Plex LXC from Ubuntu 22.04.5 to 24.04

[Riggspsk]

I noticed that Plex LXC script got bumped from Using Ubuntu 22.04 to 24.04. When I used the console to manually upgrade ubuntu to 24.04 it broke the "update" function. I removed the LXC and restored from a backup.

What is the proper way to upgrade without breaking anything?

[michelroegl-brunner]

What do you mean it broke the update, what error are you getting?

[Riggspsk]

Enter "update" into the console inside the lxc.
Screen comes up like normal, select Plex update.
Then on the next screen it just says something along the lines of Plex not found and stops without checking or doing any updates.

[mgrimace]

I'm certain this isn't the 'proper' way, but here's what I did to update from an old tteck script version of Plex (on 22.04) to 24.04. Everything works post-update including update function.

---

1. Backup Plex Configuration

Stop Plex and create a backup of your Plex settings

#Remove the tteck motd
echo "" > /etc/motd
#Stop and backup Plex
systemctl stop plexmediaserver.service
tar -czvf /root/plex_backup_$(date +%F).tar.gz /var/lib/plexmediaserver/

Optional: copy the backup someplace other than the LXC as well

---

2. Update and Clean Current System

sudo apt update
sudo apt upgrade -y
sudo apt dist-upgrade -y
sudo apt autoremove -y

---

3. Perform the Ubuntu Release Upgrade

sudo do-release-upgrade

If prompted:

• Continue with Y or ENTER
• Choose Y or I to install the package maintainer’s version for configs

After it's done, it should prompt a reboot, if not:

reboot

---

4. Reinstall Dependencies

After rebooting:

apt-get install -y \
  curl \
  wget \
  sudo \
  gnupg \
  ca-certificates \
  software-properties-common \
  ffmpeg \
  libssl-dev \
  libffi-dev \
  libexpat1 \
  libtiff6 \
  libopenjp2-7 \
  libturbojpeg0-dev \
  apt-transport-https

---

5. Restore Plex Repository

curl https://downloads.plex.tv/plex-keys/PlexSign.key | gpg --dearmor | tee /usr/share/keyrings/plex.gpg >/dev/null
echo "deb [signed-by=/usr/share/keyrings/plex.gpg] https://downloads.plex.tv/repo/deb public main" | tee /etc/apt/sources.list.d/plexmediaserver.list
apt update

---

6. Update/Reinstall Plex

apt -y upgrade plexmediaserver

7. Start Plex

systemctl daemon-reload
systemctl enable plexmediaserver
systemctl start plexmediaserver
systemctl status plexmediaserver

Note: Yes, I had to start it once before restoring the backup or else it wouldn't restore my libraries. You can open up Plex in the browser here and double check, if your libraries aren't there, then restore from backup. If they are you can skip the next step.

---

8. Restore Backup

Restore backed up Plex settings

# Extract backup
systemctl stop plexmediaserver
rm -rf /var/lib/plexmediaserver/Library
tar -xzf /root/plex_backup_YYYY-MM-DD.tar.gz -C /
#e.g., tar -xzf /root/plex_backup_2025-10-20.tar.gz -C /
# Fix ownership
chown -R plex:plex /var/lib/plexmediaserver
chmod -R 755 /var/lib/plexmediaserver

Replace YYYY-MM-DD with the date of your backup.

---

9. Start Plex, Again

systemctl daemon-reload
systemctl enable plexmediaserver
systemctl start plexmediaserver
systemctl status plexmediaserver

Note: Open Plex in a browser: http://<LXC_IP>:32400/web, make sure everything's there.

---

10. Clean Up

apt autoremove -y
apt autoclean

---

10. Update to the new MOTD

read -e -p "Enter APPLICATION name: " APPLICATION
source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/install.func)
motd_ssh

[Riggspsk]

Thank you! That worked perfectly.