Differences

This shows you the differences between two versions of the page.

--- docker_installation_on_fedora [2019/01/24 10:05] – [Registering the Docker repository] rpjday
+++ docker_installation_on_fedora [2019/01/24 14:01] (current) – [Installing Docker and Docker Compose] rpjday
@@ Line 2: / Line 2: @@
 How to install and test Docker and friends on current Fedora 29.
+Extra:
+  * ''curl -fsSL get.docker.com -o get-docker.sh''
 ===== Links =====
@@ Line 9: / Line 14: @@
       * [[https://docs.docker.com/install/linux/linux-postinstall/|Post-installation steps for Linux]]
-===== Get rid of any earlier Docker packages =====
+===== Get rid of earlier Docker/container content =====
 Fedora's Docker packaging has undergone some reorganization, so you first need to get rid of all earlier Docker-related packages. First, take a quick look at what Docker-related packages are already installed:
@@ Line 38: / Line 43: @@
     docker-engine
 $
+</code>
+or possibly just:
+<code>
+$ sudo dnf remove "*docker*"
 </code>
@@ Line 60: / Line 71: @@
 <code>
 $ dnf repoquery --repo=docker-ce-stable
-Docker CE Stable - x86_64                                      1.6 kB/s | 3.6 kB     00:02
 containerd.io-0:1.2.2-3.fc29.x86_64
 docker-ce-3:18.09.1-3.fc29.x86_64
@@ Line 72: / Line 82: @@
 <code>
-$ sudo dnf install docker-ce docker-compose
+$ sudo dnf install docker-ce [docker-compose]
 </code>
-You should then start and enable the Docker daemon (if it isn't already):
+resulting in:
+<code>
+Installing:
+ containerd.io         x86_64         1.2.2-3.fc29              docker-ce-stable
+     replacing  runc.x86_64 2:1.0.0-66.dev.gitbbb17ef.fc29
+ docker-ce             x86_64         3:18.09.1-3.fc29          docker-ce-stable
+Installing dependencies:
+ docker-ce-cli         x86_64         1:18.09.1-3.fc29          docker-ce-stable
+ libcgroup             x86_64         0.41-20.fc29              fedora
+</code>
+Should create group ''docker''.
+===== Docker RPM scripts =====
+==== preinstall ====
+<code>
+if [ $1 -gt 0 ] ; then
+    # package upgrade scenario, before new files are installed
+    # clear any old state
+    rm -f /var/lib/rpm-state/docker-is-active > /dev/null 2>&1 || :
+    # check if docker service is running
+    if systemctl is-active docker > /dev/null 2>&1; then
+        systemctl stop docker > /dev/null 2>&1 || :
+        touch /var/lib/rpm-state/docker-is-active > /dev/null 2>&1 || :
+    fi
+fi
+</code>
+==== postinstall ====
+<code>
+if [ $1 -eq 1 ] ; then
+        # Initial installation
+        systemctl --no-reload preset docker &>/dev/null || :
+fi
+if ! getent group docker > /dev/null; then
+    groupadd --system docker
+fi
+... EE stuff snipped ...
+</code>
+==== preuninstall ====
+<code>
+if [ $1 -eq 0 ] ; then
+        # Package removal, not upgrade
+        systemctl --no-reload disable --now docker &>/dev/null || :
+fi
+update-alternatives --remove dockerd /usr/bin/dockerd || true
+</code>
+==== postuninstall ====
+<code>
+if [ $1 -ge 1 ] ; then
+        # Package upgrade, not uninstall
+        systemctl try-restart docker &>/dev/null || :
+fi
+</code>
+===== Starting Docker =====
+<code>
+$ systemctl status docker.service
+● docker.service - Docker Application Container Engine
+   Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
+   Active: inactive (dead)
+     Docs: https://docs.docker.com
+$
+</code>
 <code>
@@ Line 86: / Line 169: @@
 <code>
 $ systemctl status docker
+● docker.service - Docker Application Container Engine
+   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
+   Active: active (running) since Thu 2019-01-24 05:45:18 EST; 6s ago
+     Docs: https://docs.docker.com
+ Main PID: 16470 (dockerd)
+    Tasks: 46
+   Memory: 58.3M
+   CGroup: /system.slice/docker.service
+           ├─16470 /usr/bin/dockerd -H fd://
+           └─16496 containerd --config /var/run/docker/containerd/containerd.toml --log-level info
+$
 </code>
-Finally, you can test your installation with:
+===== Testing installation =====
 <code>
 $ sudo docker run hello-world
+Unable to find image 'hello-world:latest' locally
+latest: Pulling from library/hello-world
+b930d010525: Pull complete
+Digest: sha256:2557e3c07ed1e38f26e389462d03ed943586f744621577a99efb77324b0fe535
+Status: Downloaded newer image for hello-world:latest
 Hello from Docker!
@@ Line 109: / Line 208: @@
 Share images, automate workflows, and more with a free Docker ID:
- https://cloud.docker.com/
+ https://hub.docker.com/
 For more examples and ideas, visit:
- https://docs.docker.com/engine/userguide/
+ https://docs.docker.com/get-started/
 $
 </code>
@@ Line 138: / Line 237: @@
 $ docker run hello-world
 ... etc etc ...
+</code>
+===== Running Ubuntu bash =====
+<code>
+$ docker run -it ubuntu bash
+Unable to find image 'ubuntu:latest' locally
+latest: Pulling from library/ubuntu
+e2e6cd5626: Pull complete
+bc3f5b: Pull complete
+c7051e069564: Pull complete
+e914506c: Pull complete
+Digest: sha256:945039273a7b927869a07b375dc3148de16865de44dec8398672977e050a072e
+Status: Downloaded newer image for ubuntu:latest
+root@f7c76c6f0ee4:/# id
+uid=0(root) gid=0(root) groups=0(root)
+root@f7c76c6f0ee4:/#
+</code>
+From another session:
+<code>
+# docker ps
+CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
+f7c76c6f0ee4        ubuntu              "bash"              25 seconds ago      Up 22 seconds                           nifty_spence
 </code>