker run -it --name cont8 jenkins/jenkins:2.401.1-lts-jdk11
   92  docker run -it --name cont9 -p 8080:8080 jenkins/jenkins:2.401.1-lts-jdk11
   93  docker images
   94  docker ps -a
   95  ll
   96  rm -rf *
   97  vim Dockerfile
   98  vim index.html
   99  docker build -t r:v1 .
  100  docker run -itd --name app1 -p 80:90 r:v1
  101  docker ps -a
  102  docker run -itd --name app1 -p 90:80 r:v1
  103  docker run -itd --name app2 -p 90:80 r:v1
  104  docker stop app1 app2
  105  docker rm  app1 app2
  106  docker run -itd --name app1 -p 80:80 r:v1
  107  docker ps -a
  108  docker run -itd --name app1 -p 81:80 r:v1
  109  docker run -itd --name app2 -p 81:80 r:v1
  110  docker run -itd --name app3 -p 82:80 r:v1
  111  cat Dockerfile

==================================================================================================== 

DAY-04:

DOCKER COMPOSE: Its a tool on docker used to create multiple containers at a single time.

COMPOSE FILE: we will give the infromation of the containers (Image, Port, Volume -----)
it is on YAML Format Which works on KEY-VALUE Pair.

HOW IT WORKS:

IMAGE -- > DOCKER FILE & INDEX.HTML
CONTAINER -- > COMPOSE.YML


Dockerfile

FROM ubuntu
RUN apt update -y
RUN apt install apache2 -y
COPY index.html /var/www/html
CMD ["/usr/sbin/apachectl", "-D", "FOREGROUND"]

docker-compose.yml

version: '3'
services:
  train:
    image: train:v1
    ports:
      - "8000:80"
    volumes:
      - "trainvolume"
  movies:
    image: movies:v1
    ports:
      - "8001:80"
    volumes:
      - "movievolume"
  recharge:
    image: recharge:v1
    ports:
      - "8002:80"
    volumes:
      - "rechargevolume"


COMMANDS:

docker-compose ps
docker-compose stop
docker-compose start
docker-compose pause
docker-compose unpause
docker-compose down (stop -- > delete)
docker-compose up -d
docker-compose top
docker-compose images
docker-compose logs


DOCKER HUB: To store our images on central

1. CREATE IMAGE & REPO
2. TAG IMAGE (docker tag recharge:v1 apn2993/paytm)
3. docker login (username & password)
4. docker push apn2993/paytm

NOTE: DockerHub will support only image for one repo.

NETWORK:

Docker networks are used to make a communication between the multiple containers that are running on same or different docker hosts. We have different types of docker networks.
Bridge Network
Host Network
None network
Overlay network

BRIDGE NETWORK: It is a default network that container will communicate with each other within the same host.

HOST NETWORK: When you Want your container IP and ec2 instance IP same then you use host network

NONE NETWORK: When you don’t Want The container to get exposed to the world, we use none network. It will not provide any network to our container.

OVERLAY NETWORK: Used to communicate containers with each other across the multiple docker hosts.

To create a network: docker network create network_name
To see the list: docker network ls
To delete a network: docker network rm network_name
To inspect: docker network inspect network_name
To connect a container to the network: docker network connect network_name container_id/name
apt install iputils-ping -y : command to install ping checks
To disconnect from the container: docker network disconnect network_name container_name
To prune: docker network prune

HISTORY:

