Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now What is the differenet between CMD vs Entrypoint?CMD commands are ignored by Daemon when there are parameters stated within the docker run command.ENTRYPOINT instructions are not ignored but instead are appended as command line parameters by treating those as arguments of the command.

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now List of dockerfile instructions and its Brief Summary?FROM: Create a basic image like httpd.RUN: It is to build the containerMAINTAINER: Creates the images.ENV: Environment for image.COPY: Copies the file to images.

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now What is the differenet between docker exec and attach?Docker exec executes new command or create a new process in containerDocker attach conncects the standard input/output/error of main process inside the container.

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now What is the differenet between docker stop and kill?Docker stop command stop a running container by sending SIGTERM signal to the root (PID 1) in container.Docker kill command kills one or more containers.

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now What is the differenet between docker pause and unpause?Pause is to stop the process running inside containersUnpause is to resume the paused process inside containers

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Components of Docker and its Brief SummaryDocker client – Docker user to communicate with DockerDocker host – It Consists of dockerd(daemon),containers and imagesRegistry – It stores images where we can use docker pull to pull images from registry.

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now 1.docker –version: This command helps you know the installed version of the docker software on your system. 2.docker pull nginx: This command helps you pull images from the central docker repository. 3.docker images: This command helps you in listing all the docker images, downloaded on your system. 4.docker run –it -d centos: This command

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now The format of Dockerfile is similar to the below syntax: # Comment INSTRUCTION arguments A Dockerfile must start with a FROM instruction. There are multiple INSTRUCTIONS that are available in Dockerfile, some of these include: FROM RUN CMD LABEL EXPOSE FROM: The FROM instruction specifies the Base Image from which you are building. RUN:

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Docker Exec: The docker container exec command runs a new command in a running container. The command started using docker exec only runs while the container’s primary process (PID 1) is running, and it is not restarted if the container is restarted. docker exec [OPTIONS] CONTAINER COMMAND [ARG…] Docker attach: When we start a

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Docker Stop: This command will stop the containers which are running. docker stop [container id or name] Docker Kill: This command will kill the container by stopping its execution immediately. docker kill [container id or name] The difference between ‘docker kill’ and ‘docker stop’ gives the container time to shutdown in any situations, when

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Docker exec: it is basically use to run a command in a running container docker exec [OPTIONS] CONTAINER COMMAND [ARG…] Docker attach: Attach local standard input, output, and error streams to a running container docker attach [OPTIONS] CONTAINER

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Docker stop : Stop one or more running containers docker stop [OPTIONS] CONTAINER [CONTAINER…] Docker kill: kill the container which sends signals docker kill [OPTIONS] CONTAINER [CONTAINER…]

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now DOCKER PAUSE: It will suspends all processes in the specified containers. It means that the processes in the container stop running, and they are be able to resumed later. docker pause [container id or name] DOCKER UNPAUSE: It will resumes all the processes in the specified container. It means recovery container all processes. docker

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Docker Pause: Pause all processes within one or more containers docker pause CONTAINER [CONTAINER…] Docker Unpause: Unpause all processes within one or more containers docker unpause CONTAINER [CONTAINER…]

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now the four main components of docker are: Docker client and server  Docker image  Docker registry  Docker container  Docker client and server: The communication between the Docker client and the Docker host is via a REST API. Docker image: A Docker image is a template that contains instructions for the Docker container. That template is

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now 1. docker -version This command is used to get the currently installed version of docker 2. docker pull This command is used to pull images from the docker repository(hub.docker.com) 3. docker create This command is used to create container from an image 4. docker start This command is used to start the container 5. docker

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now DOCKER: It is the world’s leading software container technology which is used for creating and managing containers.Docker is an open platform, once we build a docker container, we can run it anywhere, say it windows, Linux, mac whether on a laptop, data center, or in the cloud.The whole idea of docker is for developers

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now provider “aws” {region = “ap-south-1”access_key = “”secret_key = “”} provider “github” {token = “”organization = “”} variable “instance_count” {type = numberdescription = “This is for demo of number variable”default = 2 }variable “users” {type = “list”default = [“bharath”, “sharath”, “nikhil”]description = “This is for demo of list variable”} variable “amis” {type = “map”default =

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now provider “aws” {access_key = “”secret_key = “”region = “eu-east-2”} resource “aws_instance” “web” {ami = “ami-xbbsj”instance_type = “t2.micro”count = 1tags = {Name = “Demo”}} provisioner “file” {source = “conf/install-apache.yml”destination = “/etc/install-apache.yml”} provisioner “remote-exec” {inline = [“sudo apt update”, “sudo apt install python3 -y”, “sudo apt install ansible -y”] } provisioner “local-exec” {command = “ANSIBLE_HOST_KEY_CHECKING=False ansible-playbook

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now CMD You can set default commands with parameters using the CMD instruction. If you run a Docker container without specifying any additional CLI commands, the CMD instruction will be executed. You can include an executable as the default command. However, if you choose to omit it, you will have to specify an ENTRYPOINT instruction