Docker Installation

Pakete

Debian (ab 12)

Docker Repository hinzufügen:

apt install -y extrepo
extrepo search docker

→ Found docker-ce:

extrepo enable docker-ce

→ legt an: /etc/apt/sources.list.d/extrepo_docker-ce.sources

apt update

Pakete installieren:

apt install docker-ce docker-ce-cli docker-compose-plugin

++++ Alternativ: Docker Packet von Debian |

apt install docker.io docker-cli docker-compose

++++

Rocky Linux (9)

Docker Repository hinzufügen:

dnf config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

Pakete installieren:

dnf -y install docker-ce docker-ce-cli containerd.io docker-compose-plugin

Docker Service aktivieren

systemctl --now enable docker

Docker Installation testen:

docker version
docker system info

läuft der Docker Service?

systemctl status docker.service
docker ps

→ CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

Nutzer zur Gruppe docker hinzufügen

Erspart das sudo vor jedem docker. Gibt dem Benutzer auf indirekt root-Rechte.

gpasswd -a nutzer43 docker

lokalen Proxy / Cache verwenden

/etc/docker/daemon.json

{
   "registry-mirrors": ["http://docker-registry.guest.linuxhotel.de"],
   "insecure-registries": ["docker-registry.guest.linuxhotel.de"]
}

Logs zu Systemd-Journald umleiten

docker info --format '{{.LoggingDriver}}'

→ json-file ¹⁾

¹⁾

https://docs.docker.com/engine/logging/drivers/json-file/ „By default, no log-rotation is performed. As a result, log-files stored by the default json-file logging driver can cause a significant amount of disk space to be used for containers that generate much output, which can lead to disk space exhaustion. Docker keeps the json-file logging driver (without log-rotation) as a default to remain backwards compatible with older versions of Docker, and for situations where Docker is used as runtime for Kubernetes.“