DHCP Server - Expose dhcpd.lease file

FluffyMonster · April 29, 2024, 9:26pm

Currently to view the dhcpd.lease file requires logging into the container via the SSH terminal and using docker.

Could that file location be changed to one of the shared locations i.e. /config or /share

home-assistant/addons/blob/a99b51971079c6719ba038c815fcec2d6e444360/dhcp_server/data/run.sh

#!/usr/bin/with-contenv bashio
set -e

CONFIG="/etc/dhcpd.conf"
LEASES="/data/dhcpd.lease"

bashio::log.info "Creating DHCP configuration..."

# Create main config
DEFAULT_LEASE=$(bashio::config 'default_lease')
DOMAIN=$(bashio::config 'domain')
MAX_LEASE=$(bashio::config 'max_lease')

{
    echo "option domain-name \"${DOMAIN}\";"
    echo "default-lease-time ${DEFAULT_LEASE};"
    echo "max-lease-time ${MAX_LEASE};"
    echo "authoritative;"
} > "${CONFIG}"

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Sir_Goodenough · April 29, 2024, 11:05pm

Did you try to add a symlink?

FluffyMonster · April 30, 2024, 5:32am

I would prefer that this feature is native to the Add On.

Sir_Goodenough · April 30, 2024, 6:27am

That’s a file in the main HAOS.
Add-ons run in a docker.
What addon are you talking about?

parautenbach · April 30, 2024, 6:41am

Why would users need to see this? Just to see when the lease will expire? And why is that important? I think the FR needs a justification.

nickrout · April 30, 2024, 9:30am

The DHCP addon.

To the OP, you can do it if you want. Not sure why you would want to.

FluffyMonster · May 2, 2024, 5:04am

I use it to get IP from MAC address. Handy when I just want to see what IP a device has on the network.

When I was running DHCP on another server, I would pull that information into a device database for other uses.

TBH, I thought the discussion would be about why you would not place this information on a shared folder rather than why I would want to do it.

stevemann · May 2, 2024, 5:11am

I was wondering the same.

stevemann · May 2, 2024, 5:15am

Advanced IP Scanner will do this, as well as my router.

FluffyMonster · May 2, 2024, 5:38am

I did not ask for other tools, hacks or how to’s, I just put in a Feature request for a standard AddOn to change where it stored its file.

If the owners of the Add On don’t wish to do it, that is fine.

If I find a place to delete the post / close the thread I will.

parautenbach · May 2, 2024, 5:44am

You can typically run an arp command anywhere on your network. If you know the MAC it’s easy to look up the IP.

Asking for justification isn’t unreasonable, as proven by several other responses. The burden is on you to motivate for a request. This is an extremely large project with limited time and resources.

Alternatives are useful until such time a feature is implemented, if ever.

renedepe · July 22, 2024, 8:58pm

I like to up vote this request. I have some leases that does not seems to get cleared from the leases file. Because of this, the logging keeps complaining about duplicate addresses for my dhcp reservations op devices. I am not good with ssh, so access to the file directly will be much easier for me :-).

f18m · September 26, 2024, 9:07pm

Hey,
you might want to checkout an addon I created exactly to be able to visualize, sort & filter all DHCP clients in my network: DHCP server addon with Web UI