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 drivers are used to store image layers, and to store data in the writable layer of a container. Types are overlay,overlay2,fuse-overlayfs,btrfs,zfs,vfs,aufs and devicemapper. overlay2 is the default storage driver.

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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

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 storage driver controls how images and containers are stored and managed on your Docker host.

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 images and containers in Docker host are stored, managed and mapped using some pluggable architecture. This plugins are known as Docker Storage Drivers. Types: Driver Description overlay2 overlay2 is the preferred storage driver for all currently supported Linux distributions, and requires no extra configuration. fuse-overlayfs fuse-overlayfsis preferred only for running Rootless Docker on 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 Steps used to create the docker image create a docker containerattach to itapt updateapt install gitapt install ntpapt install apache2docker commit -a”Aji Raphel” -m”created a docker image with ubuntu+git+ntp+apache2″ b3bab63b207d aji_ubuntu

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 Create one Image which have base as centos and with git – ntp – httpd.

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 Create one Image which have base as ubuntu and with git – ntp – apache2

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 akilan_centos_container -itd centosdocker attach 47ff211e687b8a499d1a213132c9141cfd8e4eb8d167618c941de3ad8bf59ddadocker psdocker ps|grep akilan2010 docker commit -a “akilan” -m “centos-git-httpd-akilan” \d 47ff211e687b8a499d1a213132c9141cfd8e4eb8d167618c941de3ad8bf59dda centos-git-httpd-akilandocker 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 Docker image is a collection of files systems A docker image acts as a blueprint for docker container. File systems are layered over each other Layer 0 must contain a root filesystem Each layer in image will have 40 character length UUID generated by SHA 256 algorithm. The topmost layer will have priority. All

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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 Images are the base of a container. Images are like classes and containers are like objects. We can create any number of containers from an image. Images can be created from Dockerfile or we can pull from registry. Images can have multiple layers. Images have root file systems , PID, USER namespace etc. Image

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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 supports several storage drivers, using a pluggable architecture. The storage driver controls how images and containers are stored and managed on your Docker host. Docker uses storage drivers to store image layers Docker uses storage drivers to store data in the writable layer of a container. The container’s writable layer does not persist

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 drivers are used to write to the container’s writable layer. overlay2 is the most commonly used storage driver nowadays. overlay2 is the default storage driver.

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 drivers are used to store data in containers writeable layer. The data in storage driver doesnt persist when container is deleted Types of storage drivers are: overlay overlay2 aufs devicemapper fuse-overlayfs vfs btrfs

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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 Q1. – What is the use of “docker update” commands? with example and image “docker update” is used to limit the usage of resources a container can use. CPU usage can be limited by CPU time, no.of CPUs used, or which CPUs are used. Memory usage can be limited for Main Memory as well

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 This command is used for waiting one or more containers to stop. We have to open 2 terminals. In one of them just put docker wait and in the other try to stop the same container. We can see the first terminal with docker wait is returned 0 and stopped waiting. docker wait renamed1

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 It is used for updating container’s configuration. A container have different configurations. We can change those configurations via docker update command. docker update –restart=on-failure:3 renamed1 In the above example we are changing the restart policy of a container.