Install Docker for Linux

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In this microlearning, we will focus on how an on-premises server can be prepared for a eMagiz Deploy agent installation.

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Should you have any questions, please contact [[academy@emagiz.com>>mailto:academy@emagiz.com]].

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== 1. Prerequisites ==

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* Advanced knowledge of the eMagiz platform

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* Good understanding of eMagiz runtimes in general

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== 2. Key concepts ==

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In the new runtime architecture of eMagiz, Docker technology is used to deploy runtimes. eMagiz creates specific runtime images that contain the eMagiz runtime, and can be deployed in dockerized environments.

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In the below section the Linux variant is described in terms of how to prepare the server to allow the [[eMagiz Deploy Agent>>doc:Main.eMagiz Academy.Microlearnings.Intermediate Level.eMagiz Runtime Management.intermediate-runtime-management-deploy-agent.WebHome||target="blank"]] to be installed. That agent allows to download images from the eMagiz infrastructure.

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== 3. On-premises deployments ==

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===3.1 General requirements===

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These are the general requirements to allow the installation of the eMagiz Docker agent:

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* Standard configuration to ensure that communication between your server and eMagiz to ensure communication.

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** registry.emagiz.com:443

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** controlplane.emagiz.com:8000

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** controltower.kpn-dsh.com:443

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** Preferably the entry should be *.emagiz.com

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** Preferably the entry should be *.kpn-dsh.com{{/info}}

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* In case of a very strict firewall configuration, additional configuration is needed to communicate to the eMagiz infrastructure.

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** controltower.emagiz.com:443

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** controltower.kpn-dsh.com:443

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** controlbus.emagiz.com:443

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** controlplane.emagiz.com:443

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* When using cloudslot number **equal to or below** 125, the following configuration is needed to communicate to your JMS.

** 35.158.46.28:443

** 3.74.190.88:443

** 35.158.46.28:8443

** 3.74.190.88:8443

** 35.158.46.28:8444

** 3.74.190.88:8444

* When using a cloudslot number **above** 125, the following configuration is needed to communicate to your JMS.

** 3.74.209.20:443

** 3.76.127.155:443

** 3.74.209.20:8443

** 3.76.127.155:8443

** 3.74.209.20:8444

** 3.76.127.155:8444{{/warning}}

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===3.2 Installation Linux===

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Whenever Linux is selected as operating system, the latest version of Ubuntu will work. Other Linux distributions will also work such as Debian or Red Hat.

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==== 3.2.1 Set up Docker's apt repository ====

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# Add Docker's official GPG key:

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sudo apt-get update

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sudo apt-get install ca-certificates curl

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sudo install -m 0755 -d /etc/apt/keyrings

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sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc

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sudo chmod a+r /etc/apt/keyrings/docker.asc

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# Add the repository to Apt sources:

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echo \

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"deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \

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$(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \

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sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt-get update

==== 3.2.2 Install Docker ====

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sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

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To install or update docker on your machine, execute the following commands in powershell with administrative rights:

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Invoke-WebRequest -UseBasicParsing "https://raw.githubusercontent.com/microsoft/Windows-Containers/Main/helpful_tools/Install-DockerCE/install-docker-ce.ps1" -o install-docker-ce.ps1

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.\install-docker-ce.ps1

Example usage:

.\install-update-docker-ce.ps1 -DockerVersion DESIRED_VERSION

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To install the latest version of docker, you can use {{code language="cmd"}}e .\install-update-docker-ce.ps1{{/code}} without specifying the version flag.

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{{info}}lIt is advised to use Docker version 24.0.7 as this is the version being used in the latest eMagiz cloud template. We advise to align the on-premise Docker version and update it according to the release notes of the Cloud templates.

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{{warning}}Note: This process is service affecting, your running containers will be stopped and will need to be started again.{{/warning}}

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==== 3.2.3 Verify succesfull installation of the Docker Engine ====

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sudo docker run hello-world

Requires ~335 Mb space to install

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==== 3.2.4 Install eMagiz Deploy Agent ====

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Install the eMagiz Deploy agent as can be found in this [[microlearning>>doc:Main.eMagiz Academy.Microlearnings.Intermediate Level.eMagiz Runtime Management.intermediate-runtime-management-deploy-agent.WebHome||target="blank"]]

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== 4. Key takeaways ==

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* eMagiz uses runtime images to deploy emagiz runtime on dockerized environments. The runtime image holds all the information and components required to run the runtime

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* eMagiz has a specific agent that manages the download of that image to the on-premises server

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* The firewall of the on-premises environment should allow outgoing traffic without any restriction. In case that is not desirable, eMagiz can provide the addresses and ports needed to setup the right firewall rules.

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== 5. Suggested Additional Readings ==

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* [[Docker official installation guide>>https://docs.docker.com/engine/install/ubuntu/||target="blank"]]

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* Docker command line cheatsheet: [[image:Main.Images.Microlearning.WebHome@docker-cheatsheet.png]]

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