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homelab/active/container_langfuse/langfuse.md
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2026-09-07 11:37:56 -04:00

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Podman langfuse

Setup langfuse Project

  • Copy and rename this folder to active/container_langfuse
  • Find and replace langfuse with the name of the service.
  • Create the rootless user to run the podman containers
  • Write the compose.yaml spec for your service
  • Convert the compose.yaml spec to a quadlet
  • Install the quadlet on the podman server
  • Expose the quadlet service
  • Install a backup service and timer

Install langfuse

Create the langfuse user

# SSH into your podman server as root
useradd langfuse
loginctl enable-linger $(id -u langfuse)
systemctl --user --machine=langfuse@.host enable podman-restart
systemctl --user --machine=langfuse@.host enable --now podman.socket
mkdir -p /home/langfuse/.config/containers/systemd

Write the langfuse compose spec

Edit the compose.yaml at active/container_langfuse/compose/compose.yaml

A Note on Volumes

Named volumes are stored at /home/langfuse/.local/share/containers/storage/volumes/.

Convert langfuse compose spec to quadlets

Run the following to convert a compose.yaml into the various .container files for systemd:

# Generate the systemd service
podman run \
--security-opt label=disable \
--rm \
-v $(pwd)/active/container_langfuse/compose:/compose \
-v $(pwd)/active/container_langfuse/quadlets:/quadlets \
quay.io/k9withabone/podlet \
-f /quadlets \
-i \
--overwrite \
compose /compose/compose.yaml

# Copy the files to the server
export PODMAN_SERVER=
scp -r active/container_langfuse/quadlets/. $PODMAN_SERVER:/home/langfuse/.config/containers/systemd/
ssh $PODMAN_SERVER chown -R langfuse:langfuse /home/langfuse/.config/containers/systemd/

Create any container-mounted directories

SSH into your podman server as root:

machinectl shell langfuse@
podman unshare
mkdir some_volume
# Chown to the namespaced user with UID 1000
# This will be some really obscure UID outside the namespace
# This will also solve most permission denied errors
chown -R 1000:1000 some_volume

Start and enable your systemd quadlet

SSH into your podman server as root:

machinectl shell langfuse@
systemctl --user daemon-reload
systemctl --user restart langfuse
# Enable auto-update service which will pull new container images automatically every day
systemctl --user enable --now podman-auto-update.timer

Expose langfuse

  1. If you need a domain, follow the DDNS instructions
  2. For a web service, follow the Caddy instructions
  3. Finally, follow your OS's guide for opening ports via its firewall service.

firewalld

# command to get current active zone and default zone
firewall-cmd --get-active-zones
firewall-cmd --get-default-zone

# command to open 443 on tcp
firewall-cmd --permanent --zone=<zone> --add-port=443/tcp

# command to open 80 and 443 on tcp and udp
firewall-cmd --permanent --zone=<zone> --add-port={80,443}/{tcp,udp}

# command to list available services and then open http and https
firewall-cmd --get-services
firewall-cmd --permanent --zone=<zone> --add-service={http,https}

Backup langfuse

Follow the Borg Backup instructions

Upgrade langfuse

Upgrade Quadlets

Upgrades should be a repeat of writing the compose spec and installing the quadlets

export PODMAN_SERVER=
scp -r quadlets/. $PODMAN_SERVER$:/home/langfuse/.config/containers/systemd/
ssh langfuse systemctl --user daemon-reload
ssh langfuse systemctl --user restart langfuse

Uninstall

# Stop the user's services
systemctl --user disable podman-restart
podman container stop --all
systemctl --user disable --now podman.socket
systemctl --user disable --now podman-auto-update.timer

# Delete the user (this won't delete their home directory)
# userdel might spit out an error like:
# userdel: user langfuse is currently used by process 591255
# kill those processes and try again
userdel langfuse

Notes

SELinux

https://blog.christophersmart.com/2021/01/31/podman-volumes-and-selinux/

:z allows a container to share a mounted volume with all other containers.

:Z allows a container to reserve a mounted volume and prevents any other container from accessing.