Linux Commands and Scripts

Install Portainer on Ubuntu 20.04 with Docker

In this article, we’ll explain how to install Portainer on Ubuntu 20.04 with Docker.

Portainer is powerful, open-source toolset that allows you to easily build and manage containers in Docker, Swarm, Kubernetes and Azure ACI. It works by hiding the complexity that makes managing containers hard, behind an easy to use GUI.

Prerequisites

  • Ubuntu 20.04 installed dedicated server or KVM VPS.
  • A root user access or normal user with administrative privileges.
  • Add A record of your preferred domain like port.example.com

Install Portainer on Ubuntu 20.04 with Docker

1. Keep server updated

Always keep your server up-to-date for security purpose.

# apt-get update -y

2. Install Docker

Install the required dependencies for Docker:

# apt-get install apt-transport-https ca-certificates curl gnupg-agent software-properties-common -y

Add the Docker CPG Key

# curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add –

Verify that you now have the key with the fingerprint 9DC8 5822 9FC7 DD38 854A  E2D8 8D81 803C 0EBF CD88, by searching for the last 8 characters of the fingerprint.

# sudo apt-key fingerprint 0EBFCD88

Output:

pub rsa4096 2017-02-22 [SCEA]
9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88
uid [ unknown] Docker Release (CE deb) <[email protected]>
sub rsa4096 2017-02-22 [S]

Add the Docker Repository

# add-apt-repository “deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable”

The following command will download Docker and install it:

# apt-get update -y

# apt-get install docker-ce -y

Start and enable Docker service

# systemctl start docker && systemctl enable docker

3. Create a container

We’ll show you two ways to deploy the container.

1. If you want to use domain name to access Portainer, use following command to deploy the container:

# docker run –restart always -d –name=portainer -v /var/run/docker.sock:/var/run/docker.sock -v /vol/portainer/data:/data -e VIRTUAL_HOST=port.example.com -e VIRTUAL_PORT=9000 portainer/portainer-ce -H unix:///var/run/docker.sock

  • -v /var/run/docker.sock:/var/run/docker.sock means mounting /var/run/docker.sock to the container so portainer can control the Docker.
  • -v /vol/portainer/data:/data means storing data of portainer on directory /vol/portainer/data.
  • port.example.com is your domain to access the portainer.

2. If you want to access Portainer using server IP, use following command to deploy the container:

# docker volume create portainer_data

# docker run -d -p 8000:8000 -p 9000:9000 –name=portainer –restart=always -v /var/run/docker.sock:/var/run/docker.sock -v portainer_data:/data portainer/portainer-ce

4. Configure Reverse Proxy for Portainer (Optional if you will use domain name)

Caddyfile is a reverse proxy server. It is necessary to secure the connection to prevent network hijacking. Caddyfile can obtains and automatically maintains SSL certificate.

Create a Caddyfile. Caddyfile is a document containing configs for your sites:

# mkdir -p /vol/caddy/configs
# vi /vol/caddy/configs/Caddyfile

Add following content:

port.example.com {
tls [email protected]
reverse_proxy portainer:8000
}

Replace: port.example.com with your domain name and [email protected] with your actual email id.

Save and exit.

Finally, create a Caddy container using following command:

# docker run –restart always -d -p 80:80 -p 443:443 -v “/vol/caddy/data:/data/caddy” -v “/vol/caddy/configs:/etc/caddy” –link portainer –name caddy caddy

  • -p 80:80 -p 443:443 means publish its 80 and 443 port to your host so you can access it with those ports.
  • -v “/vol/caddy/data:/data/caddy” means mount caddy working directory to your host to persist data such as certificates.
  • -v “/vol/caddy/configs:/etc/caddy” means mount caddy configuration directory to your host to persist configurations.
  • –link portainer means link container caddy with portainer so they can access with each other.

5. Access Portainer

Navigate to your browser and access the Portainer by using either your domain or server IP and set admin password and finish the installment.

How to Install Portainer on AlmaLinux 8 with Docker

That’s it. The installation has been completed successfully.

In this article, we’ve have seen how to install Portainer on Ubuntu 20.04 with Docker.

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