In my last post, I discussed several Docker containers that I’m using for my home media streaming solution. Since then, Plex Media Server has updated to 0.9.11.4 for non-Plex Pass users, and there’s another update if you happen to pay for a subscription. As the Docker container I used (timhaak/plex) was version 0.9.11.1 at the time, I figured I’d take the opportunity to describe how to
- update Docker itself to the latest version
- run a shell inside the container as another process, to review configuration and run commands directly
- update Plex to the latest version, and describe how not to do this
- perform leet hax: commit the container to your local system, manually update the package, and re-commit and run Plex
Updating Docker
I alluded to the latest version of Docker having features that make it easier to troubleshoot inside containers. Switching to the latest version was pretty simple: following the instructions to add the Docker repository to my system, then running
upgraded Docker to version 1.3.1 without any trouble or need to manually uninstall the previous Ubuntu package.
Run a shell using docker exec
Let’s take a look inside the plex D2 form printable. container. Using the following command will start a bash process so that we can review the filesystem on the container:
- I've been running a Plex server for a few years via Unraid. While Plex has been serviceable for me during that time, I suffered all sorts of random performance issues where libraries were slow to load, recommended tabs would randomly time out or take 30-45 seconds to load, going into tv shows would take 5+ seconds or more to show episode thumbnails, movie collections would take forever to open.
- Update Plex to the latest version, and describe how not to do this. Perform leet hax: commit the container to your local system, manually update the.
Plus: 30 second skip, variable speed playback, rich discovery, and full Plex-style support for cross. (Plex Pass) Wirelessly sync videos to your.
docker exec -t -i plex /bin/bash
You will be dropped into a root prompt inside the plex container. Check out the filesystem: there will be a /config and a /data directory pointing to “real” filesystem locations. You can also use ps aux to review the running processes, or even netstat -anp to see active connections and their associated programs. To exit the shell, use Ctrl+C – but the container will still be running when you use docker ps -a from the host system.
Updating Plex in-place: My failed attempt
Different Docker containers will have different methods of performing software updates. In this case, looking at the Dockerfile for timhaak/plex, we see that a separate repository was added for the Plex package – so we should be able to confirm that the latest version is available. This also means that if you destroy your existing container, pull the latest image, then launch a new copy, the latest version of Plex will be installed (generally good practice.)
But wait – the upstream repository at http://shell.ninthgate.se/packages/debian/pool/main/p/plexmediaserver/ does contain the latest .deb packages for Plex, so can’t we just run an apt-get update && apt-get upgrade?
Well, not exactly. If you do this, the initial process used to run Plex Media Server inside the Docker container (start.sh) gets terminated, and Docker takes down the entire plex container when the initial process terminates. Worse, if you then decide to re-launch things with docker start plex, the new version is incompletely installed (dpkg partial configuration).
Computer pdf hardware and networking notes pdf in hindi language. So the moral of the story: if you’re trying this at home, the easiest way to upgrade is to recreate your Plex container with the following commands:
docker stop plex
docker rm plex
# The 'pull' process may take a while - it depends on the original repository and any dependencies in the Dockerfile. In this case it has to pull the new version of Plex.
docker pull timhaak/plex
# Customize this command with your config and data directories.
docker run -d -h plex --name='plex' -v /etc/docker/plex:/config -v /mnt/nas:/data -p 32400:32400 timhaak/plex
Once the container is up and running, access http://yourserver:32400/web/ to confirm that Plex Media Server is running. You can check the version number by clicking the gear icon next to your server in the left navigation panel, then selecting Settings.
Hacking the container: commit it and manually update Plex from upstream
If you’re more interested in hacking the current setup, there’s a way to commit your existing Plex image, manually perform the upgrade, and restart the container.
First, make sure the plex container is running (docker start plex) and then commit the container to your local filesystem (replacing username with your preferred username):
docker commit plex username/plex:latest
Then we can stop the container, and start a new instance where bash is the first process:
docker stop plex
docker rm plex
# Replace username with the username you selected above.
docker run -t -i --name='plex' -h plex username/plex:latest /bin/bash
Once inside the new plex container, let’s grab the latest Plex Media Server package and force installation:
curl -O https://downloads.plex.tv/plex-media-server/0.9.11.4.739-a4e710f/plexmediaserver_0.9.11.4.739-a4e710f_amd64.deb
dpkg -i plexmediaserver_0.9.11.4.739-a4e710f_amd64.deb
# When prompted, select Y to install the package maintainer's versions of files. In my instance, this updated the init script as well as the upstream repository.
Now, we can re-commit the image with the new Plex package. Hit Ctrl+D to exit the bash process, then run:
docker commit plex username/plex:latest
Plex Sync Waiting To Download
docker rm plex
Yeh rishta kya kehlata hai all songs list. # Customize this command with your config and data directories.
docker run -d -h plex --name='plex' -v /etc/docker/plex:/config -v /mnt/nas:/data -p 32400:32400 username/plex /start.sh
# Commit the image again so it will run start.sh if ever relaunched:
docker commit plex username/plex:latest
Plex Sync Waiting To Download
You’ll also need to adjust your /etc/init/plex.conf upstart script to point to username/plex.
Plex Sync Waiting To Convert
The downside of this method is now that you’ve forked the original Plex image locally and will have to do this again for updates. But hey, wasn’t playing around with Docker interesting?