   12  yum install docker -y
   13  systemctl start docker
   14  systemctl status docker
   15  yum install docker-compose -y
   16  sudo curl -L "https://github.com/docker/compose/releases/download/1.29.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
   17  ls /usr/local/bin/
   18  sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
   19  sudo chmod +x /usr/local/bin/docker-compose
   20  docker-compose version
   21  vim docker-compose.yml
   22  vim Dockerfile
   23  vim index.html
   24  docker build -t train:v1 .
   25  vi  docker-compose.yml
   26  docker-compose up -d
   27  docker ps
   28  vim docker-compose.yml
   29  vim index.html
   30  docker build -t movies:v1 .
   31  vim docker-compose.yml
   32  docker-compose up -d
   33  docker ps
   34  vim index.html
   35  docker build -t recharge:v1 .
   36  vim docker-compose.yml
   37  docker-compose up -d
   38  docker ps
   39  cat Dockerfile
   40  cat docker-compose.yml
   41  docker-compose ps
   42  docker images
   43  docker-compose images
   44  docker-compose logs
   45  docker-compose events
   46  docker-compose ps
   47  docker-compose stop
   48  docker-compose ps
   49  docker-compose start
   50  docker-compose pause
   51  docker-compose unpause
   52  docker-compose down4
   53  docker-compose down
   54  docker-compose ps
   55  docker-compose up -d
   56  docker-compose ps
   57  docker-compose scale root_movies_1 --replicas=2
   58  docker-compose up -d --scale=2
   59  docker-compose up -d --scale movies=5
   60  docker-compose ports
   61  docker-compose port
   62  docker-compose ls
   63  docker-compose top
   64  docker-compose service ls
   65  docker-compose service
   66  docker-compose services
   67  docker-compose  config
   68  docker images
   69  docker tag apn2993/paytm recharge:v1
   70  docker tag recharge:v1 apn2993/paytm
   71  docker images
   72  docker push apn2993/paytm
   73  docker login
   74  docker push apn2993/paytm
   75  docker images
   76  docker tag movies:v1 apn2993/abcd
   77  docker images
   78  docker push apn2993/abcd
   79  docker inspect movies:v1
   80  docker system df -v
   81  docker network ls
   82  docker ps
   83  docker network ls
   84  docker inspect 48da4552b779
   85  docker ps
   86  docker inspect e7b7cb67ef74
   87  docker inspect e7b7cb67ef74 | grep -i network
   88  docker network ls
   89  docker network create paytm
   90  docker network ls
   91  docker network inspect paytm
   92  docker ps -a
   93  docker network inspect paytm
   94  docker network ls
   95  docker ps
   96  docker network connect paytm e7b7cb67ef74
   97  docker network inspect paytm
   98  docker network connect paytm f5451a51caed
   99  docker network inspect paytm
  100  docker network rm paytm



HISTORY:

2  yum install docker -y
   13  systemctl start docker
   14  systemctl status docker
   15  yum install docker-compose -y
   16  sudo curl -L "https://github.com/docker/compose/releases/download/1.29.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
   17  ls /usr/local/bin/
   18  sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
   19  sudo chmod +x /usr/local/bin/docker-compose
   20  docker-compose version
   21  vim docker-compose.yml
   22  vim Dockerfile
   23  vim index.html
   24  docker build -t train:v1 .
   25  vi  docker-compose.yml
   26  docker-compose up -d
   27  docker ps
   28  vim docker-compose.yml
   29  vim index.html
   30  docker build -t movies:v1 .
   31  vim docker-compose.yml
   32  docker-compose up -d
   33  docker ps
   34  vim index.html
   35  docker build -t recharge:v1 .
   36  vim docker-compose.yml
   37  docker-compose up -d
   38  docker ps
   39  cat Dockerfile
   40  cat docker-compose.yml
   41  docker-compose ps
   42  docker images
   43  docker-compose images
   44  docker-compose logs
   45  docker-compose events
   46  docker-compose ps
   47  docker-compose stop
   48  docker-compose ps
   49  docker-compose start
   50  docker-compose pause
   51  docker-compose unpause
   52  docker-compose down4
   53  docker-compose down
   54  docker-compose ps
   55  docker-compose up -d
   56  docker-compose ps
   57  docker-compose scale root_movies_1 --replicas=2
   58  docker-compose up -d --scale=2
   59  docker-compose up -d --scale movies=5
   60  docker-compose ports
   61  docker-compose port
   62  docker-compose ls
   63  docker-compose top
   64  docker-compose service ls
   65  docker-compose service
   66  docker-compose services
   67  docker-compose  config
   68  docker images
   69  docker tag apn2993/paytm recharge:v1
   70  docker tag recharge:v1 apn2993/paytm
   71  docker images
   72  docker push apn2993/paytm
   73  docker login
   74  docker push apn2993/paytm
   75  docker images
   76  docker tag movies:v1 apn2993/abcd
   77  docker images
   78  docker push apn2993/abcd
   79  docker inspect movies:v1
   80  docker system df -v
   81  docker network ls
   82  docker ps
   83  docker network ls
   84  docker inspect 48da4552b779
   85  docker ps
   86  docker inspect e7b7cb67ef74
   87  docker inspect e7b7cb67ef74 | grep -i network
   88  docker network ls
   89  docker network create paytm
   90  docker network ls
   91  docker network inspect paytm
   92  docker ps -a
   93  docker network inspect paytm
   94  docker network ls
   95  docker ps
   96  docker network connect paytm e7b7cb67ef74
   97  docker network inspect paytm
   98  docker network connect paytm f5451a51caed
   99  docker network inspect paytm
  100  docker network rm paytm
  
  
  ==================================================================
  
  
  DAY-05:
  
  SWARM: Used to manage contaienrs on multiple servers.
MASTER: Used to create and distribute the containers.
WORKER: Used to Store container.
NOTE: To work with DS we need to enable Docker Engine.
If we delete one container it will create onother.

CLUSTER: Group of servers.
REPLICA: Copy of the Conatiner.


