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 image is a collection of file system Can create multiple container from same image File systems are layered over each other Layer 0 is the base image All layers in a docker image is read only. Image layering is by Union Mounts

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 Storage Driver is used to store and manage images and containers on Docker host. Types of Storage Drivers aufs btrfs devicemapper vfs zfs

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 is a read-only template with instructions for creating a Docker container.. > An image may be an independent or may be based on other image with some customization. > It is a file which is used to execute the code in Docker container. >The docker image runs only in the docker platform.

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 Collection of file systems, ROOTFS, APPFS, USERFS. One copy of docker image can attach to many containers. From one image multiple containers can be created File system layered over each other. Higher layer wins. Each layer is each File system Layer 0 should be base image or Root FS Once image is attached to

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 image is a file to run code in container. It contains all the file/software that you needed to run your application. It has multiple layers. Each layer is originated from the prev. layer. The top layer is editable. We can create images out of existing images. We can add the lib or changes

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 run –name vin_centos -itd centos:latestdocker psdocker attach 083fb828fcad docker psdocker commit -a”Vineesh” -m”Updated Centos” 083fb828fcad vineesh_centos2docker imagesdocker run –name Vineesh_Centos2 -itd 32083f4af9bedocker psdocker exec a9c938de7bdb git

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 root@ip-172-31-28-155:/var/lib/docker# docker run -itd –name anoop_ubuntu_base ubuntubcba3eb8cfb3d221c9f8f753a65c86ee5ea924d8c69438342d3e83d429d572a9root@ip-172-31-28-155:/var/lib/docker# docker ps | grep anoopbcba3eb8cfb3 ubuntu “bash” 5 seconds ago Up 4 seconds anoop_ubuntu_baseroot@ip-172-31-28-155:/var/lib/docker# docker attach bcba3eb8cfb3 root@bcba3eb8cfb3:/# apt-get update root@bcba3eb8cfb3:/# apt-get install git root@bcba3eb8cfb3:/# apt-get install httpd root@bcba3eb8cfb3:/# apt-get install mini-httpd root@bcba3eb8cfb3:/# which git/usr/bin/git root@bcba3eb8cfb3:/# mini_httpdbind: Address already in use root@bcba3eb8cfb3:/# apt-get install ntpReading package lists…

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 created an image docker commit -a”jenish” -m”jenish” 1dc3e53e3e54 jenish_ubu docker run -itd jenish_ubu

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 Linux kernel device drivers are, essentially, a shared library of privileged, memory resident, low level hardware handling routines. It is Linux’s device drivers that handle the peculiarities of the devices they are managing. One of the basic features of is that it abstracts the handling of devices The following is a list of the

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 1993 docker run -itd –name=sjt ubuntu1995 docker ps |grep sjt1998 docker attach sjt apt-get update apt-get install git apt-get install ntp apt-get install apache2 1999 docker commit -a”Sujith Sunny” -m”ub-up-git-ap2″ sjt ub-up-git-ap22000 docker 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 Ideally, very little data is written to a container’s writable layer, and you use Docker volumes to write data. However, some workloads require you to be able to write to the container’s writable layer. This is where storage drivers come in.

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 All layers in a docker image is Read only. All layers in an image is merged to one layer while creating the container.. Docker image is a collection of files systems. A docker image is a template for docker container. One docker image can be used to create multiple containers File systems are layered

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 Docker Images and Explain in 10 bullet lines? Collection of file systems One copy of docker image get attached to each container. From one image multiple containers can be created Layered structure Each layer is each File system Layer 0 should be base image or Root FS Once image is attached to

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 Steps docker run –name aji_4 -itd centosattach to ityum install gityum install httpd yum install epel-releaseyum install -y ntp

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 image is a collection of file system (Root FS, USER FS and APP FS) One copy of Docker image get attached to each container created from the image We can create multiple containers from same image docker image made up of file system layered over each other i.e Layer-n(image n)….. –> Layer1(image 1)

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 uses storage drivers to store image layers, and to store data in the writable layer of a container. The container’s writable layer does not persist after the container is deleted, but is suitable for storing ephemeral data that is generated at runtime. Storage drivers are optimized for space efficiency, but (depending on the

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 image is a collection of files systems. A docker image is a template for docker container. One docker image can be used to create multiple containers File systems are layered over each other Layer 0 have the root filesystem Each layer in image will have 40 character length UUID generated by SHA 256

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 uses the storage driver to store image layers

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 run –name vin1 -itd ubuntu:latestdocker psdocker attach e80fd4a69088docker commit –helpdocker commit -a”VIneesh” -m”Added apache” e80fd4a69088 vineesh_ubuntudocker imagesdocker psdocker exec e80fd4a69088 gitdocker imagesdocker run -itd vineesh_ubuntudocker psdocker exec acdda25da2d2 git

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 image consists of RootFS + UserFS + AppFS