 
STEP-1: CRAETE 3 SERVERS (1 MANAGER, 2 WORKERS)
STEP-2: SET HOSTNAMES (hostnamectl set-hostname manager/worker1/worker2) && sudo -i
STEP-3: INSTALL AND START DOCKER
STEP-4: SETUP A CLUSTER (Manager -- > token -- > copy to worker node)

docker swarm init --advertise-addr 172.31.87.191 (PRIVATE IP)	

docker node ls : TO list number of worker nodes
docker service create --name paytm --publish 81:80 --replicas 3 rahamshaik/paytmmsmovies:latest
docker sevice ls : To list the services
docker service scale paytm=10 : To scale the services
docker service ps paytm : To list containers of Paytm Service only
docker service inspect paytm : To get the complet info of service
docker service update --image rahamshaik/nitdevops:latest paytm : To update the image
docker service rollback  paytm : To Rollback


HISTORY:

 1  yum install docker -y
    2  service docker start
    3  service docker status
    4  docker swarm init --advertise-addr 172.31.87.191
    5  docker node ls
    6  docker ps -a
    7  docker run -itd --name cont1 rahamshaik/paytmmsmovies:latest
    8  docker ps -a
    9  docker stop 5b22923a6a1e
   10  docker rm 5b22923a6a1e
   11  docker ps -a
   12  docker service create --name paytm -p 80:80 --replicas 3 rahamshaik/paytmmsmovies:latest
   13  docker ps
   14  docker service create --name paytm --publish 81:80 --replicas 3 rahamshaik/paytmmsmovies:latest
   15  docker service ls
   16  docker stop 1xiwvb7dqmb4
   17  docker service rm 1xiwvb7dqmb4
   18  docker service ls
   19  docker service create --name paytm --publish 81:80 --replicas 3 rahamshaik/paytmmsmovies:latest
   20  docker ps
   21  docker service ls
   22  docker service scale paytm=6
   23  docker service ls
   24  docker ps
   25  docker service scale paytm=10
   26  docker service ls
   27  docker service paytm ps
   28  docker service ps paytm
   29  docker service scale paytm=3
   30  docker service ps paytm
   31  docker ps
   32  docker stop 42f790d5d69a
   33  docker rm 42f790d5d69a
   34  docker ps
   35  docker stop 015cee27558f
   36  docker rm 015cee27558f
   37  docker ps
   38  docker run -itd --name cont1 ubuntu
   39  docker ps
   40  docker stop 39ce6ef358f4
   41  docker rm 39ce6ef358f4
   42  docker ps
   43  docker service ls
   44  docker service inspect paytm
   45  docker service update --image rahamshaik/paytmmsdth:latest paytm
   46  docker ps -a
   47  docker service ls
   48  docker service update --image rahamshaik/nitdevops:latest paytm
   49  docker service ls
   50  docker service rollback  paytm
   51  docker service logs paytm
   52  history


=========================================

DAY-07:


docker run -dit --name cont_name --memory=250m --cpus="0.25" image_name
to check: docker inspect cont_name | grep -i memory
to check: docker inspect cont_name | grep -i cpus

HISTORY:

 57  curl -L https://downloads.portainer.io/ce2-16/portainer-agent-stack.yml -o portainer-agent-stack.yml
   58  ll
   59  vim portainer-agent-stack.yml
   60  docker stack ls
   61  ls
   62  docker stack deploy -c portainer-agent-stack.yml protainer
   63  docker stack ls
   64  docker ps
   65  docker stack ls
   66  docker stack ps courses
   67  docker stack ps courses | grep -i Running
   68  docker stack ps portainer | grep -i Running
   69  docker stack ps protainer | grep -i Running
   70  docker volume ls
   71  docker service ls
   72  docker ps -a
   73  docker stack ls
   74  docker ps
   75  docker stop 346ceea27e06
   76  docker rm 346ceea27e06
   77  docker ps
   78  docker stack ls
   79  docker stack isspect courses
   80  docker stack inspect courses
   81  docker stack services  courses
   82  docker service rm 2u134dvewo24
   83  docker stack services  courses
   84  docker stack rm courses
   85  docker stack rm protainer
   86  docker ps -a
   87  lscpu
   88  lsmem
   89  docker ps -a
   90  docker run -itd --name cont2 rahamshaik/azurereponit
   91  docker ps -a
   92  docker run -itd --name cont3 --memory=250mb --cpu="0.25" rahamshaik/azurereponit
   93  docker run -itd --name cont3 --memory=250mb --cpus="0.25" rahamshaik/azurereponit
   94  docker inspect cont3
   95  docker inspect cont3 | grep -i cpus
   96  docker inspect cont3 | grep -i memory
   97  history


========================================================================================================================================================================